CN102480164A - Hybrid energy power supply system and hybrid energy power supply method - Google Patents
Hybrid energy power supply system and hybrid energy power supply method Download PDFInfo
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Abstract
The invention discloses a hybrid energy power supply system and a hybrid energy power supply method. The hybrid energy power supply system comprises main energy power supply equipment, auxiliary energy power supply equipment, management equipment, energy storage equipment and load equipment, wherein the main energy power supply equipment is connected with a main communication interface of the management equipment; the auxiliary energy power supply equipment is connected with an auxiliary communication interface of the management equipment; the energy storage equipment is connected with an energy storage equipment communication interface of the management equipment; the management equipment is used for controlling the main energy power supply equipment to provide power for the energy storage equipment and the load equipment and controlling the auxiliary energy power supply equipment to provide power for the energy storage equipment and the load equipment when the main energy power supply equipment is abnormal or the output power is insufficient; and under the condition that electric quantity provided by the main energy power supply equipment and the auxiliary energy power supply equipment cannot meet the load equipment, the management equipment can be used for controlling the energy storage equipment to provide power for the load equipment. According to the hybrid energy power supply system and the hybrid energy power supply method disclosed by the invention, effects of flexibly networking, improving the reliability of a power supply system and reducing the operation and maintenance cost of the system are achieved.
Description
Technical field
The present invention relates to the power supply field, in particular to a kind of mixed energy power supply system and method.
Background technology
Present electric power system coverage is more and more wider, builds the early stage that causes supplying power with later maintenance comparatively difficult.With the communications field is example; The covering of communication network is more and more wide; The distribution of communication base station website also more and more disperses; In the rural area, mountain area or remote place, the powerup issue of base station equipment is to build early stage and a key issue of later maintenance, market is also more and more stronger to the demand of hybrid power supply.Traditional power supply plan comprises: kinds of schemes such as independently-powered, the oily machine of civil power is supplied power separately, the hybrid power supply of civil power fuel charger, the hybrid power supply of solar energy fuel charger.
Near the website that adopts civil power to supply power separately can be used mains-supplied; But some regional mains-supplied are unstable; Power failure that may be frequent, this causes frequent the discharging and recharging of battery easily, has a strong impact on the useful life of battery; And single mains-supplied scheme has reduced reliability of service.
Adopt the supply power mode of civil power fuel charger can avoid the frequent influence that has a power failure load and battery are caused of civil power; But; Still the generation of this situation of oil machine continuous operation in the time of can not avoiding civil power to have a power failure for a long time; Thereby increased fuel oil expense and oily machine maintenance cost, increased the operation and maintenance cost of website.In addition, oily machine is supplied power separately and there is such problem equally in the scheme of solar energy fuel charger hybrid power supply.
Be applied in the base station power supply environment as the solar energy of green clean energy resource is increasing; Adopt the solar energy website of power supply separately, under the bigger situation of load, need to be equipped with the solar energy pole plate and the jumbo battery pack of a greater number; Simultaneously in order to tackle continuous rainy weather; Need to be equipped with oily machine and generate electricity in support, these have all significantly increased the fixed cost of website, also need higher operation expense simultaneously.
Fig. 1 is the sketch map according to the electric power system of correlation technique, and in correlation technique, the type of energy device is fixed in the system, lays in management equipment through software mode.Can find out from traditional power supply plan; Except the problem of system reliability and operation expense; Also there is serious deficiency in traditional power supply plan aspect the system group network flexibility, kinds of schemes such as independently-powered, the oily machine of civil power is supplied power separately, the hybrid power supply of civil power fuel charger, the hybrid power supply of solar energy fuel charger need all independently that system supports separately, and what use in the system can Source Type be to have defined; Can not arbitrarily change, lack system compatibility.
Summary of the invention
Main purpose of the present invention is to provide a kind of energy mix power supply plan, to solve the not high problem of power supply plan flexibility in the above-mentioned correlation technique at least.
To achieve these goals; According to an aspect of the present invention, a kind of mixed energy power supply system is provided, this system comprises: main power supply energy equipment, auxiliary power supply energy device, management equipment, energy storage device and load equipment; Wherein, Main power supply energy equipment links to each other with the main communication interface of management equipment, and the auxiliary power supply energy device links to each other with the subsidiary communications interface of management equipment, and energy storage device links to each other with the energy storage device communication interface of management equipment; Management equipment, being used to control main power supply energy equipment is energy storage device and load equipment power supply, and when main power supply energy unit exception or power output deficiency, control auxiliary power supply energy device is energy storage device and load equipment power supply; And can not satisfy under the situation of load equipment at the electric weight that main power supply energy equipment and auxiliary power supply energy device provide, the control energy storage device is the load equipment power supply.
To achieve these goals; According to a further aspect in the invention; A kind of energy mix method of supplying power to is provided, and this method comprises: management equipment links to each other with main power supply energy equipment through its main communication interface, and management equipment links to each other with the auxiliary power supply energy device through its subsidiary communications interface; Energy storage device links to each other with the energy storage device communication interface of management equipment; Management equipment judges whether main power supply energy equipment is normal, if judged result is for being, then to control whole main power supply energy equipment be energy storage device and load equipment power supply to management equipment; If judged result is that management equipment does not judge whether auxiliary power supply is normal, if then management equipment is energy storage device and load equipment power supply according to the priority control auxiliary power supply energy device of auxiliary power supply; Otherwise the control energy storage device is the load equipment power supply.
