CN204046186U - A kind of composite energy storage power station for active distribution network - Google Patents
A kind of composite energy storage power station for active distribution network Download PDFInfo
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- CN204046186U CN204046186U CN201320757013.4U CN201320757013U CN204046186U CN 204046186 U CN204046186 U CN 204046186U CN 201320757013 U CN201320757013 U CN 201320757013U CN 204046186 U CN204046186 U CN 204046186U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 204
- 239000002131 composite material Substances 0.000 title claims abstract description 81
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 229910052744 lithium Inorganic materials 0.000 claims description 11
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 239000005955 Ferric phosphate Substances 0.000 claims description 5
- 229940032958 ferric phosphate Drugs 0.000 claims description 5
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 5
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 238000004378 air conditioning Methods 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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Abstract
The utility model provides a kind of composite energy storage power station for active distribution network, is provided with energy type energy-storage system, balanced type energy-storage system, power-type energy-storage system, two-way inverter, composite energy storage coordinated control system in power station.Dissimilar energy-storage system is connected with corresponding two-way inverter separately.Composite energy storage coordinated control system controls the co-ordination that two-way inverter carries out different energy-storage system.Composite energy storage coordinated control system collects all system informations, and controls power station operation.This composite energy storage power station can receive the unnecessary electricity of the distributed energy in active distribution network to each energy-storage system charging, or the load that will the electric energy of each energy-storage system supply active distribution network needs.Composite energy storage power station of the present utility model can realize the fast response characteristic of active distribution network, and realizes supporting to greatest extent to energy consumption, has the advantage that efficiency is high, grid adaptability is strong, fail safe is high.
Description
Technical field
The utility model relates to the energy-accumulating power station in network system, and particularly relates to a kind of composite energy storage power station for active distribution network.
Background technology
Along with the sustainable growth of economy and the increasingly serious of weather variation issue, greatly developing new forms of energy has become China's energy strategy adjustment, has changed the important content of electric power development mode.Sustainability is the foundation characteristic of following electrical network, active distribution network possesses the distribution network that combination controls various distributed energy (distributed power source, controllable burden, energy storage, dsm etc.) ability, its objective is strengthen power distribution network for regenerative resource receiving ability, promote the utilance of power distribution network assets, delay the upgrading investment of power distribution network, and improve power quality and the power supply reliability of user.
Active distribution network carries out transfer and the allotment of energy by energy-accumulating power station, so according to the requirement of load, the characteristic of system and the technical performance of pursuit and the difference of economic index, require the dynamic change of energy-storage system both responding system, the also demand of corresponding Load Regulation (peak regulation), Emergency Power.At this moment multiple energy storage technology will be adopted.Multiple elements design energy storage is exactly to have the energy-storage system of fast response characteristic and to have energy-storage system conbined usage, the cooperation control of Large Copacity energy storage characteristic, thus plays the performance of energy storage technology to greatest extent.
Utility model content
The purpose of this utility model is to provide a kind of composite energy storage power station for active distribution network, by energy type energy-storage system, power-type energy-storage system and balanced type energy-storage system conbined usage, solving in active distribution network can independently cooperation control intermittent new energy and energy storage device distributed power subsystem, and regenerative resource of actively dissolving also guarantees the effect of the safety and economic operation of network.
In order to achieve the above object, the technical solution of the utility model is to provide a kind of composite energy storage power station for active distribution network, this composite energy storage power station comprises: composite energy storage coordinated control system, two-way inverter, and three class energy-storage systems: energy type energy-storage system, power-type energy-storage system, take into account type energy-storage system;
Described two-way inverter is provided with three classes according to the difference of energy-storage system type and watt level; The two-way inverter of this three class is corresponding with the three class energy-storage systems matched respectively to be connected;
Described composite energy storage coordinated control system, by connecting the two-way inverter of active distribution network, three class energy-storage systems and correspondence thereof respectively, is monitored the real-time status of each equipment in described active distribution network and power station and controls these equipment and complete respective work:
Described composite energy storage coordinated control system is by controlling corresponding two-way inverter, be used for charging to three class energy-storage systems by from the electric energy of distributed energy in described active distribution network, and the electric energy of three class energy-storage systems is input to active distribution network, as requested with balancing power network load.
Preferably, comprise transformer further in described composite energy storage power station, the high-tension electricity from described active distribution network is converted to low tension, and this low tension is supplied to described two-way inverter to be the charging of corresponding energy-storage system; Low tension from described two-way inverter is also converted to the corresponding high-tension electricity of described active distribution network by described transformer, and is transported in active distribution network by this high-tension electricity.
