CN112531760B - Light storage and charging integrated layered coordination control system and control strategy thereof - Google Patents
Light storage and charging integrated layered coordination control system and control strategy thereof Download PDFInfo
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0073—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source when the main path fails, e.g. transformers, busbars
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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
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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Abstract
The invention provides a light storage and charging integrated layered coordination control system and a control strategy thereof, relates to the technical field of light storage and charging integrated control, and solves the problem that the research of the existing light storage and charging integrated technology cannot efficiently exert the coordination control function of light storage and charging peak clipping and valley filling and source charge interaction promotion.
Description
Technical Field
The invention relates to the technical field of light storage and charging integrated control, in particular to a light storage and charging integrated layered coordination control system and a control strategy thereof.
Background
In recent years, with the development of smart parks and electric vehicles, large-scale electric vehicles have generated some new influences on the traditional power grid as a special novel load, the charging of the electric vehicles has certain randomness in time and space, and the disordered charging mode causes great pressure to the power grid in the peak period of power utilization, and the risk of instability of the power grid is increased. The photovoltaic power generation and distributed energy storage system is used as clean energy and can be distributed and applied to various communities in a city, the power grid pressure and the power transmission loss can be reduced, and the application value can be better exerted by combining with the charging of the distributed electric automobile.
At present, photovoltaic, energy storage, the electric automobile fills the integration and constitutes the direct current light storage charging station who altogether direct current bus one of electric automobile fills one of the new form of electric pile, utilize the characteristic of photovoltaic and energy storage, photovoltaic and energy storage not only can be as filling the power supply of electric pile and supply, reduce the purchase electricity expense of filling the electric pile, and through photovoltaic, energy storage, the coordinated control of charging and discharging stake, can promote the friendly nature of extensive electric automobile charging to the electric wire netting, the charging station is based on the direct current topological form of altogether direct current bus simultaneously, a large amount of conversion links have been reduced, the investment of charging station has been reduced. However, since the new energy vehicle still exists in a distributed manner after being charged, if the new energy vehicle cannot be transported in time, the part of energy can be left unused, if the electric energy in the new energy vehicle which is not used is aggregated and reasonably released, new value can be met, the optical storage charging station can play a role of serving a power grid to a certain extent, the energy storage battery or the electric vehicle charging pile is charged in a low-ebb period of power consumption, the energy storage battery or the electric vehicle charging pile discharges to compensate the power grid to reduce the load of the power grid in a peak period of power consumption, on one hand, the effect of peak clipping and valley filling can be achieved, on the other hand, certain economic benefit also exists, and if the reserved aggregation and release of the electric energy of the new energy vehicle can be achieved, the friendly interaction of the peak clipping and valley filling and the power grid-user load can be achieved.
In 2018, 1 month and 4 days, a Chinese patent (publication number: CN 10854779A) discloses a light storage, charging and replacing power station and a cloud energy storage system thereof, and specifically discloses: the photovoltaic array and a converter thereof, the energy storage device and a converter thereof, the battery replacing group and a converter thereof, the energy management system and the charging pile; the photovoltaic array, the energy storage device and the battery replacing group are respectively connected with the bus through respective converters, and the charging pile is connected with the bus and used for providing charging and replacing electric quantity for the electric automobile; the energy management system is respectively connected with the control end of the controllable switch and each converter; the energy management system comprises a microgrid controller, an engineer station, a real-time server and a bidirectional converter; the microgrid controller is used for completing off-grid detection and automatic grid connection functions, realizing stable operation under different working conditions in the system, and monitoring and coordinative control over each converter and the charging pile; the engineer station and the real-time server are used for realizing the collection, analysis, statistics, storage and the like of data in the optical storage charging and replacing station; the cloud energy storage user is directly connected with the power grid, and the charging station serves as a cloud energy storage provider; the resource utilization efficiency is improved by sharing the resources of the energy storage device and the battery replacement pack through the charging station, and the energy storage use requirements of cloud energy storage users are further met, but the conventional idea of the current integrated light storage and charging integrated application is really based on the characteristics, but the conventional idea is basically limited to the characteristics, so that the technical scheme of the patent cannot overcome the problem of how to efficiently and fully exert the coordination control function of peak clipping and valley filling of the light storage and charging integrated system and promoting source-load interaction, and the problem also becomes a great problem faced by the technical personnel in the field at present.
Disclosure of Invention
In order to solve the problem that the existing research of light storage and charging integration can not efficiently exert the coordination control function of light storage, charging, peak clipping and valley filling and source-load interaction promotion, the invention provides a light storage and charging integration hierarchical control system and a control strategy thereof, which promote the friendly interaction of 'power grid-user load', realize the idea of peak clipping and valley filling, and furthest utilize the value of light storage and charging integration.