Through the present invention; Be employed in the interface that is provided for connecting main power supply energy equipment and auxiliary power supply energy device on the management equipment,, solved the not high problem of power supply plan flexibility in the correlation technique with this mode of distinguishing main power supply energy equipment and auxiliary power supply energy device; And then reached the purpose that main power supply unit and auxiliary power supply can be set flexibly; To reach flexible networking, improve the reliability of electric power system, and reduce the effect of the operation expense of system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the electric power system of correlation technique;
Fig. 2 is the structured flowchart according to the mixed power supply system of the embodiment of the invention one;
Fig. 3 is the flow chart according to the hybrid power supply method of the embodiment of the invention one;
Fig. 4 is the sketch map according to the mixed energy power supply system of the embodiment of the invention two;
Fig. 5 is the flow chart according to the hybrid power supply method of the embodiment of the invention two;
Fig. 6 is the structural representation according to the mixed power supply system of the embodiment of the invention three.
Embodiment
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment one
The embodiment of the invention provides a kind of mixed energy power supply system; Fig. 2 is the structured flowchart according to the mixed power supply system of the embodiment of the invention one; As shown in Figure 2; This system comprises: main power supply energy equipment 210, auxiliary power supply energy device 220, management equipment 250, energy storage device 230 and load equipment 240, and wherein, main power supply energy equipment 210 links to each other with the main communication interface of management equipment 250; Auxiliary power supply energy device 220 links to each other with the subsidiary communications interface of management equipment 250, and energy storage device 230 links to each other with the energy storage device communication interface of management equipment 250; Management equipment 250; Be used to control main power supply energy equipment 210 and be energy storage device 230 and load equipment 240 power supplies; And at main power supply energy equipment 210 when unusual or power output is not enough, control auxiliary power supply energy device is energy storage device 230 and load equipment 240 power supplies; And the electric weight that provides at main power supply energy equipment 210 and auxiliary power supply energy device 220 can not satisfy under the situation of load equipment 240, and control energy storage device 230 be that load equipment 240 is supplied power.
In the present embodiment; Management equipment is provided with and is respectively applied for the communication interface that connects main power supply energy equipment and auxiliary power supply energy device; Can distinguish the mode of main power supply energy equipment and auxiliary power supply energy device with this; Like this, main power supply energy equipment and auxiliary power supply energy device can be set easily, this embodiment has effect flexibly.
Wherein, Interface in the main communication interface has different priority; Interface in the subsidiary communications interface has different priority; The interface and the priority of the interface in the subsidiary communications interface in the main communication interface of management equipment 250 control, and confirm the type (main power supply energy equipment and auxiliary power supply energy device) and the priority of power-supply device according to the interface of power-supply device access.
In a preferred embodiment of the embodiment of the invention; Auxiliary power supply energy device 220 can comprise multiple power-supply device; Wherein, this multiple power-supply device can comprise following one of at least: solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment, oily machine power supply unit, firepower power supply unit, waterpower power supply unit, nuclear energy power supply unit, underground heat power supply unit, morning and evening tides power supply unit.And auxiliary power supply energy device 220 can also report the kind of information of power supply unit and the work at present state of auxiliary power supply energy device 220 to management equipment 250.In this case; If management equipment 250 confirms that main power supply energy equipment 210 are unusual or power output is not enough, then can select power-supply device in the auxiliary power supply energy device 220 according to the priority selective sequential from high to low of power-supply device be energy storage device 230 and load equipment 240 power supplies.Through the priority of equipment in the auxiliary power supply energy device is set, can more flexible selection be provided with power supply unit.
Preferably, the main communication interface master's power supply energy equipment 210 and being connected of auxiliary power supply energy device 220 of management equipment 250 can comprise following dual mode, and the main communication interface of management equipment 250 does not insert main power supply energy equipment 210; Promptly; 220 power supplies of auxiliary power supply energy device are only arranged, and perhaps, the subsidiary communications interface of management equipment 250 does not insert auxiliary power supply energy device 220; That is, main power supply energy equipment 210 power supplies are only arranged.When the main communication interface of management equipment 250 did not insert main power supply energy equipment 210, management equipment 250 can be energy storage device 230 and load equipment 240 power supplies according to the power-supply device in the priority selective sequential auxiliary power supply energy device 220 from high to low of power-supply device; When the subsidiary communications interface of management equipment 250 did not insert auxiliary power supply energy device 220, management equipment 250 can be controlled all main power supply energy equipment 210 and be energy storage device 230 and load equipment 240 power supplies.Wherein, When the main communication interface of management equipment 250 does not insert main power supply energy equipment 210, if finding main power supply energy equipment 210, management equipment 250 inserts, promptly; The main communication interface of management equipment 250 inserts power supply unit, main power supply energy equipment 210 power supplies of then preferred use.
