Self-adaptive distributed photovoltaic cluster cooperative regulation and control method and device

Abstract

The invention provides an adaptive distributed photovoltaic cluster cooperative regulation and control method and device, and relates to the technical field of power grids. According to the invention, the real-time operation data of the distributed photovoltaic cluster is analyzed, the adjustment capability of each photovoltaic unit and each energy storage unit in the distributed photovoltaic cluster is determined, the region division and active demand analysis are carried out on the operation data of the power grid, the adjustment capability and the active demand of each unit are integrated, the self-adaptive active matching is carried out on each unit, and the real-time operation data of the distributed photovoltaic cluster is obtained. And performing cooperative regulation and control on the preliminary regulation and control scheme among the regions based on a matching result, and finally generating a cooperative regulation and control scheme. According to the invention, the actual operation conditions of each photovoltaic unit and each energy storage unit are fully considered, the self-adaptive cooperative regulation and control of the distributed photovoltaic cluster are realized, the problem of mismatching between photovoltaic power generation and power grid load is avoided, and the utilization rate of new energy is improved. And through cooperative regulation and control among the areas in the distributed photovoltaic cluster, the regulation and control efficiency of the power grid is improved, so that the operation of the power grid is more stable.

Description

Technical Field

[0001] The present invention relates to the field of electric power grid technology, and in particular to an adaptive distributed photovoltaic cluster coordinated control method and device. Background Art

[0002] New energy, especially solar photovoltaic power generation technology, has developed rapidly. As an important form of solar energy utilization, distributed photovoltaic systems have been widely used in power systems due to their advantages such as flexible installation, proximity to load centers, and reduced transmission losses.

[0003] Distributed photovoltaic clusters are usually composed of multiple geographically dispersed photovoltaic units, each of which generates electricity independently according to local light conditions. At the same time, in order to balance the supply and demand of the power grid and improve system stability, some distributed photovoltaic clusters are also equipped with energy storage units to release electricity when there is insufficient light or when the power grid demand is peak. There are differences in the operating status and regulation capabilities of each photovoltaic unit and energy storage unit in the distributed photovoltaic cluster, and the load demand of the power grid changes all the time, so the regulation of distributed photovoltaic clusters becomes more and more complicated.

[0004] Due to the imperfect grid dispatching mechanism and the poor information exchange between distributed photovoltaic clusters and the grid, there are many limitations on the grid's acceptance of distributed photovoltaic power. When the grid load is low or the grid's acceptance capacity is limited, a large amount of photovoltaic power cannot be consumed in time, resulting in the phenomenon of "abandoned light", which seriously reduces the utilization rate of new energy. When the grid load is large and the power generation of distributed photovoltaic clusters is limited, the energy storage system cannot provide sufficient supporting energy, resulting in limited grid control means, which may cause grid voltage fluctuations, frequency offsets and other problems, affecting the safe and stable operation of the grid. Summary of the invention

[0005] The present invention provides an adaptive distributed photovoltaic cluster coordinated control method and device, which can realize adaptive coordinated control of distributed photovoltaic clusters and improve the utilization rate of new energy and the stability of the power grid.

[0006] In a first aspect, the present invention provides an adaptive distributed photovoltaic cluster coordinated control method, the method comprising: obtaining grid operation data of each monitoring point in the target grid, and real-time operation data of the distributed photovoltaic cluster; the distributed photovoltaic cluster comprises multiple photovoltaic units and multiple energy storage units; based on the real-time operation data, determining the regulation capacity of each photovoltaic unit and each energy storage unit; based on the grid operation data, performing regional division to determine the active power demand of each region of the target grid; based on the active power demand of each region, and the regulation capacity of each photovoltaic unit and each energy storage unit, performing adaptive active power matching to determine the matching results and preliminary control scheme of each region; based on the matching results of each region, performing coordinated control on the preliminary control scheme to determine the coordinated control scheme of the distributed photovoltaic cluster, the coordinated control scheme comprising the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

[0007] In one possible implementation, the real-time operating data includes the maximum power generation power and output active power of the photovoltaic unit, and the rated capacity and charge state of the energy storage unit; based on the real-time operating data, the regulation capacity of each photovoltaic unit and each energy storage unit is determined, including: based on the maximum power generation power and output active power of each photovoltaic unit, the maximum output active power and the minimum output active power of each photovoltaic unit are determined; based on the maximum output active power and the minimum output active power of each photovoltaic unit, the regulation capacity of each photovoltaic unit is determined; the regulation capacity represents the regulation range of the output active power; based on the rated capacity and charge state of each energy storage unit, the maximum output active power and the minimum output active power of each energy storage unit are determined; based on the maximum output active power and the minimum output active power of each energy storage unit, the regulation capacity of each energy storage unit is determined.