In order to achieve the technical effects, the technical scheme of the invention is as follows:
a light storage and charging integrated layered coordination control system comprises: the system comprises a battery energy management system layer, a direct-current charging and discharging pile layer, a current conversion system layer, a cloud platform server, an intermediate communication device, a first switch, a second switch and a photovoltaic DC/DC converter, wherein one end of the photovoltaic DC/DC converter is connected with a photovoltaic array, and the other end of the photovoltaic DC/DC converter is connected with the battery energy management system layer; the battery energy management system layer is a master control center of the light storage and charging integrated layered coordination control system, except for acquiring first data information of the battery energy management system layer, second data information of the direct current charging and discharging pile layer is acquired through the first switch, third data information of the converter system layer is acquired through the second switch, the first data information, the second data information and the third data information are transmitted to the cloud platform server through the middle communication device, a control command of the cloud platform server can be received, and the control command is sent to the direct current charging and discharging pile layer and the converter system layer.
In the technical scheme, the light storage and charging integration adopts layered coordination control, namely a battery energy management system layer, a direct-current charging and discharging pile layer and a converter system layer are constructed, the battery energy management system layer serves as a master control center of the light storage and charging integration layered coordination control system, besides first data information of the battery energy management system layer is obtained, second data information of the direct-current charging and discharging pile layer is obtained through a first switch, third data information of the converter system layer is obtained through a second switch, the first data information, the second data information and the third data information are transmitted to a cloud platform server through an intermediate communication device by the battery energy management system layer, a control command of the cloud platform server can be received and sent to the direct-current charging and discharging pile layer and the converter system layer, cooperation control of the battery energy storage, the direct-current charging and discharging pile and a photovoltaic array is achieved, stable operation of the light storage and charging integration is coordinated, and reliability of the light storage and charging integration is improved.
Preferably, the battery energy management system layer comprises: the system comprises an energy management system EMS, M energy storage battery unit management systems BMS, a first DC/DC converter and a first communication bus, wherein the first DC/DC converter is connected with energy storage battery units; the energy management system EMS, the M energy storage battery unit management systems BMS and the first DC/DC converter are connected through a first communication bus to form an internal communication network of a battery energy management system layer; the energy management system EMS transmits real-time data of the energy storage battery units and the first DC/DC converter to the energy management system EMS, the energy management system EMS transmits the real-time data to the cloud platform server through the intermediate communication device, the cloud platform server transmits a scheduling instruction to the energy management system EMS through the intermediate communication device, wherein M represents a positive integer.
In the battery energy management system layer, each energy storage battery unit management system BMS of the M energy storage battery unit management systems BMS manages one energy storage battery unit through the first DC/DC converter, and through the first communication bus, the direct interaction of the energy storage battery unit and the first DC/DC converter is realized, which is beneficial for the first DC/DC converter to make relevant protection and control strategies according to the battery state.
Preferably, the energy management system EMS is connected to the first switch and the second switch respectively in an ethernet communication manner, and obtains the second data information of the dc charging and discharging pile layer for the battery energy management system layer through the first switch, and obtains the third data information of the converter system layer for the battery energy management system layer through the second switch.
Preferably, one end of the photovoltaic DC/DC converter is connected with the photovoltaic array, and the other end of the photovoltaic DC/DC converter is communicated with the first DC/DC converter through RS485 to receive a control command of the first DC/DC converter.
Preferably, the dc charging and discharging pile layer includes: the system comprises a direct-current charging and discharging pile, N charging and discharging terminals and a second communication bus, wherein the direct-current charging and discharging pile and the N charging and discharging terminals are connected with the second communication bus to form an internal communication network of a direct-current charging and discharging pile layer; the direct-current charging and discharging pile comprises a charging and discharging pile DC/DC module and a charging and discharging pile control device, and the charging and discharging pile control device controls and schedules charging and discharging of the electric automobile under any one charging and discharging terminal of the N charging and discharging terminals.
Preferably, the conversion system layer comprises a first AC/DC converter, a second AC/DC converter and a third communication bus, and the first AC/DC converter and the second AC/DC converter are connected with the third communication bus to form an internal communication network of the conversion system layer; and the third communication bus is connected with the first DC/DC converter and receives a control command of the first DC/DC converter.
Preferably, one end of the first AC/DC converter is connected to a 400V AC bus and an electricity consumption unit device through a main transformer, one end of the second AC/DC converter is connected to the 400V AC bus and the electricity consumption unit device through an auxiliary transformer, the other end of the first AC/DC converter and the other end of the second AC/DC converter are both connected to one side of a DC bus, the other side of the DC bus is respectively connected to a DC charging and discharging pile, the first DC/DC converter and a photovoltaic DC/DC converter, the DC charging and discharging pile is connected to N charging and discharging terminals, the first DC/DC converter is connected to M energy storage battery units, and the photovoltaic DC/DC converter is connected to a photovoltaic array.