Preferably, in described composite energy storage power station, comprise AC power distribution cabinet/AC distribution panel further, wherein collect the two-way inverter ac bus of three classes; Described composite energy storage coordinated control system and described AC power distribution cabinet/AC distribution panel communication, to control the switch of three class energy-storage systems by the circuit breaker arranged in described AC power distribution cabinet/AC distribution panel.
Preferably, described composite energy storage power station comprises temperature control system further, its described composite energy storage coordinated control system monitoring be attached thereto and control; Be provided with industrial air-conditioning and control system thereof in described temperature control system, ensure that the temperature of this composite energy storage power station and wherein each energy-storage system all remains in suitable interval.
Preferably, described composite energy storage power station comprises safety-protection system further, its described composite energy storage coordinated control system monitoring be attached thereto and control; Automatic fire extinguisher, transducer, alarm is provided with in described safety-protection system, and the control system of these devices.
Preferably, the energy storage kind in described energy type energy-storage system is lead-acid battery, flow battery or energy storage of drawing water, and ensures the lasting stable state electricity consumption in active distribution network;
Energy storage kind in described power-type energy-storage system is lithium titanate battery, ultracapacitor energy storage or flywheel energy storage, ensures the surge of high magnification in short-term in active distribution network;
The described energy storage kind taken into account in type energy storage is ferric phosphate lithium cell, plumbous carbon battery or compressed-air energy storage, takes into account long-time steady operation and high magnification surge in short-term, the limit output of containing energy type energy-storage system and power-type energy-storage system.
In a preferred embodiment, in described composite energy storage power station, described energy type energy-storage system is made up of lead-acid battery, and described power-type energy-storage system is made up of lithium titanate battery, described in take into account type energy-storage system and be made up of ferric phosphate lithium cell.
For the composite energy storage power station of active distribution network in the utility model, comprise: composite energy storage coordinated control system, it to be connected with Ethernet respectively by RS485 monitors and controls: the work of the equipment such as energy type energy-storage system, balanced type energy-storage system, power-type energy-storage system, two-way inverter, safety-protection system, temperature control system.Dissimilar energy-storage system is connected with corresponding two-way inverter separately.Composite energy storage coordinated control system controls the co-ordination that two-way inverter carries out different energy-storage system.Composite energy storage coordinated control system collects all system informations, and controls power station operation.Safety-protection system ensures the safe operation in power station, and temperature control system provides good ambient temperature to power station.This composite energy storage power station can receive the unnecessary electricity of the distributed energy in active distribution network to charge to energy-storage system, or the load that will the electric energy of energy-storage system supply active distribution network needs.
The composite energy storage power station provided by utilizing the utility model and distribution method thereof, can realize the fast response characteristic of active distribution network, and realize supporting to greatest extent to energy consumption.The composite energy storage power station that the utility model provides has that efficiency is high, grid adaptability is strong, the advantage of high security.
Accompanying drawing explanation
Fig. 1 is the structural representation in the composite energy storage power station that the utility model provides;
Fig. 2 is the control schematic diagram in the composite energy storage power station that the utility model provides;
Fig. 3 is the structural representation in the composite energy storage power station of a kind of execution mode of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is further described.
As shown in Figure 1, the composite battery energy-accumulating power station for active distribution network that the utility model provides comprises energy type energy-storage system 1, power-type energy-storage system 2, takes into account type energy-storage system 3, two-way inverter 4, transformer 5, composite energy storage coordinated control system 6, temperature control system 7, safety-protection system 8, active distribution network 9 and is connected to the distributed energy 10 of active distribution network side.Wherein, energy type energy-storage system 1, power-type energy-storage system 2 and take into account type energy-storage system 3 and be connected with the two-way inverter 4 of corresponding watt level respectively; The two-way inverter 4 of three kinds of energy-storage systems is by AC power distribution cabinet/AC distribution panel access 400V bus, and transformer 5 realizes the voltage transitions between 400V bus and 10KV or 35KV active distribution network 9.
Described distributed energy 10 is made up of multiple user side distributed generation systems such as wind power generation, solar power generation, gas turbine power generations, while satisfied local loading demand, unnecessary electric energy is fed in active distribution network 9, composite energy storage coordinated control system can control the distributed energy 10 received in active distribution network 9 automatically, and electric energy is supplied the load that active distribution network 9 needs.
