CN109617104A - Grid control method is filled in a kind of storage of light - Google Patents

Grid control method is filled in a kind of storage of light Download PDF

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Publication number
CN109617104A
CN109617104A CN201811496607.8A CN201811496607A CN109617104A CN 109617104 A CN109617104 A CN 109617104A CN 201811496607 A CN201811496607 A CN 201811496607A CN 109617104 A CN109617104 A CN 109617104A
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China
Prior art keywords
power
energy
storage
load
converter
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Pending
Application number
CN201811496607.8A
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Chinese (zh)
Inventor
郝伟
蒋勃
谭敏戈
蒋琪
李建兴
杨智
朱岸明
苟秦晋
杨柳
戈弓
尚宏
李尧
韩波
彭芳
井刚
何凯
薛晶
毕潇昳
薛军
贾静
高彦骋
吴建民
陈晓
靳媛
李品超
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Xi'an electric power college
State Grid Corp of China SGCC
Original Assignee
Xi'an electric power college
State Grid Corp of China SGCC
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Application filed by Xi'an electric power college, State Grid Corp of China SGCC filed Critical Xi'an electric power college
Priority to CN201811496607.8A priority Critical patent/CN109617104A/en
Publication of CN109617104A publication Critical patent/CN109617104A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/383
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48Controlling the sharing of the in-phase component
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

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  • 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 kind of storages of light to fill microgrid control method, photovoltaic generating system is connected on DC bus by DC/DC converter, energy-storage system is connected on DC bus by two-way DC/DC, power distribution network is connected on DC bus by two-way DC/AC converter, it is filled in micro-grid system in light storage, piconet controller passes through CAN bus and photovoltaic generating system, energy-storage system, power distribution network and charging load connection acquisition microgrid each unit operating status and information about power, it exports control signal and is respectively acting on DC/DC converter, two-way DC/DC converter and two-way DC/AC converter.The present invention can be improved the economic benefit and environmental benefit during charging station construction operation.

