CN113162092A - Distributed energy storage aggregation system and control method thereof - Google Patents
Distributed energy storage aggregation system and control method thereof Download PDFInfo
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- CN113162092A CN113162092A CN202110551537.7A CN202110551537A CN113162092A CN 113162092 A CN113162092 A CN 113162092A CN 202110551537 A CN202110551537 A CN 202110551537A CN 113162092 A CN113162092 A CN 113162092A
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- 238000004146 energy storage Methods 0.000 title claims abstract description 79
- 238000004220 aggregation Methods 0.000 title claims description 15
- 230000002776 aggregation Effects 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 14
- 238000004891 communication Methods 0.000 claims abstract description 17
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 14
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 238000010248 power generation Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 5
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000007726 management method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
- H02J3/144—Demand-response operation of the power transmission or distribution network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
- H02J2310/14—The load or loads being home appliances
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
- H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
- Y02B70/3225—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/222—Demand response systems, e.g. load shedding, peak shaving
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a distributed energy storage polymerization system, which comprises a microgrid control unit and an energy unit; the microgrid control sheet comprises: the micro-grid control system comprises a micro-grid control center, an information acquisition device, a communication device, a static switch, a plurality of electric operation switches and a circuit breaker; the load unit and the energy unit are connected with an alternating current bus through an electric operation switch, and the alternating current bus is connected with a power grid through a static switch and a breaker; the reasonably planned distributed energy storage not only can play a role in reducing the capacity of a power distribution network and benefiting peak and valley through 'peak clipping and valley filling', but also can make up for the negative influence of the randomness of the distributed energy storage on the safety of a power grid, and correspondingly controls a load unit and an energy unit through different connection states with the power grid, thereby achieving the purpose of efficient, safe and economic operation.
Description
Technical Field
The invention belongs to the technical field of automation control, and particularly relates to a distributed energy storage polymerization system and a control method thereof.
Background
With the reform and development of domestic electric power systems, the high-speed promotion of smart power grids, new energy power generation, distributed power generation and micro-grids and electric vehicles, a large number of distributed power supplies are connected with the power grids. The problems of randomness, short-time high load and the like brought by the distributed system need corresponding energy storage technologies to provide solutions, so that the distributed energy storage technologies are born. The distributed energy storage technology is mainly applied to three aspects including a user side, a distributed power supply side and a power distribution side, is introduced by taking a distributed power supply, the user side or a micro-grid as a background, and is also an important component of an electric vehicle. Compared with centralized energy storage, the distributed energy storage reduces the line loss and the capital pressure of a centralized energy storage power station, but meanwhile, the distributed energy storage also has the characteristics of scattered layout and poor controllability.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a distributed energy storage polymerization system which is higher in controllability, more economical and more applicable.
The technical problem to be solved by the invention is realized by the following technical scheme:
in a first aspect, a distributed energy storage aggregation system is provided, including:
the microgrid control system comprises a microgrid control unit and an energy unit;
the microgrid control sheet comprises: the micro-grid control system comprises a micro-grid control center, an information acquisition device, a communication device, a static switch, a plurality of electric operation switches and a circuit breaker; the load unit and the energy unit are connected with an alternating current bus through an electric operation switch, and the alternating current bus is connected with a power grid through a static switch and a breaker; the micro-grid control center is connected with the electric operation switch, the circuit breaker, the information acquisition device, the communication device and the energy unit.
With reference to the first aspect, further, the energy unit includes a photovoltaic inverter, a photovoltaic panel, an energy storage converter, a BMS, and a battery pack; the photovoltaic inverter is connected with the photovoltaic panel; the battery pack is connected with the BMS, the BMS is connected with the energy storage inverter, and the photovoltaic inverter and the energy storage inverter are both connected with the electric operation switch.
With reference to the first aspect, further, the load unit includes an automobile charging pile, an air conditioner, a computer room and an overhaul lighting; the automobile charging pile, the air conditioner, the computer room and the overhaul lighting are respectively connected with the corresponding electric operation switches.
With reference to the first aspect, further, the energy storage converter has a bidirectional energy conversion function of charging and discharging.
In a second aspect, a control method of a distributed energy storage aggregation system is provided, including:
the micro-grid control center controls the connection and disconnection between the energy storage polymerization system and the power grid through a breaker;
the microgrid control center receives real-time data of the energy unit and the load unit in real time through the communication device, acquires real-time data of a power grid inlet and each electric operation switch through the information acquisition device, and calculates real-time power of the load unit and the energy unit pair according to the acquired real-time data;
and the micro-grid control center controls the power output of the energy unit according to the real-time power of the load unit.
