Energy storage power station operation management method and system, equipment and medium

Abstract

The invention relates to the technical field of energy storage power station control, in particular to an energy storage power station operation management method and system, equipment and a medium, and the method mainly comprises the steps: obtaining the target supply power needed by a power grid, and determining the target impact factors of a plurality of current energy storage systems; setting an acquisition period, obtaining parameters corresponding to the target influence factors in the acquisition period, calculating the data instability rate of the target influence factors according to the parameters corresponding to the influence factors, and establishing an electric energy distribution model; and adjusting the output power of the plurality of energy storage systems through an electric energy distribution model based on the data instability rate of the target influence factor. Through the method, the influence of the influence factor of each energy storage system on the energy storage system is considered, then whether the influence factor is stable is considered, and the calculation weight of the output power of each energy storage system is given, so that the output power of each energy storage system is set in a reasonable range; and the influence on the power grid when the energy storage system fluctuates is reduced as much as possible.

Description

Technical Field

[0001] The present invention relates to the field of energy storage power station control technology, and in particular to an energy storage power station operation management method, system, equipment, and medium. Background Art

[0002] As the economy and society develop rapidly, electricity demand is also increasing. In recent years, the steady increase in peak load demand and the large-scale use of intermittent renewable energy have significantly increased the level of load fluctuation and uncertainty in the power system. To alleviate these problems, research on energy storage as a controllable resource in power system regulation has attracted the attention of numerous scholars. Energy storage serves as both a "source" and a "load," offering advantages such as peak load shaving and valley filling, and smoothing fluctuations. It can effectively alleviate the pressure on the power grid caused by the integration of renewable energy generation and the rapid growth of load.

[0003] In an energy storage power station, there may be multiple energy storage systems, such as pumped storage and chemical battery storage. Each energy storage system is connected to the power grid for power supply, but there is no specific distribution method in the existing technology, resulting in unreasonable output power of each energy storage system. Summary of the Invention

[0004] The purpose of the present invention is to provide an energy storage power station operation management method and system, equipment, and medium to solve the above-mentioned problems in the prior art.

[0005] The present invention is achieved through the following technical solutions:

[0006] In a first aspect, a method for operating and managing an energy storage power station includes:

[0007] Obtaining the status of various energy storage systems in the current energy storage power station, where the status includes storing energy or discharging energy, and obtaining the number of types of energy storage systems currently discharging;

[0008] If the current category is not greater than 1, no processing is performed. If the current category is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of the current several energy storage systems are determined respectively;

[0009] Set a collection period, obtain the parameters corresponding to the target impact factor within the collection period, and calculate the data instability rate of the target impact factor based on the parameters corresponding to the impact factor;

[0010] An electric energy distribution model is established. Based on the data instability rate of the target influencing factor, the output power of several energy storage systems is adjusted through the electric energy distribution model. Based on the target supply power required by the current power grid, the corrected output power of the current several energy storage systems is output.

[0011] Preferably, determining the target impact factors of the current plurality of energy storage systems includes:

[0012] Obtain all influencing factors of a certain energy storage system and historical operating data of the energy storage system, and obtain several approximate target data groups of the influencing factors based on the historical operating data, wherein the several approximate target data groups include data of different influencing factors, non-target data that is the same except for the data of the influencing factors, and output power;

[0013] The data and output power of the impact factor are retained, and the impact rate of the impact factor is calculated based on the data and output power of different impact factors;

[0014] Set the selection number threshold and retain all the influence factors whose values are ranked from large to small until the number of influence factors that matches the number threshold is the target influence factor.

[0015] Preferably, the calculation of the influence rate of the impact factor includes:

[0016]

[0017] Where η j is the impact rate of the jth impact factor, n j is the number of data sets of the jth influencing factor, P i is the output power in the i-th approximate target data group, r i is the data of the influencing factor in the i-th approximate target data group.

[0018] Preferably, the setting of the selection number threshold includes:

[0019] Calculate the average of the impact rates of all impact factors and obtain the number of factors whose impact rates are greater than or equal to the average;

[0020] The number greater than or equal to the average value is used as the value of the selection number threshold.

[0021] Preferably, the data instability rate of the target impact factor is calculated including:

[0022]

[0023] Where, is the instability rate, l is the number of target impact factor data in one acquisition cycle, t1 is the value of the first target impact factor, t q is the average value of the target impact factor.

[0024] Preferably, the establishing of the electric energy distribution model includes:

[0025] Obtain the average instability rate of target influencing factors of several energy storage systems, and establish an allocation function based on the average instability rate and the target supply power required by the power grid;

[0026] The current corrected output power of each energy storage system is output through the allocation function.