Energy storage kind in described energy type energy-storage system 1 can be lead-acid battery, flow battery, energy storage etc. of drawing water, and can ensure the lasting stable state electricity consumption in active distribution network 9.Energy storage kind in described power-type energy-storage system 2 can be lithium titanate battery, ultracapacitor energy storage, flywheel energy storage etc., can ensure the surge of high magnification in short-term in active distribution network 9.And described in the energy storage kind taken into account in type energy storage 3 can be ferric phosphate lithium cell, plumbous carbon battery, compressed-air energy storage etc., long-time steady operation and high magnification surge in short-term can be taken into account, the limit output of containing energy type energy-storage system 1 and power-type energy-storage system 2.Ensure the stable operation of active distribution network 9.
Described temperature control system 7 is made up of industrial air-conditioning and control system, can ensure that the temperature in composite energy storage power station is in suitable interval, ensures that overheated danger does not occur the energy-storage system in power station.Such as, composite energy storage power station room temperature is made to remain within the scope of 25 DEG C ~ 30 DEG C.Described safety-protection system 8 is made up of automatic fire extinguisher, transducer, alarm, control system etc., can prevent the danger such as power station is on fire, blast.
As shown in Figure 2, composite energy storage coordinated control system 6 is the central controllers in composite energy storage power station, gathers monitoring power station data and controls each component working.The relevant real time information of active distribution network 9 passes to composite energy storage coordinated control system 6 by Ethernet, and composite energy storage coordinated control system 6, according to the real-time requirement of active distribution network 9, is carried out energy storage and followed the tracks of output calculation.
Energy type energy-storage system 1, power-type energy-storage system 2 and the state information taking into account type energy-storage system 3 pass to corresponding two-way inverter 4 and composite energy storage coordinated control system 6 by RS485 agreement.Two-way inverter 4 controls energy-storage system operating power and service time by RS485 communications protocol.Composite energy storage coordinated control system 6 calculates the demand of active distribution network to energy-storage system, meets active distribution network demand by control AC power distribution cabinet/AC distribution panel 11 and three kind of two-way inverter 4.
Described AC power distribution cabinet/AC distribution panel 11 collects two-way inverter 4 ac bus of three types, and composite energy storage coordinated control system 6 and AC power distribution cabinet/AC distribution panel 11 communication, by the switch of the three types energy-storage system of breaker control.
Composite energy storage coordinated control system 6 is by RS485 protocol integrated test system temperature control system 7 and safety-protection system 8.Make temperature control system 7 and safety-protection system 8 corresponding actions by the state of Real-Time Monitoring energy-accumulating power station and system alarm information, ensure that the automatic operating in power station is safe and reliable.
As shown in Figure 3, the structure in the composite energy storage power station of a kind of execution mode of the present utility model.Energy type energy-storage system 1 is made up of 500kWh plumbic acid energy-storage units 14, is connected to grid side by the two-way inverter 16 of 100kW.Power-type energy-storage system 2 is made up of 100kWh lithium titanate energy-storage units 12, is connected to grid side by the two-way inverter 15 of 500kW.Take into account type energy-storage system 3 to be made up of 500kWh LiFePO4 energy-storage units 13, receive grid side by the two-way inverter 15 of 500kW.
Under composite energy storage power station described in the utility model can be operated in charge mode, composite energy storage coordinated control system 6 is made to perform following operation:
When the distributed energy 10 in active distribution network 9 is after meeting loading demand, unnecessary electric energy is distributed to energy-storage system by composite energy storage coordinated control system 6.Different power energy allocation is given different energy-storage systems by the information such as energy-storage system sustainable charging interval length and maximum power by composite energy storage coordinated control system 6.When monitoring input stable electric power and growing constantly, composite energy storage coordinated control system 6 controls AC power distribution cabinet/AC distribution panel 11 and two-way inverter 4 pairs of energy type energy-storage systems 1 charge; When monitor input electric energy peak-valley difference more greatly and in short-term time, composite energy storage coordinated control system 6 controls AC power distribution cabinet/AC distribution panel 11 and two-way inverter 4 pairs of power-type energy-storage systems 2 charge; Composite energy storage coordinated control system 6 also controls to take into account type energy-storage system 3 for supplementing and adjusting energy type and power-type energy-storage system.
