CN112421695B - Edge-computing-based wind-solar energy storage AGC/AVC coordination control system and method - Google Patents

Edge-computing-based wind-solar energy storage AGC/AVC coordination control system and method Download PDF

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CN112421695B
CN112421695B CN202011372559.9A CN202011372559A CN112421695B CN 112421695 B CN112421695 B CN 112421695B CN 202011372559 A CN202011372559 A CN 202011372559A CN 112421695 B CN112421695 B CN 112421695B
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control
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CN112421695A (en
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刘太华
薛毅
李鹏涛
王信昌
张晓彦
郝栋梁
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Beijing Agent Devote Power Technology Dev Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/48—Controlling the sharing of the in-phase component
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
    • H02J3/50—Controlling the sharing of the out-of-phase component
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects

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Abstract

The invention discloses a wind-solar energy storage AGC/AVC coordination control system and a method based on edge calculation, wherein the system comprises a main control station edge calculation intelligent terminal based on a new energy power station control room and a sub-control station edge calculation intelligent terminal based on a photovoltaic power station, a wind power station and an energy storage power station, wherein the main control station and the sub-control station form an Ethernet for connection through optical fibers; the method is characterized in that: the edge-calculation-based wind-solar energy storage AGC/AVC coordinated control system changes the structure of a new energy power station, configures an energy storage power station with a certain capacity, and enables the energy storage power station to participate in automatic power generation and automatic voltage regulation control; the method comprises the following steps: receiving a power dispatching instruction, main station data acquisition, grid-connected active power and network point voltage; analyzing whether the dispatching command is active or reactive/voltage; if the scheduling command is active, the AGC control system is started to control; and if the scheduling command is reactive/voltage, entering the AVC control system for control. The invention changes the structure of the new energy power station.

Description

Wind-solar energy storage AGC/AVC coordination control system and method based on edge calculation
Technical Field
The invention belongs to the technical field of automatic power generation and automatic voltage control of a new energy power station, and particularly relates to a wind-solar-energy-storage AGC/AVC coordinated control system and method based on edge calculation.
Background
Global climate change, energy conservation and emission reduction, and adjustment of energy supply and utilization structures are major trends. The energy supply mainly takes renewable energy, namely wind power photovoltaic power generation as a main form, but the wind power photovoltaic power generation has randomness and is closely related to climatic conditions. High-proportion new forms of energy electricity generation merges the electric wire netting, and electric wire netting dispatch, safe and stable operation face huge technical challenge, how to become nimble adjustable, economic efficiency is very high power station with new forms of energy power station configuration energy storage power station or an area new forms of energy power station combination, and the configuration certain capacity energy storage power station is imperative. However, after the energy storage is added, the structure of the new energy power station is changed, and the existing AGC/AVC control system of the new energy power station does not consider the participation of the energy storage power station in control and cannot completely meet the requirements, so that the energy storage power station needs to participate in automatic power generation and automatic voltage regulation control, but the problem of coordination control exists, and the characteristics and the matching problems of different power generation equipment need to be comprehensively considered.
Disclosure of Invention
The invention provides a wind-solar energy storage AGC/AVC coordinated control system and method based on edge calculation, which aims to solve the problems that the structure of a new energy power station is changed, and the problems that the existing new energy power station AGC/AVC control system mainly adopts renewable energy, namely wind power photovoltaic power generation, as the coordinated control problem exists, the energy supply of the existing new energy power station AGC/AVC control system cannot enable an energy storage power station to participate in automatic power generation and automatic voltage regulation control, and cannot completely meet the requirements are solved.
In order to solve the technical problem, the invention provides the following technical scheme:
a wind-solar energy storage AGC/AVC coordinated control system based on edge calculation comprises a main control station edge calculation intelligent terminal based on a new energy power station control room and a sub-control station edge calculation intelligent terminal based on a photovoltaic power station, a wind power station and an energy storage power station, wherein the main control station edge calculation intelligent terminal comprises edge calculation platform software and a main station edge calculation control system, and the sub-control station edge calculation intelligent terminal comprises edge calculation platform software and a sub-station edge calculation control system; the main control station and the sub control stations form an Ethernet for connection through optical fibers; the method is characterized in that:
the edge-computing-based wind-solar energy storage AGC/AVC coordinated control system changes the structure of a new energy power station, configures a certain-capacity energy storage power station, and enables the energy storage power station to participate in automatic power generation and automatic voltage regulation control.