In combination with the second aspect, further, when the power of the load unit suddenly increases, the energy storage converter in the energy unit correspondingly and rapidly increases the output power to keep the voltage of the alternating-current bus stable.
In combination with the second aspect, further, when the energy storage aggregation system is disconnected from the power grid and operates independently, the microgrid control center allocates the energy of the energy unit to the load units according to the power supply priority.
In combination with the second aspect, further, the power supply priority is computer room, maintenance lighting, air conditioner, automobile charging pile from high to low in proper order.
In combination with the second aspect, further, the energy storage converter in the load unit is charged when the electricity price is low or the photovoltaic inverter in the load unit has surplus for power generation, and is discharged when the electricity price is high.
In combination with the second aspect, further, the microgrid control center configures the operating power of the load unit according to the power grid inlet limit power and the photovoltaic inverter power generation power, when the power grid limit and the photovoltaic inverter power generation are insufficient, the energy storage converter releases the battery pack to store electric energy, when the power grid limit is removed or the power generation is redundant, the microgrid control center recovers the operating power of the load unit, and the energy storage converter is switched to the charging mode.
In combination with the second aspect, further, the information acquisition device acquires voltage and current data at the inlet of each electric operation switch, and when the power of a load branch in a load unit connected to a certain electric operation switch is found to be abnormal, the microgrid control center controls the electric operation switch to disconnect the load branch.
The invention has the beneficial effects that: the distributed energy storage reasonably planned by the invention not only can play a role in reducing the capacity of the power distribution network and benefiting from peaks and valleys through 'peak clipping and valley filling', but also can make up for the negative influence of the randomness of the distributed energy storage on the safety of the power grid, and correspondingly controls the load unit and the energy unit through different connection states with the power grid, thereby achieving the purpose of high-efficiency, safe and economic operation.
Drawings
Fig. 1 is a schematic structural diagram of a distributed energy storage polymerization system of the present invention;
fig. 2 is a schematic communication structure diagram of the distributed energy storage aggregation system according to the present invention;
FIG. 3 is a logic diagram of offline operation control of the distributed energy storage aggregation system according to the present invention;
fig. 4 is a grid-connected operation control logic diagram of the distributed energy storage aggregation system of the present invention.
Detailed Description
To further describe the technical features and effects of the present invention, the present invention will be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1 to 4, a distributed energy storage polymerization system provided by the present invention includes:
the microgrid control sheet comprises: the micro-grid control System comprises a micro-grid control center (Energy Management System), an information acquisition device, a communication device, a static switch, a plurality of electric operation switches and a circuit breaker; the load unit and the energy unit are connected with an alternating current bus through an electric operation switch, and the alternating current bus is connected with a power grid through a static switch and a breaker; the microgrid control center is connected with the electric operation switch, the breaker QF, the information acquisition device, the communication device and the energy unit vector.
The energy unit comprises a photovoltaic inverter, a photovoltaic panel, an energy storage converter, a BMS (power management system) and a battery pack; the photovoltaic inverter is connected with the photovoltaic panel; the battery pack is connected with the BMS, the BMS is connected with the energy storage inverter, and the photovoltaic inverter and the energy storage inverter are both connected with the electric operation switch.
Wherein, load cell includes that the car fills electric pile, air conditioner, computer lab and overhauls the illumination.
The energy storage converter has the bidirectional energy conversion function of charging and discharging.
The information acquisition device includes: the device comprises an information acquisition module, a voltage sensor and a current sensor.
The communication apparatus includes: protocol converter, wired communication module, wireless communication module, and antenna
The electric automobile charging pile, the air conditioner, the computer room, the maintenance lighting, the photovoltaic inverter and the energy storage converter are connected with corresponding cables for the electric operating switch wire outlet ends, the electric operating switch wire inlet end is connected with the cable for the alternating current bus, the alternating current bus is connected with the cable for the static switch wire outlet end, the static switch wire inlet end is connected with the cable for the circuit breaker QF wire outlet end, and the circuit breaker QF wire inlet end is connected with the cable for the power grid.
The communication device is connected with the electric automobile charging pile, the photovoltaic inverter, the energy storage converter, the BMS and the antenna through special communication cables. The communication device is wirelessly connected with the air conditioner.
The working process of the system is mainly as follows:
the micro-grid control system comprises a micro-grid control center, an information acquisition device, a static switch, a breaker QF and an electric operation switch, wherein the information acquisition device acquires analog quantity signals of voltage and current of inlets of all branches, acquires switching quantity signals of states of the static switch, the breaker QF and the electric operation switch, and transmits data to the micro-grid control center.