[0008] In one possible implementation, regional division is performed based on grid operation data to determine the active power demand of each area of ​​the target grid, including: regional division is performed based on the architecture information of the target grid and the location information of each monitoring point to determine multiple areas and each monitoring point in each area; frequency deviation and frequency change rate of each area are determined based on the grid operation data of each detection point in each area; active power demand of each area is determined based on the frequency deviation and frequency change rate of each area.

[0009] In a possible implementation, based on the active power demand of each region and the regulation capacity of each photovoltaic unit and each energy storage unit, adaptive active power matching is performed to determine the matching results and preliminary control schemes of each region, including: determining the maximum output active power of each region based on the regulation capacity of each photovoltaic unit and each energy storage unit in each region; determining the matching results of each region based on the active power demand and the maximum output active power of each region; the matching results include insufficient regional regulation capacity and sufficient regional regulation capacity; for any region, if the matching result of the region is sufficient regional regulation capacity, then based on the maximum output active power of each photovoltaic unit and each energy storage unit in the region, the output capacity ratio of each unit in the region is calculated; based on the output capacity ratio of each unit in the region and the active power demand of the region, active power allocation is performed to determine the active power adjustment value of each unit in the region; if the matching result of the region is insufficient regional regulation capacity, then based on the maximum output active power of each unit in the region, the active power adjustment value of each unit in the region is determined; based on the active power adjustment value of each unit in the region, the preliminary control scheme of the region is determined.

[0010] In a possible implementation, the matching result also includes active power deficit and photovoltaic utilization rate; based on the matching result of each area, the preliminary control plan is coordinated and controlled to determine the coordinated control plan of the distributed photovoltaic cluster, including: determining the area to be coordinated and the normal area based on the active power deficit and photovoltaic utilization rate of each area; based on the location information of each area to be coordinated, as well as the active power deficit and photovoltaic utilization rate of each area to be coordinated, coordinated control is performed to determine the total output active power of each area to be coordinated; based on the total output active power of each area to be coordinated, adaptive active power matching is re-performed to determine the secondary control plan of each area to be coordinated; based on the secondary control plan of each area to be coordinated and the preliminary control plan of the normal area, the coordinated control plan of the distributed photovoltaic cluster is determined.

[0011] In a possible implementation, based on the position information of each area to be coordinated, as well as the active power deficit and photovoltaic utilization rate of each area to be coordinated, coordinated regulation is performed to determine the total output active power of each area to be coordinated, including: determining the relative position relationship between each area to be coordinated based on the position information of each area to be coordinated; determining the maximum coordination capacity of each area to be coordinated based on the photovoltaic utilization rate of each area to be coordinated; the maximum coordination capacity is the maximum value of the output active power based on the preliminary regulation plan; based on the maximum coordination capacity of each area to be coordinated and the relative position relationship between each area to be coordinated, the active power deficit of each area to be coordinated is allocated to determine the secondary active power allocation value of each area to be coordinated; based on the secondary active power allocation value of each area to be coordinated and the output active power of each area to be coordinated in the preliminary regulation plan, the total output active power of each area to be coordinated is determined.

[0012] In a possible implementation, after the preliminary control scheme is coordinated and controlled based on the matching results of each sub-region and the coordinated control scheme of the distributed photovoltaic cluster is determined, it also includes: determining the output active power of each region based on the coordinated control scheme of the distributed photovoltaic cluster; determining the output reactive power of each region based on the output active power of each region and the standard power factor of the power grid; performing reactive power distribution based on the output reactive power of each region, the output active power of each photovoltaic unit in each region and the charge and discharge power of each energy storage unit, and determining the reactive power of each unit in each region; generating coordinated control instructions based on the output active power of each photovoltaic unit, the charge and discharge power of each energy storage unit, and the reactive power of each unit; and sending coordinated control instructions to each unit.