Description

Grid control method is filled in a kind of storage of light
Technical field
The present invention relates to light storages to fill micro-capacitance sensor control field, and in particular to grid control method is filled in a kind of storage of light.
Background technique
It is called for the society of response " environmentally friendly, energy conservation type ", electric car comes into being, greatly develops, because Secondary, needing to establish charging station is that electric car improves power resources.Match currently, establishing large and medium-sized charging station and requiring to build around Power grid provides electric energy for charging pile.And user's charging time has uncertainty, so that power distribution network is not easy to manage, it may It is more difficult to dispatching of power netwoks, or cause voltage ripple of power network etc.;Meanwhile charging station electric energy is mostly from fossil fuel power, Carbon discharge capacity does not significantly reduce, and environmental pressure is still very big.But if generation of electricity by new energy can be increased in electric power demand side, That is micro-grid system is filled in light storage, and the above problem can be effectively relieved.
It mainly includes photovoltaic generating system that micro-grid system is filled in light storage, photovoltaic combining inverter, energy-storage system, and energy storage is two-way DC/DC converter, electric automobile charging pile;Photovoltaic generation unit passes through as the main generator unit of system, institute's generated energy a part Gird-connected inverter imports power grid, supplies charging pile, and redundance is stored in energy-storage battery by energy storage converter.When photovoltaic was contributed When surplus or charging vehicle is less, charge to energy-storage battery;When photovoltaic undercapacity or charging load increase, energy-storage battery Electric discharge improves electricity for load.
It being filled in micro-capacitance sensor in light storage, photovoltaic generating system is as main energy source, and electric car is as main loads, and two Person all has randomness and uncertainty, and to meet the workload demand that charges, micro-capacitance sensor needs to be incorporated into the power networks in if necessary.But It is that micro-grid connection operation is necessarily affected to power distribution network operation, how not only meets charging power load demand, but also energy Enough improve power distribution network operation conditions, achieve the purpose that the peak load that disappears, is the main problem that light storage fills that micro-capacitance sensor control aspect faces.
Summary of the invention
The purpose of the present invention is to provide a kind of storages of light to fill grid control method, to overcome of the existing technology ask Topic, the present invention can satisfy the load electric energy demand that charges in charging station, meanwhile, it reduces large-scale charging station operation and power distribution network is caused Pressure, promote Photovoltaic new energy effective use nearby, can be improved economic benefit and ring during charging station construction operation Border benefit.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
Grid control method is filled in a kind of storage of light, fills micro-net control device using light storage, microgrid control dress is filled in the light storage Set including be connected on DC bus by DC/DC converter photovoltaic generating system, be connected to by two-way DC/DC converter It energy-storage system on DC bus, the power distribution network being connected on DC bus by two-way DC/AC converter and is directly connected to Charging load on DC bus;Photovoltaic generating system, energy-storage system, power distribution network and charging load are connected to microgrid control Device, the output end of piconet controller are connected to DC/DC converter, two-way DC/DC converter and two-way DC/AC converter;
The piconet controller includes detecting for acquiring the photovoltaic generation power of photovoltaic power generation system output power in real time Unit, the energy storage device SOC detection unit for acquiring energy-storage system remaining capacity in real time are run for acquiring power distribution network in real time The grid load curve acquisition unit of state and load curve and charging for acquiring each charging load output power in real time Workload demand power detecting unit, the photovoltaic generation power detection unit, energy storage device SOC detection unit, network load are bent Line acquisition unit and the output end for the workload demand power detecting unit that charges are connected to control decision device, and control decision device passes through Output interface is connected to DC/DC converter, two-way DC/DC converter and two-way DC/AC converter.
Light storage fill microgrid control method the following steps are included:
Step 1: the initial parameter of t moment: photovoltaic power generation system output power Ps, energy-storage system is inputted to control decision device Remaining capacity Pb, charging workload demand power P l and system loss Δ P;
Step 2: judging whether photovoltaic power generation system output power and energy-storage system remaining capacity are able to satisfy charging load and need Power is sought, if the sum of photovoltaic power generation system output power and energy-storage system remaining capacity are greater than charging workload demand power and system The sum of loss power, i.e. Ps+Pb > Pl+ Δ P then judge whether micro-grid system has photovoltaic output again, that is, enter step 3;
If the sum of photovoltaic power generation system output power and energy-storage system remaining capacity are less than or equal to charging workload demand power The sum of with system loss power, i.e. Ps+Pb≤Pl+ Δ P, then to control decision device input current time distribution Running State and Load curve controls micro-grid system from power distribution network power purchase, supply charging load if power distribution network is in the load valley period;If Power distribution network is in the load peak period, then controls charging load and orderly charge, terminate;
Step 3: if there is photovoltaic output, i.e., micro-grid system be in daytime operation, then judge again energy-storage system whether Full Charge Capacity, If energy-storage system is not full of, charged to energy-storage system until being full of;If energy-storage system has expired electricity, extra electricity is supplied Power distribution network;
If exporting without photovoltaic, i.e., micro-grid system is in night operation, then inputs current time distribution to control decision device Running State and load curve control micro-grid system from power distribution network power purchase if power distribution network is in the load valley period, until Energy-storage system is full of;If power distribution network is in the load peak period, the extra electricity that system is issued supplies power distribution network.
Further, the charging load is electric automobile charging pile.
Further, photovoltaic generating system, energy-storage system, power distribution network and charging load are connected to micro- by CAN bus Net controller.