The master edge computing control system comprises: the system comprises a grid-connected active power and network point voltage module, a main station data acquisition module, a power scheduling command module, a receiving substation information module and a calculation and optimization distribution module; the receiving substation information module comprises receiving substation control command return values including active values, passive values and voltage values. The receiving substation information module comprises an active power, capacity, equipment running state, energy storage battery SOC data information and the like which are sent to the main station by the receiving substation, and then the information is sent to the main station to calculate and optimize the distribution module; the master station recalculation and re-optimization distribution module integrates information provided by the grid-connected active power and network point voltage module, the master station data acquisition module, the power scheduling command module and the receiving substation information module, controls the AGC automatic power generation system and the AVC automatic voltage system by utilizing the edge calculation characteristics, and distributes the information to the wind power substation, the photovoltaic substation and the energy storage substation according to priority.
The substation edge computing control system comprises: the system comprises a master station command receiving module, a substation data acquisition module, a substation recalculation and redistribution module and an execution result sending master station module; the data acquisition module acquires information of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment and sends the information to the main station to calculate and optimize the distribution module again; the substation recalculation and redistribution module receives the master station command and the information of the data acquisition module, recalculates and redistributes the master station command by utilizing edge calculation, distributes active power or reactive power according to equal proportion or equal increment, and sends the active power or reactive power to the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive power compensation equipment for execution; and the execution result sending module sends the execution results of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment to a receiving substation information module of the main station edge computing control system.
The master station data acquisition module acquires the super short-term 5-minute prediction data of the wind power prediction system and the light power prediction system; active data in 5 minutes of wind power and active data in 5 minutes of photovoltaic power generation are collected; collecting SOC data of an energy storage power station, collecting load state data of the energy storage power station, collecting SVG reactive capacity data, and collecting active and grid-connected point voltage data of a grid-connected point of an integrated automation system; the power dispatching command module issues an active power dispatching command or a reactive power dispatching command, if the active power dispatching command is received, the power dispatching command is switched to an AGC automatic power generation control system to be executed, and the reactive power dispatching command is switched to an AVC control system to be executed; and the receiving substation information module receives the execution result data of each substation and monitors the active power and the voltage of the grid-connected point, whether the active power, the voltage precision and the coordination control time of the grid-connected point meet the requirements of scheduling and specification or not, and if not, recalculating, distributing and executing according to new conditions until the requirements of scheduling instructions, time, precision and specification are met.
The AGC automatic generating system is controlled as follows: the main station edge computing intelligent control terminal distributes results to the wind power substation, the photovoltaic substation and the energy storage substation according to preset priorities according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment operation conditions, photovoltaic power generation equipment operation conditions, energy storage power station operation conditions and scheduling instructions; the AVC automatic voltage system is controlled as follows: and the main station edge computing intelligent control terminal distributes results to the fan, the photovoltaic power station, the energy storage power station substation and the SVG equipment according to preset priority according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment running conditions, photovoltaic power generation equipment running conditions, energy storage power station running conditions, SVG equipment running conditions and scheduling instructions.
The photovoltaic substation is a photovoltaic substation edge calculation intelligent terminal which is connected with the photovoltaic inverter; the wind power substation is an edge calculation intelligent terminal of the wind power substation, and the edge calculation intelligent terminal of the wind power substation is connected with a fan energy management control system; the energy storage substation is an energy storage substation edge calculation intelligent terminal which is connected with an energy storage power station EMS system and SVG reactive power compensation equipment.
A new energy AGC/AVC coordination control method is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps of firstly, receiving a power dispatching instruction, collecting main station data, and connecting grid active power and network point voltage;
analyzing whether the scheduling command is active or reactive/voltage;
step three, if the scheduling command is active, the AGC control system is started to control;
and step four, if the scheduling instruction is reactive/voltage, entering the AVC control system for control.
