CN105634142B - Energy internet system construction method and equipment based on cloud energy storage terminal - Google Patents

Abstract

A method and device for constructing an energy internet system based on a cloud energy storage terminal. Based on the cloud energy storage terminal, an energy Internet system composed of a control center and several cloud energy storage terminals is constructed. The control center communicates with the cloud energy storage terminal one-to-one, analyzes the load of the power grid, and controls the charging control system in the cloud energy storage terminal. And its adjustable input reactance and the inverter system and its output reactance adjustable circuit are regulated, and then the power supply and load of the power grid are regulated. The control center includes an industrial control computer, the electrical parameter acquisition module of the control center, and the power line carrier communication module of the control center are respectively connected to the three-phase power line, and several cloud energy storage terminals are respectively connected to the A phase, B phase and C phase of the three-phase power line, forming a system based on Energy interconnection network of cloud energy storage terminals. The invention solves the current situation of uncontrollable energy supply in the existing new energy technology, eliminates transmission loss, reduces energy loss and grid backup power scale, and has broad application prospects.

Description

Energy internet system construction method and equipment based on cloud energy storage terminal

1. Technical field

The invention belongs to the field of electric power and relates to energy storage, in particular to the construction and equipment of an energy Internet system of a cloud energy storage terminal.

2. Background technology

Today, the global climate problem threatens the human living environment. Modern lifestyles and production methods must rely on energy, and the use or production of energy must emit carbon dioxide. The greenhouse effect caused by carbon dioxide is an important reason for the rise in global temperature. The supply of global energy mainly depends on electric energy, and the production of electric energy mostly relies on the combustion of coal or oil, and the combustion process will produce a large amount of carbon dioxide. In order to reduce the carbon dioxide produced in the process of electric energy production, the world vigorously promotes clean energy production methods. At present, the main clean energy production methods include wind power, photovoltaic power generation, and hydropower. The power generation of these three forms of power generation is related to the climate, and wind power and photovoltaic power generation have strong intermittency. The generated electric energy must be consumed or stored. The climate-related clean energy has great fluctuations in energy output, either with excess capacity that cannot be absorbed, or insufficient capacity to meet electricity demand. To overcome this state, energy storage systems are required. However, large-scale installation of energy storage systems in power plants has problems such as high cost, large floor space, and low energy utilization efficiency. Solving the storage problem of electric energy can improve the efficiency of electric power usage and reduce environmental pollution.

Chinese patent (publication number: CN105048486A) "A Parallel Grid-Connected Battery Energy Storage System Controller and Its Control Method" discloses a parallel grid-connected battery energy storage system controller and its control method. Under normal circumstances, the energy interaction with the energy storage system is realized, and the inverter output is realized under abnormal conditions of the power grid. Chinese patent (publication number: CN201510567724) "Battery health state optimization control method for modular multi-level battery energy storage system", this method can reduce its discharge rate and discharge depth by controlling the corresponding module of MMC when the performance of individual battery packs declines protection; and reduces thermal management requirements for modular multilevel battery energy storage systems. The above-mentioned patent discloses some energy storage control methods, but does not construct a large distributed system for energy storage to participate in the control and regulation of the power grid, which cannot meet the needs of today's energy development. (compressed length)

3. Contents of the invention

The purpose of the present invention is to address the lack of energy storage systems in the prior art, and use cloud energy storage terminals as user terminals to construct an energy interconnection system and equipment in a distributed energy storage manner. The invention can freely connect to the power grid at the user end, and under the control of the control center, adjust the power balance and three-phase balance of the power grid by controlling the power consumption mode of the user end, so that the electric energy with unbalanced production capacity can be consumed when the power generation is sufficient. When the power generation is insufficient, the power can be supplemented by the user end, so that the power grid has a better ability to accept green energy, and at the same time makes the power grid more stable.

The purpose of the present invention is achieved in this way: the system is based on several cloud energy storage terminals, and an energy Internet system consisting of a control center and several cloud energy storage terminals is constructed. The control center includes an industrial control computer, an electrical parameter acquisition module of the control center, The power line carrier communication module of the control center, the electrical parameter acquisition module of the control center, and the power line carrier communication module of the control center are respectively connected to the three-phase power line A phase, B phase and C phase through the connection line of the power line, and the three-phase power line A phase, B phase and C phase A number of cloud energy storage terminals are respectively connected to phase C, and the cloud energy storage terminals form a two-way communication system with the control center separately through power line carrier communication.

The cloud energy storage terminal is composed of a terminal power line carrier communication module, a terminal electrical parameter acquisition module, a charging control system, a storage battery, an inverter system, a local AC power controller and a microprocessor. When the charging control system works, it adds load to the grid. Adding power to the grid when the inverter system is active.

Under the control of the power line carrier communication module of the control center and the power line carrier communication module of the cloud energy storage terminal, the control center performs one-to-one communication with a single cloud energy storage terminal, and through the one-to-one communication between the control center and the cloud energy storage terminal, Analyze the load size of the power grid, adjust the adjustable input reactance circuit of the charging control system in the cloud energy storage terminal and the adjustable output reactance circuit of the inverter system, so that the cloud energy storage terminal can be used as a power source or as a Load, when the cloud energy storage terminal is used as a power source, the output reactance can be adjusted arbitrarily as a capacitive, inductive or purely resistive output. When used as a load, it can be arbitrarily adjusted to be a capacitive load, an inductive load or a purely resistive load, and then adjust the grid. Supply and demand balance.

The specific method of regulating the output reactance adjustable circuit of the inverter system of the charging control system in the cloud energy storage terminal is;

The relay C connected in series with double capacitance is called relay CR1, the relay C connected in series with double capacitance is called relay CR2, and the relay C connected in series with quadruple capacitance is called relay CR4;

Let the capacitance value of a double capacitor be X, the capacitance value of a double capacitor is twice that of a double capacitor, which is 2X; the capacitance value of a quadruple capacitor is four times that of a double capacitor, which is 4X, and the capacitors connected in series Relay C is used to choose whether to connect the capacitor to the two inductors. Through the control of the relay by the microprocessor, select whether to connect the double capacitance, double capacitance, or quadruple capacitance. The connection method and the connection capacitance are calculated as follows :

Access to double capacitor: 1X, access to double capacitor: 2X,

Simultaneous access to double capacitors and double capacitors: 3X, access to quadruple capacitors: 4X,

Simultaneous access to double capacitors and quadruple capacitors: 5X, simultaneous access to double capacitors and quadruple capacitors: 6X,

Simultaneous access to double capacitors, double capacitors and quadruple capacitors: 7X,

When a 4X capacitor is connected, the output reactance composed of the capacitor and the inductance is 0 at the grid power frequency, then when the connected capacitor is less than 4X, the input reactance is inductive, and the smaller the connected capacitor, the larger the output inductive reactance; When the input capacitance is greater than 4X, the input reactance is capacitive, and the larger the input capacitance, the greater the output capacitive reactance.

Control Center software process:

Start, the first step is to receive all cloud energy storage terminal data, the second step is to find unregistered cloud energy storage terminals, the third step is to judge whether there are unregistered cloud energy storage terminals, if yes, enter the registration subroutine, execute After registering the subroutine, go to the fourth step. If there is none, the fourth step is to read the data of the electrical parameter acquisition module in the control center. The fifth step is to analyze the grid data. The sixth step is to judge whether the grid load is too large. If not, go to the eighth step , yes, judge whether the power grid needs capacitive power supply, yes, enter the capacitive power supply subroutine, and return to the first step, no, judge whether the power grid needs inductive power supply, yes, enter the inductive power supply subroutine, and return to the first step, no , enter the subroutine of pure resistance power supply, and return to the first step, the eighth step, judge whether the grid load is too small, no, return to the first step, yes, enter the ninth step, determine whether the grid needs a capacitive load, yes, enter Capacitive load subroutine, and return to the first step, no, enter the tenth step, judge whether the grid needs inductive load, yes, enter the inductive load subroutine, and return to the first step, no, enter the pure resistance load subroutine, return first step.

The inverter system of the cloud energy storage terminal is composed of three circuit modules: an inverter power supply, a synchronous circuit, and an adjustable output reactance circuit. The output of the inverter power supply is connected to the adjustable output reactance circuit, and the output of the adjustable output reactance circuit is connected to the input Household power line, the inverter power supply is used to convert the battery power supply to the grid-powered AC power supply, the synchronization circuit extracts the grid power supply synchronization signal, and the output reactance adjustable circuit is used to adjust the output reactance.

The synchronization circuit takes out the synchronization signal of the household power line from the household power line, and sends the synchronization signal to the microprocessor. The microprocessor also controls whether the output reactance adjustable circuit outputs power, and controls the output reactance value of the reactance adjustable circuit; the inverter power supply converts the direct current of the battery into an alternating current with the same frequency and the same voltage as the household power line, and converts the alternating current It is sent to the adjustable output reactance circuit; under the control of the microprocessor, the adjustable output reactance circuit selects whether to output power and what kind of reactance to output.

Under the control of the power line carrier communication module of the control center and the terminal power line carrier communication module of the cloud energy storage terminal, the control center performs one-to-one communication with a single cloud energy storage terminal, and the program flow includes the control center software process and the cloud energy storage terminal. The software flow includes registration subroutine, capacitive power supply subroutine, inductive power supply subroutine, pure resistance power supply subroutine, capacitive load subroutine, inductive load subroutine and pure resistance load subroutine in the control center software flow.