The communication device collects operation information of the photovoltaic inverter and the energy storage converter, operation information of the air conditioner and the charging pile and battery information, and transmits collected data to the microgrid control center. The micro-grid control center controls the on-off of each electric operation switch, and controls the start, stop and running power of the photovoltaic inverter, the energy storage converter, the air conditioner and the electric automobile charging pile.
The energy unit absorbs and releases electric energy, the energy storage converter has a bidirectional energy conversion function of charging and discharging, the energy storage converter has a grid-connected operation function and a power grid disconnection operation function, and after the distributed energy storage aggregation power system is disconnected from a power grid, the energy storage converter provides active and reactive support for an alternating current bus by using the power grid disconnection operation function and the electric energy stored in the battery pack, so that the electricity consumption of important loads is guaranteed.
In conjunction with fig. 3: when the system runs independently in an off-line mode, the micro-grid control center acquires the SOC value of the available electric energy of the battery pack in real time through the BMS, and distributes energy sources according to the priority sequence from high to low according to the conditions of a computer room, overhaul lighting, an air conditioner and an electric vehicle charging pile.
In the process that the SOC of the available electric energy of the battery pack is reduced from 100% to 70%, the micro-grid control center controls the running power of the electric automobile charging pile to be reduced to 0 in a linear relation according to the percentage: charging pile real-time load = charging pile rated power (current SOC value-70%)/100%;
in the process that the SOC of the available electric energy of the battery pack is reduced to 35% from 70%, the micro-grid control center controls the operation power of the air conditioner according to the percentage, and the power is reduced until the power is 0 in a linear relation: air conditioner real-time load = air conditioner rated power (current SOC value-35%)/100%;
when the SOC of the available electric energy of the battery pack is reduced to below 20%, the micro-grid control center disconnects the electric automobile, the air conditioner and the overhaul lighting electric operation switch;
when the SOC of the available electric energy of the battery pack is reduced to below 5%, the microgrid control center controls the energy storage converter to quit operation.
With reference to fig. 4: when the system is connected with a power grid to operate, the micro-grid control center acquires the SOC value of the available electric energy of the battery pack in real time through the BMS, and the energy storage converter releases the electric energy when the power of the power grid inlet is limited and the power generation amount of the photovoltaic inverter is insufficient, so that the power supply shortage of the power demand of the load unit cannot be met; when the power supply is sufficient, namely the power supply is not limited by the power grid and the generated energy of the photovoltaic inverter is surplus, the energy storage converter absorbs and absorbs the electric energy.
The system is operated in a grid-connected mode, the power supply is sufficient, and the load unit is not limited in power: if the SOC is less than 100%, the energy storage converter starts to absorb electric energy to charge the battery when charging operation, and the energy storage converter stops operating when the SOC reaches 100%;
the system is operated in a grid-connected mode, and when the power supply is insufficient: if the SOC is less than 35%, the energy storage converter does not operate; if the SOC is more than or equal to 50%, the energy storage converter is discharged and operates, the system does not limit the power of the load unit, and the operating power of the energy storage converter = the limited use power of the power grid + the power generation power of the photovoltaic inverter-the load power; when the SOC is more than 50% and is more than or equal to 35%, the energy storage converter is in discharge operation, and the real-time load of the air conditioner and the charging pile = rated power (the current SOC value is 35%)/100%; and when the SOC is less than 35%, the energy storage converter stops running. When the power limitation of the power grid is removed and surplus is generated, the power limitation of the load unit is removed, and the energy storage converter is changed from discharging operation to charging operation.
The energy storage converter is charged when the electricity price is low or the photovoltaic inverter generates surplus electricity and discharges when the electricity price is high or the electricity is insufficient, and the energy storage converter adjusts the operation power in real time according to the data model.
And the micro-grid control center controls the electric operation switch to be switched off and cuts off the fault branch. The microgrid control center controls the breaker QF and the static switch to act, and controls the microgrid to be switched to a standby circuit or to control off-line independent operation of the distributed aggregation system when the power grid fails.
The above embodiments do not limit the present invention in any way, and all technical solutions obtained by taking equivalent substitutions or equivalent changes fall within the scope of the present invention.
Claims (11)
1. A distributed energy storage aggregation system is characterized by comprising a microgrid control unit and an energy unit;
the microgrid control sheet comprises: the micro-grid control system comprises a micro-grid control center, an information acquisition device, a communication device, a static switch, a plurality of electric operation switches and a circuit breaker; the load unit and the energy unit are connected with an alternating current bus through an electric operation switch, and the alternating current bus is connected with a power grid through a static switch and a breaker; the micro-grid control center is connected with the electric operation switch, the circuit breaker, the information acquisition device, the communication device and the energy unit.