[0013] In a possible implementation, after the preliminary control scheme is coordinated and controlled based on the matching results of each sub-area and the coordinated control scheme of the distributed photovoltaic cluster is determined, it also includes: monitoring the grid operation data of each monitoring point in the target grid; calculating the voltage change rate and frequency change rate of each monitoring point based on the grid operation data of each monitoring point; performing stability analysis based on the voltage change rate and frequency change rate of each monitoring point to determine the stability analysis result, which includes normal fluctuations or abnormal fluctuations; counting the number and location information of monitoring points with abnormal fluctuations; determining whether there is an abnormal fluctuation area based on the number and location information of monitoring points with abnormal fluctuations; if there is an abnormal fluctuation area, updating the coordinated control scheme, and controlling the operation of the distributed photovoltaic cluster with the updated coordinated control scheme to ensure the stable operation of the target grid.

[0014] In one possible implementation, updating the coordinated control scheme includes: calculating the voltage deviation, voltage change rate, frequency deviation and frequency change rate in the abnormal fluctuation area; determining the reactive power adjustment amount in the abnormal fluctuation area based on the voltage deviation and the voltage change rate; determining the active power adjustment amount in the abnormal fluctuation area based on the frequency deviation and the frequency change rate; performing active power distribution and reactive power distribution based on the reactive power adjustment amount and the active power adjustment amount, and determining the output active power and output reactive power of each unit in the abnormal fluctuation area; and regenerating the coordinated control scheme based on the output active power and output reactive power of each unit in the abnormal fluctuation area.

[0015] In a second aspect, an embodiment of the present invention provides an adaptive distributed photovoltaic cluster collaborative control device, which includes: a communication module for acquiring grid operation data of each monitoring point in the target grid, and real-time operation data of the distributed photovoltaic cluster; the distributed photovoltaic cluster includes multiple photovoltaic units and multiple energy storage units; a processing module for determining the regulation capacity of each photovoltaic unit and each energy storage unit based on the real-time operation data; based on the grid operation data, performing regional division to determine the active power demand of each area of ​​the target grid; based on the active power demand of each area, and the regulation capacity of each photovoltaic unit and each energy storage unit, performing adaptive active power matching to determine the matching results and preliminary control scheme of each area; based on the matching results of each area, collaboratively controlling the preliminary control scheme to determine the collaborative control scheme of the distributed photovoltaic cluster, the collaborative control scheme including the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

[0016] In one possible implementation, the processing module is specifically used to determine the maximum output active power and the minimum output active power of each photovoltaic unit based on the maximum power generation power and the output active power of each photovoltaic unit; determine the regulation capacity of each photovoltaic unit based on the maximum output active power and the minimum output active power of each photovoltaic unit; the regulation capacity represents the regulation range of the output active power; determine the maximum output active power and the minimum output active power of each energy storage unit based on the rated capacity and the state of charge of each energy storage unit; determine the regulation capacity of each energy storage unit based on the maximum output active power and the minimum output active power of each energy storage unit.

[0017] In one possible implementation, the processing module is specifically used to divide the area based on the architecture information of the target power grid and the location information of each monitoring point, determine multiple areas, and each monitoring point in each area; determine the frequency deviation and frequency change rate of each area based on the power grid operation data of each detection point in each area; determine the active power demand of each area based on the frequency deviation and frequency change rate of each area.

[0018] In one possible implementation, the processing module is specifically used to determine the maximum output active power of each region based on the regulation capacity of each photovoltaic unit and each energy storage unit in each region; determine the matching results of each region based on the active power demand and the maximum output active power of each region; the matching results include insufficient regional regulation capacity and sufficient regional regulation capacity; for any region, if the matching result of the region is that the regional regulation capacity is sufficient, then based on the maximum output active power of each photovoltaic unit and each energy storage unit in the region, the output capacity ratio of each unit in the region is calculated; based on the output capacity ratio of each unit in the region and the active power demand of the region, active power is allocated to determine the active power adjustment value of each unit in the region; if the matching result of the region is that the regional regulation capacity is insufficient, then based on the maximum output active power of each unit in the region, the active power adjustment value of each unit in the region is determined; based on the active power adjustment value of each unit in the region, a preliminary regulation plan for the region is determined.

