CN204103569U - A kind of high-power portable trough-electricity energy storage emergency power supply room - Google Patents

Abstract

A high-power mobile low-valley energy storage emergency power supply house. The interior of the power supply house is equipped with a high-power mobile low-peak energy storage emergency power supply system, including power system switching and DC power output, and a vanadium battery low-peak energy storage system; One side of the main system power supply is connected to the AC shunt output terminal through the switching of the power system, and the other way is connected to the vanadium battery low-valley energy storage system for energy storage and charging; After the converter is inverted, it is connected to the output end of the AC branch, and the other is connected to the output end of the DC branch. The utility model can output AC, variable-frequency AC and DC power supplies. When the main system power supply suddenly fails, it can support some equipment to continue to supply power to ensure that some equipment on site can work safely within a certain period of time; the vanadium battery energy storage device has high power and low cost. Low cost; remarkable energy saving and cost reduction; the utility model can be pre-assembled and debugged in the factory, and transported to the construction site as a whole for use.

Description

A high-power mobile low-valley power storage emergency power house

technical field

The utility model relates to the field of an emergency power supply, in particular to a high-power mobile low-valley power storage emergency power supply house.

Background technique

The electric house is a product that is installed outdoors with an integrated solution for power transformation, power distribution, power consumption and transmission. It integrates high and low voltage switchgear, transformers, medium and low voltage transmission systems, control systems, Electric energy storage devices, emergency power supply and protection monitoring systems and other electrical equipment are reasonably arranged in the customized steel structure room. At the same time, based on the internal and external conditions and requirements of the electrical house, the air conditioning system, lighting system, fire alarm and sound and light alarm system are configured, so that the electrical can meet the needs of personnel for daily maintenance and security. The entire electrical house is designed, built, installed, interconnected and wired according to customer needs, inspected and debugged as a whole, and then transported to the customer's site as a whole, and can be put into use after being directly powered on. It is also called a pre-installed mobile electrical house or a mobile electrical house. Because most of them are in the field, sometimes the construction period of the project is tight, so the equipment is required to be pre-installed, and there is no need to build a new factory building, which is convenient and energy-saving. It can be seen that the demand for such devices is increasing.

Traditional prefabricated electrical houses lack optimal control of humidity and temperature, especially in environments with salt spray, humidity and windy sand.

In addition, the traditional prefabricated electric house also has a DC power supply, but the capacity is small, and there is no low-valley vanadium battery energy storage device. When the power supply of the main system suddenly stops supplying power, some equipment cannot stop working, and an emergency pre-installed power supply is required to ensure safe operation on site.

High-efficiency large-scale energy storage batteries are the core of the new energy industry revolution. Vanadium battery (VRB) is the world's largest, most technologically advanced and highly efficient reversible fuel cell closest to industrialization. It has a series of unique advantages such as large power, large capacity, high efficiency, low cost, long life, and environmental protection. It has extremely good application prospects in photovoltaic power generation, wind power generation, power grid peak regulation, distributed power stations, communication base stations, UPS or EPS, electric buses, military power storage, etc. It has started commercial use in the United States, Canada, Europe, Japan, and Australia application. With the rapid development of vanadium battery technology, vanadium batteries will surely bring an unprecedented, significant and far-reaching new energy industry revolution to mankind!

Contents of the invention

The utility model provides a high-power mobile low-valley energy storage emergency power supply house, which can output AC, frequency-converted AC and DC power supplies, and supports the power supply of the main system when the power supply suddenly stops, using a vanadium battery energy storage device to enable some equipment to continue Power supply to ensure that some equipment on site can work safely within a certain period of time; vanadium battery energy storage device has high power and low cost; using vanadium battery and low-peak energy storage can achieve significant energy saving and reduce operating costs; this emergency power supply is a An emergency power house with pre-installed mobile low-peak power storage, pre-installed and debugged in the factory, transported to the place of use with a large flatbed truck, and ready to use; suitable for large-scale projects such as mines, railways, petroleum, natural gas and water conservancy Engineering emergency power supply; this emergency power supply adopts an air-conditioned internal temperature control method, and the inside and outside of the house are fully sealed, suitable for working in harsh environmental conditions such as humidity, salt fog, and sandstorms.