Compared with prior art, the invention has the following beneficial technical effects:
The present invention fills micro grid control system as light storage, includes information collection and control decision, can control light storage and fill Micro-capacitance sensor smoothly utilizes photovoltaic power generation to export, and so that entire light storage is filled micro-capacitance sensor with power controllability and schedulability, reduction is matched Network load peak valley difference value enhances power distribution network security and stability and power supply quality, in the case where meeting charging workload demand, subtracts Light power distribution network operating pressure can be improved stability and economy that micro-capacitance sensor operation is filled in light storage.The method of the present invention is filled with meeting It premised on electrical load requirement, can be maximally utilized with photovoltaic power generation electricity as target, take into account power distribution network operating pressure and energy storage System state-of-charge comprehensively considers system each unit working characteristics, and light storage can be made to fill micro-grid system and reach relatively inexpensive conjunction The operating status of reason.
The present invention can satisfy the load electric energy demand that charges in charging station substantially, meanwhile, reduce large-scale charging station operation pair Pressure caused by power distribution network promotes Photovoltaic new energy effective use nearby, can be improved the warp during charging station construction operation Benefit of helping and environmental benefit.
Detailed description of the invention
Fig. 1 is the topological diagram that micro-capacitance sensor is filled in a kind of storage of light;
Fig. 2 is piconet controller schematic diagram of the invention;
Fig. 3 is that grid control method flow chart is filled in light storage of the invention.
Specific embodiment
Present invention is further described in detail with reference to the accompanying drawing:
Fig. 1 describes the topology that micro-capacitance sensor is filled in a kind of storage of light, and photovoltaic generating system is connected to direct current by DC/DC converter On bus, as the main generator unit of system;
Energy-storage system is connected on DC bus by two-way DC/DC converter, is that regulation is micro- as system stored energy unit Net system power balance adjusts power distribution network and disappears the formant of peak load;
Power distribution network is connected on DC bus by two-way DC/AC converter, on the one hand when microgrid power demand is larger, Electric energy is provided to the load that charges in microgrid, on the other hand in power distribution network itself load curve peak valley phase, the electricity for receiving microgrid to generate Can, disappear peak load.
Light storage is filled in micro-grid system, piconet controller by CAN bus and photovoltaic generating system, energy-storage system, Power distribution network and charging load connection, for acquiring microgrid each unit operating status and information about power, output control signal difference DC/DC converter, two-way DC/DC converter, two-way DC/AC converter are acted on, the light storage, which is filled in micro-capacitance sensor, mainly charges Load is electric car charging load.
Fig. 2 is piconet controller of the invention, including photovoltaic generation power detection unit, energy storage device SOC detection unit, Charge workload demand power detecting unit, grid load curve acquisition unit and control decision device.
Wherein photovoltaic generation power detection unit acquires photovoltaic power generation system output power in real time, feeds back to control decision Device.
Energy storage device SOC detection unit acquires energy-storage system remaining capacity in real time, feeds back to control decision device.
Charging workload demand power detecting unit acquires each charging load (charging pile) output power in real time, determines that charging is negative Lotus demand feeds back to control decision device.
Grid load curve acquisition unit acquires distribution Running State and grid load curve in real time, feeds back to control and determines Plan device.
Control decision device fills grid control method by collected each unit operating status and information about power, according to light storage Logic analysis is carried out, DC/DC converter, two-way DC/DC converter are controlled, two-way DC/AC converter is carried out according to system requirements Switch motion.
Fig. 3 is the control method that micro-capacitance sensor control device is filled based on light storage, and this method is divided into following steps:
Step 1: input t moment initial parameter photovoltaic power generation system output power Ps, energy-storage system remaining capacity Pb, charging Workload demand power P l, system loss Δ P;
Step 2: judging whether photovoltaic power generation system output power and energy-storage system remaining capacity are able to satisfy charging load and need Power is sought, if photovoltaic power generation system output power and energy-storage system remaining capacity are greater than charging workload demand power and system loss Power, i.e. Ps+Pb > Pl+ Δ P then judge whether system has photovoltaic output again;
Step 3: if there is photovoltaic output, i.e., micro-grid system be in daytime operation, then judge again energy-storage system whether Full Charge Capacity, If energy-storage system is not full of, charged to energy-storage system until being full of;If energy-storage system has expired electricity, system is issued extra Electricity supplies power distribution network;
Step 4: if exporting without photovoltaic, i.e., micro-grid system is in night operation, then inputs distribution Running State and bear Lotus curve controls micro-grid system from power distribution network power purchase, until energy-storage system is full of if power distribution network is in the load valley period; If power distribution network is in the load peak period, the extra electricity that system is issued supplies power distribution network;
Step 5: if photovoltaic power generation system output power and energy-storage system remaining capacity are less than or equal to charging workload demand function Rate and system loss power, i.e. Ps+Pb≤Pl+ Δ P, then input distribution Running State and load curve, if power distribution network is in The load valley period then controls micro-grid system from power distribution network power purchase, supply charging load;If power distribution network is in load peak Section then controls charging load and orderly charges.
The present invention devises a kind of storage of light and fills micro-capacitance sensor control device, proposes a kind of light storage based on the control device and fills Microgrid control method, the device and method can satisfy the load electric energy demand that charges in charging station substantially, meanwhile, it reduces large size and fills Power station runs the pressure caused by power distribution network, promotes Photovoltaic new energy effective use nearby, can be improved charging station construction operation Economic benefit and environmental benefit in the process.