[0019] In one possible implementation, the processing module is specifically used to determine the areas to be coordinated and the normal areas based on the active power deficit and photovoltaic utilization rate of each area; to perform coordinated control based on the location information of each area to be coordinated, as well as the active power deficit and photovoltaic utilization rate of each area to be coordinated, to determine the total output active power of each area to be coordinated; to re-perform adaptive active power matching based on the total output active power of each area to be coordinated, to determine the secondary control plan of each area to be coordinated; and to determine the coordinated control plan of the distributed photovoltaic cluster based on the secondary control plan of each area to be coordinated and the preliminary control plan of the normal area.

[0020] In a third aspect, an embodiment of the present invention provides an electronic device, comprising a memory and a processor, the memory storing a computer program, the processor being used to call and run the computer program stored in the memory to perform the steps of the method described in the first aspect and any possible implementation method of the first aspect.

[0021] In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and wherein when the computer program is executed by a processor, the steps of the method described in the first aspect and any possible implementation method of the first aspect are implemented.

[0022] The present invention provides an adaptive distributed photovoltaic cluster coordinated control method and device. The present invention determines the regulation capacity of each photovoltaic unit and each energy storage unit in the distributed photovoltaic cluster by analyzing the real-time operation data of the distributed photovoltaic cluster, determines the active power demand in each region by performing regional division and active power demand analysis on the power grid operation data, performs adaptive active power matching on each unit by integrating the regulation capacity and active power demand of each unit, and coordinates the preliminary control scheme between the regions based on the matching results, and finally generates a coordinated control scheme. In this process, the actual operation status of each photovoltaic unit and each energy storage unit is fully considered to realize the adaptive coordinated control of the distributed photovoltaic cluster, avoid the problem of mismatch between photovoltaic power generation and power grid load, and improve the utilization rate of new energy. In addition, the present invention improves the control efficiency of the power grid through coordinated control between the regions in the distributed photovoltaic cluster, making the power grid operation more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 It is a flow chart of an adaptive distributed photovoltaic cluster coordinated control method provided by an embodiment of the present invention;

[0025] Figure 2 It is a structural schematic diagram of an adaptive distributed photovoltaic cluster collaborative control device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0027] In the description of the present invention, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" and "plurality" refer to two or more. The words "first", "second", etc. do not limit the quantity and execution order, and the words "first", "second", etc. do not limit them to be different.

[0028] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way for easy understanding.

[0029] In addition, the terms "including" and "having" and any variations thereof mentioned in the description of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or modules is not limited to the listed steps or modules, but may optionally include other steps or modules that are not listed, or may optionally include other steps or modules that are inherent to these processes, methods, products or devices.

[0030] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following will be described through specific embodiments in conjunction with the accompanying drawings of the present invention.

[0031] As described in the background art, as the proportion of distributed renewable energy gradually increases, there are problems in the current power grid such as reduced utilization of renewable energy and reduced stability of the power grid.

[0032] To solve this technical problem, Figure 1 As shown, an embodiment of the present invention provides an adaptive distributed photovoltaic cluster coordinated control method. The method includes steps S101-S106.

[0033] S101. Obtaining grid operation data of each monitoring point in the target grid and real-time operation data of the distributed photovoltaic cluster.

[0034] In the embodiment of the present application, the distributed photovoltaic cluster includes multiple photovoltaic units and multiple energy storage units.

[0035] In some embodiments, the real-time operating data includes the maximum power generation power and output active power of the photovoltaic unit, and the rated capacity and charge state of the energy storage unit.

[0036] Exemplarily, the output active power is the active power transmitted by the photovoltaic unit to the power grid.

[0037] Exemplarily, the maximum power generation is the maximum power generation that the photovoltaic unit can achieve.

[0038] Exemplarily, the state of charge of the energy storage unit is the ratio of the remaining power of the energy storage unit to the device capacity.

[0039] In some embodiments, the real-time operation data also includes the output voltage, output current, output reactive power and solar radiation intensity of the photovoltaic unit.

[0040] In some embodiments, the real-time operation data also includes the output voltage, output current, charging and discharging efficiency, etc. of the energy storage unit.