In order to achieve the above object, the utility model adopts the following technical solutions:

A high-power mobile low-valley electricity storage emergency power supply house, the external structure of the power supply house includes a bracket module, an escalator handrail, an external wall panel with an insulation layer in the electrical house, a power supply system module, an air conditioner external heat pipe exchanger, and a power supply system module Side door rain cover, power system module side door, platform handrail; the internal structure of the power house includes a high-power mobile low-peak energy storage emergency power system, lighting, air-conditioning internal heat exchanger, smoke monitoring sensor, humidity monitoring sensor, electrical The floor inside the house; the high-power mobile low-peak energy storage emergency power supply system includes a rectifier circuit, a three-phase electric detection circuit, a KM contactor, a switch Q, a DC output terminal, a diode D2, a bidirectional inverter/frequency converter, and a vanadium battery Low valley power energy storage system; when the main system power supply is normal, the main power switch Q21 and switch Q22 are closed, and the main power switch Q21 passes through the rectifier circuit, bidirectional inverter/frequency converter, KM4～KMn contactor and AC shunt output terminal in sequence connection; one path drives the contactor KM3 through a three-phase electrical detection circuit; the other connects to the vanadium battery low-valley energy storage system, and charges the vanadium battery stack under the control of the low-valley energy storage control system; the vanadium battery low-valley energy storage The energy system includes a vanadium battery stack, a fast charging and discharging unit, a vanadium battery voltage and temperature detection unit, and a low-valley energy storage control system; when the main system power supply suddenly loses power, under the control of the low-valley energy storage control system, the switch Q24 is closed, The three-phase electric detection circuit drives the contactor KM3 contact to be connected, and the electric vanadium battery is connected to the bidirectional inverter/inverter, KM4～KMn contactor and the AC shunt output terminal through the switch Q24, the contactor KM3 contact, and the diode D2 in turn. ; When DC output is required, under the control of the low-valley electric energy storage control system, the switch Q23 is closed at any time, and the electric vanadium battery is directly connected to the DC output terminal; the low-valley electric energy storage control system is connected with manual/automatic control at the same time.

The bidirectional inverter/frequency converter includes a voltage conversion circuit, an inverter, a filter and a bidirectional inverter control circuit, the input signal of the voltage conversion circuit is taken from the DC output of the control contacts QF21 and QF22 connected to the switching unit, When the contactor K is closed, the DC signal forms a pulsating square wave through the capacitor C1, the inductor L1 and the switch tube T7, and the inverter composed of the switch tubes T1, T2, T3, T4, T5, T6 and the capacitor C2 converts the DC signal into a three-phase alternating current, which is filtered by a filter composed of inductors L2, L3 and capacitor C3, and then output to the power switching unit through the output terminals QF31, QF32, and QF33.

The vanadium battery voltage and temperature detection unit includes MAX132A/D converter, 2.5V reference voltage source, DSP voltage temperature detection controller, DS18B20 battery temperature transmitter, network interface and memory, 2.5V reference power supply and MAX132A/D conversion The MAX132A/D converter is connected to the DSP voltage and temperature detection controller through the data bus DB1 and the address bus AB1; one end of the DSP voltage and temperature detection controller is connected to the network interface with the field bus function through the data bus DB ₂ and the address bus AB ₂ Connection, one end is connected to memory through data bus DB ₃ and address bus AB ₃ ; DS18B20 battery temperature transmitter is a one-line bus digital integrated temperature transmitter, connected with DSP voltage temperature detection controller; MAX132A/D converter detects vanadium battery The output voltage of the stack is input from the measured voltage terminal, and the MAX132A/D converter is provided with a high-precision, high-resolution reference voltage, 2.5V reference voltage, for analog-to-digital conversion.

Compared with the prior art, the beneficial effects of the utility model are:

1) This emergency power supply is a pre-installed emergency power supply house with energy storage for low valley electricity, which can output AC, variable frequency AC and DC power, and supports the vanadium battery energy storage device to keep some equipment running when the power supply of the main system suddenly stops. Power supply to ensure that some equipment on site can work safely within a certain period of time;

2) The vanadium battery energy storage device is used, which has a series of unique advantages such as large power, large capacity, high efficiency, low cost, long life, and environmental protection;

3) The use of vanadium batteries and low-peak energy storage can achieve significant energy savings and reduce operating costs;

4) This emergency power supply is an emergency power house with pre-installed mobile low-peak energy storage. It is pre-installed and debugged in the factory, and transported to the place of use by a large flatbed truck. It can be used after being connected to the main system power supply. It is suitable for emergency power supply of large-scale projects such as mines, railways, petroleum, natural gas and water conservancy;

5) The emergency power supply adopts an air-conditioned internal temperature control method, and the inside and outside of the house are fully sealed, which is suitable for working under harsh environmental conditions such as humidity, salt spray, and sandstorms.