The energy interconnection system equipment based on cloud energy storage terminal is composed of a control center and several cloud energy storage terminals. The control center includes an industrial control computer, an electrical parameter acquisition module of the control center, a power line carrier communication module of the control center, and an electrical parameter acquisition module of the control center. , The power line carrier communication module of the control center is connected to the three-phase power line respectively through the connection line of the power line, and several cloud energy storage terminals are respectively connected to the A phase, B phase and C phase of the three-phase power line, and the cloud energy storage terminals are respectively connected through the power line carrier communication method. Alone with the control center to form a two-way communication system.

There are a total of cloud energy storage terminals connected to the A-phase line, a total of b-a cloud energy storage terminals connected to the B-phase line, and a total of c-b cloud energy storage terminals connected to the C-phase line, of which , c is greater than b, and b is greater than a.

The cloud energy storage terminal is composed of a terminal power line carrier communication module, a terminal electrical parameter acquisition module, a charging control system, a storage battery, an inverter system, a local AC power controller and a microprocessor. When the charging control system works, it adds load to the grid. Adding power to the grid when the inverter system is active.

The charging control system includes an adjustable input reactance circuit, a charging control module, and charging status monitoring. The adjustable input reactance is a combination of two groups of relays and inductors connected in series on the connection terminals AVINA and AVINB of the power line into the home, respectively. LA, LB, the LA , the inductance values in LB are equal, the other ends of LA and LB are connected to terminal LOP and terminal LOL respectively, a relay and capacitor series combination LC is set between terminals LOP and LOL, one end of LC is connected to terminal LOP, and the other end is connected to The respective capacitor values in the connection terminals LOL and LC are equal.

The inverter system is composed of three circuit modules: an inverter power supply, a synchronous circuit, and an adjustable output reactance circuit. The adjustable output reactance circuit is: connect an inductor, double capacitor, and double capacitor to the output terminals AVV and AVU of the inverter power supply, respectively. , quadruple capacitors are respectively connected in series with a relay C to form 3 series circuits, and the three series circuits are connected in parallel and are respectively connected to the other end of the inductance. Relay and filter coil, the filter coil is connected to the household power line.

The communication interface connection line of the electrical parameter acquisition module of the control center is connected with the electrical parameter acquisition module of the control center and the industrial control computer to provide a communication connection between the two, and the communication interface is RS232.

The power line carrier communication communication interface connection line of the control center is connected to the power line carrier communication module of the control center to provide a communication connection between the two, and the communication interface is RS232.

For the cloud energy storage terminal, the terminal power line carrier communication module is connected to the microprocessor through the communication interface connection line, and the communication interface is RS232.

The input terminals of the terminal electrical parameter acquisition module are respectively connected to the incoming power line, the charging control system power input line, and the inverter system power output line, and respectively measure the electrical parameters of the home power line, the charging control system power input line, and the inverter system output power line, And connect to the microprocessor through the communication interface connection line of the terminal electrical parameter acquisition module, and the communication interface is RS232;

The input of the charging control system is connected to the household power line through the power input line of the charging control system, and the output is connected to the battery, which is connected to the microprocessor through the control line of the charging control system. The charging state monitoring is used to monitor the charging voltage and charging current during the charging process. And according to the charging voltage and charging current to calculate the state of charge of the battery.

The battery is connected to the charging control system, inverter system, and local DC output. The battery is charged through the charging control system. The battery provides power for the grid through the inverter system. The battery provides DC power for the local area through the local DC output connection.

The input of the inverter system is connected to the battery, the output is connected to the household power line through the power output line of the inverter system, and connected to the microprocessor through the control line of the inverter system;

The two input terminals of the local AC power controller are respectively connected to the power input line of the charging control system and the power output line of the inverter system, and are connected to the microprocessor through the control line of the local AC power controller.

In the adjustable input reactance circuit, in the combination LA of the relay and the inductor connected in series, one end of the relay LA1, the relay LA2, and the relay LA3 are connected to the AVINA terminal, and the other end is connected in series with the inductor LA1, the inductor LA2, and the inductor LA3 respectively, and the inductors LA1, The other ends of the inductor LA2 and the inductor LA3 are connected to the connection terminal LOP, and the terminal LOP is connected to the same-named terminal of the charging control module.

In the combination LB of relay and inductor in series, one end of relay LB1, relay LB2, and relay LB3 is connected to AVINB terminal, and the other end is connected in series with inductor LB1, inductor LB2, and inductor LB3 respectively, and the other end of inductor LB1, inductor LB2, and inductor LB3 is connected to connection terminal LOL.

In the series combination of relay and capacitor LC, relay LC1, relay LC2, and relay LC3 are respectively connected in series with capacitor LC1, capacitor LC2, and capacitor LC3. One end of relay LC1, relay LC2, and relay LC3 is connected to the LOL terminal, and the other end is respectively connected to capacitor LC1, Capacitor LC2 and capacitor LC3 are connected in series, and the other ends of capacitor LC1 , capacitor LC2 and capacitor LC3 are connected to connection terminal LOP.

The inductance values of inductor LA1, inductor LA2, inductor LA3, inductor LB1, inductor LB2, and inductor LB3 are equal, and the inductance value is LLA, and the unit is Henry; the capacitance values of capacitor LC1, capacitor LC2, and capacitor LC3 are equal, and the capacitance value is CLA , the unit is farad;

The inductance value LLA is determined by the calculation and experiment of the specific circuit according to the needs of the peripheral circuit, and it is guaranteed that the input reactance is pure resistance at the power grid frequency when the inductance LA1, inductance LA2, inductance LB1, inductance LB2, capacitor LC1, and capacitor LC2 are connected.

The relay C connected in series with double capacitance is called relay CR1, the relay C connected in series with double capacitance is called relay CR2, and the relay C connected in series with quadruple capacitance is called relay CR4;

The capacitance value of a double capacitor is X, the capacitance value of a double capacitor is twice that of a double capacitor, which is 2X; the capacitance value of a quadruple capacitor is four times that of a double capacitor, which is 4X, and the relay connected in series with each capacitor C is used to choose whether to connect the capacitor to the two inductors. Through the control of the microprocessor to the relay, choose whether to connect the double capacitance, double capacitance, or quadruple capacitance. The connection method and the connection capacitance are calculated as follows:

Access to double capacitor: 1X, access to double capacitor: 2X,

Simultaneous access to double capacitance and double capacitance: 3X, access to quadruple capacitance: 4X,

Simultaneous access to double capacitors and quadruple capacitors: 5X, simultaneous access to double capacitors and quadruple capacitors: 6X,

Simultaneous access to double capacitors, double capacitors and quadruple capacitors: 7X,

When the 4X capacitor is selected, the output reactance composed of the capacitor and the inductance is 0 at the grid power frequency, and the inverter outputs pure resistance.

The positive effect of the present invention is:

1. The present invention uses energy interconnection technology to enable cloud energy storage terminals to freely connect to the power grid, thereby forming an energy Internet. Under the control of the control center, the cloud energy storage terminal can be arbitrarily used as a power supply terminal or a load terminal. When the cloud energy storage terminal is used as a power source, the output reactance can be adjusted arbitrarily as a capacitive, inductive or purely resistive output. When used as a load, it can be arbitrarily adjusted to be a capacitive load, an inductive load or a purely resistive load.

2. Cloud energy storage technology puts energy storage at the user end, which eliminates transmission loss, reduces energy loss, disperses the investment and floor space of energy storage facilities, and reduces the related investment of power companies.

3. The present invention increases the scale of clean energy in the power grid and ensures that the electric energy of clean energy is absorbed.

4. The present invention reduces the backup power scale of the power grid, and contributes to the power balance and three-phase balance of the power grid.

5. The present invention can separately adjust the output reactance properties of the energy output end and the reactance properties of the load end, which is beneficial to the stable operation of the power grid.

4. Description of drawings

Fig. 1 is the general structural diagram of the present invention.

Figure 2 is a structural diagram of the control center.

Figure 3 is a structural diagram of a cloud energy storage terminal.

Fig. 4 is a circuit diagram of the microprocessor of the cloud energy storage terminal.

Figure 5 is a schematic diagram of the microprocessor RS232 interface.

Figure 6 is a five-volt to three-volt power conversion circuit.

Figure 7 is a three-volt to two-volt power conversion circuit.

Figure 8 is the JTAG circuit of the microcontroller download and debug interface.

Fig. 9 is a structural diagram of the charging control system.

Figure 10 is a structural diagram of adjustable input reactance.

Figure 11 is a schematic diagram of adjustable input reactance.

Figure 12 is a schematic diagram of the charging control module.

Fig. 13 is a schematic diagram of charging state monitoring.

Fig. 14 is a structural diagram of the inverter system.

Figure 15 is a schematic diagram of the inverter power supply.

Figure 16 is a schematic diagram of the synchronous circuit.

Fig. 17 is a structural diagram of an output reactance adjustable circuit.

Fig. 18 is a schematic diagram of an output reactance adjustable circuit.

Fig. 19 is a schematic diagram of the local AC power selection system.