[0027] Preferably, obtaining the average instability rate of target impact factors of several energy storage systems includes:

[0028]

[0029] The establishment of the allocation function comprises:

[0030]

[0031] Where, is the average instability rate of the target influencing factors of the y-th energy storage system, N is the number of influencing factors, is the value of the oth target impact factor of the yth energy storage system, P y is the output power of the yth energy storage system after correction, and P is the target power required by the grid.

[0032] In a second aspect, the present invention further provides an energy storage power station operation and management system, comprising:

[0033] The data processing module is configured to obtain the status of various energy storage systems in the current energy storage power station, including whether the status is storing energy or discharging energy, and obtain the number of types of energy storage systems currently discharging; if the number of types is not greater than 1, no processing is performed; if the current number of types is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of the current multiple energy storage systems are determined; a collection period is set, and the parameters corresponding to the target impact factors within the collection period are obtained, and the data instability rate of the target impact factors is calculated based on the parameters corresponding to the impact factors;

[0034] a distribution module configured to establish an electric energy distribution model, adjust the output power of the plurality of energy storage systems using the electric energy distribution model based on the data instability rate of the target influencing factor, and output the corrected output power of the plurality of energy storage systems based on the target supply power currently required by the power grid;

[0035] The main control device is connected to the data processing module and the distribution module, and is used in the above-mentioned energy storage power station operation management method.

[0036] In a third aspect, the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned energy storage power station operation management method when executing the computer program.

[0037] In a fourth aspect, the present invention further provides a computer-readable storage medium storing a computer program, wherein the computer program is executed by a processor to implement the above-mentioned energy storage power station operation management method.

[0038] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0039] The method provided by the present invention mainly includes obtaining the target supply power required by the power grid and determining the target influence factors of several current energy storage systems respectively; setting an acquisition period, obtaining the parameters corresponding to the target influence factors within the acquisition period, calculating the data instability rate of the target influence factors according to the parameters corresponding to the influence factors, establishing an electric energy distribution model, and adjusting the output power of several energy storage systems through the electric energy distribution model based on the data instability rate of the target influence factors. Through the above method, the influence of the influence factors of each energy storage system on the energy storage system is taken into account, and then whether the influence factors are stable is considered, and the calculation weight of the output power of each energy storage system is given, so that the output power of each energy storage system is set within a reasonable range, and the impact of fluctuations in the energy storage system on the power grid is reduced as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 It is a control flow diagram of the present invention;

[0042] Figure 2 Schematic diagram of the system structure of the present invention. DETAILED DESCRIPTION

[0043] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0044] The division of modules in this application is a logical division. In actual application, there may be other division methods. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed.

[0045] Independently described modules or submodules may or may not be physically separate; they may be implemented in software or hardware. Some modules or submodules may be implemented in software, with the processor invoking the software to implement the functionality of these modules or submodules, while other modules or submodules may be implemented in hardware, such as hardware circuits. Furthermore, some or all of the modules may be selected based on actual needs to achieve the objectives of the present application.

[0046] Please refer to Figure 1-Figure 2 , a method for operating and managing an energy storage power station, comprising:

[0047] S101: Obtaining the status of various energy storage systems in the current energy storage power station, where the status includes whether energy is being stored or discharged, and obtaining the number of types of energy storage systems currently discharging;

[0048] There are many energy storage systems in energy storage power stations, the most common of which are pumped storage, chemical battery storage, superconducting energy storage, etc. In this embodiment, the system that is storing energy is not considered, and only the energy storage system that is discharging is considered, that is, the system that is connected to the power grid and supplies power to the power grid.

[0049] S102: If the current category is not greater than 1, no processing is performed. If the current category is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of the current energy storage systems are determined respectively;

[0050] Among them, if the energy storage system that is outputting electricity is not larger than 1, there is no point in adjusting it. The current energy storage system can output the power required by the grid. If there are multiple energy storage systems currently outputting power to the grid, the output power of each energy storage system can be adjusted.

[0051] Secondly, each energy storage system has multiple parameters that will affect the output power. These parameters are defined as influencing factors in this embodiment. However, not every change in the influencing factor will cause a significant change in the output power. Therefore, in this embodiment, it is necessary to find the target influencing factors that will have a significant impact on the output power. For example, the influencing factors of pumped storage include water flow rate and motor failure rate, and the influencing factors of chemical battery energy storage include the content of various chemical elements in the chemical battery.

[0052] S103: Setting a collection period, obtaining parameters corresponding to the target impact factor within the collection period, and calculating the data instability rate of the target impact factor based on the parameters corresponding to the impact factor;

[0053] The data instability rate of the target impact factor can reflect the fluctuation of the target factor data. If the fluctuation is large, it will cause large fluctuations in the output power, which will ultimately affect the output to the grid. Therefore, the calculation weight of each energy storage system is set based on the instability rate of the target impact factor.

