CN116404680A - Rapid coordination control method and system for large-scale energy storage transformer substation - Google Patents
Rapid coordination control method and system for large-scale energy storage transformer substation Download PDFInfo
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Abstract
The invention discloses a rapid coordination control method and a rapid coordination control system for a large-scale energy storage transformer substation, wherein the rapid coordination control method comprises the steps of adopting a dispatching master station and a coordination controller to realize transient control of an energy storage converter PCS of each energy storage transformer substation in the large-scale energy storage transformer substation, and comprises the steps of primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and active power mapping function aiming at each primary frequency modulation control object, and controls the working state of the PCS of the energy storage converter based on the determined active power by utilizing the coordination controller. According to the invention, through centralized coordination control of all the PCS of the energy storage converters, the performance of the energy storage power station in primary frequency modulation and other aspects is improved, unified and rapid coordination control of the PCS of the total station energy storage converters is realized, and safe and stable operation of a power grid is ensured.
Description
Technical Field
The invention belongs to the field of energy storage substations, and particularly relates to a rapid coordination control method and system for a large-scale energy storage substation.
Background
In recent years, the construction of large-scale energy storage power stations has been gradually developed, and energy storage power stations of several tens megawatts or even larger scale have emerged. The number of energy storage converters (PCS) of these energy storage power stations is typically tens or even hundreds. The problem of coordinated control arises from the simultaneous arrangement of so many battery packs and PCS within the same power station. In addition, due to the limitations of the traditional AGC/AVC control strategy and communication modes, the regulation of the energy storage power station can only meet the active and reactive second-level regulation under the steady state condition, and the rapid response required by the system when the fluctuation occurs can not be met far.
Disclosure of Invention
The invention aims to solve the technical problems: aiming at the problems in the prior art, the invention provides a rapid coordination control method and a rapid coordination control system for a large-scale energy storage transformer substation.
In order to solve the technical problems, the invention adopts the following technical scheme:
the fast coordination control method for the large-scale energy storage transformer substations comprises the steps of adopting a dispatching master station and a coordination controller to realize transient control of the energy storage converter PCS aiming at the energy storage converter PCS of each energy storage transformer substation in the large-scale energy storage transformer substations, wherein the transient control comprises the steps of primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage transformer substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and active power mapping function for each primary frequency modulation control object, and utilizes the coordination controller to control the working state of the PCS of the energy storage transformer based on the determined active power so as to realize sagging control of the primary frequency modulation control object, so that the grid-connected point of each energy storage transformer substation participates in the primary frequency modulation of the power grid based on the determined active power.
Optionally, the frequency and active power mapping function is a broken line function, and the broken line function includes mapping relations between different frequency ranges and corresponding active powers.
Optionally, the controlling, by the coordination controller, the operation state of the PCS further includes: monitoring a primary frequency modulation entering test signal and a primary frequency modulation exiting test signal sent by a dispatching master station, if the primary frequency modulation entering test signal sent by the dispatching master station is monitored, firstly suspending a coordination controller to control the working state of an energy storage converter PCS based on the determined active power so that the primary frequency modulation is switched to a test mode, a grid connection point does not participate in primary frequency modulation of a power grid, then monitoring a test instruction sent by the dispatching master station, executing remote test on the energy storage station according to the test instruction after receiving the test instruction, and returning the result of the remote test to the dispatching master station; if the primary frequency modulation exit test signal sent by the dispatching master station is monitored, the recovery coordination controller controls the working state of the PCS based on the determined active power, so that the primary frequency modulation is switched to a working mode, and the grid-connected point continuously participates in the primary frequency modulation of the power grid.
Optionally, the remote testing of the energy storage station according to the test instruction after receiving the test instruction includes: after receiving the primary frequency modulation load test simulation frequency test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the simulation frequency of the primary frequency modulation load test instruction by a control object, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
Optionally, the remote testing of the energy storage station according to the test instruction after receiving the test instruction includes: after receiving the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the adjustment test frequency of the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
Optionally, the remote testing of the energy storage station according to the test instruction after receiving the test instruction includes: after primary frequency modulation characteristic parameter test is received, remote test is carried out on the energy storage station according to the test instruction, test frequency is sequentially adjusted according to specified step length in a specified test frequency range aiming at a control object, active power corresponding to grid-connected point frequency is determined by inquiring a set frequency and active power mapping function, the working state of the PCS of the energy storage converter is controlled based on the determined active power, and information of the working state of the PCS of the energy storage converter is returned to the dispatching master station.