Fig. 20 is a flow chart of the control center software.

Fig. 21 is a flow chart of the registration subroutine.

Figure 22 is a flow chart of the capacitive power supply subroutine.

Figure 23 is a flow chart of the inductive power subroutine.

Fig. 24 is a flow chart of a subroutine for a pure resistance power supply.

Figure 25 is a flow chart of the capacitive load subroutine.

Figure 26 is a flow chart of the inductive load subroutine.

Figure 27 is a flow chart of the pure resistance load subroutine.

Fig. 28 is a flowchart of cloud energy storage terminal software.

In the figure, 1 control center, 2-1~2-3 three-phase power lines, 3-a+1, 3-a+2, 3-a+3, 3-b+1, 3-b+2, 3- b+3, 3-c, 3-c-1 cloud energy storage terminal, 4-1~4-3 connection line between control center and power line, 5-a+1, 5-a+2, 5-a+3 , 5-b+1, 5-b+2, 5-b+3, 5-c, 5-c-1 the connection line between the cloud energy storage terminal and the power line, 6 the electrical parameter acquisition module of the control center, 7 the power line of the control center Carrier communication module, 8 industrial control computer, 9 control center electrical parameter acquisition module communication interface connection line, 10 control center power line carrier communication interface connection line, 11 microprocessor, 12 terminal power line carrier communication module, 13 terminal power line carrier communication module communication Interface connection line, 14 terminal electrical parameter acquisition module, 15 terminal electrical parameter acquisition module communication interface connection line, 16 charging control system, 17 charging control system control line, 18 storage battery, 19 inverter system, 20 inverter system control line, 21 Local DC output, 22 Local AC output, 23 Local AC power controller, 24 Local AC power controller control line, 25 Household power line, 26 Charging control system power input line, 27 Inverter system power output line, 28 Inverter Variable power supply, 29 output reactance adjustable circuit, 30 synchronous circuit, 31-1, 31-2 inductance, 33 double capacitance, 34 double capacitance, 35 quadruple capacitance, 36-1～36-3 relay C, 37- 1. 37-2 relay O, 38-1, 38-2 filter coil, 40 adjustable input reactance circuit, 41 charging control module, 50 charging state monitoring 42-1~42-3 relay LA, 43-1~43- 3 relays LB, 44-1~44-3 relays LC, 45-1~45-3 inductors LA, 46-1~46-3 inductors LB, 47-1~47-3 capacitors LC.

5. Specific implementation

The basic idea of the present invention is to connect several cloud energy storage terminals with the control center to build an energy Internet system composed of the control center and several cloud energy storage terminals, and through the one-to-one communication between the control center and the cloud energy storage terminal, Analyze the load size of the power grid, adjust the adjustable input reactance of the charging control system in the cloud energy storage terminal and the adjustable output reactance circuit of the inverter system, so that the cloud energy storage terminal can be used as a power source or as a load , when the cloud energy storage terminal is used as a power source, the output reactance can be adjusted arbitrarily as a capacitive, inductive or purely resistive output, and when used as a load, it can be arbitrarily adjusted to be a capacitive load, an inductive load or a purely resistive load, so as to achieve the protection of the power grid Two-way regulation and balance of power supply and load.

Under the action of the power line carrier communication module of the control center and the power line carrier communication module of the cloud energy storage terminal, the control center performs one-to-one communication with a single cloud energy storage terminal, and through the one-to-one communication between the control center and the cloud energy storage terminal, Analyze the load of the power grid, adjust the adjustable input reactance circuit 40 of the charging control system 16 in the cloud energy storage terminal or the adjustable output reactance circuit 29 of the inverter system 19, so that the cloud energy storage terminal can be used as a power source , can also be used as a load. When the cloud energy storage terminal is used as a power supply, the output reactance can be adjusted arbitrarily as a capacitive, inductive or pure resistance output. When used as a load, it can be adjusted as a capacitive load, an inductive load or a pure resistance. load, so as to achieve a two-way regulation and balance of the power supply and load of the power grid.

See attached drawings 1-3.

The control center 1 is composed of an industrial control computer 8 , an electrical parameter acquisition module 6 of the control center, and a power line carrier communication module 7 of the control center. The power line carrier communication module of the control center is respectively connected to phase A, phase B and phase C of the three-phase power lines through connecting lines 4-1 to 4-3 of the power lines. A number of cloud energy storage terminals are respectively connected to phase A, phase B and phase C of the three-phase power line, and the cloud energy storage terminals form a two-way communication system with the control center separately through power line carrier communication.

There are a total of cloud energy storage terminals connected to the A-phase line, a total of b-a cloud energy storage terminals connected to the B-phase line, and a total of c-b cloud energy storage terminals connected to the C-phase line, among which, c is greater than b, and b is greater than a.

The power lines in Fig. 1 are the power lines of the public power grid. The connection lines between the control center and the power line, and the connection lines between the cloud energy storage terminal and the power line are all metal wires.

Control center: the three control center and power line connecting lines 4-1 to 4-3 connecting the three-phase power lines 2-1 to 2-3 are respectively connected to the electrical parameter acquisition module 6 of the control center and the power line carrier communication module 7 of the control center. The communication interface connection line 9 of the electrical parameter acquisition module of the control center is connected to the electrical parameter acquisition module of the control center and the industrial control computer to provide a communication connection between the two, and the communication interface is RS232. The power line carrier communication interface connection line 10 of the control center is connected to the power line carrier communication module 7 of the control center to provide a communication connection between the two, and the communication interface is RS232.

The electrical parameter acquisition module of the control center adopts Shandong Lichuang Technology Co., Ltd.: EDA9033E.

The power line carrier communication module of the control center adopts Guangzhou Zhiyuan Electronics Co., Ltd.: ZPLC-10EVB.

Industrial control computer: EVOC Intelligent Technology Co., Ltd.: MEC-4032.

The cloud energy storage terminal is composed of a terminal power line carrier communication module 12, a terminal electrical parameter acquisition module 14, a charging control system 16, a storage battery 18, an inverter system 19, a local AC power controller 23 and a microprocessor 11. The charging control system starts from When it works, it adds load to the grid, and when the inverter system works, it adds power to the grid.

The incoming power line 25 is respectively connected to the terminal power line carrier communication module 12 , the terminal electrical parameter collection module 14 , the charging control system 16 , and the inverter system 19 .

The terminal power line carrier communication module communication interface connection line 13 of the terminal power line carrier communication module 12 is connected to the microprocessor 11, and the communication interface is RS232.

The input terminals of the terminal electrical parameter acquisition module 14 are respectively connected to the incoming power line 25, the charging control system power input line 26, and the inverter system power output line 27, and respectively measure the incoming power line, the charging control system power input line, and the inverter system output power line The electrical parameters are connected to the microprocessor through the communication interface connection line of the terminal electrical parameter acquisition module, and the communication interface is RS232.

The input of the charging control system is connected to the household power line through the charging control system power supply input line 26, the output is connected to the storage battery 18, and is connected to the microprocessor through the charging control system control line 17. When the charge control system is active, it adds load to the grid.

The battery 18 is connected to the charging control system 16, the inverter system 19, and the local DC output 21, and the battery is charged through the charging control system. The battery provides power for the grid through the inverter system, and the battery provides DC power for the local area through the local DC output connection. The input of the inverter system 19 is connected to the storage battery 18 , the output is connected to the household power line 25 through the inverter system power output line 27 , and connected to the microprocessor through the inverter system control line 20 . When the inverter system is active, it adds power to the grid.

The two input terminals of the local AC power controller 23 are respectively connected to the charging control system power input line 26 and the inverter system power output line 27 , and are connected to the microprocessor through the local AC power controller control line 24 .

The terminal power line carrier communication module adopts Guangzhou Zhiyuan Electronics Co., Ltd.: ZPLC-10EVB.

The terminal electrical parameter acquisition module adopts Shandong Lichuang Technology Co., Ltd.: EDA9033E.

The storage battery is Fengfan Co., Ltd.: 6-QW-100.

The microprocessor of the cloud energy storage terminal adopts a single-chip microcomputer, and the circuit diagrams are shown in Figures 4 to 8.

MCU U11: MSP430F5438 is from TEXAS INSTRUMENTS in the United States.

In the schematic diagram of the RS232 interface of the microprocessor in Fig. 5, U8: MAX232: The RS232 interface chip is Maxim Company of the United States. CH3 LOOPa, CH3 LOOPb are connected with the terminal power line carrier communication module communication interface connection line.

CH4 LOOPa, CH4 LOOPb are connected with the communication interface connection line of the terminal electrical parameter acquisition module.

Figure 6 UP18: LM26400Y in the five-volt to three-volt power conversion circuit: the power conversion chip is from NATIONALSEMICONDUCTOTR Company of the United States.

Accompanying drawing 9 is the structural diagram of the charging control system.

The charging control system is composed of an adjustable input reactance circuit 40 , a charging control module 41 , and a charging state monitoring 50 .

Charging state monitoring is used to monitor the charging voltage and charging current during the charging process, and calculate the charging state of the battery according to the charging voltage and charging current.

Refer to Figure 10 and Figure 11 for the structure diagram and schematic diagram of the adjustable input reactance.

The adjustable input reactance structure is one of the important nodes to ensure the realization of the present invention.