Description of drawings

Fig. 1 is a side view of the external structure of the high-power mobile low-peak energy storage emergency power house.

Figure 2 is the internal structure diagram of the high-power mobile low-peak energy storage emergency power house.

Figure 3 is a system schematic diagram of a high-power mobile low-peak energy storage emergency power supply.

Figure 4 is the energy storage fast charge and discharge controller.

Figure 5 is a bidirectional inverter/frequency converter unit.

Fig. 6 is a vanadium battery voltage and temperature detection unit.

Fig. 7 is a system block diagram of a high-power mobile low-peak energy storage emergency power supply.

Fig. 8 is a block diagram of a low-valley electric energy storage control system.

In Figure 1 and 2: 1-Bracket module 2-Escalator handrail 3-External wall panel with insulation layer of electrical house 4-External heat pipe exchanger for air conditioner of power system module 5-Side door of power system module 6-Side door of power system module 7 -Platform armrest 8-Vadium battery positive electrolyte storage tank and pump (1) 9-Vanadium battery unit 10-Vadium battery negative electrolyte storage tank and pump (2) 11-Lighting lamp 12-Temperature detection inverter 13 -Inner heat exchanger of air conditioner 14-Smoke monitoring sensor 15-Humidity monitoring sensor 16-Charge and discharge controller 17-Low valley power storage control system 18-Bidirectional inverter/frequency converter 19-Power system switching and DC power output 20- Display 21 - Interior Floor of Electrical House

Detailed ways

The specific embodiment of the utility model is further described below in conjunction with accompanying drawing:

As shown in Figure 1, it is a high-power mobile low-valley energy storage emergency power house. The external structure of the power house includes a bracket mold 1, an escalator handrail 2, an outer wall panel with an insulation layer for the electrical house 3, and an external air conditioner for the power system module. Heat pipe exchanger 4, power system module side door rain strap 5, power system module side door 6, platform handrail 7; as shown in Figure 2, the internal structure of the power house includes a high-power mobile low-peak energy storage emergency power system and lighting lamps 11 , air-conditioning internal heat exchanger 13, smoke monitoring sensor 14, humidity monitoring sensor 15, electrical house internal floor 21; see Fig. 3, described high-power mobile low-valley electric energy storage emergency power supply system comprises rectification circuit, three-phase electric detection circuit , KM contactor, switch Q, DC output terminal, diode D2, bidirectional inverter/frequency converter, vanadium battery low-valley energy storage system; when the main system power supply is normal, the main power switch Q21 and switch Q22 are closed, and the main power switch Q21 One way is connected to the output end of the AC shunt through the rectifier circuit, bidirectional inverter/inverter, KM4~KMn contactors in turn; one way is connected to the contactor KM3 through the three-phase electric detection circuit; the other way is connected to the vanadium battery low-valley energy storage system. Under the control of the low valley power energy storage control system, the vanadium battery stack is charged for energy storage; the vanadium battery low valley power energy storage system includes a vanadium battery stack, a fast charge and discharge unit, a vanadium battery voltage and temperature detection unit, and a low valley power energy storage control system ; When the power supply of the main system is suddenly cut off, under the control of the low-valley electric energy storage control system, the switch Q24 is closed, the three-phase electric detection circuit drives the contactor KM3 to be connected, and the electric vanadium battery is contacted by the switch Q24 and the contactor KM3 in turn. point, diode D2 is connected to the bidirectional inverter/frequency converter, and KM4~KMn contactors are connected to the output end of the AC shunt; Directly connected to the DC output terminal; the low-valley electric energy storage control system is connected to manual/automatic control at the same time.