Claims (3)

1. grid control method is filled in a kind of light storage, which is characterized in that fill micro-capacitance sensor control device using light storage, the light storage is filled Micro-capacitance sensor control device includes the photovoltaic generating system being connected on DC bus by DC/DC converter, by two-way DC/DC Energy-storage system that converter is connected on DC bus is connected to the power distribution network on DC bus by two-way DC/AC converter And it is connected directly between the charging load on DC bus;Photovoltaic generating system, energy-storage system, power distribution network and charging load connect It is connected to piconet controller, the output end of piconet controller is connected to DC/DC converter, two-way DC/DC converter and two-way DC/ AC converter;
The piconet controller include for acquire in real time the photovoltaic generation power detection unit of photovoltaic power generation system output power, For acquiring the energy storage device SOC detection unit of energy-storage system remaining capacity in real time, for acquiring distribution Running State in real time Charging load with the grid load curve acquisition unit of load curve and for acquiring each charging load output power in real time Demand power detection unit, the photovoltaic generation power detection unit, energy storage device SOC detection unit, grid load curve are adopted Collection unit and the output end for the workload demand power detecting unit that charges are connected to control decision device, and control decision device passes through output Interface is connected to DC/DC converter, two-way DC/DC converter and two-way DC/AC converter
Light storage fill grid control method the following steps are included:
Step 1: to the initial parameter of control decision device input t moment: photovoltaic power generation system output power Ps, energy-storage system are remaining Electricity Pb, charging workload demand power P l and system loss Δ P;
Step 2: judging whether photovoltaic power generation system output power and energy-storage system remaining capacity are able to satisfy charging workload demand function Rate, if the sum of photovoltaic power generation system output power and energy-storage system remaining capacity are greater than charging workload demand power and system loss The sum of power, i.e. Ps+Pb > Pl+ Δ P then judge whether micro-grid system has photovoltaic output again, that is, enter step 3;
If the sum of photovoltaic power generation system output power and energy-storage system remaining capacity are less than or equal to charging workload demand power and are The sum of system loss power, i.e. Ps+Pb≤Pl+ Δ P then input current time distribution Running State and load to control decision device Curve controls micro-grid system from power distribution network power purchase, supply charging load if power distribution network is in the load valley period;If distribution Net is in the load peak period, then controls charging load and orderly charge, terminate;
Step 3: if there is photovoltaic output, i.e., micro-grid system be in daytime operation, then judge again energy-storage system whether Full Charge Capacity, if storage Energy system is not full of, then is charged to energy-storage system until being full of;If energy-storage system has expired electricity, extra electricity is supplied into distribution Net;
If exporting without photovoltaic, i.e., micro-grid system is in night operation, then to control decision device input current time power distribution network fortune Row state and load curve control micro-grid system from power distribution network power purchase, until energy storage if power distribution network is in the load valley period System is full of;If power distribution network is in the load peak period, the extra electricity that system is issued supplies power distribution network.
2. microgrid control method is filled in a kind of light storage according to claim 1, which is characterized in that the charging load is electronic Automobile charging pile.
3. microgrid control method is filled in a kind of light storage according to claim 1, which is characterized in that photovoltaic generating system, energy storage System, power distribution network and charging load are connected to piconet controller by CAN bus.
CN201811496607.8A 2018-12-07 2018-12-07 Grid control method is filled in a kind of storage of light Pending CN109617104A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110611308A (en) * 2019-08-30 2019-12-24 贵州电网有限责任公司 Method for correcting and determining minimum active power of new energy station participating in direct electricity purchase of large users
CN110912169A (en) * 2019-12-03 2020-03-24 国网天津市电力公司 Design method and topological structure of alternating current-direct current micro-grid
CN111864805A (en) * 2020-08-26 2020-10-30 合肥工业大学 Energy management method of industrial park micro-grid light storage combined power generation device
CN112491045A (en) * 2020-11-23 2021-03-12 南京工程学院 Intelligent household light storage and energy charging interconnection system and energy efficiency management method thereof
CN112510756A (en) * 2020-11-25 2021-03-16 国网湖南省电力有限公司 Micro-grid optical storage and charging coordinated operation method and system based on power level
CN112671018A (en) * 2020-12-23 2021-04-16 国网湖北省电力有限公司电力科学研究院 Station network interaction type optical storage and charging intelligent charging station based on direct-current micro-network and control method
CN112848951A (en) * 2020-12-06 2021-05-28 南京工业大学 Off-grid type light storage, charging and power supply coordination control system and method
CN114336583A (en) * 2021-12-27 2022-04-12 广西大学 5G base station light storage direct current micro-grid energy supply system and method
WO2023029335A1 (en) * 2021-09-06 2023-03-09 福建时代星云科技有限公司 Parameter configuration method and terminal for photovoltaic storage and charging system
CN115882516A (en) * 2023-03-08 2023-03-31 杭州欣美成套电器制造有限公司 Photovoltaic grid-connected control device and method for efficient photovoltaic charging control
CN116191509A (en) * 2022-12-30 2023-05-30 深圳迈格瑞能技术有限公司 Control method of optical storage system, optical storage system and storage medium
CN116316767A (en) * 2023-05-09 2023-06-23 江苏大秦新能源科技有限公司 Network side power management control method and device for optical storage system