The adjustable input reactance is to connect two groups of relays and inductors in series combination LA and LB on the connection terminals AVINA and AVINB of the household power line respectively. The inductance values in LA and LB are equal, and the other ends of LA and LB are connected to the terminal LOP respectively. and terminal LOL, a relay and capacitor series combination LC is set between the terminals LOP and LOL, one end of the LC is connected to the connection terminal LOP, and the other end is connected to the connection terminal LOL, and each capacitance value in the LC is equal.

In this embodiment, the adjustable input reactance circuit 40, in the combination LA of the relay and the inductor in series, one end of the relay LA1, the relay LA2, and the relay LA3 is connected to the AVINA terminal, and the other end is respectively connected in series with the inductor LA1, the inductor LA2, and the inductor LA3 , the other end of the inductor LA1, the inductor LA2, and the inductor LA3 is connected to the connection terminal LOP, and the terminal LOP is connected to the same-named terminal of the charging control module. In the combination LB of relay and inductor in series, one end of relay LB1, relay LB2, and relay LB3 is connected to AVINB terminal, and the other end is connected in series with inductor LB1, inductor LB2, and inductor LB3 respectively, and the other end of inductor LB1, inductor LB2, and inductor LB3 is connected to connection terminal LOL.

In the series combination of relay and capacitor LC, relay LC1, relay LC2, and relay LC3 are respectively connected in series with capacitor LC1, capacitor LC2, and capacitor LC3. One end of relay LC1, relay LC2, and relay LC3 is connected to the LOL terminal, and the other end is respectively connected to capacitor LC1, Capacitor LC2 and capacitor LC3 are connected in series, and the other ends of capacitor LC1 , capacitor LC2 and capacitor LC3 are connected to connection terminal LOP.

The inductance values of inductor LA1, inductor LA2, inductor LA3, inductor LB1, inductor LB2, and inductor LB3 are equal, and the inductance value is LLA, and the unit is Henry; the capacitance values of capacitor LC1, capacitor LC2, and capacitor LC3 are equal, and the capacitance value is CLA , the unit is farad. The inductance value LLA is determined by the calculation and experiment of the specific circuit according to the needs of the peripheral circuit, and it is guaranteed that the input reactance is pure resistance when the inductance LA1, inductance LA2, inductance LB1, inductance LB2, capacitor LC1, and capacitor LC2 are connected.

In Figure 11, KT1, KT2, and KT3 are LY2-J from Omron Corporation of Japan. KT4, KT5, KT6 are Japanese Omron Company, LY1-J. UT1, UT2, UT3, UT4, UT5, UT6 are produced by Toshiba, Japan, TLP521. QT4, QT5, QT7, QT8, QT10, and QT12 are SS9013 produced by Fairchild Semiconductor Corporation of the United States. QT1, QT2, QT3, QT6, QT9, and QT11 are IN4148 of Fairchild Semiconductor Corporation of the United States.

In the schematic diagram of the charging control module in Figure 12, DR1, DR2, DR4, DR5, DR6, DR7, DR9, DR10, and DR12 are MUR3060PT produced by Fairchild Semiconductor Corporation of the United States.

QR1, QR2, QR3, QR4, QR10, QR12: STP12NM50 produced by STMicroelectronics in the United States.

DR8, DR11, DR13, DR14, DR15, and DR16 are IN4148 produced by Fairchild Semiconductor Corporation of the United States. QR5, QR8, QR9, QR10, QR11, QR12: SS9013 produced by Fairchild Semiconductor Corporation of the United States.

UR1, UR2, UR3, UR4, UR5, UR6: TLP521 produced by Toshiba Corporation.

Connection relationship: P1.4, P1.6, P1.6, P3.0, P3.1, P3.2 are connected to the single-chip microcomputer circuit with the same name; CP is connected to the positive pole of the battery, and CG is connected to the network with the same name in the charging state monitoring schematic diagram; LOP, LOL are connected to the same-named connection line of the adjustable input reactance circuit.

The charging state monitoring 50 is used to monitor the charging voltage and charging current during the charging process, and calculate the battery charging state according to the charging voltage and charging current. In the schematic diagram of charge state monitoring in Figure 13, US1 is CS5460 produced by CIRRUS LOGIC of the United States.

SW2_3, SW1_3, DOWN_3, UP_3, SELECT_3, RIGHT_3, LEFT_3, BSLRX_3 are connected to the MCU with the same name. CP and CG are connected to the same name cable of the charging control module. CS is connected to the negative pole of the battery.

The input of the inverter system 19 is connected to the storage battery 18 , the output is connected to the household power line 25 through the inverter system power output line 27 , and connected to the microprocessor through the inverter system control line 20 .

In the schematic diagram of the inverter system in FIG. 14 , the inverter system is composed of three circuit modules: an inverter power supply 28 , a synchronous circuit 30 , and an output reactance adjustable circuit 29 . The output of the inverter power supply 28 is connected to the output reactance adjustable circuit 29, and the output of the output reactance adjustable circuit is connected to the household power line 25. The inverter power supply is used to convert the battery power into an AC power supply that can supply power to the grid. The synchronous circuit extracts Grid power synchronization signal, the output reactance adjustable circuit is used to adjust the output reactance.

The synchronization circuit takes out the synchronization signal of the household power line from the household power line, and sends the synchronization signal to the microprocessor. voltage alternating current. The microprocessor also controls whether the adjustable reactance circuit outputs power, and controls the adjustable reactance circuit to output a reactance value. The inverter power supply converts the DC power of the battery into an AC power with the same frequency and the same voltage as the incoming power line, and sends the AC power to the reactance adjustable circuit. Under the control of the microprocessor, the adjustable output reactance circuit can choose whether to output power and what kind of reactance to output.

In Fig. 15 inverter power schematic diagram: UP2 is Mitsubishi Corporation of Japan: PM50B5LA060.

UP1, UP3, UP4, UP5, UP8 are HCPL-4506 produced by Avago Technologies Limited, USA. UP6, UP7, UP9 are TLP521 produced by Toshiba Corporation of Japan.

DV+, DV-: DV+ is connected to the positive pole of the battery; DV- is connected to the negative pole of the battery.

SWITCH1, SWITCH2, SWITCH3, SWITCH4, SWITCH5, BUTTON1, BUTTON2, BUTTON3 are the inverter system control lines connected between the inverter system and the microprocessor, SWITCH1, SWITCH2, SWITCH3, SWITCH4, SWITCH5 are respectively connected to the MCU circuit with the same name , BUTTON1, BUTTON2, and BUTTON3 are respectively connected to the BUTTON_1, BUTTON_2, and BUTTON_3 connections of the microcontroller circuit.

The synchronous circuit is used to take out the synchronous signal of the incoming power line.

In the synchronous circuit schematic diagram 16, IN_P, IN_L are connected to the household power line; S_OUT is the detected synchronous signal, which is connected to the microprocessor.

UH1 is a Hall voltage sensor HV25-P, produced by Beijing Huazhi Xingyuan Technology Co., Ltd.

UH2: OP07 operational amplifier, UH3: TLP521 produced by Toshiba Corporation.

The adjustable output reactance circuit is another important node of the present invention.

In Fig. 17, the output reactance adjustable circuit is as follows: an inductor 31-1, 31-2 is respectively connected to the output terminals AVV and AVU of the inverter power supply; The relays C 36-1, 36-2, 36-3 are connected in series to form 3 series circuits, and the 3 series circuits are connected in parallel, respectively connected to the other end of the inductance 31-1, 31-2, the adjustable reactance circuit and the power line entering the household Relays 37 - 1 , 37 - 2 and filter coils 38 - 1 , 38 - 2 are connected in series at the front ends of the connection terminals P220V and L220V respectively. The filter coils 38 - 1 , 38 - 2 are connected to the incoming power line 25 .

The relay C connected in series with double capacitance is called relay CR1, the relay C connected in series with double capacitance is called relay CR2, and the relay C connected in series with quadruple capacitance is called relay CR4.

Let the capacitance value of a double capacitor be X, the capacitance value of a double capacitor is twice that of a double capacitor, which is 2X; the capacitance value of a quadruple capacitor is four times that of a double capacitor, which is 4X, and the capacitors connected in series The relay C is used to select whether to connect the capacitor to the two inductors 31-1, 31-2. Through the control of the relay by the microprocessor, it is selected whether to connect the double capacitor, the double capacitor or the quadruple capacitor. The access method and access capacitance are calculated as follows:

Connecting double capacitor: 1X, connecting double capacitor: 2X, connecting double capacitor and double capacitor at the same time: 3X, connecting quadruple capacitor: 4X, connecting double capacitor and quadruple capacitor at the same time: 5X, Connect double capacitor and quadruple capacitor at the same time: 6X, connect double capacitor, double capacitor and quadruple capacitor at the same time: 7X.

When a 4X capacitor is selected, the output reactance composed of capacitor and inductance is 0, then when the connected capacitor is less than 4X, the input reactance is inductive, the smaller the connected capacitor, the larger the output inductive reactance; then when the connected capacitor is greater than 4X When , the input reactance is capacitive, the larger the access capacitance, the larger the output capacitive reactance.