The invention also provides a control strategy of the light storage and charging integrated layered coordination control system, wherein the control strategy is realized based on the light storage and charging integrated layered coordination control system and comprises an alternating current grid-connected mode control strategy and a direct current grid-disconnected mode control strategy, a 400 alternating current bus supplies power under the alternating current grid-connected mode control strategy, and the light storage and charging integrated layered coordination control system is provided with a first time interval T1, a second time interval T2, a third time interval T3, a fourth time interval T4, a fifth time interval T5 and a sixth time interval T6 according to the peak-valley condition of a power grid; under a direct-current off-grid mode control strategy, a 400 alternating-current bus is disconnected, a first DC/DC converter, a photovoltaic DC/DC converter and a direct-current charging and discharging pile of a light storage and charging integrated hierarchical coordination control system are connected with the direct-current bus together, a cloud platform server transmits a charging and discharging scheduling instruction to an energy management system EMS through an intermediate communication device, the energy management system EMS guides M energy storage battery units to supply power to the direct-current bus through the first DC/DC converter, the first AC/DC converter and a second AC/DC converter take power from the direct-current bus, power utilization unit equipment is supplied with power after electric energy inversion, photovoltaic array power generation and battery energy storage unit adjustment are carried out based on the control instruction of the first DC/DC converter, electric vehicles under N charging and discharging terminals are guided to charge and discharge, and according to the peak valley condition of a power grid, the light storage and charging integrated hierarchical coordination control system is provided with a seventh time interval T7, an eighth time interval T8, a ninth time interval T9 and a tenth time interval T10.
In the technical scheme, the light storage and charging integrated layered coordination control system coordinates light storage and charging to generate power by a photovoltaic array, a 400v alternating current bus commercial power and an energy storage battery unit are comprehensively regulated, a direct current charging and discharging pile guides an electric vehicle to be charged and discharged in order, the photovoltaic array is greatly influenced by weather conditions, the number of generating hours is limited, the fluctuation of generating power is large, the direct current bus voltage is dynamically regulated to ensure that the photovoltaic array can generate power preferentially, the photovoltaic array participates in peak clipping and valley filling of the power grid according to the principle of maximum power output, and the photovoltaic array operates according to an alternating current grid-connected mode and a direct current off-grid mode; and when the commercial power of the 400v alternating-current bus is abnormal, the light storage and charging integrated hierarchical coordination control system coordinate the light storage to serve as a back-up power for black start, and the local power grid load is driven.
Preferably, under an alternating current grid-connected mode control strategy, a first time interval T1 is a night time interval, the photovoltaic DC/DC converter is communicated with the first DC/DC converter through RS485, the photovoltaic DC/DC converter stops working after receiving a control instruction of the first DC/DC converter, the light storage and charging integrated hierarchical coordination control system obtains electricity from a 400V alternating current bus, the electricity is rectified into direct current through the first AD/DC converter, the electric automobiles under N charge and discharge terminals are charged through the direct current charge and discharge pile, M energy storage battery units are charged through the first DC/DC converter, and the voltage of the direct current bus is dynamically adjusted according to the voltage of the direct current side of the energy storage battery units;
a second time interval T2 is an morning time interval, the photovoltaic array works, the energy management system EMS sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array is subjected to voltage reduction through the photovoltaic DC/DC converter, is adjusted to be the current voltage of the direct current bus, generates electricity in a maximum power point output mode, and is inverted into 400V alternating current through the photovoltaic DC/DC converter and the first AC/DC converter to balance the load of the power grid;
a third time interval T3 is an afternoon time interval, the photovoltaic array works, the photovoltaic array and the direct-current charging and discharging pile participate in peak shaving, electric energy of the electric vehicle under the direct-current charging and discharging pile is transmitted to the direct-current bus through the direct-current charging and discharging pile, and power generation electric energy of the photovoltaic array and discharge electric energy of the electric vehicle are converted into 400V alternating current through the first AC/DC converter in an inverted mode;
a fourth time period T4 is an evening time period, the photovoltaic array is set to stop generating power, the energy management system EMS controls the energy storage battery unit to charge, the voltage of the direct current bus is dynamically adjusted according to the direct current voltage of the energy storage battery unit, electric energy is obtained from the 400V alternating current bus, and the electric energy is charged for the energy storage battery unit after passing through the main transformer, the first AC/DC converter and the first DC/DC converter;
a fifth time period T5 is a night time period, the photovoltaic array is set to stop generating electricity, the cloud platform server issues an operation instruction to an energy management system of a battery energy management system layer through the intermediate communication device, the energy management system controls the electric automobile under the energy storage battery unit and the direct-current charging and discharging pile to discharge to a power grid, and the electric automobile is conveyed to a direct-current bus and conveyed to a 400v alternating-current bus through the first AC/DC converter;
and a sixth time period T6 is a night time period, the photovoltaic array is set to stop generating power, the energy storage battery unit generates power, the power output by the first DC/DC converter is adjusted in real time according to the charging power required by the electric automobile, and the voltage of the direct-current bus is dynamically adjusted according to the direct-current voltage of the energy storage battery unit.