Preferably, management equipment 250 can also be adjusted main power supply energy equipment 210, auxiliary power supply energy device 220 or energy storage device 230 one of at least according to following information: the state information that the state information that the state information that main power supply energy equipment 210 reports, auxiliary power supply energy device 220 report, energy storage device 230 report, the uploaded state information of load equipment 240, external environmental information.
Wherein, energy storage device 230 can report its energy sign, and then, management equipment 250 is carried out different management according to the energy sign that energy storage device 230 reports to energy storage device 230.Energy storage device can be the power supply that storage battery or lithium battery etc. can stored energy source.
In another preferred embodiment of the embodiment of the invention; Management equipment 250 can also be through sending order to auxiliary power supply energy device 220 and automatic switching apparatus; Realize control, so that be energy storage device 230 and load equipment 240 power supplies to auxiliary power supply energy device 220.This embodiment realizes the control to the auxiliary power supply energy device through automatic switching apparatus, has practical advantage.
Preferably, main power supply energy equipment 210 also can be one of following various device or combination in any: solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment, oily machine power supply unit.Because main power supply energy equipment 210 can adopt the various energy resources type; For management equipment 250 can be managed it effectively, main power supply energy equipment 210 can also report following information one of at least to management equipment 250: the work at present state of the kind of information of power-supply device and main power supply energy equipment 210 in the main power supply energy equipment 210.
Preferably; Management equipment 250 surpasses when needing at the total power input of finding load equipment 240 and energy storage device 230; Judge whether auxiliary power supply energy device 220 is used for power supply; If then management equipment 250 reduces power output according to the power-supply device in the priority sequential control auxiliary power supply energy device 220 from low to high of power-supply device; If all power-supply devices that auxiliary power supply energy device 220 is not used in power supply or the auxiliary power supply energy device 220 all reduce power to zero, then management equipment 250 reduces power output according to the power-supply device in the priority sequential control auxiliary power supply energy device 220 from low to high of power-supply device.For example; When the gross output of management equipment 250 discovering devices surpasses needing of load equipment and energy storage device; Management equipment 250 reduces transmitting order to lower levels the power output (prerequisite is to have the auxiliary power supply energy device to insert) of the low auxiliary power supply energy device of priority level; If the auxiliary power supply energy device is all being closed the still overpower of having no progeny, management equipment will reduce the power output of the low main power supply energy equipment of priority level, up to the requirement of satisfying load and energy storage device.And, for the power output that reduces power supply in the present embodiment, should be one type of module in the power supply unit progressively turn-off or one type of power supply unit in module progressively reduce, turn-off up to whole type power supply unit.
In the another preferred embodiment of the embodiment of the invention; Main power supply energy equipment 210 or auxiliary power supply energy device 220 can also be when management equipment 250 break down or issue abnormal information; Get into secure operating mode; Use acquiescence output valve (for example, rated voltage or rated current) to energy storage device and load equipment power supply.This embodiment also can use main power supply energy equipment 210 or auxiliary power supply energy device 220 normal power supplies in management equipment 250 faults or when issuing abnormal information.
Preferably, the state of information that management equipment 250 can also report according to main power supply energy equipment 210 and energy storage device 230 and load equipment 240 is controlled the operating state of main power supply energy equipment 210.This embodiment can manage main power supply energy equipment 210 according to actual conditions effectively.
The embodiment of the invention also provides a kind of energy mix method of supplying power to, and this method can use said system to supply power, and Fig. 3 is that this method comprises according to the flow chart of the hybrid power supply method of the embodiment of the invention one:
Step S302, management equipment links to each other with main power supply energy equipment through its main communication interface, and management equipment links to each other with the auxiliary power supply energy device through its subsidiary communications interface;
Step S304, management equipment judges whether main power supply energy equipment is normal, if judged result is for being, then to control whole main power supply energy equipment be energy storage device and load equipment power supply to management equipment; If judged result is that management equipment does not judge whether auxiliary power supply is normal, if then management equipment is energy storage device and load equipment power supply according to the priority control auxiliary power supply energy device of said auxiliary power supply; Otherwise the control energy storage device is the load equipment power supply.
In the present embodiment; Management equipment is provided with and is respectively applied for the interface that connects main power supply energy equipment and auxiliary power supply energy device; Can distinguish the mode of main power supply energy equipment and auxiliary power supply energy device with this; Like this, main power supply energy equipment and auxiliary power supply energy device can be set easily, this embodiment has effect flexibly.
In a preferred embodiment of the embodiment of the invention; Management equipment control auxiliary power supply energy device is that energy storage device and load equipment power supply can adopt following mode to carry out: have a plurality of power-supply devices in the auxiliary power supply energy device; Then; Management equipment is selected the current available the highest power-supply device of priority in the auxiliary power supply energy device, is the power supply of energy storage device and load equipment.Through the priority of equipment in the auxiliary power supply energy device is set, can more flexible selection be provided with power supply unit.
Preferably; Management equipment at the total power input of finding load equipment and energy storage device when needing; Judge whether the auxiliary power supply energy device is used for power supply; If then management equipment reduces power output according to the power-supply device in the priority sequential control auxiliary power supply energy device from low to high of power-supply device; If all power-supply devices that the auxiliary power supply energy device is not used in power supply or the auxiliary power supply energy device all reduce power to zero, then management equipment reduces power output according to the power-supply device in the priority sequential control master power supply energy equipment from low to high of power-supply device.