In the adjustable output reactance circuit, the inductance and capacitance are calculated according to the actual circuit and determined through experiments, and it is guaranteed that when only 4 times the capacitance is connected, the inverter outputs pure resistance.

Figure 18 In the schematic diagram of the output reactance adjustable circuit, FK2, FK3, and FK4 are relays C, which are LY1-J produced by Omron Corporation of Japan. FK1 and FK5 are relays O, which are LY1-J from Omron Corporation of Japan.

FC1 is a double capacitor, FC2 is a double capacitor, and FC3 is a quadruple capacitor.

UF2, UF3, UF5, UF6, and UF7 are TLP521 produced by Toshiba Corporation of Japan.

LED_D1, LED_D2, LED_D3, LED_D4, LED_D5 are connected to the MCU with the same name cable.

Figure 19 is a schematic diagram of the selection system in the local AC power controller, in which:

KS1 and KS2 are LY2-J from Omron Corporation of Japan. YK1, UK2 are produced by Toshiba Corporation, TLP521. CNT_CH1, CNT_CH2, connected to the MCU with the same name cable. P_INA, P_INB: connected to the incoming power line 25 . P220V, L220V are connected to the inverter output. H_USEA, H_USEB provide local AC power.

In the present invention, under the control of the power line carrier communication module of the control center and the power line carrier communication module of the cloud energy storage terminal, the control center respectively performs one-to-one communication with a single cloud energy storage terminal. Here the actual capacity of the storage battery is represented by a percentage, that is, the actual capacity value is the percentage of the actual capacity and the rated capacity.

The communication between the central control system and the cloud energy storage terminal is composed of five bytes in the communication sent by the central control system to the cloud energy storage terminal. The data composition structure is shown in Table 1:

Table 1

The communication protocol sent by the user terminal to the central control system consists of 12 bytes in total, as shown in Table 2.

Table 2

In the present invention, under the control of the power line carrier communication module of the control center and the power line carrier communication module of the cloud energy storage terminal, the control center respectively performs one-to-one communication with a single cloud energy storage terminal, and the program flow includes the software flow of the control center and the cloud energy storage terminal The software flow includes registration subroutine, capacitive power supply subroutine, inductive power supply subroutine, pure resistance power supply subroutine, capacitive load subroutine, inductive load subroutine and pure resistance load subroutine in the control center software flow.

Fig. 20～28 has provided each flowchart of the software of the present invention.

Control Center software process:

Start, the first step is to receive all cloud energy storage terminal data, the second step is to find unregistered cloud energy storage terminals, the third step is to determine whether there are unregistered cloud energy storage terminals, if yes, enter the registration subroutine and execute Then enter the fourth step, no, the fourth step, read the data of the electrical parameter acquisition module of the control center, the fifth step, analyze the grid data, the sixth step, judge whether the grid load is too large, no, go to the eighth step, yes, Judging whether the grid needs capacitive power supply, yes, enter the capacitive power supply subroutine, and return to the first step, no, judge whether the grid needs an inductive power supply, yes, enter the inductive power supply subroutine, and return to the first step, no, enter the pure Resistive power supply subroutine, and return to the first step, the eighth step, to determine whether the grid load is too small, no, return to the first step, yes, enter the ninth step, determine whether the grid needs a capacitive load, yes, enter the capacitive load Subroutine, and return to the first step, no, enter the tenth step, judge whether the grid needs an inductive load, yes, enter the inductive load subroutine, and return to the first step, no, enter the pure resistance load subroutine, return to the first step .

Registration subroutine: start, the first step is to read in the unregistered cloud energy storage terminal data, the second step is to add the unregistered cloud energy storage terminal data to the registry, the third step is to assign the corresponding cloud terminal registration response to OXO1, Finish. Capacitive power supply subroutine: start, the first step is to query whether there is a cloud energy storage terminal used as a power supply, the second step is to receive the data of the cloud energy storage terminal used as a power supply, and the third step is to determine whether the actual capacity of the battery is less than 50 % cloud energy storage terminal? No, go to the fourth step. Yes, the actual capacity is lower than 50%. The cloud energy storage terminal stops working in the power state. At the same time, go to the fourth step to calculate the power required by the network and set it to ALLP. The fifth step is to calculate the power required by the network. Capacitance value, set it as ALLC, the sixth step, sort the cloud energy storage terminals with the actual battery capacity higher than 80% according to the actual capacity percentage of the battery from large to small, when the actual capacity percentage of the battery is the same, press The rated capacity of the battery is sorted. The seventh step is to select the cloud energy storage terminal according to the arrangement until the total output power of the cloud energy storage terminal is greater than ALLP. As a power source to supply power to the grid, the eighth step is to add the maximum output capacitance of the cloud energy storage terminals selected above to get MAXC, divide ALLC by MAXC, and set the result to RATEC. When RATEC is less than 0.5, all cloud The inverter module of the energy storage terminal selects a 5X capacitor. When the RATEC is between 0.5-0.85, select a 6X capacitor. When the RATEC is greater than 0.8, select a 7X capacitor. Finally, return to the main program.

Inductive power supply subroutine: start, the first step is to query whether there is a cloud energy storage terminal used as a power supply, the second step is to receive the data of the cloud energy storage terminal used as a power supply, and the third step is to judge that the actual capacity of the battery is lower than 50% Cloud energy storage terminal? No, enter the fourth step, yes, the actual capacity is less than 50%, the cloud energy storage terminal stops working in the power state, enter the fourth step, the fourth step is to calculate the power required by the network, set it to ALLP, the fifth step, Calculate the inductance value required by the network and set it to ALLL. In the sixth step, the cloud energy storage terminals with the actual battery capacity higher than 80% are sorted from large to small according to the actual percentage of battery capacity. When the actual battery capacity percentage is the same Sorting according to the rated capacity of the battery, the seventh step is to select the cloud energy storage terminal in turn according to the ranking until the total output power of the cloud energy storage terminal is greater than ALLP, and then control the inverter system of the selected cloud energy storage terminal to work, so that the cloud energy storage The terminal acts as a power source to supply power to the grid. In the eighth step, add the maximum output inductance of the cloud energy storage terminal selected above to get MAXL, divide ALLL by MAXL, and set the result to RATE. When RATE is less than 0.5, all The cloud energy storage terminal inverter module selects a 3X capacitor. When the RATE is between 0.5-0.85, select a 2X capacitor. When the RATE is greater than 0.8, select a 1X capacitor. The ninth step returns to the main program.

Pure resistance power supply subroutine:

At the beginning, the first step is to check whether there is a cloud energy storage terminal used as a power source. The second step is to receive the data of the cloud energy storage terminal used as a power source. The third step is to determine whether there is a cloud energy storage terminal with a battery whose actual capacity is less than 50%. ? No, enter the fourth step, yes, the actual capacity of the battery is less than 50%, the cloud energy storage terminal stops working in the power state, enter the fourth step, the fourth step is to calculate the power required by the network, set it to ALLP, the fifth step , the cloud energy storage terminals whose actual battery capacity is higher than 80% are sorted according to the actual capacity percentage of the battery from large to small. When the actual capacity percentage of the battery is the same, the battery is sorted by the rated capacity. The sixth step is to select according to the order Cloud energy storage terminal, until the total output power of the cloud energy storage terminal is greater than ALLP, control the inverter system of the selected cloud energy storage terminal to work, so that the cloud energy storage terminal serves as a power supply to the grid. The seventh step is to select a 4X capacitor. The eighth step, return to the main program.

Capacitive load subroutine: start, the first step is to query whether there is a cloud energy storage terminal used as a load, the second step is to receive the data of the cloud energy storage terminal used as a load, and the third step is to judge that the actual capacity of the battery reaches 100% Cloud energy storage terminal? No, enter the fourth step, yes, the actual capacity of the battery reaches 100%, the cloud energy storage terminal stops working in the load state, and enters the fourth step at the same time, the fourth step is to calculate the load power required by the network, set it to ALLS, the fifth step , calculate the capacitance value required by the network, set it as ALLSC, the sixth step, sort the cloud energy storage terminals with the actual capacity of the battery below 80% according to the actual capacity percentage of the battery, and sort the cloud energy storage terminals from small to large, and the actual capacity percentage of the battery is the same At the same time, sort according to the charging power of the battery. In the seventh step, select the cloud energy storage terminal in sequence according to the arrangement until the total power consumption of the cloud energy storage terminal is greater than ALLS, and then control the charging system of the selected cloud energy storage terminal to work, so that the cloud The energy storage terminal is used as a load to consume energy. The eighth step is to add the adjustable capacitors used as a load in sequence according to the arrangement until the sum is greater than ALLSC. The cloud energy storage terminal before this sorting is called the load capacitor adjustment cloud energy storage Terminals, the cloud energy storage terminals sorted here are called load resistance cloud energy storage terminals. In the ninth step, for the load capacitance adjustment cloud energy storage terminals, the relays are controlled by the microprocessor, so that the relays LA1, LA2, LA3, Relay LB1, relay LB2, relay LB3, relay LC1, relay LC2, relay LC3 are closed, the tenth step, for the load resistance cloud energy storage terminal, the relay is controlled by the microprocessor, so that relay LA1, relay LA2, relay LB1, relay LB2, relay LC1, and relay LC2 are closed, and the eleventh step returns to the main program.