Preferably, under a direct-current off-grid mode control strategy, a seventh time interval T7 is an morning time interval, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array charges the electric vehicle through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric vehicle is not charged, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
an eighth time interval T8 is an afternoon time interval, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array charges the electric automobile through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric automobile is not charged, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
a ninth time period T9 is an evening time period, the photovoltaic array is set to be in a power generation stopping mode by the light storage and charging integrated layered coordination control system, the energy storage battery unit charges the electric vehicle through the first DC/DC converter and the direct current charging and discharging pile, and the direct current bus voltage is dynamically adjusted according to the direct current voltage of the energy storage battery unit;
and in a tenth time period T10, the photovoltaic array is set to be in a power generation stopping mode, the energy storage battery unit charges the electric vehicle sequentially through the first DC/DC converter and the direct-current charging and discharging pile, or the electric vehicle charges the energy storage battery unit through the direct-current charging and discharging pile, and the direct-current bus voltage is dynamically adjusted according to the direct-current voltage of the energy storage battery unit.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
(1) The invention provides a light storage and charging integrated layered coordination control system, which adopts layered coordination control, namely a battery energy management system layer, a direct current charging and discharging pile layer and a converter system layer are constructed, wherein the battery energy management system layer is used as a master control center of the light storage and charging integrated layered coordination control system, except for acquiring first data information of the battery energy management system layer, second data information of the direct current charging and discharging pile layer is acquired through a first switch, third data information of the converter system layer is acquired through a second switch, the battery energy management system layer transmits the first data information, the second data information and the third data information to a cloud platform server through an intermediate communication device, can receive control instructions of the cloud platform server and sends the control instructions to the direct current charging and discharging pile layer and the converter system layer, so that the cooperative control of a battery energy storage pile, a direct current charging and discharging pile and a photovoltaic array is realized, the stable operation of light storage and charging integration is coordinated, and the reliability of light storage and charging integration is improved.
(2) The invention provides a control strategy of a light storage and charging integrated layered coordination control system, which considers the characteristics of light, storage and charging, combines the light storage and charging integration with 400v alternating current bus commercial power to provide an alternating current grid-connected mode control strategy and a direct current off-grid mode control strategy, relieves the load pressure of a power grid, promotes the friendly interaction of 'power grid-user load', realizes the idea of peak clipping and valley filling, and utilizes the value of the light storage and charging integration to the maximum extent.
Drawings
Fig. 1 is a schematic structural diagram of a light storage and charging integrated hierarchical coordination control system proposed in an embodiment of the present invention;
fig. 2 shows a practical circuit structure diagram of an application of the light storage and charging integrated hierarchical coordination control system according to the embodiment of the present invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent;
for better illustration of the present embodiment, certain parts of the drawings may be omitted, enlarged or reduced, and do not represent actual dimensions;
it will be understood by those skilled in the art that certain descriptions of well-known structures in the drawings may be omitted.
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples.
Example 1
The structural schematic diagram of the light storage and charging integrated layered coordination control system shown in fig. 1, referring to fig. 1, includes: the system comprises a battery energy management system layer 1, a direct-current charging and discharging pile layer 2, a current transformation system layer 3, a cloud platform server, an intermediate communication device, a first exchanger, a second exchanger and a photovoltaic DC/DC converter, wherein one end of the photovoltaic DC/DC converter is connected with a photovoltaic array, and the other end of the photovoltaic DC/DC converter is connected with the battery energy management system layer 1; the battery energy management system layer 1 is a master control center of the light storage and charging integrated layered coordination control system, except for acquiring first data information of the battery energy management system layer 1, second data information of the direct current charging and discharging pile layer 2 is acquired through a first switch, third data information of the converter system layer 3 is acquired through a second switch, the battery energy management system layer 1 transmits the first data information, the second data information and the third data information to the cloud platform server through an intermediate communication device, can receive a control command of the cloud platform server, and sends the control command to the direct current charging and discharging pile layer 2 and the converter system layer 3, and in the embodiment, the intermediate communication device is a 4G router.
In the present embodiment, the battery energy management system layer 1 includes: the system comprises an energy management system EMS, M energy storage battery unit management systems BMS, a first DC/DC converter and a first communication bus, wherein the first communication bus is a CAN bus, the first DC/DC converter is connected with energy storage battery units, and each energy storage battery unit management system BMS in the M energy storage battery unit management systems BMS manages one energy storage battery unit through the first DC/DC converter; the energy management system EMS, the M energy storage battery unit management systems BMS and the first DC/DC converter are connected through a first communication bus to form an internal communication network of a battery energy management system layer 1; the energy management system EMS transmits real-time data of the energy storage battery units and the first DC/DC converter to the energy management system EMS, the energy management system EMS transmits the real-time data to the cloud platform server through the intermediate communication device, the cloud platform server transmits a scheduling instruction to the energy management system EMS through the intermediate communication device, wherein M represents a positive integer. In the battery energy management system layer 1, each energy storage battery unit management system BMS in the M energy storage battery unit management systems BMS manages one energy storage battery unit through the first DC/DC converter, and through the first communication bus, the direct interaction between the energy storage battery unit and the first DC/DC converter is realized, which is beneficial for the first DC/DC converter to make relevant protection and control strategies according to the battery state.