The third step comprises the following specific processes:
Figure 100002_DEST_PATH_IMAGE001
the master station calculates by utilizing the edge calculation characteristics and distributes the calculation result to the substation according to the priority;
Figure 12963DEST_PATH_IMAGE002
the substation receives and executes the instruction of the main station; the substations are a wind power substation, a photovoltaic substation and an energy storage substation;
Figure 100002_DEST_PATH_IMAGE003
the sub-station executes whether the result meets the adjusting value or the adjusting curve, if not, the process is returned
Figure 165727DEST_PATH_IMAGE001
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure 661430DEST_PATH_IMAGE004
；
Figure 220325DEST_PATH_IMAGE004
If the time exceeds the set time range, if not, the process returns
Figure 383454DEST_PATH_IMAGE001
If yes, the process is ended.
The fourth step comprises the following specific processes:
Figure 503856DEST_PATH_IMAGE001
the main station calculates by utilizing the edge calculation characteristics and distributes the calculation result to the sub-stations according to the priority;
Figure 18014DEST_PATH_IMAGE002
the substation receives and executes the instruction of the main station; the substations are a wind power substation, a photovoltaic substation, an energy storage substation and an SVG control device;
Figure 882065DEST_PATH_IMAGE003
the sub-station executes whether the result meets the adjusting value or the adjusting curve, if not, the process is returned
Figure 634120DEST_PATH_IMAGE001
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure 191004DEST_PATH_IMAGE004
；
Figure 165694DEST_PATH_IMAGE004
If the time exceeds the set time range, if not, the process returns
Figure 833436DEST_PATH_IMAGE001
If yes, the process is ended.
Advantageous effects of the invention
1. The invention allocates an energy storage power station in a new energy power station, receives information comprising energy storage substations through a main station edge calculation control system, calculates and allocates the energy storage substations according to priorities by a main station recalculation and re-optimization allocation module, recalculates and allocates the energy storage substations by a re-calculation and re-allocation module of a substation edge calculation control system, acquires data comprising the energy storage substations by a substation data acquisition module, transmits an execution result comprising the energy storage substations to the main station by a substation execution result transmitting module, the new energy power station is possible to be configured with an energy storage power station with a certain capacity, after the energy storage power station is added, the structure of the new energy power station is changed, the energy storage power station participates in AGC automatic power generation control and AVC automatic voltage control of the new energy power station, wind-solar energy storage automatic power generation and automatic voltage adjustment coordinated control are realized, and the requirements of active power control and voltage control of a power grid are met.
2. The invention applies the edge computing software platform to the new energy for the first time to realize AGC/AVC coordination control; an automatic generation control system (AGC)/automatic voltage regulation (AVC) is integrated into an edge computing intelligent terminal by utilizing an edge computing container technology and a virtual technology; establishing a new energy station AGC/AVC hierarchical control system by utilizing the advantages of light algorithm and quick calculation of the edge calculation terminal, approaching to the equipment terminal and having good real-time performance; setting a priority execution sequence of the scheduling commands according to the characteristics of the power generation equipment, the operating characteristics and the like; the method introduces the power prediction ultra-short term prediction data into a coordinated control system for the first time.
Drawings
FIG. 1 is a schematic diagram of a double-layer architecture of a main station and a substation edge computing terminal according to the present invention;
FIG. 2 is a block diagram of a master station control system according to the present invention;
FIG. 3 is a diagram of a substation control system according to the present invention;
FIG. 4 is a diagram of an AGC/AVC coordinated control system of the new energy power station;
FIG. 5 is a diagram of the new energy AGC/AVC coordination control program of the invention.
Detailed Description
Design principle of the invention
1. And solving the problem of wind-solar energy storage AGC/AVC coordination control by utilizing the edge calculation characteristics. The wind-solar energy storage is characterized in that an energy storage power station is added on the basis of the existing wind-electricity photovoltaic power generation as a main form, and the energy storage power station participates in automatic generation AGC and automatic voltage regulation AVC control, wherein the coordination control is coordination control between a main station and a sub-station, coordination control between AGC and AVC, coordination control between modules of the main station and coordination control between modules of the sub-station.