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CN207910488U (en) * 2018-01-08 2018-09-25 三峡大学 A kind of multilayer micro-grid system provided multiple forms of energy to complement each other
CN108879780A (en) * 2018-07-27 2018-11-23 天津津电供电设计所有限公司 Micro-capacitance sensor is filled in grid control method, micro grid control system and light storage

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CN207910488U (en) * 2018-01-08 2018-09-25 三峡大学 A kind of multilayer micro-grid system provided multiple forms of energy to complement each other
CN108879780A (en) * 2018-07-27 2018-11-23 天津津电供电设计所有限公司 Micro-capacitance sensor is filled in grid control method, micro grid control system and light storage

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110611308B (en) * 2019-08-30 2022-05-06 贵州电网有限责任公司 Method for correcting and determining minimum active power of new energy station participating in direct electricity purchase of large users
CN110611308A (en) * 2019-08-30 2019-12-24 贵州电网有限责任公司 Method for correcting and determining minimum active power of new energy station participating in direct electricity purchase of large users
CN110912169A (en) * 2019-12-03 2020-03-24 国网天津市电力公司 Design method and topological structure of alternating current-direct current micro-grid
CN111864805A (en) * 2020-08-26 2020-10-30 合肥工业大学 Energy management method of industrial park micro-grid light storage combined power generation device
CN111864805B (en) * 2020-08-26 2021-11-09 合肥工业大学 Energy management method of industrial park micro-grid light storage combined power generation device
CN112491045A (en) * 2020-11-23 2021-03-12 南京工程学院 Intelligent household light storage and energy charging interconnection system and energy efficiency management method thereof
CN112510756A (en) * 2020-11-25 2021-03-16 国网湖南省电力有限公司 Micro-grid optical storage and charging coordinated operation method and system based on power level
CN112848951B (en) * 2020-12-06 2024-05-14 南京工业大学 Off-grid type optical storage charging and power supply coordinated control system and method
CN112848951A (en) * 2020-12-06 2021-05-28 南京工业大学 Off-grid type light storage, charging and power supply coordination control system and method
CN112671018B (en) * 2020-12-23 2023-05-12 国网湖北省电力有限公司电力科学研究院 Station network interaction type optical storage charging intelligent charging station based on direct current micro-grid and control method
CN112671018A (en) * 2020-12-23 2021-04-16 国网湖北省电力有限公司电力科学研究院 Station network interaction type optical storage and charging intelligent charging station based on direct-current micro-network and control method
WO2023029335A1 (en) * 2021-09-06 2023-03-09 福建时代星云科技有限公司 Parameter configuration method and terminal for photovoltaic storage and charging system
CN114336583A (en) * 2021-12-27 2022-04-12 广西大学 5G base station light storage direct current micro-grid energy supply system and method
CN114336583B (en) * 2021-12-27 2023-06-23 广西大学 5G base station light storage direct current micro-grid energy supply system and method
CN116191509A (en) * 2022-12-30 2023-05-30 深圳迈格瑞能技术有限公司 Control method of optical storage system, optical storage system and storage medium
CN116191509B (en) * 2022-12-30 2024-03-22 深圳迈格瑞能技术有限公司 Control method of optical storage system, optical storage system and storage medium
CN115882516A (en) * 2023-03-08 2023-03-31 杭州欣美成套电器制造有限公司 Photovoltaic grid-connected control device and method for efficient photovoltaic charging control
CN116316767A (en) * 2023-05-09 2023-06-23 江苏大秦新能源科技有限公司 Network side power management control method and device for optical storage system
CN116316767B (en) * 2023-05-09 2023-08-11 江苏大秦新能源科技有限公司 Network side power management control method and device for optical storage system

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Application publication date: 20190412