Referring to fig. 1, the energy management system EMS is connected to the first switch and the second switch respectively in an ethernet communication manner, and acquires the second data information of the dc charging and discharging pile layer 2 for the battery energy management system layer 1 through the first switch, and acquires the third data information of the converter system layer 3 for the battery energy management system layer 1 through the second switch. One end of the photovoltaic DC/DC converter is connected with the photovoltaic array, and the other end of the photovoltaic DC/DC converter is communicated with the first DC/DC converter through RS485 to receive a control command of the first DC/DC converter.
In this embodiment, the dc charging and discharging pile layer 2 includes: the system comprises a direct-current charging and discharging pile, N charging and discharging terminals and a second communication bus, wherein the second communication bus is also a CAN bus, and the direct-current charging and discharging pile and the N charging and discharging terminals are connected with the second communication bus to form an internal communication network of a direct-current charging and discharging pile layer 2; referring to fig. 1, the DC charging and discharging pile includes a charging and discharging pile DC/DC module and a charging and discharging pile control device, and the charging and discharging pile control device controls and schedules charging and discharging of the electric vehicle under any one of the N charging and discharging terminals.
In this embodiment, referring to fig. 1, the conversion system layer 3 includes a first AC/DC converter, a second AC/DC converter, and a third communication bus, where the third communication bus is also a CAN bus, and the first AC/DC converter and the second AC/DC converter are both connected to the third communication bus to form an internal communication network of the conversion system layer; the third communication bus is connected with the first DC/DC converter and receives a control command of the first DC/DC converter.
One end of the first AC/DC converter is connected with a 400V alternating current bus and power unit equipment through a main transformer, one end of the second AC/DC converter is connected with the 400V alternating current bus and the power unit equipment through an auxiliary transformer, in the embodiment, as shown in figure 2, the power unit equipment comprises a first circuit breaker 1QF, a second circuit breaker 2QF, a pre-charging resistor R1, a static switch STS, an air conditioner, a third circuit breaker K1, a fourth circuit breaker K2, a UPS and the like, and further comprises a 24V direct current power supply which can supply power for the light storage and charging integrated layered coordination control system, the other end of the first AC/DC converter and the other end of the second AC/DC converter are connected with one side of the direct current bus, the other side of the direct current bus is respectively connected with a direct current charging and discharging pile, the first DC/DC converter and a photovoltaic DC/DC converter, the direct current charging and discharging pile is connected with N charging and discharging terminals, the first DC/DC converter is connected with M energy storage battery units, and the photovoltaic DC/DC converter is connected with a photovoltaic array.
Based on the above light storage and charging integrated layered coordination control system, the invention also provides a control strategy of the light storage and charging integrated layered coordination control system, where the control strategy includes: under the control strategy of the alternating current grid-connected mode, a 400 alternating current bus in the circuit structure of fig. 2 is used as commercial power to supply power, wherein a main transformer is connected with a 400V alternating current bus through a first circuit breaker 1QF or a pre-charging resistor R1 and a second circuit breaker 2QF, the main transformer is connected with a first AC/DC converter through a third circuit breaker K1, a static switch STS is respectively connected with an air conditioner, an auxiliary transformer and a UPS, the auxiliary transformer is connected with a second AC/DC converter through a fourth circuit breaker K2, when the commercial power is normal, the second AC/DC converter supplies power for the UPS and the air conditioner through the static switch STS, and when the commercial power is abnormal, the static switch STS is disconnected, and the second AC/DC converter is reversely changed into the UPS, the air conditioner and the power supply from the direct current bus; the first AC/DC converter is a main grid-connected power conversion device, grid-connected power is realized by the device, and the direct-current bus voltage is stabilized under the grid-connected condition. The light storage and charging integrated layered coordination control system sets a first time period T1, a second time period T2, a third time period T3, a fourth time period T4, a fifth time period T5 and a sixth time period T6 according to the peak-valley condition of a power grid; under a direct-current off-grid mode control strategy, a 400 alternating-current bus is disconnected, a first DC/DC converter, a photovoltaic DC/DC converter and a direct-current charging and discharging pile of a light storage and charging integrated hierarchical coordination control system are connected with the direct-current bus together, a cloud platform server transmits a charging and discharging scheduling instruction to an energy management system EMS through an intermediate communication device, the energy management system EMS guides M energy storage battery units to supply power to the direct-current bus through the first DC/DC converter, the first AC/DC converter and a second AC/DC converter take power from the direct-current bus, power utilization unit equipment is supplied with power after electric energy inversion, photovoltaic array power generation and battery energy storage unit adjustment are carried out based on the control instruction of the first DC/DC converter, electric vehicles under N charging and discharging terminals are guided to charge and discharge, and according to the peak valley condition of a power grid, the light storage and charging integrated hierarchical coordination control system is provided with a seventh time interval T7, an eighth time interval T8, a ninth time interval T9 and a tenth time interval T10.