[0054] S104: Establish an electric energy distribution model, adjust the output power of several energy storage systems through the electric energy distribution model based on the data instability rate of the target influencing factor, and output the corrected output power of the current several energy storage systems based on the target supply power required by the current power grid.

[0055] The method provided by the present invention mainly includes obtaining the target supply power required by the power grid and determining the target influence factors of several current energy storage systems respectively; setting an acquisition period, obtaining the parameters corresponding to the target influence factors within the acquisition period, calculating the data instability rate of the target influence factors according to the parameters corresponding to the influence factors, establishing an electric energy distribution model, and adjusting the output power of several energy storage systems through the electric energy distribution model based on the data instability rate of the target influence factors. Through the above method, the influence of the influence factors of each energy storage system on the energy storage system is taken into account, and then whether the influence factors are stable is considered, and the calculation weight of the output power of each energy storage system is given, so that the output power of each energy storage system is set within a reasonable range, and the impact of fluctuations in the energy storage system on the power grid is reduced as much as possible.

[0056] In an exemplary embodiment of the present invention, determining target impact factors of several current energy storage systems includes:

[0057] Acquire all influencing factors of a certain energy storage system and the operating history data of the energy storage system, and acquire several approximate target data groups of the influencing factors based on the operating history data, wherein the approximate target data groups include data of different influencing factors, non-target data that is the same except for the data of the influencing factors, and output power; retain the data and output power of the influencing factors, and calculate the influence rate of the influencing factors based on the data and output power of different influencing factors; set a selection number threshold, and retain the influencing factors whose values of all influence rates are from large to small and whose number is consistent with the number threshold as the target influencing factors.

[0058] In this embodiment, several data groups are found in the historical data, in which only the influencing factors change while the rest of the data remain unchanged. The influencing factor data and the output power of the data group are extracted, so that the change in output power caused by the change in the influencing factor can be intuitively obtained.

[0059] Specifically, the impact factor rate calculated includes:

[0060]

[0061] Where η j is the impact rate of the jth impact factor, n j is the number of data sets of the jth influencing factor, P i is the output power in the i-th approximate target data group, r i is the data of the influencing factor in the i-th approximate target data group.

[0062] Among them, among several groups of data of the same influencing factor, the average value obtained after comprehensive calculation is the influence rate of the influencing factor. The larger the influence rate, the greater the impact of the influencing factor on the output power of the energy storage system.

[0063] Secondly, setting the selection number threshold includes:

[0064] Calculate the average of the impact rates of all influencing factors, and obtain the number of factors whose impact rates are greater than or equal to the average; and use the number greater than or equal to the average as the value of the selection number threshold.

[0065] In an exemplary embodiment of the present invention, the calculation of the data instability rate of the target impact factor includes:

[0066]

[0067] Where, is the instability rate, l is the number of target impact factor data in one acquisition cycle, t1 is the value of the first target impact factor, t q is the average value of the target impact factor.

[0068] In an exemplary embodiment of the present invention, establishing an electric energy distribution model includes:

[0069] Obtain the average instability rate of target influencing factors of several energy storage systems, and establish an allocation function based on the average instability rate and the target supply power required by the power grid;

[0070] The current corrected output power of each energy storage system is output through the allocation function.

[0071] Preferably, obtaining the average instability rate of target impact factors of several energy storage systems includes:

[0072]

[0073] The establishment of the allocation function comprises:

[0074]

[0075] Where, is the average instability rate of the target influencing factors of the y-th energy storage system, N is the number of influencing factors, is the value of the oth target impact factor of the yth energy storage system, P y is the output power of the yth energy storage system after correction, and P is the target power required by the grid.

[0076] Among them, after obtaining the instability rate of the target impact factor, the average instability rate of all target impacts under the energy storage system can be obtained, that is, the weight for calculating the energy storage system allocation is obtained. The higher the instability rate, the lower the allocated output power.

[0077] In a second aspect, the present invention further provides an energy storage power station operation and management system, comprising:

[0078] The data processing module is configured to obtain the status of various energy storage systems in the current energy storage power station, including whether the status is storing energy or discharging energy, and obtain the number of types of energy storage systems currently discharging; if the number of types is not greater than 1, no processing is performed; if the current number of types is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of the current multiple energy storage systems are determined; a collection period is set, and the parameters corresponding to the target impact factors within the collection period are obtained, and the data instability rate of the target impact factors is calculated based on the parameters corresponding to the impact factors;

[0079] a distribution module configured to establish an electric energy distribution model, adjust the output power of the plurality of energy storage systems using the electric energy distribution model based on the data instability rate of the target influencing factor, and output the corrected output power of the plurality of energy storage systems based on the target supply power currently required by the power grid;

[0080] The main control device is connected to the data processing module and the distribution module, and is used in the above-mentioned energy storage power station operation management method.