And solving the coordination control problem by utilizing the edge calculation characteristic. The invention particularly benefits from container and virtual technology of edge computing, wherein the container and virtual technology means that one computer is virtualized into a plurality of computers through the virtualization technology, a plurality of logic computers are simultaneously operated on the same computer, each logic computer can operate different operating systems, and application programs can operate in mutually independent spaces without mutual influence, so that the working efficiency of the computer is obviously improved.
The invention utilizes the virtual technology of edge calculation to integrate an automatic generation control system (AGC)/automatic voltage regulation (AVC) into the same edge calculation intelligent terminal: the method specifically comprises the steps that two computers are virtualized in the same edge computing intelligent terminal, and an automatic generation control system (AGC) and an automatic voltage regulation system (AVC) are respectively operated; the invention utilizes the container technology of edge calculation to ensure that each module of the main station and each module of the substation comprise a grid-connected active power and network point voltage module, a main station data acquisition module, an electric power scheduling command module, a substation receiving information module, a main station recalculation and re-optimization distribution module, a main station receiving command module, an execution result sending module, a substation data acquisition module and a substation recalculation and re-distribution module, and application programs of the modules can run in mutually independent containers or spaces respectively through the container technology without mutual influence, thereby obviously improving the working efficiency of a computer. In conclusion, the invention utilizes the virtual technology and the container technology of the edge calculation to solve the problem of coordination control of the wind-solar energy storage AGC/AVC.
2. The invention is also beneficial to the edge computing terminal which has the advantages of light weight algorithm and quick computation, is close to the equipment terminal, has good real-time performance, and establishes a new energy station AGC/AVC hierarchical control system
Based on the principle, the invention designs an edge-computing-based wind-solar-energy-storage AGC/AVC coordination control system, which comprises a main control station edge computing intelligent terminal based on a new energy power station control room and a sub-control station edge computing intelligent terminal based on a photovoltaic power station, a wind power station and an energy storage power station, wherein the main control station edge computing intelligent terminal comprises edge computing platform software and a main station edge computing control system, and the sub-control station edge computing intelligent terminal comprises edge computing platform software and a sub-station edge computing control system; the main control station and the sub-stations form an Ethernet for connection through optical fibers; the method is characterized in that:
the edge-computing-based wind-solar energy storage AGC/AVC coordinated control system changes the structure of a new energy power station, configures an energy storage power station with a certain capacity, and enables the energy storage power station to participate in automatic power generation and automatic voltage regulation control.
Supplementary explanation:
the hardware technical scheme of the invention adopts a four-core Cortex-A53 architecture, and has serial port, industrial Ethernet and 4G/5G communication of an Internet of things card. The control main station is connected with the substation through the Ethernet, the main station receives a scheduling instruction, active power and voltage data of a grid-connected point are collected, ultra-short-term data of power prediction and energy storage power station SOC data are collected, and a software platform adopts an open edge computing platform based on linux EdgeX Foundation.
The master edge computing control system comprises: the system comprises a grid-connected active power and network point voltage module, a master station data acquisition module, a power scheduling command module, a receiving substation information module and a calculation and optimization distribution module; the receiving substation information module comprises receiving substation control command return values including active values, passive values and voltage values; the receiving substation information module comprises an active power, capacity, equipment running state, energy storage battery SOC data information and the like which are sent to the main station by the receiving substation, and then the information is sent to the main station to calculate and optimize the distribution module; the main station recalculation and re-optimization allocation module integrates the information provided by the grid-connected active power and network point voltage module, the main station data acquisition module, the power scheduling command module and the receiving substation information module, controls the AGC automatic power generation system and the AVC automatic voltage system by utilizing the edge calculation characteristics, and allocates the information to the wind power substation, the photovoltaic substation and the energy storage substation according to the priority.
The substation edge calculation control system comprises: the substation recalculation and redistribution module is used for performing recalculation and redistribution on the substation data; the data acquisition module acquires information of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment and sends the information to the main station to calculate and optimize the distribution module again; the substation recalculation and redistribution module receives the master station command and the information of the data acquisition module, recalculates and redistributes the master station command by utilizing edge calculation, distributes active power or reactive power according to equal proportion or equal increment, and sends the active power or reactive power to the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive power compensation equipment for execution; and the execution result sending module sends the execution results of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment to a receiving substation information module of the main station edge computing control system.