Optionally, the transient control further includes performing source network load storage emergency control: the method comprises the steps of monitoring a source network charge storage action command sent by a source network charge storage interaction terminal in an energy storage station through a hard contact start signal through a coordination controller, and if the source network charge storage action command is monitored, uniformly adjusting the working state of an energy storage converter PCS, specifically comprising the steps of sending a full power discharge command to the adjusted energy storage converter PCS, and controlling the energy storage converter PCS to support the active power of a power grid at the maximum output.
Optionally, the transient control further comprises performing voltage reactive control: firstly, calculating reactive power adjustment quantity according to voltage deviation and system impedance or voltage deviation rate, and controlling an energy storage converter PCS according to the reactive power adjustment quantity to perform reactive power output according to the corresponding output size so as to adjust the bus voltage of an energy storage station within a qualified range; the function expression for calculating the reactive power adjustment quantity according to the voltage deviation and the system impedance is as follows:
the function expression for calculating the reactive power adjustment quantity according to the voltage deviation rate is as follows:
wherein DeltaQ represents reactive power adjustment quantity, deltaU is actual voltage U of bus of energy storage station 0 And a constant value U of voltage 1 Voltage deviation of Δu=u 1 -U 0 ，Z s For the system impedance of the energy-storage station, Q 0 For the current reactive power output of the energy storage station, U N For rated voltage, δU% is a voltage regulation rate parameter, wherein the voltage regulation rate parameter refers to the percentage of rated reactive power and corresponding voltage variation, Q N And rated reactive power for the system.
In addition, the invention also provides a rapid coordination control system for the large-scale energy storage substation, which comprises a dispatching master station and a coordination controller which are connected with each other, wherein the coordination controller is programmed or configured to execute the rapid coordination control method for the large-scale energy storage substation.
Furthermore, the invention also provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is used for being programmed or configured by a microprocessor to execute the rapid coordination control method for the large-scale energy storage substation.
Compared with the prior art, the invention has the following advantages: the method comprises the steps of realizing transient control of the PCS of each energy storage transformer substation in the large-scale energy storage transformer substations by adopting a dispatching master station and a coordination controller, wherein the transient control comprises the steps of performing primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage transformer substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and active power mapping function for each primary frequency modulation control object, controls the working state of the PCS of the energy storage transformer based on the determined active power by utilizing the coordination controller so as to realize sagging control of the primary frequency modulation control object, and enables the grid-connected point of each energy storage transformer substation to participate in primary frequency modulation of the power grid based on the determined active power.
Drawings
Fig. 1 is a schematic flow chart of primary frequency modulation according to the method of the embodiment of the invention.
Fig. 2 is an oscillogram obtained in an embodiment of the present invention.
Detailed Description
As shown in fig. 1, the fast coordination control method for a large-scale energy storage substation of the embodiment includes, for an energy storage converter PCS of each energy storage substation in the large-scale energy storage substation, implementing transient control on the energy storage converter PCS by using a scheduling master station and a coordination controller, where the transient control includes performing primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage transformer substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and active power mapping function for each primary frequency modulation control object, and utilizes the coordination controller to control the working state of the PCS of the energy storage transformer based on the determined active power so as to realize sagging control of the primary frequency modulation control object, so that the grid-connected point of each energy storage transformer substation participates in the primary frequency modulation of the power grid based on the determined active power.
The energy storage station utilizes a corresponding active control system, a single machine or an independent control device-a coordination controller to complete active-frequency droop characteristic control, so that the energy storage station has the capacity of participating in primary frequency modulation of a power grid at a grid-connected point. The dispatching master station system takes the frequency of the grid-connected point of the energy storage station as a primary frequency modulation control object, and in principle, different grid-connected points should establish different primary frequency modulation control objects. The primary frequency modulation control object of the energy storage station is each PCS in the factory. In this embodiment, the frequency-active power mapping function is a broken line function, where the broken line function includes mapping relationships between different frequency ranges and active powers corresponding to the different frequency ranges, and primary frequency modulation active-frequency droop characteristics are implemented by setting the broken line function of frequency and active power.