[0041] In some embodiments, the monitoring point is a key point in the power grid, such as a substation, an important load center, a photovoltaic unit access point, etc.

[0042] In some embodiments, the grid operation data includes voltage, current, frequency, active power, reactive power, and power factor.

[0043] S102: Determine the regulation capacity of each photovoltaic unit and each energy storage unit based on the real-time operation data.

[0044] As a possible implementation manner, step S102 may be specifically implemented as steps S1021 - S1024 .

[0045] S1021. Determine the maximum output active power and the minimum output active power of each photovoltaic unit based on the maximum power generation power and the output active power of each photovoltaic unit.

[0046] Exemplarily, the maximum power generation of a photovoltaic unit is determined by the physical properties of the photovoltaic unit (such as a photovoltaic panel or a photovoltaic array) and the current environmental conditions (such as light intensity, temperature). In the embodiment of the present invention, the maximum power generation of a photovoltaic unit can be obtained through a specification sheet of the photovoltaic unit or a real-time monitoring system.

[0047] Exemplarily, the output active power of the photovoltaic unit is the active power actually output by the photovoltaic unit.

[0048] Exemplarily, the maximum output power of a photovoltaic unit is the maximum power that the photovoltaic unit can output under ideal conditions (such as maximum light intensity, optimal temperature). This is usually equal to or close to its maximum power generation, but may be affected by factors such as inverter efficiency and line loss.

[0049] For example, the minimum output power of a photovoltaic unit depends on the lowest operating point or technical limit of the photovoltaic unit. In extreme cases (such as at night or under severe shadow), the output power of the photovoltaic unit may drop to zero or a very low level. However, in actual calculations, for simplicity, it can be regarded as zero or a small positive value (such as inverter starting power).

[0050] S1022. Determine the regulation capability of each photovoltaic unit based on the maximum output active power and the minimum output active power of each photovoltaic unit.

[0051] In some embodiments, the regulation capability indicates a regulation range of the output active power.

[0052] S1023. Determine the maximum output active power and the minimum output active power of each energy storage unit based on the rated capacity and the state of charge of each energy storage unit.

[0053] Exemplarily, the rated capacity of an energy storage unit is the maximum energy that the energy storage unit (such as a battery pack) can store under standard conditions.

[0054] For example, the state of charge of the energy storage unit is the ratio of the current remaining power of the energy storage unit to its rated capacity, which can be obtained through a real-time monitoring system.

[0055] Exemplarily, the maximum output active power of the energy storage unit depends on the discharge power limit of the energy storage unit and the current state of charge. When fully charged, the maximum output active power may be equal to or close to its discharge power limit; when the charge is low, the maximum output active power may be reduced to protect the battery.

[0056] Exemplarily, the minimum output active power of the energy storage unit is usually zero (indicating no discharge) for the discharging process; and the minimum output active power depends on the charging power limit and the grid conditions for the charging process.

[0057] S1024. Determine the regulation capability of each energy storage unit based on the maximum output active power and the minimum output active power of each energy storage unit.

[0058] For example, for an energy storage unit, the regulation capability is also defined as the adjustable range between the maximum output active power and the minimum output active power. However, in practical applications, since the minimum output active power is usually zero (for the discharge process), the regulation capability is mainly limited by the maximum output active power.

[0059] It should be noted that the regulation capacity of the energy storage unit is also affected by factors such as its charge and discharge rate, efficiency, temperature, and cycle life. Therefore, these factors should be considered comprehensively when determining the regulation capacity.

[0060] S103: Based on the power grid operation data, regional division is performed to determine the active power demand of each area of ​​the target power grid.

[0061] In some embodiments, the active power demand is the active power required to achieve grid stability in a certain area. The active power demand is usually related to the frequency deviation and the frequency change rate. In the power system, in order to maintain frequency stability, when the frequency is low, the active power output of the generator needs to be increased; conversely, when the frequency is high, the active power output of the generator needs to be reduced.

[0062] As a possible implementation manner, step S103 may be specifically implemented as steps S1031 - S1033 .

[0063] S1031. Based on the architecture information of the target power grid and the location information of each monitoring point, perform regional division to determine multiple regions and each monitoring point in each region.