Under an alternating current grid-connected mode control strategy, a first time interval T1 is a night time interval, a photovoltaic DC/DC converter communicates with a first DC/DC converter through RS485 and receives a control instruction of the first DC/DC converter to stop working, a light storage and charging integrated hierarchical coordination control system obtains electricity from a 400V alternating current bus, the electricity is rectified into direct current through the first AD/DC converter and is used for charging electric automobiles under N charging and discharging terminals through direct current charging and discharging piles, M energy storage battery units are charged through the first DC/DC converter, and the voltage of the direct current bus is dynamically adjusted according to the voltage of the direct current side of the energy storage battery units;
a second time interval T2 is an morning time interval, the photovoltaic array works, the energy management system EMS sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array is subjected to voltage reduction through the photovoltaic DC/DC converter, is adjusted to be the current voltage of the direct current bus, generates electricity in a maximum power point output mode, and is inverted into 400V alternating current through the photovoltaic DC/DC converter and the first AC/DC converter to balance the load of the power grid;
a third time interval T3 is an afternoon time interval, the photovoltaic array works, the photovoltaic array and the direct-current charging and discharging pile participate in peak shaving, electric energy of the electric vehicle under the direct-current charging and discharging pile is transmitted to the direct-current bus through the direct-current charging and discharging pile, and power generation electric energy of the photovoltaic array and discharge electric energy of the electric vehicle are converted into 400V alternating current through the first AC/DC converter in an inverted mode;
a fourth time period T4 is an evening time period, the photovoltaic array is set to stop generating power, the energy management system EMS controls the energy storage battery unit to charge, the voltage of the direct current bus is dynamically adjusted according to the direct current voltage of the energy storage battery unit, electric energy is obtained from the 400V alternating current bus, and the electric energy is charged for the energy storage battery unit after passing through the main transformer, the first AC/DC converter and the first DC/DC converter;
a fifth time period T5 is a night time period, the photovoltaic array is set to stop generating electricity, the cloud platform server issues an operation instruction to an energy management system of a battery energy management system layer through the intermediate communication device, the energy management system controls the electric automobile under the energy storage battery unit and the direct-current charging and discharging pile to discharge to a power grid, and the electric automobile is conveyed to a direct-current bus and conveyed to a 400v alternating-current bus through the first AC/DC converter;
and a sixth time period T6 is a night time period, the photovoltaic array is set to stop generating power, the energy storage battery unit generates power, the power output by the first DC/DC converter is adjusted in real time according to the charging power required by the electric automobile, and the voltage of the direct-current bus is dynamically adjusted according to the direct-current voltage of the energy storage battery unit.
Under a direct-current off-grid mode control strategy, a seventh time interval T7 is an morning time interval, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter into a standby mode, the photovoltaic array charges the electric vehicle through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric vehicle does not charge, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
an eighth time interval T8 is an afternoon time interval, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array charges the electric automobile through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric automobile is not charged, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
a ninth time period T9 is an evening time period, the photovoltaic array is set to be in a power generation stopping mode by the light storage and charging integrated layered coordination control system, the energy storage battery unit charges the electric vehicle through the first DC/DC converter and the direct current charging and discharging pile, and the direct current bus voltage is dynamically adjusted according to the direct current voltage of the energy storage battery unit;
and in a tenth time period T10, the photovoltaic array is set to be in a power generation stopping mode, the energy storage battery unit charges the electric vehicle sequentially through the first DC/DC converter and the direct-current charging and discharging pile, or the electric vehicle charges the energy storage battery unit through the direct-current charging and discharging pile, and the direct-current bus voltage is dynamically adjusted according to the direct-current voltage of the energy storage battery unit.