In this embodiment, when the coordination controller is used to control the working state of the PCS of the energy storage converter based on the determined active power, the method further includes: monitoring a primary frequency modulation entering test signal and a primary frequency modulation exiting test signal sent by a dispatching master station, if the primary frequency modulation entering test signal sent by the dispatching master station is monitored, firstly suspending a coordination controller to control the working state of an energy storage converter PCS based on the determined active power so that the primary frequency modulation is switched to a test mode, a grid connection point does not participate in primary frequency modulation of a power grid, then monitoring a test instruction sent by the dispatching master station, executing remote test on the energy storage station according to the test instruction after receiving the test instruction, and returning the result of the remote test to the dispatching master station; if the primary frequency modulation exit test signal sent by the dispatching master station is monitored, the recovery coordination controller controls the working state of the PCS based on the determined active power, so that the primary frequency modulation is switched to a working mode, and the grid-connected point continuously participates in the primary frequency modulation of the power grid.
In this embodiment, performing remote testing on the energy storage station according to the test instruction after receiving the test instruction includes: after receiving the primary frequency modulation load test simulation frequency test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the simulation frequency of the primary frequency modulation load test instruction by a control object, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
In this embodiment, performing remote testing on the energy storage station according to the test instruction after receiving the test instruction includes: after receiving the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the adjustment test frequency of the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
In this embodiment, performing remote testing on the energy storage station according to the test instruction after receiving the test instruction includes: after primary frequency modulation characteristic parameter test is received, remote test is carried out on the energy storage station according to the test instruction, test frequency is sequentially adjusted according to specified step length in a specified test frequency range aiming at a control object, active power corresponding to grid-connected point frequency is determined by inquiring a set frequency and active power mapping function, the working state of the PCS of the energy storage converter is controlled based on the determined active power, and information of the working state of the PCS of the energy storage converter is returned to the dispatching master station.
Under the normal operation condition, when the primary frequency modulation function of the energy storage rapid power coordination controller is input, the scheduling master station system can issue a primary frequency modulation entering test instruction in real time, and the energy storage station enters primary frequency modulation online test. The dispatching master station system respectively transmits instructions such as primary frequency modulation load test simulation frequency or primary frequency modulation load increase/decrease test, primary frequency modulation characteristic parameter test and the like, carries out remote test on primary frequency modulation performance and characteristic parameter setting of the energy storage station, and then ends primary frequency modulation online test by transmitting primary frequency modulation exit test instructions after the test is completed. The energy storage rapid power coordination controller performs primary frequency modulation on-line monitoring signal interaction with the dispatching master station through the network shutdown, when a primary frequency modulation entering test signal is received, the primary frequency modulation function is switched to a test mode, the primary frequency modulation function exits from actual operation, and no response is generated to the change of the frequency of the power grid. And in the primary frequency modulation entering test state, the scheduling master station system transmits a primary frequency modulation load test analog frequency or a primary frequency modulation load test increasing (decreasing) signal to perform primary frequency modulation performance remote test, and the energy storage rapid power coordination controller performs primary frequency modulation load response according to the test frequency and dynamically adjusts frequency characteristics according to the load.
In this embodiment, the transient control further includes performing source network load storage emergency control: the method comprises the steps of monitoring a source network charge storage action command sent by a source network charge storage interaction terminal in an energy storage station through a hard contact start signal through a coordination controller, and if the source network charge storage action command is monitored, uniformly adjusting the working state of an energy storage converter PCS, specifically comprising the steps of sending a full power discharge command to the adjusted energy storage converter PCS, and controlling the energy storage converter PCS to support the active power of a power grid at the maximum output. In the embodiment, the action command is directly sent to the coordination controller, the energy storage rapid power coordination controller (running state) uniformly adjusts the PCS to discharge power, and when the source network charge storage action command is effective, the energy storage rapid power coordination controller transmits full power discharge instructions to each PCS to control the PCS to support the active power of the power grid system with the maximum power output, and the source network charge storage emergency control response delay of the energy storage rapid power coordination controller is less than 10ms, so that the response time of the source network charge storage emergency control response can be effectively improved.