Inductive load subroutine: start, first step,

Query whether there is a cloud energy storage terminal used as a load. The second step is to receive the data of the cloud energy storage terminal used as a load. The third step is to determine whether there is a cloud energy storage terminal with a battery whose actual capacity reaches 100%. No, enter the fourth step, yes, the cloud energy storage terminal with the actual battery capacity reaching 100% stops working in the load state, enter the fourth step, calculate the load power required by the network, set it to ALLS, the fifth step, calculate the network required In the sixth step, the cloud energy storage terminals whose actual battery capacity is less than 80% are sorted according to the actual battery capacity percentage from small to large. When the actual battery capacity percentage is the same, the battery charging power is used Size sorting, the seventh step, select cloud energy storage terminals in turn according to the sorting, until the total power consumption of cloud energy storage terminals is greater than ALLS, control the charging system of the selected cloud energy storage terminals, so that cloud energy storage terminals can be used as loads Energy consumption, the eighth step, add the adjustable inductances used as loads according to the arrangement, until the sum is greater than ALLSL, the cloud energy storage terminal before this sorting becomes the load inductance adjustment cloud energy storage terminal, after this sorting The cloud energy storage terminal is called the load resistance cloud energy storage terminal. The ninth step is to adjust the cloud energy storage terminal for the load inductance. The relay is controlled by the microcontroller to close the relay LA1, relay LB1, and relay LC1. The tenth step is for the load resistance The cloud energy storage terminal controls the relays through the microcontroller to close the relays LA1, LA2, LB1, LB2, LC1, and LC2. In the eleventh step, return to the main program.

Pure resistive load subroutine: start, the first step is to query whether there is a cloud energy storage terminal used as a load, the second step is to receive the data of the cloud energy storage terminal used as a load, and the third step is to judge that the actual capacity of the battery reaches 100% Cloud energy storage terminal? No, go to the fourth step, yes, the actual capacity of the battery reaches 100%, the cloud energy storage terminal stops working in the load state, go to the fourth step; the fourth step, calculate the load power required by the network, set it to ALLS, the fifth step, The cloud energy storage terminals whose actual battery capacity is 80% lower are sorted according to the actual battery capacity percentage from small to large. When the actual battery capacity percentage is the same, the batteries are sorted according to the charging power. The sixth step is to select cloud energy storage according to the sorting order Terminal, until the total power consumption of the cloud energy storage terminal is greater than ALLS, control the charging system of the selected cloud energy storage terminal to work, so that the cloud energy storage terminal can be used as a load to consume energy. Step 7, for the selected cloud energy storage terminal The terminal controls the relays through the microprocessor so that the relays LA1, LA2, LB1, LB2, LC1 and LC2 are closed and then return to the main program.

Yunyun energy storage terminal software process: start, the first step is to receive the control center command, the second step is to judge whether the registration response word of the control center is 0X01? Yes, cloud energy storage center registration status word = 0X01, enter the fourth step, no, third step, cloud energy storage terminal status value = 0X00, fourth step, determine whether it is working in the charging energy consumption mode? Yes, enter the sixth step, no, the fifth step starts the charging energy consumption mode for charging, the sixth step, read the charging status monitoring data, the seventh step, calculate the actual capacity and the rated capacity percentage of the battery according to the charging status data, and calculate the charging Power, the eighth step, judge whether it is working in the charging energy consumption mode? Yes, select the charging system to work: select capacitive load, inductive load or resistive load according to the command of the control center, no, enter the twelfth step, the ninth step, continue to charge for 5 minutes and stop charging, the tenth step, judge that the work is in power mode ? No, go to the twelfth step, yes, the eleventh step, select the inverter system to work: select the capacitive power supply, inductive power supply or pure resistance power supply according to the command of the control center, the twelfth step, collect the data of the machine, and turn the machine The status is sent to the control center and returns to the first step.

Claims (10)

1. a kind of energy internet system construction method based on cloud energy storage terminal, it is characterised in that：System is based on several clouds Energy storage terminal, builds the energy internet system being made of a control centre and several cloud energy storage terminals, and control centre contains Industrial control computer (8), control centre's electrical parameter acquisition module (6), control centre's Power Line Carrier Communication Module (7), control EGC parameter acquisition module (6) in system, control centre's Power Line Carrier Communication Module (7) by the connecting line of power line (4-1~ 4-3) it is connected respectively with three-phase power line A phases, B phases and C, several clouds is connected respectively in three-phase power line A phases, B phases and C phases Energy storage terminal, cloud energy storage terminal individually form intercommunication system by electric line carrier communication mode with control centre；

Cloud energy storage terminal is by terminal Power Line Carrier Communication Module (12), terminal electrical parameter acquisition module (14), charge control system It unites (16), accumulator (18), inversion system (19), locally exchange dsm controller (23) and microprocessor (11) are formed, charging Increase load for power grid when control system (16) works, increase power supply for power grid when inversion system (19) works；

In the control of control centre's Power Line Carrier Communication Module (7) and cloud energy storage terminal Power Line Carrier Communication Module (12) Under, control centre carries out One-to-one communication pattern with single cloud energy storage terminal respectively, passes through control centre and cloud energy storage terminal One-to-one communication analyzes network load size, to the adjustable input electricity of charge control system (16) in cloud energy storage terminal Reactive circuit (40) and the output reactance conditioned circuit (29) of inversion system (19) is regulated and controled, can not only be used for cloud energy storage terminal Power supply uses, and can also be used as load, when cloud energy storage terminal works as power supply in use, arbitrarily adjusting output reactance as capacitive, perception Or pure resistance output, when as load, capacitive load, inductive load or pure resistor load are arbitrarily adjusted to, and then adjust electricity The equilibrium of supply and demand of net.

2. the energy internet system construction method based on cloud energy storage terminal as described in claim 1, it is characterised in that：It is described Regulation and control specific practice is carried out to the output reactance conditioned circuit (29) of inversion system is；

The relay C to connect with one times of capacitance is known as relay CR1, and the relay C to connect with two times of capacitances is known as relay CR2, the relay C to connect with four times of capacitances are known as relay CR4；

If the capacitance of one times of capacitance is X, the capacitance of two times of capacitances is twice of one times of capacitance, is 2X；The electricity of four times of capacitances Capacitance is four times of one times of capacitance, is 4X, is used to choose whether to arrive the road capacitance connection with the relay C of each capacitance series winding Two inductance (31-1,31-2) by control of the microprocessor to relay, select one times of capacitance, two times of capacitances, four times of capacitances Whether access, cut-in method and access capacitance calculating are as follows：

Access one times of capacitance：1X accesses two times of capacitances：2X,

One times of capacitance and two times of capacitances are accessed simultaneously：3X accesses four times of capacitances：4X,

One times of capacitance and four times of capacitances are accessed simultaneously：5X, while access two times of capacitances and four times of capacitances：6X,

One times of capacitance, two times of capacitances and four times of capacitances are accessed simultaneously：7X,

During choosing access 4X capacitances, the output reactance of capacitance and inductance composition is 0 under electric network source frequency, then when access capacitance is small When 4X, input reactance is perception, and access capacitance is smaller, and output induction reactance is bigger；When accessing capacitance more than 4X, input reactance is Capacitive, access capacitance is bigger, and output capacitive reactance is bigger；

Control centre's software flow：

Start, the first step, receive all cloud energy storage terminal datas, second step searches the cloud energy storage terminal without registering, third Step, judges whether there is the cloud energy storage terminal do not registered, has, and into registration subroutines, enters the 4th step after performing registration subroutines, Nothing, the 4th step read control centre's electrical parameter acquisition module data, and the 5th step analyzes electric network data, and the 6th step judges power grid Whether load is excessive, no, into the 8th step, is to judge whether power grid needs capacitive power, is, into capacitive power subprogram, And the first step is returned, and it is no, judge whether power grid needs perceptual power, be, into perceptual power subprogram, and return to the first step, It is no, into pure resistance power supply subprogram, and the first step is returned to, the 8th step judges whether network load is too small, no, returns to first Step, is into the 9th step, to judge whether power grid needs capacitive load, be, into capacitive load subprogram, and return to the first step, It is no, into the tenth step, judge whether power grid needs inductive load, be, into inductive load subprogram, and return to the first step, it is no, Into pure resistor load subprogram, the first step is returned.

3. the energy internet system construction method based on cloud energy storage terminal as described in claim 1, it is characterised in that：Cloud stores up The inversion system (19) of energy terminal is by (29) three inverter (28), synchronous circuit (30), output reactance conditioned circuit circuits Module forms, and the output of inverter is connected to output reactance conditioned circuit, the output of output reactance conditioned circuit be connected into Family power line (25), inverter are used to be converted to battery feed the AC power of power grid power supply, synchronous circuit extraction electricity Network source synchronizing signal, output reactance conditioned circuit are used to adjust output reactance；

Synchronous circuit (30) takes out the synchronizing signal for power line of registering one's residence from power line of registering one's residence (25), gives synchronizing signal to micro- place Device (11) is managed, microprocessor generates the control signal with electric power line locking of registering one's residence, and control inverter (28) generates and electricity of registering one's residence The line of force is with frequency with the alternating current of equivalent voltage；Microprocessor also control output reactance conditioned circuit (29) whether out-put supply, and Control output reactance conditioned circuit output reactance value；The direct current of accumulator (18) is converted into and registers one's residence electricity by inverter (28) The line of force, with equivalent voltage alternating current, gives alternating current to output reactance conditioned circuit (29) with frequency；Output reactance conditioned circuit exists Under microprocessor control, choose whether out-put supply, which type of reactance exported.