[0064] In some embodiments, the architecture information of the power grid includes the topology of the power grid, and the connection relationship between devices such as transmission lines and transformers.

[0065] In some embodiments, the location information of the monitoring point is the geographical location or electrical location of the monitoring point in the power grid.

[0066] In some embodiments, the area division may divide the power grid into multiple areas according to factors such as electrical connection relationships, spatial distance, load distribution, etc. The division may be performed using a clustering algorithm (such as K-means), graph theory methods, or expert experience.

[0067] S1032. Determine the frequency deviation and frequency change rate of each area based on the power grid operation data of each detection point in each area.

[0068] In some embodiments, the frequency deviation is the difference between the real-time frequency of the power grid and the standard frequency of the power grid. The standard frequency of the power grid may be the industrial frequency.

[0069] In some embodiments, the frequency change rate is the change amount of the frequency per unit time, indicating the change trend of the frequency over time.

[0070] Exemplarily, the embodiment of the present invention may determine the frequency deviation based on the following formula.

[0071] Δf=f measured -f nominal ;

[0072] Where: Δf represents the frequency deviation, f measured Indicates the actual frequency measured at the monitoring point. nominal Indicates the standard frequency of the power grid.

[0073] Exemplarily, the embodiment of the present invention may determine the frequency change rate based on the following formula.

[0074]

[0075] in: Indicates the rate of change of frequency. current Indicates the frequency at the current moment. previous represents the frequency of the previous moment. Δt represents the time interval between the current moment and the previous moment.

[0076] S1033. Determine active power demand of each area based on the frequency deviation and frequency change rate of each area.

[0077] Exemplarily, the embodiment of the present invention can perform PID calculation through the following steps to determine the active power demand of each area.

[0078] A1. Determine the PID control parameters of each area based on the grid capacity of each area.

[0079] In some embodiments, the PID control parameters include a proportional parameter, an integral parameter, and a derivative parameter.

[0080] For example, the proportional parameter (P) directly affects the response speed of the controller. For larger capacity areas, the proportional coefficient can be appropriately increased to speed up the response speed.

[0081] For example, the integral parameter (I) is used to eliminate steady-state errors, but too large an integral effect may cause system oscillation. For larger capacity areas, the integral coefficient can be appropriately reduced to avoid over-regulation.

[0082] Exemplary, differential parameter (D): The differential term is used to suppress the frequency change rate and improve the stability of the system. For larger capacity areas, the differential coefficient can be appropriately increased to enhance the anti-interference ability.

[0083] In some embodiments, the grid capacity of a region is the maximum carrying capacity of the grid in the region.

[0084] A2. Calculate the active power demand of each area based on the PID control parameters of each area, as well as the frequency deviation and frequency change rate of each area.

[0085] Exemplarily, the embodiment of the present invention can determine the active power demand by the following formula.

[0086]

[0087] Where ΔP(t) is the active power demand at time t. e(t) is the frequency deviation at time t. K p is the scale parameter. Ki is the integration parameter. K d is the differential parameter. is the rate of change of frequency at time t.

[0088] S104: Based on the active power demand of each region and the regulation capability of each photovoltaic unit and each energy storage unit, adaptive active power matching is performed to determine the matching result and preliminary regulation plan of each region.

[0089] As a possible implementation manner, step S104 may be specifically implemented as steps S1041 - S1046 .

[0090] S1041. Determine the maximum output active power of each region based on the regulation capability of each photovoltaic unit and each energy storage unit in each region.

[0091] It should be noted that the total regional regulation capacity is calculated as follows: for each region, the regulation capacities of all photovoltaic units and energy storage units in the region are added together. The regulation capacity of a photovoltaic unit is the difference between its maximum output active power and its minimum output active power (usually the minimum output active power can be regarded as 0 or a very small value), and the regulation capacity of an energy storage unit depends on its remaining capacity and charging and discharging rate. The maximum output active power of a region is the total power of all units in the region at full power or maximum discharge. This is usually equal to the sum of the maximum output active power of all units in the region (for photovoltaic units) or the sum of the maximum discharge power of energy storage units at their current state of charge.

[0092] S1042: Determine a matching result for each area based on the active power demand and the maximum output active power of each area.

[0093] In some embodiments, the matching results include insufficient regional regulation capability and sufficient regional regulation capability.