Embodiment two
Present embodiment is the networking and the Managed Solution of a kind of intelligent energy mix power supply that proposes for the deficiency that overcomes existing energy mix power supply plan; This scheme has the function of priority level of kind and the power supply energy of the power supply energy that automatic identification inserts; Thereby improved flexibility and the reliability of mixed energy power supply system when networking, reduced user's operation expense.
Fig. 4 is the sketch map according to the mixed energy power supply system of the embodiment of the invention two, and is as shown in Figure 4, and this mixed energy power supply system comprises following several sections:
One, main power supply energy environment division.Main power supply energy equipment 210 mainly by main power supply energy equipment 211, main power supply energy equipment 212 ... main power supply energy equipment 21a forms, and wherein: main power supply energy equipment 210 can be that the mixing of one or more hybrid energy power supply equipments in the power supply units such as solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment or oily machine power supply unit is used.
The output of main power supply energy equipment 210 is connected on the DC master row 270 jointly, to realize the power supply to energy storage device 230 and load equipment 240.Main power supply energy equipment 210 has different priority control strategies, that is, the state of information that management equipment 250 can report according to main power supply energy equipment 210 and energy storage device 230 and load equipment 240 is controlled the operating state of main power supply energy equipment 210.
Can communicate between main power supply energy equipment 210 and the management equipment 250, particularly, can realize the exchange of information through communication bus 260 and management equipment 250.
Main power supply energy equipment 210 has unique variety of energy sources identification information; It reports this energy device kind of information through communication bus 260; That is, reporting main power supply energy equipment 210 is the information of one or more hybrid energy power supply equipments in the power supply units such as solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment or oily machine power supply unit.
Main power supply energy equipment 210 is realized under the control strategy of management equipment 250 simultaneously to energy storage device 230 and load equipment 240 power supplies.
Main power supply energy equipment 210 possesses ability of self-management; Promptly; Break down in management equipment 250 and can't communicate by letter or when issuing abnormal information, main power supply energy equipment 210 can get into its secure operating mode, to realize energy storage device 230 and load equipment 240 protections.
Main power supply energy equipment 210 possesses modularized design and hot plug function.Main power supply energy equipment 210 also has functions such as pressure regulation, current limliting, derate.
Two, auxiliary power supply energy device part.Auxiliary power supply energy device 220 mainly be by auxiliary power supply energy device 221, auxiliary power supply energy device 222 ... auxiliary power supply energy device 22b and automatic switching control equipment 280 are formed, and wherein: auxiliary power supply energy device 220 can be that the mixing of one or more hybrid energy power supply equipments in the power supply units such as solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment or oily machine power supply unit is used.
Auxiliary power supply energy device 220 has the power supply control strategy of priority, that is, auxiliary power supply energy device 220 under the control of management equipment 250 according to the actual requirements timesharing to the power supply of energy storage device 230 and load equipment 240.
The output of auxiliary power supply energy device 220 is connected on the automatic switching apparatus 280 jointly; One or more input energy device is connected on the DC master row 240 automatic switching apparatus 280 selecting wherein under the control of management equipment 250, to realize the power supply to energy storage device 230 and load equipment 240.
Auxiliary power supply energy device 220 can be communicated by letter with management equipment 250, particularly, can realize the exchange of information through communication bus 260 and management equipment 250.
Auxiliary power supply energy device 220 has unique variety of energy sources identification information; It reports the energy device kind of information through communication bus 260; That is, reporting auxiliary power supply energy device 220 is the information of one or more hybrid energy power supply equipments in the power supply units such as solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment or oily machine power supply unit.
Auxiliary power supply energy device 220 possesses ability of self-management; Promptly; Break down in management equipment 250 and can't communicate by letter or when issuing abnormal information, auxiliary power supply energy device 220 can get into its secure operating mode, to realize energy storage device 230 and load equipment 240 protections.
Auxiliary power supply energy device 220 possesses modularized design and hot plug function.Auxiliary power supply energy device 220 also has functions such as pressure regulation, current limliting, derate.
Three, communication bus part.Communication bus 260 provides the information exchanging channel between administrative unit 250 and main power supply energy equipment 210, auxiliary power supply energy device 220, energy storage device 230 and the automatic switching apparatus 280.
Communication bus 260 is made up of CAN bus, RS485 bus or in check switching signal.
Four, energy storage device.Energy storage device 230 is main to store the unnecessary energy of load equipment that main power supply energy equipment 210 or auxiliary power supply energy device 220 supply with 240, and when the energy that main power supply energy equipment 210 or auxiliary power supply energy device 220 provide can not satisfy the energy of load equipment 240, provides additional.Wherein: energy storage device 230 can be following one of at least: lead acid accumulator, Ni-MH battery, nickel-cadmium cell, lithium ion battery, poly-lithium battery, zinc and air cell, fuel cell.
Energy storage device 230 has unique variety of energy sources identification information, and it can report the energy storage device kind of information through energy storage device detection and management bus 290.