4. the energy internet system construction method based on cloud energy storage terminal as described in claim 1, it is characterised in that：It is described In the control of control centre's Power Line Carrier Communication Module (7) and the terminal Power Line Carrier Communication Module (12) of cloud energy storage terminal Under, control centre carries out One-to-one communication pattern with single cloud energy storage terminal respectively, and program circuit includes control centre's software flow Journey and cloud energy storage terminal software flow, containing registration subroutines, capacitive power subprogram, perception electricity in control centre's software flow Source subprogram, pure resistance power supply subprogram, capacitive load subprogram, inductive load subprogram and pure resistor load subprogram：

In control centre's software flow,

Registration subroutines：Start, the first step reads in unregistered cloud energy storage terminal data, second step, by unregistered cloud energy storage terminal Data add in registration table, and the registration of corresponding cloud terminal is responded assignment OXO1, terminated by third step；

Capacitive power subprogram：Start, the first step, whether inquiry has the cloud energy storage terminal for being used as power supply, second step, and reception is used as The cloud energy storage terminal data of power supply, third step judge whether there is the cloud energy storage terminal that storage battery practical capacity is less than 50%, do not have Having, into the 4th step, have, actual capacity is stopped less than 50% cloud energy storage terminal in power supply status, while enters the 4th step, The power that network needs is calculated, if it is ALLP, the 5th step calculates the capacitance that network needs, if it is ALLC, the 6th Step, cloud energy storage terminal of the storage battery practical capacity higher than 80% is according to storage battery practical capacity percentage size from big to small to cloud Energy storage terminal sorts, and when storage battery practical capacity percentage is identical, sorts by battery rating size, the 7th step, according to Arrangement selects cloud energy storage terminal successively, and until the exportable power supply summation of cloud energy storage terminal is more than ALLP, control is selected Cloud energy storage terminal inversion system works, and cloud energy storage terminal is made to power as power supply to power grid, and the 8th step stores up the cloud of above-mentioned selection Can after terminal maximum output capacitance itself and be MAXC, with ALLC divided by MAXC, obtained result is set as RATEC, works as RATEC During less than 0.5, all cloud energy storage terminal inverter modules select 5X capacitances, when RATEC is between 0.5-0.85, selection selection 6X Capacitance when RATEC is more than 0.8, selects 7X capacitances, finally, returns to main program；

Perceptual power subprogram：Start, the first step, whether inquiry has the cloud energy storage terminal as power supply, second step, and reception is used as The cloud energy storage terminal data of power supply, third step judge whether there is the cloud energy storage terminal that storage battery practical capacity is less than 50%, no, Into the 4th step, having, actual capacity is stopped less than 50% cloud energy storage terminal in power supply status, into the 4th step, the 4th step, The power that network needs is calculated, if it is ALLP, the 5th step calculates the inductance value that network needs, if it is ALLL, the 6th Step, cloud energy storage terminal of the storage battery practical capacity higher than 80% is by accumulator capacity actual percentage from big to small to cloud energy storage end End sequence, when storage battery practical capacity percentage is identical according to battery rating size sort, the 7th step, according to sequence according to Secondary selection cloud energy storage terminal, until the exportable power supply summation of cloud energy storage terminal is more than ALLP, controls selected cloud energy storage Terminal inversion system works, and cloud energy storage terminal is made to power as power supply to power grid, the 8th step, by the cloud energy storage terminal of above-mentioned selection After maximum output inductance is added itself and for MAXL, with ALLL divided by MAXL, obtained result is set as RATE, when RATE is less than 0.5 When, all cloud energy storage terminal inverter modules select 3X capacitances, when RATE is between 0.5-0.85, selection selection 2X capacitances, when When RATE is more than 0.8,1X capacitances are selected, the 9th step returns to main program；

Pure resistance power supply subprogram：

Start, the first step, whether inquiry has the cloud energy storage terminal as power supply, and it is whole to receive the cloud energy storage as power supply for second step End data, third step judge whether there is the cloud energy storage terminal that storage battery practical capacity is less than 50%, no, into the 4th step, have, Storage battery practical capacity is stopped less than 50% cloud energy storage terminal in power supply status, and into the 4th step, the 4th step calculates network The power needed, if it is ALLP, the 5th step, cloud energy storage terminal of the storage battery practical capacity higher than 80% is by accumulator reality Border volume percent size from big to small sorts to storage battery terminal, and accumulator when storage battery practical capacity percentage is identical is pressed Rated capacity size sorts, the 6th step, cloud energy storage terminal is selected successively according to sequence, until the exportable power supply of cloud energy storage terminal is total Until more than ALLP, selected cloud energy storage terminal inversion system is controlled to work, make cloud energy storage terminal as power supply to power grid Power supply, the 7th step select 4X capacitances, and the 8th step returns to main program；

Capacitive load subprogram：Start, the first step, whether inquiry has the cloud energy storage terminal for being used as load, second step, and reception is used as The cloud energy storage terminal data of load, third step, judges whether there is the cloud energy storage terminal that storage battery practical capacity reaches 100%, does not have Have, into the 4th step, have, storage battery practical capacity reaches 100% cloud energy storage terminal and is stopped in load condition, enters simultaneously 4th step, the 4th step calculate the bearing power that network needs, if it is ALLS, the 5th step calculates the capacitance that network needs, If it is ALLSC, the 6th step, cloud energy storage terminal of the storage battery practical capacity less than 80% is according to storage battery practical capacity percentage Size from small to large sorts to cloud energy storage terminal, when storage battery practical capacity percentage is identical, by accumulator charge power size Sequence, the 7th step select cloud energy storage terminal successively according to arrangement, until the consumable power summation of cloud energy storage terminal is more than ALLS Until, selected cloud energy storage terminal charging system is controlled to work, cloud energy storage terminal is made to be used as load and is consumed energy, the 8th step, foundation The tunable capacitor that arrangement will act as load successively is added, and until it and more than ALLSC, the cloud energy storage terminal before sorting herein is known as Load capacitance adjusts cloud energy storage terminal, and the cloud energy storage terminal after sorting herein is known as load resistance cloud energy storage terminal, and the 9th step is right Cloud energy storage terminal is adjusted in load capacitance, relay is controlled by microprocessor, makes relay LA1, relay LA2, relay LA3, relay LB1, relay LB2, relay LB3, relay LC1, relay LC2, relay LC3 are closed, and the tenth step is right In load resistance cloud energy storage terminal, relay is controlled by microprocessor, make relay LA1, relay LA2, relay LB1, Relay LB2, relay LC1, relay LC2 are closed, and the 11st step returns to main program；

Inductive load subprogram：Start, the first step, whether inquiry has the cloud energy storage terminal as load, second step, and reception is used as The cloud energy storage terminal data of load, third step, judges whether there is the cloud energy storage terminal that storage battery practical capacity reaches 100%, no, Into the 4th step, have, the cloud energy storage terminal that storage battery practical capacity reaches 100% is stopped in load condition, into the 4th Step calculates the bearing power that network needs, if it is ALLS, the 5th step calculates the inductance value that network needs, if it is ALLSL, 6th step, cloud energy storage terminal of the storage battery practical capacity less than 80% from small to large store up cloud by storage battery practical capacity percentage Energy terminal sequence, sorts when storage battery practical capacity percentage is identical according to accumulator charge power size, the 7th step, according to row Sequence selects cloud energy storage terminal successively, and until the consumable power summation of cloud energy storage terminal is more than ALLS, control is selected Cloud energy storage terminal charging system works, and cloud energy storage terminal is made to be used as load and is consumed energy, the 8th step will act as loading successively according to arrangement Controllable impedance be added, until it and more than ALLSL, the cloud energy storage terminal before sorting herein becomes load inductance and adjusts cloud energy storage Terminal, the cloud energy storage terminal after sorting herein are known as load resistance cloud energy storage terminal, and the 9th step adjusts cloud storage for load inductance Energy terminal controls relay by microprocessor, is closed relay LA1, relay LB1, relay LC1, the tenth step, for Load resistance cloud energy storage terminal, by microprocessor control relay, make relay LA1, relay LA2, relay LB1, after Electric appliance LB2, relay LC1, relay LC2 are closed, and the 11st step returns to main program；

Pure resistor load subprogram：Start, the first step, whether inquiry has the cloud energy storage terminal as load, and second step is received and used Make the cloud energy storage terminal data loaded, third step judges whether there is the cloud energy storage terminal that storage battery practical capacity reaches 100%, It is no, into the 4th step, have, storage battery practical capacity reaches 100% cloud energy storage terminal and is stopped in load condition, into the 4th Step；4th step calculates the bearing power that network needs, if it is ALLS, the 5th step, and the cloud storage of storage battery practical capacity low 80% Energy terminal from small to large sorts to cloud energy storage terminal by storage battery practical capacity percentage size, storage battery practical capacity percentage It sorts when identical by the charge power size of accumulator, the 6th step selects cloud energy storage terminal, until cloud energy storage successively according to sequence Until the consumable power summation of terminal is more than ALLS, selected cloud energy storage terminal charging system is controlled to work, makes cloud energy storage Terminal is used as load and consumes energy, the 7th step, for selected cloud energy storage terminal, controls relay by microprocessor, makes relay Device LA1, relay LA2, relay LB1, relay LB2, relay LC1, relay LC2 return to main program after being closed.