Composite energy storage power station described in the utility model, under can also being operated in discharge mode, makes composite energy storage coordinated control system 6 perform following operation:
When the distributed energy 10 in active distribution network 9 can not meet loading demand time, composite energy storage coordinated control system 6 controls energy-storage system provides electric energy supply load to use.Different energy-storage systems is provided electric energy according to load characteristic by composite energy storage coordinated control system 6.Stablize when monitoring bearing power and grow constantly, composite energy storage coordinated control system 6 controls AC power distribution cabinet/AC distribution panel 11 and two-way inverter 4 pairs of energy type energy-storage systems 1 discharge; When monitoring bearing power impact and be larger and in short-term, composite energy storage coordinated control system 6 controls AC power distribution cabinet/AC distribution panel 11 and two-way inverter 4 pairs of power-type energy-storage systems 2 carry out charge and discharge; Composite energy storage coordinated control system 6 also controls to take into account type energy-storage system 3 for supplementing and adjusting energy type and power-type energy-storage system.
And, described composite energy storage power station, can also work in a manual mode, make composite energy storage coordinated control system 6 perform following operation: composite energy storage coordinated control system 6 controls AC power distribution cabinet/AC distribution panel 11 and two-way inverter 4 carries out discharge and recharge according to the pattern of manually input respectively to energy-storage system.
The composite energy storage power station that the utility model provides can active balance active distribution network load, realize the fast response characteristic of active distribution network, and realize supporting to greatest extent to energy consumption, well solve diversity and the uncertainty of need for electricity in active distribution network, add life-span and the reliability of energy-storage system simultaneously.
Although content of the present utility model has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (7)
1. for a composite energy storage power station for active distribution network, it is characterized in that, this composite energy storage power station comprises:
Three class energy-storage systems: energy type energy-storage system (1), power-type energy-storage system (2), take into account type energy-storage system (3); And,
Difference according to energy-storage system type and watt level is provided with the two-way inverter of three class (4); The two-way inverter of this three class (4) is corresponding with the three class energy-storage systems matched respectively to be connected;
The electric energy of distributed energy (10) charges to three class energy-storage systems through corresponding two-way inverter (4) in active distribution network (9), or makes the electric energy of three class energy-storage systems be input to active distribution network (9) to carry out powering load;
This composite energy storage power station also comprises composite energy storage coordinated control system (6), and it connects the two-way inverter (4) of three class energy-storage systems and correspondence thereof respectively by RS485, also connects described active distribution network (9) by Ethernet.
2. composite energy storage power station according to claim 1, is characterized in that,
Transformer (5) is comprised further in described composite energy storage power station, high-tension electricity from described active distribution network (9) be converted to low tension and flow to described two-way inverter (4), and the low tension from described two-way inverter (4) be converted to the corresponding high-tension electricity of active distribution network (9) and be transported in described active distribution network (9).
3. composite energy storage power station according to claim 1, is characterized in that,
Comprise AC power distribution cabinet/AC distribution panel (11) in described composite energy storage power station further, be wherein provided with three classes two-way inverter (4) ac bus, and the circuit breaker of control three class energy-storage system switch.
4. composite energy storage power station according to claim 1, is characterized in that,
Described composite energy storage power station comprises temperature control system (7) further, is wherein provided with industrial air-conditioning and control system thereof.
5. composite energy storage power station according to claim 1, is characterized in that,
Described composite energy storage power station comprises safety-protection system (8) further, is wherein provided with automatic fire extinguisher, transducer, alarm, and the control system of these devices.
6. composite energy storage power station according to claim 1, is characterized in that,
Energy storage kind in described energy type energy-storage system (1) is lead-acid battery, flow battery or energy storage of drawing water; Energy storage kind in described power-type energy-storage system (2) is lithium titanate battery, ultracapacitor energy storage or flywheel energy storage; The described energy storage kind taken into account in type energy storage (3) is ferric phosphate lithium cell, plumbous carbon battery or compressed-air energy storage.
7. the composite energy storage power station according to claim 1 or 6, is characterized in that,
In described composite energy storage power station, described energy type energy-storage system (1) is made up of lead-acid battery, and described power-type energy-storage system (2) is made up of lithium titanate battery, described in take into account type energy-storage system (3) and be made up of ferric phosphate lithium cell.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105620706A (en) * | 2016-02-19 | 2016-06-01 | 武汉理工大学 | Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105620706A (en) * | 2016-02-19 | 2016-06-01 | 武汉理工大学 | Ship electric propulsion system with harmonic suppressing and regenerative braking functions and control method |
| CN105620706B (en) * | 2016-02-19 | 2018-10-23 | 武汉理工大学 | Watercraft electric propulsion system with harmonics restraint and regenerative braking function and control method |
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Granted publication date: 20141224 |