In this embodiment, the transient control further includes performing voltage reactive power control: firstly, calculating reactive power adjustment quantity according to voltage deviation and system impedance or voltage deviation rate, and controlling an energy storage converter PCS according to the reactive power adjustment quantity to perform reactive power output according to the corresponding output size so as to adjust the bus voltage of an energy storage station within a qualified range; the function expression for calculating the reactive power adjustment quantity according to the voltage deviation and the system impedance is as follows:
the function expression for calculating the reactive power adjustment quantity according to the voltage deviation rate is as follows:
wherein DeltaQ represents reactive power adjustment quantity (negative sign represents that voltage is higher to reduce reactive power output, voltage is lower to increase reactive power output), deltaU is actual voltage U of bus of energy storage station 0 And a constant value U of voltage 1 Voltage deviation (positive value when actual voltage is higher), Δu=u 1 -U 0 ，Z S For the system impedance of the energy-storage station, Q 0 For the current reactive power output of the energy storage station, U N The delta U% is a voltage regulation rate parameter which refers to the percentage of the rated reactive power and the corresponding voltage variation (the voltage difference between the bus bars of the energy storage station before and after the rated reactive power is sent out) and Q N And rated reactive power for the system. Therefore, the coordination controller has a dynamic reactive voltage regulation mode and can control voltage reactive power. And the increase and decrease of reactive power output can be automatically regulated after the bus voltage deviates from the set upper and lower voltage limits under the dynamic reactive power voltage regulation mode, so that the bus voltage of the energy storage station is kept within a qualified range. The dynamic reactive voltage regulation response time (voltage dip to GOOSE output) is less than 10ms. The reactive power regulation during dynamic reactive power voltage regulation control can be obtained by calculating according to the voltage deviation and the system impedance or the voltage deviation rateAnd obtaining the qualified voltage through multiple times of cyclic regulation control.
In this embodiment, the coordination controller uses a 32-bit high-performance microprocessor as a core for fault detection and function management, and uses a high-speed digital signal processor for protection computation. The coordination controller adopts a high-performance internal communication bus, ensures the reliability of data communication among the board card plug-ins, supports distributed computation and system balance load, and ensures that the system performance is easy to expand. The coordination controller adopts a double sampling channel and a redundant DSP processor (a protection DSP and a starting DSP) to realize parallel processing and real-time calculation of sampling data at each sampling interval, thereby ensuring the reliability and the safety of the device. The current voltage from the traditional CT/VT (PT) is converted into a small voltage signal, filtered and sent to the protection DSP, AD sampled and sent to the protection DSP and the starting DSP for protection calculation and fault detection respectively. The start DSP is responsible for fault detection and opens the outlet relay positive power when a fault is detected. The protection DSP is responsible for protecting logic calculation, and when the action condition is reached, the outlet relay is driven to act. The CPU plug-in is responsible for sequential event recording (SOE), wave recording, printing, time setting, man-machine interface and communication with the monitoring system. In this embodiment, the coordination controller has the following functions: 1. active power control, supporting two modes: primary frequency modulation and source network charge storage control; 2. reactive power control, supporting a dynamic reactive voltage regulation control mode; 3. the host supports the redundant configuration of the host and the backup, and realizes the automatic switching of the host and the backup and the manual switching of the monitoring system; 4. synchronization adjustment of 128 PCS is supported maximally; 5. rapidly forwarding a millisecond-level power regulation command of the monitoring host to the PCS; 6. the upper support of the EC61850 protocol; 7. communication is carried out on the lower part through GOOSE and modbus with the PCS controller; 8. three-phase voltage, three-phase current and P, Q, F, COS acquisition and telemetering uploading of two paths of grid-connected points are supported; 9. the slave machine supports 4 PCS communication access at maximum; 10. supporting remote modification of a fixed value; 11. support I RIG-B pairs.