5. the energy internet system construction method based on cloud energy storage terminal as claimed in claim 3, it is characterised in that：It is described Cloud energy storage terminal software flow：Start, the first step, receive control centre's order, second step judges the registration response of control centre Whether word is 0X01, is, cloud energy storage center login state word=0X01, no into the 4th step, third step, cloud energy storage terminal shape State value=0X00, the 4th step judge whether to be operated in charging energy consumption pattern, are, no into the 6th step, and the 5th step, which starts, to charge Energy consumption pattern charges, the 6th step, reads charged state monitoring data, and the 7th step calculates electric power storage according to charged state data Pond actual capacity and rated capacity percentage calculate charge power, and the 8th step judges whether to be operated in charging energy consumption pattern, is, Select charging system work：According to control centre's command selection capacitive load, inductive load or ohmic load, into the 12nd Step, no, the 9th step persistently charge 5 minutes and stop charging, and the tenth step judges whether to be operated in electric source modes, no, into the tenth Two steps are the 11st steps, select inversion system work：According to control centre's command selection capacitive power, perceptual power or pure electricity Power supply is hindered, the 12nd step acquires native data, and local state is sent to control centre, returns to the first step.

It is 6. a kind of as described in claim 1 based on being based on used in the energy internet system construction method of cloud energy storage terminal The energy interacted system equipment of cloud energy storage terminal, it is characterised in that：

Equipment is made of a control centre and several cloud energy storage terminals, and control centre is containing industrial control computer (8), control Middle EGC parameter acquisition module (6), control centre's Power Line Carrier Communication Module (7), control centre's electrical parameter acquisition module (6), control centre's Power Line Carrier Communication Module (7) by the connecting line (4-1~4-3) of power line respectively with three-phase power line Connection, connects several cloud energy storage terminals, cloud energy storage terminal is carried by power line respectively in three-phase power line A phases, B phases and C phases Wave communication modes individually form intercommunication system together with control centre；

A total of a, cloud energy storage terminal being connected in A phase lines, a total of b-a, cloud energy storage terminal being connected in B phase lines, A total of c-b, cloud energy storage terminal being connected in C phase lines, wherein, c is more than b, and b is more than a；

Cloud energy storage terminal is by terminal Power Line Carrier Communication Module (12), terminal electrical parameter acquisition module (14), charge control system It unites (16), accumulator (18), inversion system (19), locally exchange dsm controller (23) and microprocessor (11) are formed, charging Increase load for power grid when control system works, increase power supply for power grid when inversion system works；

Charge control system is adjustable containing adjustable input reactance circuit (40), charge control module (41), charged state monitoring (50) Input reactance circuit is to connect two group relays and inductance string respectively on link the terminal AVINA and AVINB for power line of registering one's residence Each inductance value is equal in combination LA, LB of connection, LA, LB, the other end difference connection terminal LOP and terminal LOL of LA and LB, One end of relay and capacitance tandem compound LC, LC is set to be connected to connection terminal LOP, the other end between terminal LOP, LOL The each capacitance being connected in connection terminal LOL, LC is equal；

Inversion system is made of (29) three inverter (28), synchronous circuit (30), output reactance conditioned circuit circuit modules, Output reactance conditioned circuit is：An inductance (31-1,31-2), one times of electricity are connected respectively in inverter output terminals A VV and AVU Appearance (33), two times of capacitances (34), four times of capacitances (35) are respectively in series with a relay C (36-1,36-2,36-3) 3 series circuits, three series circuit parallel connections are connected to the other end of inductance (31-1,31-2), output reactance adjustable electric The front end of the connection terminal P220V, L220V of road and power line of registering one's residence are in series with relay (37-1,37-2) and wave filtering wire respectively It encloses (38-1,38-2), filter coil (38-1,38-2) is registered one's residence power line (25).

7. the energy interacted system equipment based on cloud energy storage terminal as claimed in claim 6, it is characterised in that：Control centre's electricity Parameter collection module communication interface connecting line (9) connection control centre's electrical parameter acquisition module (6) and industrial control computer (8), communication connection therebetween, communication interface RS232 are provided；Control centre's Power Line Carrier Communication Module communication interface Connecting line (10) connection control centre's Power Line Carrier Communication Module (7), provides communication connection therebetween, communication interface is RS232；

For cloud energy storage terminal, terminal Power Line Carrier Communication Module (12) is connected to micro- place by communication interface connecting line (13) Manage device (11), communication interface RS232.

8. the energy interacted system equipment based on cloud energy storage terminal as claimed in claim 6, it is characterised in that：

The input terminal of terminal electrical parameter acquisition module (14) connects power line of registering one's residence (25), charge control system power input respectively Line (26), inversion system power supply output line (27) measure register one's residence power line (25), charge control system power input line respectively (26), inversion system power supply output line (27) electrical parameter, and pass through terminal electrical parameter acquisition module communication interface connecting line with it is micro- Processor connects, communication interface RS232；

The input of charge control system is connected to power line of registering one's residence (25) by charge control system power input line (26), output Accumulator (18) is connected, is connect by charge control system control line (17) with microprocessor, charged state monitoring (50) is used for The charging voltage and charging current in charging process are monitored, and according to charging voltage and charging current calculating accumulator charging shape State；

Accumulator (18) is connect with charge control system (16), inversion system (19), local direct current output (21), is controlled by charging System processed charges for accumulator, and accumulator provides power supply by inversion system for power grid, and accumulator is connected by local direct current output Local offer DC power supply is provided；

The input of inversion system (19) is connected to accumulator (18), output by inversion system power supply output line (27) be connected into Family power line (25) is connected to microprocessor by Inversion Control System line (20)；

Two input terminals of local exchange dsm controller (23) connect charge control system power input line (26) and inverse respectively Become system power supply output line (27), and pass through local exchange dsm controller control line (24) and be connected to microprocessor (11).

9. the energy interacted system equipment based on cloud energy storage terminal as claimed in claim 6, it is characterised in that：It is described adjustable defeated Enter reactance circuit (40), in the combination LA to connect in relay with inductance, relay LA1, relay LA2, relay LA3 one End is connected to AVINA terminals, and the other end is connected respectively with inductance LA1, inductance LA2, inductance LA3, inductance LA1, inductance LA2, electricity The other end of sense LA3 is connected to connection terminal LOP, and terminal LOP is connect with charge control module terminal of the same name；

In the combination LB that relay is connected with inductance, relay LB1, relay LB2, relay LB3 one end be connected to AVINB Terminal, the other end are connected respectively with inductance LB1, inductance LB2, inductance LB3, inductance LB1, inductance LB2, inductance LB3 the other end It is connected to connection terminal LOL；

In relay and capacitance tandem compound LC, relay LC1, relay LC2, relay LC3 difference series capacitances LC1, Capacitance LC2, capacitance LC3, relay LC1, relay LC2, relay LC3 one end be connected to LOL terminals, the other end respectively with Capacitance LC1, capacitance LC2, capacitance LC3 series connection, capacitance LC1, capacitance LC2, capacitance LC3 the other end be connected to connection terminal LOP；

Inductance LA1, inductance LA2, inductance LA3, inductance LB1, inductance LB2, the inductance value of inductance LB3 are equal, if inductance value is LLA, unit Henry；Capacitance LC1, capacitance LC2, the capacitance of capacitance LC3 are equal, if capacitance is CLA, unit is farad；

Inductance value LLA according to peripheral circuit need by physical circuit calculating and experiment determine, and ensure access inductance LA1, Input reactance is pure resistance under electric network source frequency when inductance LA2, inductance LB1, inductance LB2, capacitance LC1, capacitance LC2.

10. the energy interacted system equipment based on cloud energy storage terminal as claimed in claim 6, it is characterised in that：

The relay C to connect with one times of capacitance is known as relay CR1, and the relay C to connect with two times of capacitances is known as relay CR2, the relay C to connect with four times of capacitances are known as relay CR4；

The capacitance of one times of capacitance is X, and the capacitance of two times of capacitances is twice of one times of capacitance, is 2X；The capacitance of four times of capacitances Value is four times of one times of capacitance, is 4X, is used to choose whether the road capacitance connection to two with the relay C of each capacitance series winding A inductance (31-1,31-2) by control of the microprocessor to relay, selects one times of capacitance, two times of capacitances, four times of capacitances to be No access, cut-in method and access capacitance calculate as follows：

Access one times of capacitance：1X accesses two times of capacitances：2X,

One times of capacitance and two times of capacitances are accessed simultaneously：3X accesses four times of capacitances：4X,

One times of capacitance and four times of capacitances are accessed simultaneously：5X, while access two times of capacitances and four times of capacitances：6X,

One times of capacitance, two times of capacitances and four times of capacitances are accessed simultaneously：7X,

During choosing access 4X capacitances, the output reactance under electric network source frequency of capacitance and inductance composition is 0, and inverter exports pure electricity Resistance.