The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent;
it should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (5)
1. A control strategy of a light storage and charging integrated layered coordination control system is characterized in that the control strategy is used for the light storage and charging integrated layered coordination control system, and the light storage and charging integrated layered coordination control system comprises: the system comprises a battery energy management system layer, a direct-current charging and discharging pile layer, a current conversion system layer, a cloud platform server, an intermediate communication device, a first switch, a second switch and a photovoltaic DC/DC converter, wherein one end of the photovoltaic DC/DC converter is connected with a photovoltaic array, and the other end of the photovoltaic DC/DC converter is connected with the battery energy management system layer; the battery energy management system layer is a master control center of the light storage and charging integrated layered coordination control system, obtains first data information of the battery energy management system layer, obtains second data information of a direct current charging and discharging pile layer through a first switch, obtains third data information of a variable flow system layer through a second switch, transmits the first data information, the second data information and the third data information to a cloud platform server through an intermediate communication device, can receive a control command of the cloud platform server, and sends the control command to the direct current charging and discharging pile layer and the variable flow system layer; the conversion system layer comprises a first AC/DC converter, a second AC/DC converter and a third communication bus, and the first AC/DC converter and the second AC/DC converter are connected with the third communication bus to form an internal communication network of the conversion system layer; the third communication bus is connected with the first DC/DC converter and receives a control instruction of the first DC/DC converter, one end of the first AC/DC converter is connected with a 400V alternating current bus and electricity utilization unit equipment through a main transformer, one end of the second AC/DC converter is connected with the 400V alternating current bus and the electricity utilization unit equipment through an auxiliary transformer, the other end of the first AC/DC converter and the other end of the second AC/DC converter are both connected with one side of a direct current bus, the other side of the direct current bus is respectively connected with a direct current charging and discharging pile, the first DC/DC converter and the photovoltaic DC/DC converter, the direct current charging and discharging pile is connected with N charging and discharging terminals, the first DC/DC converter is connected with M energy storage battery units, and the photovoltaic DC/DC converter is connected with a photovoltaic array;
the control strategy comprises an alternating current grid-connected mode control strategy and a direct current grid-disconnected mode control strategy, a 400V alternating current bus supplies power under the alternating current grid-connected mode control strategy, and the light storage and charging integrated layered coordination control system sets a first time period T1, a second time period T2, a third time period T3, a fourth time period T4, a fifth time period T5 and a sixth time period T6 according to the peak-valley condition of a power grid; under a direct current off-grid mode control strategy, a 400V alternating current bus is disconnected, a first DC/DC converter, a photovoltaic DC/DC converter and a direct current charging and discharging pile of a light storage and charging integrated layered coordination control system are connected with the direct current bus together, a cloud platform server transmits a charging and discharging scheduling instruction to an energy management system EMS through an intermediate communication device, the energy management system EMS guides M energy storage battery units to supply power for the direct current bus through the first DC/DC converter, the first AC/DC converter and a second AC/DC converter take power from the direct current bus, power utilization unit equipment is supplied with power after electric energy inversion, electric vehicles under N charging and discharging terminals are guided to charge and discharge based on the control instruction of the first DC/DC converter, photovoltaic array power generation and battery energy storage unit adjustment are carried out, and the light storage and charging integrated layered coordination control system is provided with a seventh time interval T7, an eighth time interval T8, a ninth time interval T9 and a tenth time interval T10 according to the peak-valley condition of a power grid;
under an alternating current grid-connected mode control strategy, a first time interval T1 is a night time interval, a photovoltaic DC/DC converter communicates with a first DC/DC converter through RS485 and receives a control instruction of the first DC/DC converter to stop working, a light storage and charging integrated hierarchical coordination control system obtains electricity from a 400V alternating current bus, the electricity is rectified into direct current through the first AD/DC converter and is used for charging electric automobiles under N charging and discharging terminals through direct current charging and discharging piles, M energy storage battery units are charged through the first DC/DC converter, and the voltage of the direct current bus is dynamically adjusted according to the voltage of the direct current side of the energy storage battery units;
a second time interval T2 is an morning time interval, the photovoltaic array works, the energy management system EMS sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array is subjected to voltage reduction through the photovoltaic DC/DC converter, is adjusted to be the current voltage of the direct current bus, generates electricity in a maximum power point output mode, and is inverted into 400V alternating current through the photovoltaic DC/DC converter and the first AC/DC converter to balance the load of the power grid;
a third time interval T3 is an afternoon time interval, the photovoltaic array works, the photovoltaic array and the direct-current charging and discharging pile participate in peak shaving, electric energy of the electric vehicle under the direct-current charging and discharging pile is transmitted to the direct-current bus through the direct-current charging and discharging pile, and power generation electric energy of the photovoltaic array and discharge electric energy of the electric vehicle are inverted into 400V alternating current through the first AC/DC converter;
a fourth time period T4 is an evening time period, the photovoltaic array is set to stop generating power, the energy management system EMS controls the energy storage battery unit to charge, the voltage of the direct current bus is dynamically adjusted according to the direct current voltage of the energy storage battery unit, electric energy is obtained from the 400V alternating current bus, and the electric energy is charged for the energy storage battery unit after passing through the main transformer, the first AC/DC converter and the first DC/DC converter;
a fifth time period T5 is a night time period, the photovoltaic array is set to stop generating power, the cloud platform server issues an operation instruction to an energy management system of the battery energy management system layer through the intermediate communication device, the energy management system controls the electric automobile under the energy storage battery unit and the direct-current charging and discharging pile to discharge to a power grid, and the electric automobile is conveyed to the direct-current bus and conveyed to the 400v alternating-current bus through the first AC/DC converter;
a sixth time interval T6 is a night time interval, the photovoltaic array is set to stop generating electricity, the energy storage battery unit generates electricity, the power output by the first DC/DC converter is adjusted in real time according to the charging power required by the electric automobile, and the direct-current bus voltage is dynamically adjusted according to the direct-current voltage of the energy storage battery unit;
under a direct-current off-grid mode control strategy, a seventh time interval T7 is an morning time interval, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array charges the electric automobile through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric automobile is not charged, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
an eighth time period T8 is an afternoon time period, the photovoltaic array works, the light storage and charging integrated layered coordination control system sets the energy storage battery unit and the first DC/DC converter to be in a standby mode, the photovoltaic array charges the electric automobile through the photovoltaic DC/DC converter and the direct-current charging and discharging pile, and when the electric automobile is not charged, the photovoltaic array charges the energy storage battery unit through the photovoltaic DC/DC converter and the first DC/DC converter;
a ninth time period T9 is an evening time period, the photovoltaic array is set to be in a power generation stopping mode by the light storage and charging integrated layered coordination control system, the energy storage battery unit charges the electric vehicle through the first DC/DC converter and the direct current charging and discharging pile, and the direct current bus voltage is dynamically adjusted according to the direct current voltage of the energy storage battery unit;
and in a tenth time period T10, the photovoltaic array is set to be in a power generation stopping mode, the energy storage battery unit charges the electric vehicle sequentially through the first DC/DC converter and the direct-current charging and discharging pile, or the electric vehicle charges the energy storage battery unit through the direct-current charging and discharging pile, and the direct-current bus voltage is dynamically adjusted according to the direct-current voltage of the energy storage battery unit.