2. The distributed energy storage polymerization system of claim 1, wherein the energy unit comprises a photovoltaic inverter, a photovoltaic panel, an energy storage converter, a BMS, a battery pack; the photovoltaic inverter is connected with the photovoltaic panel; the battery pack is connected with the BMS, the BMS is connected with the energy storage inverter, and the photovoltaic inverter and the energy storage inverter are both connected with the electric operation switch.
3. The distributed energy storage polymerization system of claim 1, wherein the load units comprise an automobile charging pile, an air conditioner, a computer room and service lighting; the automobile charging pile, the air conditioner, the computer room and the overhaul lighting are respectively connected with the corresponding electric operation switches.
4. The distributed energy storage polymerization system according to claim 1, wherein the energy storage converter has a bidirectional energy conversion function of charging and discharging.
5. The control method of the distributed energy storage and aggregation system according to claims 1 to 4, comprising:
the micro-grid control center controls the connection and disconnection between the energy storage polymerization system and the power grid through a breaker;
the microgrid control center receives real-time data of the energy unit and the load unit in real time through the communication device, acquires real-time data of a power grid inlet and each electric operation switch through the information acquisition device, and calculates real-time power of the load unit and the energy unit pair according to the acquired real-time data;
and the micro-grid control center controls the power output of the energy unit according to the real-time power of the load unit.
6. The method for controlling the distributed energy storage polymerization system according to claim 5, wherein the energy storage converters in the energy units increase the output power rapidly to keep the AC bus voltage stable when the power of the load units increases suddenly.
7. The control method of the distributed energy storage and aggregation system according to claim 5, wherein when the energy storage and aggregation system is disconnected from the power grid and operates independently, the microgrid control center distributes the energy of the energy units to the load units according to the power supply priority.
8. The control method of the distributed energy storage and aggregation system according to claim 7, wherein the power supply priority comprises a computer room, maintenance lighting, an air conditioner and an automobile charging pile in sequence from high to low.
9. The method for controlling the distributed energy storage polymerization system according to claim 5, wherein the energy storage converter in the load unit is charged when the electricity price is low or the photovoltaic inverter in the load unit has a margin for power generation, and is discharged when the electricity price is high.
10. The method for controlling the distributed energy storage polymerization system according to claim 5, wherein the microgrid control center configures the operating power of the load units according to the power grid inlet limit power and the photovoltaic inverter generation power, when the power grid limit and the photovoltaic inverter generate insufficient power, the energy storage converter releases the battery pack to store electric energy, when the power grid limit is removed or the power generation is redundant, the microgrid control center recovers the operating power of the negative unit, and the energy storage converter is switched to the charging mode.
11. The control method of the distributed energy storage polymerization system according to claim 5, wherein the information acquisition device acquires data of the inlet voltage and the inlet current of each electrically operated switch, and when the power of a load branch in a load unit connected with a certain electrically operated switch is found to be abnormal, the microgrid control center controls the electrically operated switch to disconnect the load branch.
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| CN202110551537.7A CN113162092A (en) | 2021-05-20 | 2021-05-20 | Distributed energy storage aggregation system and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977240A (en) * | 2022-07-06 | 2022-08-30 | 南京国电南自新能源科技有限公司 | Flywheel energy storage multi-machine parallel converter and control method |
| CN116826795A (en) * | 2023-06-01 | 2023-09-29 | 中能建储能科技(武汉)有限公司 | Energy storage power station non-planned island operation load distribution control equipment and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832706A (en) * | 2012-07-18 | 2012-12-19 | 中国电力科学研究院 | Distributed power stratified coordination control system of microgrid and method |
| CN205921457U (en) * | 2016-08-30 | 2017-02-01 | 江西省电力设计院 | Little electric wire netting control system |
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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832706A (en) * | 2012-07-18 | 2012-12-19 | 中国电力科学研究院 | Distributed power stratified coordination control system of microgrid and method |
| CN205921457U (en) * | 2016-08-30 | 2017-02-01 | 江西省电力设计院 | Little electric wire netting control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114977240A (en) * | 2022-07-06 | 2022-08-30 | 南京国电南自新能源科技有限公司 | Flywheel energy storage multi-machine parallel converter and control method |
| CN116826795A (en) * | 2023-06-01 | 2023-09-29 | 中能建储能科技(武汉)有限公司 | Energy storage power station non-planned island operation load distribution control equipment and method |
| CN116826795B (en) * | 2023-06-01 | 2024-03-15 | 中能建储能科技(武汉)有限公司 | Energy storage power station non-planned island operation load distribution control equipment and method |
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