See Figure 3, QF1 is the input terminal of the fast charging and discharging unit. As shown in Fig. 4, the function of the fast charging and discharging unit is to rectify the three-phase alternating current of Q221 to Q223 connected by Q22 into direct current, and the direct current signal output by contacts QF11 and QF12 becomes a square wave to charge the vanadium battery stack, and the switching tube T8 , T9, capacitors C4, C5 and inductor L4 constitute a fast charging circuit, the fast charging and discharging unit is controlled by the charging and discharging controller, and the charging and discharging controller receives the control system of the low-valley electric energy storage through the field bus, and the low-valley electric energy storage Under the control of the control system, the fast charging and discharging unit can realize emergency power supply when the main power system suddenly fails, and can also periodically control and discharge the vanadium battery stack to improve the characteristics of the vanadium battery stack.

See Figure 3, QF2 is the input end of the bidirectional inverter/frequency converter, and QF3 is the output end of the bidirectional inverter/frequency converter. As shown in Figure 5, the bidirectional inverter/frequency converter includes a voltage conversion circuit, an inverter, a filter, and a bidirectional inverter control circuit. Output, when the contactor K is closed, the DC signal forms a pulsating square wave through the capacitor C1, the inductor L1 and the switch tube T7, and the inverter composed of the switch tubes T1, T2, T3, T4, T5, T6 and the capacitor C2 converts the DC The signal is converted into three-phase alternating current, filtered by a filter composed of inductors L2, L3 and capacitor C3, and then output to the power switching unit through output terminals QF31, QF32, and QF33.

As shown in Figure 6, the vanadium battery voltage and temperature detection unit includes MAX132A/D converter, 2.5V reference voltage source, DSP voltage temperature detection controller, DS18B20 battery temperature transmitter, network interface and memory, 2.5V reference power supply and MAX132A/ D converter connection, MAX132A/D converter is connected with DSP voltage temperature detection controller through data bus DB1 and address bus AB1; one end of DSP voltage temperature detection controller is connected with network interface with field bus function through data bus DB2 and address bus AB2 One end is connected to the memory through the data bus DB ₃ and the address bus AB ₃ ; the DS18B20 battery temperature transmitter is a one-line bus digital integrated temperature transmitter, which is connected with the DSP voltage temperature detection controller to measure the temperature of the vanadium battery stack; The MAX132A/D converter detects the output voltage of the vanadium battery stack, which is input from the measured voltage terminal. The MAX132A/D converter is equipped with a high-precision, high-resolution reference voltage and a 2.5V reference voltage for analog-to-digital conversion. . The DSP voltage temperature detection controller is also equipped with digital input and output and USB interface.

The vanadium battery stack is composed of a vanadium battery anode electrolyte liquid storage tank and a pump (1) 8, a vanadium battery unit 9, a vanadium battery negative electrode electrolyte liquid storage tank and a pump (2) 10.

The power system switching and DC power output 19 shown in Fig. 2 are the high-power mobile low-valley energy storage emergency power supply system consisting of switch Q, rectifier circuit, three-phase electric detection circuit, KM contactor and The connection circuit formed by the DC output terminal.

As shown in Figure 3 and Figure 7, the working principle of the vanadium battery low-valley energy storage emergency power supply is: when the main system power supply is normally supplied, the main system power supply passes through the main power switch Q21, rectified current, inverter/frequency converter, and contactor KM4 in sequence. ~KMn, finally connected to the output terminal to realize alternating current power supply with frequency change; one line is connected to the three-phase electric detection circuit; the other line is connected to the vanadium battery low-valley energy storage system through the switch Q22, and under the control of the low-valley energy storage control system, Charges the vanadium battery stack. When the main system power supply stops suddenly, the three-phase power detection circuit detects a sudden power failure. Under the control of the low-valley power storage control system, the three-phase power detection circuit drives the contactor KM3 to close, and the switch Q24 is turned on at the same time, and the low-valley power storage The control system sends instructions to the fast charging and discharging unit, and the vanadium battery stack starts to supply power and output DC power. The current is connected to the bidirectional inverter/frequency converter 18 with inverter function through the switch Q24, contactor KM3 contact, and diode D2. The contactors KM4~KMn flow to the output end of the AC shunt to realize the AC power supply with variable frequency. When DC power supply is required, under the control of the low-valley power storage control system, the switch Q23 is closed, and the vanadium battery stack directly outputs DC power.