The master station data acquisition module acquires the super short-term 5-minute prediction data of the wind power prediction system and the light power prediction system; active data in 5 minutes of wind power and active data in 5 minutes of photovoltaic power generation are collected; collecting SOC data of an energy storage power station, collecting load state data of the energy storage power station, collecting SVG reactive capacity data, and collecting active and grid-connected point voltage data of a grid-connected point of an integrated automation system; the power dispatching command module issues an active power dispatching command or a reactive power dispatching command, if the active power dispatching command is received, the power dispatching command is switched to an AGC automatic power generation control system to be executed, and the reactive power dispatching command is switched to an AVC control system to be executed; and the receiving substation information module receives the execution result data of each substation and monitors the active power and the voltage of the grid-connected point, whether the active power, the voltage precision and the coordination control time of the grid-connected point meet the requirements of scheduling and specification or not, and if not, recalculating, distributing and executing according to new conditions until the requirements of scheduling instructions, time, precision and specification are met.
Supplementary explanation:
the ultra-short term power prediction data is mainly the power generation boundary value of the new energy power station which is known in the AGC/AVC adjusting process, the accuracy of the power prediction ultra-short term prediction data is over 90 percent, and the ultra-short term power prediction data shows that the ultra-short term power prediction data has good correlation with the actual power generation of the new energy power station.
The SOC of the storage battery of the energy storage power station is convenient for accurately knowing the charging and discharging states of the battery of the energy storage power station, so that the adjustable capacity of the battery is known, and adjustable boundary conditions are provided for an AGC/AVC system.
SVG reactive capacity, providing an adjustable reactive capacity boundary value of an AVC system;
and carrying out optimization judgment and distribution according to the power predicted value, the battery capacity of the energy storage power station, the SVG capacity and the scheduling command value.
The active value, the voltage value and the reactive value of the grid-connected point are mainly used for controlling the qualification of an AGC/AVC coordinated control system and whether the requirements of power grid dispatching control indexes are met.
The AGC automatic generating system is controlled as follows: the main station edge computing intelligent control terminal distributes results to the wind power substation, the photovoltaic substation and the energy storage substation according to preset priorities according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment operation conditions, photovoltaic power generation equipment operation conditions, energy storage power station operation conditions and scheduling instructions; the AVC automatic voltage system is controlled as follows: and the main station edge computing intelligent control terminal distributes the result to a fan, a photovoltaic power station, an energy storage power station substation and SVG equipment according to preset priority according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment operation conditions, photovoltaic power generation equipment operation conditions, energy storage power station operation conditions, SVG equipment operation conditions and scheduling instructions.
The photovoltaic substation is a photovoltaic substation edge calculation intelligent terminal which is connected with the photovoltaic inverter; the wind power substation is an edge calculation intelligent terminal of the wind power substation, and the edge calculation intelligent terminal of the wind power substation is connected with a fan energy management control system; the energy storage substation is an energy storage substation edge calculation intelligent terminal which is connected with an energy storage power station EMS system and SVG reactive power compensation equipment.
A new energy AGC/AVC coordination control method is characterized in that: the method comprises the following steps:
the method comprises the following steps of firstly, receiving a power dispatching instruction, acquiring master station data, and connecting grid active power and grid voltage;
step two, analyzing whether the dispatching command is active or reactive/voltage;
step three, if the scheduling command is active, the AGC control system is started to control;
the specific process is as follows:
Figure 705577DEST_PATH_IMAGE001
the master station performs calculation by utilizing the characteristics of edge calculationDistributing the calculation result to the substation according to the priority;
Figure 167782DEST_PATH_IMAGE002
the substation receives and executes the instruction of the main station; the substations are a wind power substation, a photovoltaic substation and an energy storage substation;
Figure 390953DEST_PATH_IMAGE003
the substation executes whether the result meets the adjustment value or the adjustment curve, if not, the process is returned
Figure 596806DEST_PATH_IMAGE001
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure 323454DEST_PATH_IMAGE004
；
Figure 720675DEST_PATH_IMAGE004
If the time range is exceeded, if the time range is not exceeded, returning to the process
Figure 165563DEST_PATH_IMAGE001
If yes, the process is ended.