Five, management equipment part.Management equipment 250 mainly provides to external communication interface and according to the docking port feedack carries out different management and scheduling.Wherein: communication interface 251 managed devices 250 are defined as main power supply energy equipment interface; Promptly; As long as management equipment 250 detects communication interface 251 have input signal to exist and judge that signal is correct, simultaneously, the input of main power supply energy equipment 210 is satisfied requirement is set; Energy storage device 230, load equipment 240 are in proper working order, and one or more power supply energy equipment in the main power supply energy equipment 210 that management equipment 250 just will insert insert to energy storage device 230 and load equipment 240 power supplies simultaneously.Communication interface 251 has Different control priority, and management equipment 250 will be controlled and manage according to different main power supply energy equipment 210 priority levels.
Communication interface 252 managed devices 250 are defined as auxiliary power supply energy device interface; Promptly; The input signal existence is arranged and judge that signal is correct as long as management equipment 250 detects communication interface 252; Simultaneously, main power supply energy equipment 210 unusually or power output does not satisfy the requirement of load equipment 240 and the capacity of energy storage device 230 is lower than set point, and management equipment 250 just will be to automatic switching apparatus 280 transmitting order to lower levels; A group of access that auxiliary power supply energy device 220 medium priorities are not high is to DC master row 240, thereby completion is to the power supply of energy storage device 230 and load equipment 240.
Communication interface 253 is main to receive the information that energy storage devices 230 report, and this information comprises: information such as the kind of energy storage device 230, operating state and issue relevant control command.
The information exchange of communication interface 254 main completion and automatic switching apparatus 280; Comprise the access control order that management equipment 250 issues according to main power supply energy equipment 210 and energy storage device 230 and 240 pairs of auxiliary power supply energy devices 220 of load equipment, and auxiliary power supply energy device 220 state information of reporting for management equipment 250.
Communication interface 255 provides the interface of communicating by letter with host computer.
In addition, management equipment 250 also provides different main power supply energy equipment 210 and auxiliary power supply energy device 220 and energy storage device 230, scheduling and the management method of load equipment 240 under various combination.
Six, DC master row.The power transfer that DC master row 270 main realizations produce main power supply energy equipment 210 or auxiliary power supply energy device 220 is given energy storage device 230 and load equipment 240 and energy storage device 230 provides for load equipment 240 when main power supply energy equipment 210 or auxiliary power supply energy device 220 energy shortages energy-transmission channel.
Eight, load equipment.Load equipment 240 can be 48V or 24V dc suppling equipment, also can be a DC-AC (DC-AC) equipment.
Fig. 5 is the flow chart according to the hybrid power supply method of the embodiment of the invention two, and is as shown in Figure 5, uses the equipment in the present embodiment, can adopt following step to supply power:
Step S510: beginning.
Step S520: management equipment 250 initialization; Management equipment 250 begins that data sampling, condition monitoring and alarm are carried out in the input of the communication interface 253 of the communication interface 251 that connects main power supply energy equipment 210, the communication interface 252 that connects auxiliary power supply energy device 220 and connection energy storage device 230 to be judged, to judge major-minor relation, priority relationship and the device type etc. between input equipment.
Step S530: management equipment 250 detects the operating state of energy storage device 230 and load equipment 240; Wherein, Operating state comprises: information such as operating voltage, operating current, energy storage device residual capacity and ambient temperature, so that confirm the hypervisor that the operating state of main power supply energy equipment 210 or auxiliary power supply energy device 220 is relevant with scheduling.Management equipment 250 judges whether energy storage device 230 and load equipment 240 be normal, if, then carry out step S540, otherwise, return step S530, proceed detection signal.
Step S540: judge whether main power supply energy equipment 210 is normal, if, then carry out step S550, otherwise, carry out step S560.
Step S550: if it is normal and energy storage device 230 is in proper working order with load equipment 240 to have detected main power supply energy equipment 210; The main power supply energy equipment 210 that then inserts all starts, and control load equipment 240 is power-up state, and inserts energy storage device 230; The default magnitude of voltage of main power supply energy equipment 210 outputs; System starts working, and carries out the management of load equipment 240 and energy storage device 230 simultaneously, calculates the voltage-target of DC master row 270 according to the charged state of energy storage device.
Step S560: judge whether auxiliary power supply energy device 220 is normal, if, then carry out step S550, otherwise, step S530 returned.
After main power supply energy equipment 210 all inserts; The information that management equipment 250 reports through the continuous poll master power supply energy equipment 210 of communication interface 251 and energy storage device 230 and load equipment 240; When the power output of main power supply energy equipment 210 surpasses needing of energy storage device 230 and load equipment 240; Management equipment 250 will be carried out current limliting with the low equipment of main power supply energy equipment 210 medium priorities according to predefined scheduler program and handled; As, turn down the output voltage of module or turn-off module step by step; When the power output of main power supply energy equipment 210 does not reach voltage or the value that capacity is lower than a certain setting of a certain limit value and energy storage device 230 of energy storage device 230 and load equipment 240 gross powers; Management equipment 250 will insert through automatic switching apparatus 280 according to the predefined scheduler program equipment that auxiliary power supply energy device 220 medium priorities are high and give energy storage device 230 and load equipment 240 power supplies; Insert in the process of giving energy storage device 230 and load equipment 240 power supplies at auxiliary power supply energy device 220; When the power output that detects main power supply energy equipment 210 when management equipment 250 reaches the minimum requirements of predefined energy storage device 230 and load equipment 240; And the voltage of energy storage device 230 or capacity reach a certain set point; Auxiliary power supply energy device 220 withdraws from the height of priority from power supply step by step, finally by main power supply energy equipment 210 power supplies.