As shown in Figure 8, the low-valley power storage control system includes a system computer, a display screen, an alarm unit, and a GPRS wireless communication module. The system computer is connected to the display screen, the alarm unit, and the GPRS wireless communication module respectively. The system computer is connected with charge and discharge controller, inverter/frequency converter, vanadium battery voltage detection unit, vanadium battery temperature detection unit, manual/automatic, vanadium battery pump control system and operation control through Profibus-DP and Modbus field bus respectively. The controller can be operated manually or automatically, and realizes wired and remote wireless control and monitoring through fieldbus and GPRS, and can also communicate with peripheral systems such as fire linkage systems.

Claims (3)

1. a high-power portable trough-electricity energy storage emergency power supply room, the external structure in described power supply room comprises rack module, the Side fascia of escalator handrail, electrically room band heat-insulation layer, the outside heat pipe exchanger of power system modules air-conditioning, power system modules side door rain are taken, power system modules side door, platform handrail; It is characterized in that, the internal structure in described power supply room comprises high-power portable trough-electricity energy storage emergency power system, illuminating lamp, air-conditioning inner heat exchanger, smoke monitoring transducer, humidity detection transducer, electrically room interior floor; Described high-power portable trough-electricity energy storage emergency power system comprises rectification circuit, three-phase electricity testing circuit, KM contactor, switch Q, DC output end, diode D2, two-way inversion/frequency converter, vanadium cell trough-electricity energy-storage system; When main system power normal power supply, main power switch Q21, switch Q22 are closed, and main power switch Q21 mono-tunnel is connected with interchange shunt output through rectification circuit, two-way inversion/frequency converter, KM4 ~ KMn contactor successively; One tunnel drives contactor KM3 through three-phase electricity testing circuit; Another road connects vanadium cell trough-electricity energy-storage system, to vanadium cell heap energy storage charging under the control of trough-electricity energy storage control system; Described vanadium cell trough-electricity energy-storage system comprises vanadium cell heap, fast charging and discharging unit, vanadium cell voltage and temperature detecting unit, trough-electricity energy storage control system; When the unexpected power-off of main system power, under the control of trough-electricity energy storage control system, switch Q24 closes, three-phase electricity testing circuit drives contactor KM3 contacting, and electric vanadium cell connects two-way inversion/frequency converter, KM4 ~ KMn contactor and exchanges output be along separate routes connected through switch Q24, contactor KM3 contact, diode D2 successively; When needs direct current exports, under the control of trough-electricity energy storage control system, switch Q23 closes at any time, and electric vanadium cell directly connects DC output end; Described trough-electricity energy storage control system connects manual/auto control simultaneously.

2. the high-power portable trough-electricity energy storage emergency power supply room of one according to claim 1, it is characterized in that, described two-way inversion/frequency converter comprises voltage conversion circuit, inverter, filter and two-way inverter control circuit, the input signal of voltage conversion circuit takes from the control contact QF21 of access switch unit, the direct current of QF22 exports, when contactor K closes, direct current signal is through electric capacity C1, inductance L 1 and switch transistor T 7 form pulsatory square-wave, by switch transistor T 1, T2, T3, T4, T5, direct current signal is changed into three-phase alternating current by the inverter that T6 and electric capacity C2 forms, by inductance L 2, through output QF31 after the filter filtering that L3 and electric capacity C3 forms, QF32, QF33 exports electricity consumption switch unit to.

3. the high-power portable trough-electricity energy storage emergency power supply room of one according to claim 1, it is characterized in that, described vanadium cell voltage and temperature detecting unit comprise MAX132A/D transducer, 2.5V reference voltage source, DSP voltage temperature detection control device, DS18B20 battery temperature transmitter, network interface and memory, 2.5V reference power supply is connected with MAX132A/D transducer, and MAX132A/D transducer is connected with DSP voltage temperature detection control device with address bus AB1 by data/address bus DB1; DSP voltage temperature detection control device one end is by data/address bus DB ₂with address bus AB ₂be connected with the network interface of band fieldbus function, one end is by data/address bus DB ₃with address bus AB ₃be connected with memory; DS18B20 battery temperature transmitter is one-wire bus digital integration temperature transmitter, is connected with DSP voltage temperature detection control device; MAX132A/D transducer detects the output voltage of vanadium cell heap, and inputted by tested voltage end, MAX132A/D transducer requires to be provided with high accuracy, high-resolution reference voltage, 2.5V reference voltage, for analog-to-digital conversion according to the rules.