And step four, if the scheduling instruction is reactive/voltage, entering the AVC control system for control.
The specific process is as follows:
Figure 909528DEST_PATH_IMAGE001
the main station calculates by utilizing the edge calculation characteristics and distributes the calculation result to the sub-stations according to the priority;
Figure 756261DEST_PATH_IMAGE002
the substation receives and executes the instruction of the main station; the substation is a wind power substation, a photovoltaic substation, an energy storage substation and an SVG controllerA device;
Figure 560269DEST_PATH_IMAGE003
the substation executes whether the result meets the adjustment value or the adjustment curve, if not, the process is returned
Figure 758032DEST_PATH_IMAGE001
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure 305688DEST_PATH_IMAGE004
；
Figure 505463DEST_PATH_IMAGE004
If the time exceeds the set time range, if not, returning to the process
Figure 480372DEST_PATH_IMAGE001
If yes, the process is ended.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims (8)

1. A wind-solar energy storage AGC/AVC coordinated control system based on edge calculation comprises a main control station edge calculation intelligent terminal based on a new energy power station control room and a sub-control station edge calculation intelligent terminal based on a photovoltaic power station, a wind power station and an energy storage power station, wherein the main control station edge calculation intelligent terminal comprises edge calculation platform software and a main station edge calculation control system, and the sub-control station edge calculation intelligent terminal comprises edge calculation platform software and a sub-station edge calculation control system; the main control station and the sub control stations form an Ethernet for connection through optical fibers; the method is characterized in that:
the edge-calculation-based wind-solar energy storage AGC/AVC coordinated control system changes the structure of a new energy power station, and configures an energy storage power station with a certain capacity to enable the energy storage power station to participate in automatic power generation and automatic voltage regulation control;
the master edge computing control system comprises: the system comprises a grid-connected active power and network point voltage module, a main station data acquisition module, a power scheduling command module, a receiving substation information module and a calculation and optimization distribution module; the receiving substation information module comprises receiving substation control command return values including active values, passive values and voltage values; the receiving substation information module comprises an active power, capacity, equipment running state and energy storage battery SOC data information which are sent to the main station by the receiving substation, and then the information is sent to the main station to be calculated and then optimized and distributed; the main station recalculation and re-optimization allocation module integrates the information provided by the grid-connected active power and network point voltage module, the main station data acquisition module, the power scheduling command module and the receiving substation information module, controls the AGC automatic power generation system and the AVC automatic voltage system by utilizing the edge calculation characteristics, and allocates the information to the wind power substation, the photovoltaic substation and the energy storage substation according to the priority.
2. The edge-based computing wind-photovoltaic-storage AGC/AVC coordination control system according to claim 1, wherein: the substation edge computing control system comprises: the system comprises a master station command receiving module, a substation data acquisition module, a substation recalculation and redistribution module and an execution result sending master station module; the data acquisition module acquires information of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment and sends the information to the main station to calculate the redistribution module; the substation recalculation and redistribution module receives the master station command and the information of the data acquisition module, recalculates and redistributes the master station command by utilizing edge calculation, distributes active power or reactive power according to equal proportion or equal increment, and sends the active power or reactive power to the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive power compensation equipment for execution; and the execution result sending module sends the execution results of the wind power substation, the photovoltaic substation, the energy storage substation and the SVG reactive compensation equipment to a receiving substation information module of the main station edge computing control system.
3. The edge-based computing wind-photovoltaic-storage AGC/AVC coordination control system according to claim 1, wherein: the master station data acquisition module acquires 5-minute ultra-short-term forecast data of a wind power forecast system and a light power forecast system; active data in 5 minutes of wind power and active data in 5 minutes of photovoltaic power generation are collected; collecting SOC data of an energy storage power station, collecting load state data of the energy storage power station, collecting SVG reactive capacity data, and collecting active and grid-connected point voltage data of a grid-connected point of an integrated automation system; the power dispatching command module issues an active power dispatching command or a reactive power dispatching command, if the active power dispatching command is received, the power dispatching command is switched to an AGC automatic power generation control system to be executed, and the reactive power dispatching command is switched to an AVC control system to be executed; and the receiving substation information module receives the execution result data of each substation and monitors the active power and the voltage of the grid-connected point, whether the active power, the voltage precision and the coordination control time of the grid-connected point meet the requirements of scheduling and specification or not, and if not, recalculating, distributing and executing according to new conditions until the requirements of scheduling instructions, time, precision and specification are met.