If it is unusual to detect supreme breath or the information of notifying of communication interface 251; Promptly; Main power supply energy equipment 210 is unusual, and auxiliary power supply energy device 220 is in proper working order and energy storage device 230 is in proper working order with load equipment 240, and then the auxiliary power supply energy device 220 with high priority inserts and give energy storage device 230 and load equipment 240 power supplies; The default magnitude of voltage of auxiliary power supply energy device 220 outputs; System starts working, and carries out the management of load equipment 240 and energy storage device 230 simultaneously, calculates the voltage-target of DC master row 270 according to the charged state of battery; If the power output of the auxiliary power supply energy device 220 of high priority can not satisfy a certain limit value of energy storage device 230 and load equipment 240 power requirements and the power supply or the capacity of energy storage device 230 is lower than set point; Inferior priority auxiliary power supply energy device 220 will insert power supply automatically, by that analogy.When detecting main power supply energy equipment 210 inputs, high priority or inferior priority auxiliary power supply energy device 220 management equipment 250 in power supply process meet the demands; Management equipment 250 will be managed it and inserted power supply, confirm the input and the shutoff of high priority or inferior priority auxiliary power supply energy device 220 simultaneously according to the conditions such as capacity of the requirements of its power output and energy storage device 230 and load equipment 240 and energy storage device 230.
Management equipment 250 is handled communication buses 260 and is detected and manage 290 message that report with energy storage device.Wherein, communication bus 260 can adopt industry to go up general RS485 or CAN communication bus etc.
In the present embodiment; Mixed energy power supply system is supported the energy input of various ways; Through to the energy device of input through main power supply energy equipment with the auxiliary power supply energy device is distinguished and every type of energy device is carried out priority control; Realize the flexible networking of mixed energy power supply system, improve the reliability of electric power system, and reduce the operation expense of system.And; Present embodiment also adopts the control strategy with major-minor relation and priority to manage the various forms of energy; Preferentially also utilize main power supply energy to greatest extent; When main power supply energy equipment provides power can not satisfy load and energy storage device requirement, adopt the auxiliary power supply energy device of high priority to replenish not enough energy.When the auxiliary power supply energy device power output of high priority does not meet the demands; When reaching the auxiliary power supply energy device entry condition of time priority; Start the auxiliary power supply energy device of time priority, and rise to a threshold value and keep setting-up time, or the power output of main power supply energy equipment satisfies and stops the auxiliary power supply energy device when load and energy storage device require the power of demand at DC master row voltage; To reduce auxiliary power supply energy device frequency and time, reduce the wastage.
In the present embodiment; Through adopting priority scheduling; Can be from power supply resource and the operation expense and the system reliability of reality; Select different management methods, reduce the power supply energy equipment that uses the high maintenance cost to greatest extent, improve system effectiveness and the operation expense that reduces system to reach.And present embodiment can the back-up system flexible configuration.The energy mix system supports the energy input of various ways; Carry out the flexible networking of main power supply energy equipment and auxiliary power supply energy device differentiation realization mixed energy power supply system through energy device to input; Adapt to more kinds of application scenarioss, improve the flexibility and the reliability of power supply.
Embodiment three
Present embodiment is that example is explained the implementation procedure of the embodiment of the invention with solar energy, oily machine and civil power mixed power supply system commonly used in the communication system.
Fig. 6 is the structural representation according to the mixed power supply system of the embodiment of the invention three; As shown in Figure 6; This system is made up of auxiliary power supply part 410 and main power pack 420, and auxiliary power supply part 410 mainly comprises civil power 418, diesel engine generator 419, automatic switching control equipment 414 and rectifier group 416, wherein; Civil power 418 is a high priority, and diesel engine generator 419 is a low priority.Main power pack 420 comprises photovoltaic array 422, power conversion unit 421 etc.Monitoring management unit 430 interconnects with RS485 bus 431 with auxiliary power supply part 410 and main power pack 420, and wherein, main communication interface 434 is communicated by letter with main power pack 420, and subsidiary communications interface 435 is communicated by letter with auxiliary power supply part 410.Load and battery management are responsible in monitoring management unit 430.
This system can adopt following method to supply power:
Step 1: confirm that at first system supplymentary power supply unit 410 is an AC/DC rectifier 416, main power supply unit 420 is DC/DC solar power unit 421, and energy storage device 495,496 is information such as lead acid accumulator and electric current and voltage.
Step 2: accomplish being connected of system power distribution and communication cable according to accompanying drawing 6; Wherein, Connection 431 adopts the RS485 bus; This bus is used extensively, and the longest communication distance, maximum communication speed and anti-interference all meet the demands, and is easy on original website basis, transform and upgrading implementing.