To verify the method of the present embodiment, the present embodiment further includes performing the following tests: (1) response delay time detection: (1) setting a state sequence by using a relay protection instrument, simulating that the real-time PCS is 4kW, the analog grid-tie point frequency was varied from 50Hz to 49.8Hz at 1 Hz/s. (2) And (3) starting the primary frequency modulation function of the energy storage rapid power coordination controller, setting a frequency modulation dead zone to be 0.05Hz, and setting a frequency modulation difference rate to be 2%. (3) The PCS current signal, the dc 48V signal at the time of the frequency change, and the output switching value signal were recorded using an oscilloscope, as shown in fig. 2. (4) And estimating primary frequency modulation response time by analyzing oscillograph wave recording and host action wave recording. (2) precision detection of the regulated power value: (1) and setting the grid-connected point sampling by using a relay protection instrument, wherein the simulated grid-connected point active power is 20kW, the simulated PCS real-time active power is 20kW, and the simulated grid-connected point frequency is respectively changed from 50Hz to 49.85Hz, from 50Hz to 49.75Hz and from 50Hz to 50.15Hz. (2) And starting a primary frequency modulation function of the host, setting a frequency modulation dead zone to be 0.05Hz, and setting a frequency modulation difference rate to be 2%. As can be seen from the analysis of fig. 2, the time from the beginning of the frequency change to the beginning of the PCS response to the adjustment command is about 166ms. By analyzing the action wave recording of the host, the response delay time from the detection of the frequency down to the dead zone (0.05 Hz) to the sending of the adjusting command is about 16.7ms. By analyzing oscilloscope wave recording and host action wave recording, the response delay time of the host primary frequency modulation function is less than 20ms, and the primary frequency modulation response delay time of the PCS is about 166ms, so that compared with the traditional AGC\AVC control rate, the method has the advantage that the control rate is greatly improved.
In summary, the fast coordination control method for a large-scale energy storage substation of the embodiment includes, for an energy storage converter PCS of each energy storage substation in the large-scale energy storage substation, implementing transient control on the energy storage converter PCS by using a scheduling master station and a coordination controller, where the transient control includes performing primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage transformer substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and the active power mapping function for each primary frequency modulation control object, controls the working state of the PCS of the energy storage transformer based on the determined active power by utilizing the coordination controller so as to realize sagging control of the primary frequency modulation control object, and enables the grid-connected point of each energy storage transformer substation to participate in primary frequency modulation of the power grid based on the determined active power.
In addition, the embodiment also provides a rapid coordination control system for the large-scale energy storage substation, which comprises a dispatching master station and a coordination controller which are connected with each other, wherein the coordination controller is programmed or configured to execute the rapid coordination control method for the large-scale energy storage substation. Furthermore, the present embodiment also provides a computer readable storage medium having a computer program stored therein for being programmed or configured by a microprocessor to perform the fast coordinated control method for a large-scale energy storage substation.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein. The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. The fast coordination control method for the large-scale energy storage transformer substations is characterized by comprising the steps of realizing transient control of an energy storage converter PCS of each energy storage transformer substation in the large-scale energy storage transformer substations by adopting a dispatching master station and a coordination controller, wherein the transient control comprises primary frequency modulation: the scheduling master station respectively takes the grid-connected point frequency of each energy storage transformer substation as an independent primary frequency modulation control object, determines the active power corresponding to the grid-connected point frequency by inquiring the set frequency and active power mapping function for each primary frequency modulation control object, and utilizes the coordination controller to control the working state of the PCS of the energy storage transformer based on the determined active power so as to realize sagging control of the primary frequency modulation control object, so that the grid-connected point of each energy storage transformer substation participates in the primary frequency modulation of the power grid based on the determined active power.
2. The method for fast coordination control of a large-scale energy storage substation according to claim 1, wherein the frequency and active power mapping function is a broken line function, and the broken line function comprises mapping relations between different frequency ranges and corresponding active powers.
3. The method for fast coordination control of a large-scale energy storage substation according to claim 1, wherein when the coordination controller is used to control the operation state of the energy storage converter PCS based on the determined active power, the method further comprises: monitoring a primary frequency modulation entering test signal and a primary frequency modulation exiting test signal sent by a dispatching master station, if the primary frequency modulation entering test signal sent by the dispatching master station is monitored, firstly suspending a coordination controller to control the working state of an energy storage converter PCS based on the determined active power so that the primary frequency modulation is switched to a test mode, a grid connection point does not participate in primary frequency modulation of a power grid, then monitoring a test instruction sent by the dispatching master station, executing remote test on the energy storage station according to the test instruction after receiving the test instruction, and returning the result of the remote test to the dispatching master station; if the primary frequency modulation exit test signal sent by the dispatching master station is monitored, the recovery coordination controller controls the working state of the PCS based on the determined active power, so that the primary frequency modulation is switched to a working mode, and the grid-connected point continuously participates in the primary frequency modulation of the power grid.