4. The edge-based computing wind-photovoltaic-storage AGC/AVC coordination control system according to claim 1, wherein: the AGC automatic generating system is controlled as follows: the main station edge computing intelligent control terminal distributes results to the wind power substation, the photovoltaic substation and the energy storage substation according to preset priorities according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment operation conditions, photovoltaic power generation equipment operation conditions, energy storage power station operation conditions and scheduling instructions; the AVC automatic voltage system is controlled as follows: and the main station edge computing intelligent control terminal distributes results to the fan, the photovoltaic power station, the energy storage power station substation and the SVG equipment according to preset priority according to power prediction ultra-short-term data, energy storage power station SOC data, wind power generation equipment running conditions, photovoltaic power generation equipment running conditions, energy storage power station running conditions, SVG equipment running conditions and scheduling instructions.
5. The edge-based computing wind-photovoltaic-storage AGC/AVC coordination control system according to claim 1, wherein: the photovoltaic substation is a photovoltaic substation edge calculation intelligent terminal which is connected with the photovoltaic inverter; the wind power substation is an edge calculation intelligent terminal of the wind power substation, and the edge calculation intelligent terminal of the wind power substation is connected with a fan energy management control system; the energy storage substation is an energy storage substation edge calculation intelligent terminal which is connected with an energy storage power station EMS system and SVG reactive power compensation equipment.
6. A new energy AGC/AVC coordination control method based on any one of claims 1-5 and based on an edge computing wind-solar energy AGC/AVC coordination control system, characterized in that: the method comprises the following steps:
the method comprises the following steps of firstly, receiving a power dispatching instruction, collecting main station data, and connecting grid active power and network point voltage;
step two, analyzing whether the dispatching command is active or reactive/voltage;
step three, if the scheduling command is active, the AGC control system is started to control;
and step four, if the scheduling instruction is reactive/voltage, entering the AVC control system for control.
7. The new energy AGC/AVC coordination control method according to claim 6, characterized in that: the third step comprises the following specific processes:
Figure DEST_PATH_IMAGE001
the master station calculates by utilizing the edge calculation characteristics and distributes the calculation result to the substation according to the priority;
Figure 191082DEST_PATH_IMAGE002
the substation receives and executes the instruction of the main station; the substations are wind power substation, photovoltaic substation and storage substationAn energy substation;
Figure DEST_PATH_IMAGE003
the sub-station executes whether the result meets the adjusting value or the adjusting curve, if not, the process is returned
Figure 639381DEST_PATH_IMAGE001
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure 419118DEST_PATH_IMAGE004
；
Figure 486431DEST_PATH_IMAGE004
If the time exceeds the set time range, if not, the process returns
Figure 723640DEST_PATH_IMAGE001
If yes, the process is ended.
8. The new energy AGC/AVC coordination control method according to claim 6, wherein: the fourth step comprises the following specific processes:
Figure 546102DEST_PATH_IMAGE006
the main station calculates by utilizing the edge calculation characteristics and distributes the calculation result to the sub-stations according to the priority;
Figure 344294DEST_PATH_IMAGE008
the substation receives and executes the instruction of the main station; the substations are a wind power substation, a photovoltaic substation, an energy storage substation and an SVG control device;
Figure DEST_PATH_IMAGE010
the sub-station executes whether the result meets the adjusting value or the adjusting curve, if not, the process is returned
Figure 543194DEST_PATH_IMAGE006
If the execution result satisfies the adjustment value or the adjustment curve, the process is continued
Figure DEST_PATH_IMAGE012
；
Figure 884177DEST_PATH_IMAGE012
If the time range is exceeded, if not, returning to the process
Figure 408699DEST_PATH_IMAGE006
If yes, the process is ended.
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