[0081] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0082] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. The computer software product is stored in a storage medium and includes a number of instructions for causing a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard drives, read-only memories (ROMs), random access memories (RAMs), magnetic disks, optical disks, and other media that can store program code.

[0083] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A method for operation and management of an energy storage power station, characterized in that: include: Obtaining the status of various energy storage systems in the current energy storage power station, where the status includes storing energy or discharging energy, and obtaining the number of types of energy storage systems currently discharging; If the current category is not greater than 1, no processing is performed. If the current category is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of the current several energy storage systems are determined respectively; Set a collection period, obtain the parameters corresponding to the target impact factor within the collection period, and calculate the data instability rate of the target impact factor based on the parameters corresponding to the impact factor; An electric energy distribution model is established. Based on the data instability rate of the target influencing factor, the output power of several energy storage systems is adjusted through the electric energy distribution model. Based on the target supply power required by the current power grid, the corrected output power of the current several energy storage systems is output.

2. The energy storage power station operation management method according to claim 1, characterized in that: Determining the target impact factors of the current multiple energy storage systems includes: Obtain all influencing factors of a certain energy storage system and historical operating data of the energy storage system, and obtain several approximate target data groups of the influencing factors based on the historical operating data, wherein the several approximate target data groups include data of different influencing factors, non-target data that is the same except for the data of the influencing factors, and output power; The data and output power of the impact factor are retained, and the impact rate of the impact factor is calculated based on the data and output power of different impact factors; Set the selection number threshold and retain all the influence factors whose values are ranked from large to small until the number of influence factors that matches the number threshold is the target influence factor.

3. The energy storage power station operation management method according to claim 2, characterized in that: The influence rate of the impact factor obtained by calculation includes: Where η j is the impact rate of the jth impact factor, n j is the number of data sets of the jth influencing factor, P i is the output power in the i-th approximate target data group, r i is the data of the influencing factor in the i-th approximate target data group.

4. The energy storage power station operation management method according to claim 3, characterized in that: The setting of the selection number threshold includes: Calculate the average of the impact rates of all impact factors and obtain the number of factors whose impact rates are greater than or equal to the average; The number greater than or equal to the average value is used as the value of the selection number threshold.

5. The energy storage power station operation management method according to claim 4, characterized in that: The data instability rate for calculating the target impact factor includes: Where, is the instability rate, l is the number of target impact factor data in one acquisition cycle, t1 is the value of the first target impact factor, t q is the average value of the target impact factor.

6. The energy storage power station operation management method according to claim 5, characterized in that: The establishing of the electric energy distribution model comprises: Obtain the average instability rate of target influencing factors of several energy storage systems, and establish an allocation function based on the average instability rate and the target supply power required by the power grid; The current corrected output power of each energy storage system is output through the allocation function.

7. The energy storage power station operation management method according to claim 6, characterized in that: The method of obtaining the average instability rate of target impact factors of several energy storage systems includes: The establishment of the allocation function comprises: Where, is the average instability rate of the target influencing factors of the y-th energy storage system, N is the number of influencing factors, is the value of the oth target impact factor of the yth energy storage system, P y is the output power of the yth energy storage system after correction, and P is the target power required by the grid.

8. An energy storage power station operation management system, characterized in that: include: The data processing module is configured to obtain the status of various energy storage systems in the current energy storage power station, wherein the status includes storing energy or discharging energy, and obtain the number of types of energy storage systems currently discharging; If the category is not greater than 1, no processing is performed. If the current category is greater than 1, the target supply power required by the power grid is obtained, and the target impact factors of several current energy storage systems are determined respectively. A collection period is set, and the parameters corresponding to the target impact factors within the collection period are obtained. Based on the parameters corresponding to the impact factors, the data instability rate of the target impact factors is calculated. a distribution module configured to establish an electric energy distribution model, adjust the output power of the plurality of energy storage systems using the electric energy distribution model based on the data instability rate of the target influencing factor, and output the corrected output power of the plurality of energy storage systems based on the target supply power currently required by the power grid; A main control device is connected to the data processing module and the distribution module, and is used to execute the energy storage power station operation management method described in any one of claims 1-7.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, an energy storage power station operation management method according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for operating and managing an energy storage power station according to any one of claims 1 to 7 is implemented.

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