4. The method for rapid coordination control of a large-scale energy storage substation according to claim 3, wherein performing remote testing of the energy storage station according to the test instruction after receiving the test instruction comprises: after receiving the primary frequency modulation load test simulation frequency test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the simulation frequency of the primary frequency modulation load test instruction by a control object, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
5. The method for rapid coordination control of a large-scale energy storage substation according to claim 3, wherein performing remote testing of the energy storage station according to the test instruction after receiving the test instruction comprises: after receiving the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, executing remote test on the energy storage station according to the test instruction, inquiring the set frequency and active power mapping function to determine the active power corresponding to the grid-connected point frequency according to the adjustment test frequency of the primary frequency modulation load increase test instruction or the primary frequency modulation load decrease test instruction, controlling the working state of the PCS of the energy storage converter based on the determined active power, and returning the information of the working state of the PCS of the energy storage converter to the dispatching master station.
6. The method for rapid coordination control of a large-scale energy storage substation according to claim 3, wherein performing remote testing of the energy storage station according to the test instruction after receiving the test instruction comprises: after primary frequency modulation characteristic parameter test is received, remote test is carried out on the energy storage station according to the test instruction, test frequency is sequentially adjusted according to specified step length in a specified test frequency range aiming at a control object, active power corresponding to grid-connected point frequency is determined by inquiring a set frequency and active power mapping function, the working state of the PCS of the energy storage converter is controlled based on the determined active power, and information of the working state of the PCS of the energy storage converter is returned to the dispatching master station.
7. The rapid coordination control method for a large-scale energy storage substation of claim 1, wherein the transient control further comprises performing source network charge storage emergency control: the method comprises the steps of monitoring a source network charge storage action command sent by a source network charge storage interaction terminal in an energy storage station through a hard contact start signal through a coordination controller, and if the source network charge storage action command is monitored, uniformly adjusting the working state of an energy storage converter PCS, specifically comprising the steps of sending a full power discharge command to the adjusted energy storage converter PCS, and controlling the energy storage converter PCS to support the active power of a power grid at the maximum output.
8. The rapid coordination control method for a large-scale energy storage substation of claim 1, wherein the transient control further comprises performing voltage reactive control: firstly, calculating reactive power adjustment quantity according to voltage deviation and system impedance or voltage deviation rate, and controlling an energy storage converter PCS according to the reactive power adjustment quantity to perform reactive power output according to the corresponding output size so as to adjust the bus voltage of an energy storage station within a qualified range; the function expression for calculating the reactive power adjustment quantity according to the voltage deviation and the system impedance is as follows:
the function expression for calculating the reactive power adjustment quantity according to the voltage deviation rate is as follows:
wherein DeltaQ represents reactive power adjustment quantity, deltaU is actual voltage U of bus of energy storage station 0 And a constant value U of voltage 1 Voltage deviation of Δu=u 1 -U 0 ，Z S For the system impedance of the energy-storage station, Q 0 For the current reactive power output of the energy storage station, U N For rated voltage, δU% is a voltage regulation rate parameter, wherein the voltage regulation rate parameter refers to the percentage of rated reactive power and corresponding voltage variation, Q N And rated reactive power for the system.
9. A fast coordinated control system for a large-scale energy storage substation comprising a dispatch master station and a coordination controller connected to each other, characterized in that the coordination controller is programmed or configured to perform the fast coordinated control method for a large-scale energy storage substation according to any one of claims 1-8.
10. A computer readable storage medium having a computer program stored therein, characterized in that the computer program is for being programmed or configured by a microprocessor to perform the fast coordinated control method for a large scale energy storage substation according to any one of claims 1-8.
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| CN117055449A (en) * | 2023-10-11 | 2023-11-14 | 南京荣泰电气自动化有限公司 | Implementation method of coordination control device for high-capacity energy storage power station |
| CN117293864A (en) * | 2023-09-26 | 2023-12-26 | 江苏方天电力技术有限公司 | New energy power generation configuration energy storage power cooperative control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117293864A (en) * | 2023-09-26 | 2023-12-26 | 江苏方天电力技术有限公司 | New energy power generation configuration energy storage power cooperative control method and system |
| CN117055449A (en) * | 2023-10-11 | 2023-11-14 | 南京荣泰电气自动化有限公司 | Implementation method of coordination control device for high-capacity energy storage power station |
| CN117055449B (en) * | 2023-10-11 | 2023-12-26 | 南京荣泰电气自动化有限公司 | Implementation method of coordination control device for high-capacity energy storage power station |
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