2. The control strategy of the light storage and charging integrated layered coordination control system according to claim 1, wherein the battery energy management system layer comprises: the system comprises an energy management system EMS, M energy storage battery unit management systems BMS, a first DC/DC converter and a first communication bus, wherein the first DC/DC converter is connected with energy storage battery units; the energy management system EMS, the M energy storage battery unit management systems BMS and the first DC/DC converter are connected through a first communication bus to form an internal communication network of a battery energy management system layer; the energy management system EMS transmits real-time data of the energy storage battery units and the first DC/DC converter to the energy management system EMS, the energy management system EMS transmits the real-time data to the cloud platform server through the intermediate communication device, the cloud platform server transmits a scheduling instruction to the energy management system EMS through the intermediate communication device, wherein M represents a positive integer.
3. The control strategy of the light storage and charging integrated layered coordination control system according to claim 2, wherein the energy management system EMS is connected to the first switch and the second switch respectively in an ethernet communication manner, and acquires the second data information of the dc charging and discharging pile layer for the battery energy management system layer through the first switch and acquires the third data information of the converter system layer for the battery energy management system layer through the second switch.
4. The control strategy of the light storage and charging integrated layered coordination control system is characterized in that one end of the photovoltaic DC/DC converter is connected with the photovoltaic array, and the other end of the photovoltaic DC/DC converter is communicated with the first DC/DC converter through RS485 to receive a control command of the first DC/DC converter.
5. The control strategy of the light storage and charging integrated layered coordination control system according to claim 4, wherein the DC charging and discharging pile layer comprises: the system comprises a direct current charging and discharging pile, N charging and discharging terminals and a second communication bus, wherein the direct current charging and discharging pile and the N charging and discharging terminals are connected with the second communication bus to form an internal communication network of a direct current charging and discharging pile layer; the direct-current charging and discharging pile comprises a charging and discharging pile DC/DC module and a charging and discharging pile control device, and the charging and discharging pile control device controls and schedules charging and discharging of the electric automobile under any one charging and discharging terminal of the N charging and discharging terminals.
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| CN112926874A (en) * | 2021-03-23 | 2021-06-08 | 上海挚达科技发展有限公司 | Photovoltaic storage and storage integrated management platform |
| CN113541181A (en) * | 2021-06-07 | 2021-10-22 | 清华大学 | Multi-type electric vehicle cooperative power supply system |
| CN113489124B (en) * | 2021-06-11 | 2022-12-06 | 广西大学 | Distributed direct-current energy supply system integrating light, storage, charging and detection technologies and control method |
| CN113612244A (en) * | 2021-08-11 | 2021-11-05 | 国网浙江义乌市供电有限公司 | Energy efficient interaction method for light storage charging direct current bus |
| CN113858977A (en) * | 2021-11-16 | 2021-12-31 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Energy supply system |
| CN114954106A (en) * | 2022-04-15 | 2022-08-30 | 青岛华烁高科新能源技术有限公司 | Electric bicycle concentrated charging and battery replacing system with bidirectional energy transmission function |
| CN114977236A (en) * | 2022-06-27 | 2022-08-30 | 国网智慧能源交通技术创新中心(苏州)有限公司 | Optical storage charging system based on energy router, storage medium and optical storage charging station |
| CN115352311A (en) * | 2022-08-16 | 2022-11-18 | 一汽奔腾轿车有限公司 | Energy management method for optical storage charging and discharging battery changing system |
| CN115498621B (en) * | 2022-09-29 | 2024-04-26 | 杭州铂科电子有限公司 | Light stores up integrative device and system that fills |
| CN116316750A (en) * | 2023-02-08 | 2023-06-23 | 中建科工集团有限公司 | Light storage regulation and control method and system |
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