[0094] Exemplarily, for each region, its active power demand is compared with the maximum output active power. If the maximum output active power is greater than or equal to the active power demand, the matching result is "regional regulation capability is sufficient"; if the maximum output active power is less than the active power demand, the matching result is "regional regulation capability is insufficient".

[0095] In some embodiments, the matching result also includes active power deficit and photovoltaic utilization rate.

[0096] Exemplarily, for each region, the active power deficit refers to the difference between the active power demand of the region and the maximum output active power based on the current photovoltaic unit and energy storage unit. If the maximum output active power is less than the active power demand, the difference is the active power deficit.

[0097] For example, the photovoltaic utilization rate refers to the ratio of the active power actually generated by the photovoltaic unit to the maximum active power that it can theoretically generate under given conditions (such as light intensity, temperature, etc.). This can reflect the power generation efficiency and utilization of the photovoltaic unit.

[0098] S1043. For any region, if the matching result of the region is that the regional regulation capacity is sufficient, then based on the maximum output active power of each photovoltaic unit and each energy storage unit in the region, the output capacity ratio of each unit in the region is calculated.

[0099] S1044: Based on the output capacity ratio of each unit in the area and the active power demand of the area, active power allocation is performed to determine the active power adjustment value of each unit in the area.

[0100] For example, for each photovoltaic unit and energy storage unit, the proportion of its maximum output active power to the total maximum output active power of the region is calculated. According to the active power demand of the region and the output capacity ratio of each unit, the active power demand is proportionally distributed to each unit. This can be achieved by simple multiplication, that is, the active power adjustment value of each unit = regional active power demand * output capacity ratio of the unit.

[0101] S1045. If the matching result of the area is that the regional regulation capability is insufficient, then based on the maximum output active power of each unit in the area, determine the active power adjustment value of each unit in the area.

[0102] S1046. Determine a preliminary control plan for the area based on the active power adjustment value of each unit in the area.

[0103] S105. Based on the matching results of each area, the preliminary control plan is coordinated and controlled to determine the coordinated control plan of the distributed photovoltaic cluster.

[0104] In the embodiment of the present application, the coordinated control scheme includes the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

[0105] As a possible implementation manner, step S105 may be specifically implemented as steps S1051 - S1054 .

[0106] S1051. Based on the active power shortage and photovoltaic utilization rate of each area, determine the area to be coordinated and the normal area.

[0107] For example, in order to distinguish between the area to be coordinated and the normal area, the embodiment of the present invention can set thresholds for active power shortage and photovoltaic utilization rate. These thresholds can be set according to the actual situation and needs of the power grid.

[0108] Exemplarily, for each area, if its active power shortage exceeds the set active power shortage threshold, or the photovoltaic utilization rate is lower than the set photovoltaic utilization rate threshold (indicating that the photovoltaic unit is not fully utilized or there are other problems), the area is determined as an area to be coordinated; otherwise, it is determined as a normal area.

[0109] S1052: Based on the location information of each area to be coordinated, as well as the active power shortage and photovoltaic utilization rate of each area to be coordinated, coordinated control is performed to determine the total output active power of each area to be coordinated.

[0110] It should be noted that the embodiments of the present invention may take into account the geographical location relationship between the areas to be coordinated, as well as their connection with other key nodes in the power grid (such as substations, transmission lines, etc.). A coordinated control strategy is formulated based on location information, active power shortage and photovoltaic utilization. This may include calling active power support from other areas, adjusting the charging and discharging strategy of energy storage units, optimizing the power generation efficiency of photovoltaic units, etc. Under the guidance of the coordinated control strategy, the total output active power of each area to be coordinated is determined to meet its active power demand and reduce the active power shortage.

[0111] Exemplarily, step S1052 may be specifically implemented as steps B1-B4.

[0112] B1. Based on the position information of each area to be coordinated, determine the relative position relationship between the areas to be coordinated.

[0113] Exemplarily, the embodiment of the present invention may calculate the straight-line distance between the areas to be coordinated based on the position information of the areas to be coordinated, and determine the relative position relationship based on the straight-line distance.

[0114] As another example, the embodiment of the present invention may calculate the transmission line distance between the areas to be coordinated based on the location information of the areas to be coordinated, and determine the relative position relationship based on the transmission line distance.