Step 3: system powers on, DC/DC solar power unit 421 output default voltage, and the control battery charge also powers on load.
Step 4: the sampling and the alarm of management equipment 430 beginning DC/DC solar power unit 421 power packs are judged, carry out battery management and load management simultaneously, and calculate the whole system VD according to battery charging state.
Step 5: the power output of 430 pairs of DC/DC solar power of management equipment unit 421 and load equipment 484,485, the electric current and voltage of energy storage device 495,496 is sampled and is judged, to judge energy storage device 495,496 whether overcurrent, situation such as under-voltage is arranged.
Step 6: the power output when DC/DC solar power unit 421 surpasses load equipment 484,485; During the rated power of energy storage device 495,496; DC/DC solar power unit 421 will reduce power output through reducing output voltage; If the power output of DC/DC solar power unit 421 surpasses load equipment 484,485, the demand power of energy storage device 495,496, then management equipment 430 is closed DC/DC solar power unit 421 with protection load and storage battery with transmitting order to lower levels;
Step 7: if the output current of DC/DC solar power unit 421 is less than a threshold value; Or DC master row 470 voltages drop to certain limit value; Or battery capacity is when dropping to certain limit value, and then civil power 418 is opened rectifier 416 one by one, by civil power 418 institute of part system energy requirement is provided.If the voltage of DC master row 470 rises to a threshold value and then keeps the rectifier unit quantity that Alternating Current Power Supply partially opens.
Step 8: generator management.After civil power 418 had a power failure, system was by solar energy system 420 power supplies, if when solar irradiation deficiency or time are evening; System is by battery 495,496 power supply, and when cell voltage dropped to a threshold value or battery capacity and drops to a threshold value, management equipment 430 was through the closed monitoring of output dry contact control switch 412; Therefore civil power does not have electricity the time, and the closed generator control switch 413 of automatic switching control equipment 414 is at switch 412 and 413 all under the situation of closure; Generator 418 starts, and supplies power to system through rectifier group 416, when DC master row voltage rises to a certain degree; After keeping certain hour; Or the running time of generator surpass to set longest run time the time, management equipment 430 is closed monitoring control switch 412, generator quits work.Perhaps behind civil power 440 incoming calls, automatic switching control equipment is closed generator control switch 413, and generator quits work.
Step 9: load and battery management.After civil power 418 had a power failure, Alternating Current Power Supply part 410 was by generator 419 power supplies, if generator is because fuel oil exhausts or fault and stopping, this moment, system was by solar electric power supply system 420 power supplies; If more weak or of solar irradiation, photovoltaic array 422 generated energies are not enough the time in the evening, and system is battery-powered, and DC master row voltage descends; When DC master row voltage dropped to a threshold value, management equipment 430 control load circuit breakers 482 broke off, and cut off the less important load of one-level; With the mitigation system load, when DC master row voltage continued to drop to a threshold value, management equipment 430 control load circuit breakers 483 broke off; Cut off another road load,, prevent the battery deep discharge with the protection battery.When solar irradiation stronger, or civil power incoming call, oil start, operation just often, system's powering load, and charging the battery, when busbar voltage was higher than certain limit value, load restoration powered on.
Step 10: system gets back to step 4 and carries out, and manages the subsystem of respectively supplying power according to the power supply priority level in real time, and carries out battery management, load management and alarming processing etc.
In sum; The embodiment of the invention is employed in the interface that is provided for connecting main power supply energy equipment and auxiliary power supply energy device on the management equipment; With this mode of distinguishing main power supply energy equipment and auxiliary power supply energy device, reached the effect that main power supply unit and auxiliary power supply are set flexibly.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, and in some cases, can carry out step shown or that describe with the order that is different from here by calculation element; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a mixed energy power supply system is characterized in that, comprising: main power supply energy equipment, auxiliary power supply energy device, management equipment, energy storage device and load equipment, wherein,
Said main power supply energy equipment links to each other with the main communication interface of said management equipment, and said auxiliary power supply energy device links to each other with the subsidiary communications interface of said management equipment, and said energy storage device links to each other with the energy storage device communication interface of said management equipment;
Said management equipment; Being used to control said main power supply energy equipment is said energy storage device and the power supply of said load equipment; And when said main power supply energy unit exception or power output deficiency, controlling said auxiliary power supply energy device is said energy storage device and the power supply of said load equipment; And can not satisfy under the situation of said load equipment at the electric weight that said main power supply energy equipment and said auxiliary power supply energy device provide, controlling said energy storage device is said load equipment power supply.
2. system according to claim 1 is characterized in that,
Interface in the said main communication interface has different priority, and the interface in the said subsidiary communications interface has different priority, and said management equipment is controlled interface and the priority of the interface in the said subsidiary communications interface in the said main communication interface.
3. system according to claim 1 is characterized in that,
Said auxiliary power supply energy device has multiple power-supply device;
Said management equipment is said energy storage device and the power supply of said load equipment according to the power-supply device in the said auxiliary power supply energy device of priority selective sequential from high to low of power-supply device when said main power supply energy unit exception or power output deficiency.
4. system according to claim 3; It is characterized in that, said multiple power-supply device comprise following one of at least: solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment, oily machine power supply unit, firepower power supply unit, waterpower power supply unit, nuclear energy power supply unit, underground heat power supply unit, morning and evening tides power supply unit.
5. system according to claim 4 is characterized in that, said auxiliary power supply energy device also is used for reporting the kind of information of power supply unit and the work at present state of said auxiliary power supply energy device to said management equipment.
6. system according to claim 1; It is characterized in that; Said management equipment comprises with being connected of said auxiliary power supply energy device with said main power supply energy equipment: the main communication interface of said management equipment does not insert said main power supply energy equipment, and perhaps the subsidiary communications interface of said management equipment does not insert said auxiliary power supply energy device.
7. system according to claim 6 is characterized in that,
When the main communication interface of said management equipment does not insert said main power supply energy equipment; The power-supply device that said management equipment also is used for according to the said auxiliary power supply energy device of priority selective sequential from high to low of power-supply device is said energy storage device and the power supply of said load equipment; When said management equipment found that said main power supply energy equipment inserts, said management equipment was controlled said main power supply energy equipment and is supplied power;
When the subsidiary communications interface of said management equipment did not insert said auxiliary power supply energy device, it was said energy storage device and the power supply of said load equipment that said management equipment also is used to control all said main power supply energy equipment.
8. system according to claim 1; It is characterized in that said management equipment also is used for one of at least said main power supply energy equipment, said auxiliary power supply energy device or said energy storage device being adjusted according to following information: the state information that the state information that said main power supply energy equipment reports, said auxiliary power supply energy device report, the state information that said energy storage device reports, the uploaded state information of said load equipment, external environmental information.
9. system according to claim 8 is characterized in that, said energy storage device also is used to report energy sign, and said management equipment is carried out different management according to the said energy sign that said energy storage device reports to said energy storage device.
10. system according to claim 1; It is characterized in that, said main power supply energy equipment comprise following one of at least: solar power supply unit, wind energy power supply unit, fuel cell-powered equipment, mains-supplied equipment, oily machine power supply unit, firepower power supply unit, waterpower power supply unit, nuclear energy power supply unit, underground heat power supply unit, morning and evening tides power supply unit.
11. system according to claim 10; It is characterized in that said main power supply energy equipment also is used for reporting following information one of at least to said management equipment: the kind of information of said main power supply energy equipment power-supply device, the work at present state of said main power supply energy equipment.
12. system according to claim 1 is characterized in that,
Said management equipment also is used for surpassing when needing at the total power input of finding said load equipment and said energy storage device; Judge whether said auxiliary power supply energy device is used for power supply; If then said management equipment reduces power output according to the power-supply device in the said auxiliary power supply energy device of priority sequential control from low to high of power-supply device; If all power-supply devices that said auxiliary power supply energy device is not used in power supply or the said auxiliary power supply energy device all reduce power to zero, then said management equipment reduces power output according to the power-supply device in the said main power supply energy equipment of the priority sequential control from low to high of power-supply device.
13. system according to claim 1; It is characterized in that; Said main power supply energy equipment or said auxiliary power supply energy device also are used for when said management equipment breaks down or issues abnormal information, use the acquiescence output valve to said energy storage device and the power supply of said load equipment.
14. an energy mix method of supplying power to is characterized in that, comprising:
Management equipment links to each other with main power supply energy equipment through its main communication interface, and said management equipment links to each other with the auxiliary power supply energy device through its subsidiary communications interface; Said energy storage device links to each other with the energy storage device communication interface of said management equipment;
Said management equipment judges whether said main power supply energy equipment is normal, if judged result is for being, then said management equipment control all said main power supply energy equipment is that energy storage device is supplied power with load equipment; If judged result is for denying; Said management equipment judges whether said auxiliary power supply is normal; If it is said energy storage device and the power supply of said load equipment that then said management equipment is controlled said auxiliary power supply energy device according to the priority of said auxiliary power supply; Otherwise controlling said energy storage device is said load equipment power supply.
15. method according to claim 14 is characterized in that, it is said energy storage device and the power supply of said load equipment that said management equipment is controlled said auxiliary power supply energy device, comprising:
Said auxiliary power supply energy device has a plurality of power-supply devices;
It is said energy storage device and the power supply of said load equipment that said management equipment is controlled in the said auxiliary power supply energy device the current available the highest power-supply device of priority.
16. method according to claim 14 is characterized in that,
Said management equipment surpasses when needing at the total power input of finding said load equipment and said energy storage device; Judge whether said auxiliary power supply energy device is used for power supply; If then said management equipment reduces power output according to the power-supply device in the said auxiliary power supply energy device of priority sequential control from low to high of power-supply device; If all power-supply devices that said auxiliary power supply energy device is not used in power supply or the said auxiliary power supply energy device all reduce power to zero, then said management equipment reduces power output according to the power-supply device in the said main power supply energy equipment of the priority sequential control from low to high of power-supply device.
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| CN118054548A (en) * | 2024-03-20 | 2024-05-17 | 苏州千澄新能源科技有限公司 | Energy flow control method and system supporting auxiliary power supply intervention |
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Application publication date: 20120530 |