[0115] Exemplarily, the relative position relationship can be represented as a straight-line distance matrix, or a directional diagram, or a transmission line distance matrix.

[0116] B2. Based on the photovoltaic utilization rate of each area to be coordinated, determine the maximum coordination capacity of each area to be coordinated.

[0117] In some embodiments, the maximum coordination capability is the maximum value of the active power output based on the preliminary control scheme.

[0118] For example, the embodiments of the present invention can analyze the photovoltaic utilization rate of each area to be coordinated and evaluate the additional active output capacity that can be added under current conditions. Combined with the output active power and photovoltaic utilization rate in the preliminary control plan, the maximum active power that can be output by each area without affecting the safety and stability of the equipment is calculated.

[0119] B3. Based on the maximum coordination capability of each area to be coordinated and the relative position relationship between each area to be coordinated, the active power shortage of each area to be coordinated is allocated to determine the secondary active power allocation value of each area to be coordinated.

[0120] Exemplarily, the embodiments of the present invention can formulate an allocation strategy for active power shortages based on the maximum coordination capabilities and relative positional relationships (such as distance, grid topology, etc.) of each region. For example, the needs of regions with shorter distances or closer grid connections are preferentially met. Allocation calculation: According to the allocation strategy, the total active power shortage is allocated to each area to be coordinated, and the secondary active power allocation value of each area is determined.

[0121] B4. Based on the secondary active power distribution value of each area to be coordinated and the output active power of each area to be coordinated in the preliminary control plan, determine the total output active power of each area to be coordinated.

[0122] Exemplarily, in the embodiment of the present invention, the output active power in the preliminary control scheme of each area to be coordinated can be added to the secondary active power allocation value to obtain the final total output active power of each area.

[0123] S1053: Based on the total output active power of each area to be coordinated, adaptive active power matching is re-performed to determine a secondary control plan for each area to be coordinated.

[0124] S1054. Determine a coordinated control plan for the distributed photovoltaic cluster based on the secondary control plan of each area to be coordinated and the preliminary control plan of the normal area.

[0125] It should be noted that the embodiment of the present invention can integrate the secondary control schemes of each area to be coordinated and the preliminary control schemes of the normal areas to form an overall coordinated control scheme for the distributed photovoltaic cluster. The integrated coordinated control scheme is optimized and verified to ensure that it can meet the supply and demand balance, stability, safety and economy requirements of the power grid. After verification, the coordinated control scheme is implemented, the active power adjustment instructions of each unit are executed, and the coordinated operation of the distributed photovoltaic cluster is realized.

[0126] The present invention provides an adaptive distributed photovoltaic cluster coordinated control method, which determines the regulation capacity of each photovoltaic unit and each energy storage unit in the distributed photovoltaic cluster by analyzing the real-time operation data of the distributed photovoltaic cluster, determines the active demand in each region by performing regional division and active demand analysis on the power grid operation data, performs adaptive active matching on each unit based on the regulation capacity and active demand of each unit, and coordinates the preliminary control scheme between the regions based on the matching results, and finally generates a coordinated control scheme. In this process, the actual operation status of each photovoltaic unit and each energy storage unit is fully considered to realize the adaptive coordinated control of the distributed photovoltaic cluster, avoid the problem of mismatch between photovoltaic power generation and power grid load, and improve the utilization rate of new energy. In addition, the present invention improves the control efficiency of the power grid through coordinated control between the regions in the distributed photovoltaic cluster, making the power grid operation more stable.

[0127] Optionally, the adaptive distributed photovoltaic cluster coordinated control method provided by the embodiment of the present invention further includes steps S201-S205.

[0128] S201. Determine the output active power of each region based on a coordinated control scheme of a distributed photovoltaic cluster.

[0129] S202: Determine the output reactive power of each area based on the output active power of each area and the standard power factor of the power grid.

[0130] S203, based on the output reactive power of each area, the output active power of each photovoltaic unit in each area, and the charge and discharge power of each energy storage unit, reactive power distribution is performed to determine the reactive power of each unit in each area.

[0131] S204: Generate a coordinated control instruction based on the output active power of each photovoltaic unit, the charging and discharging power of each energy storage unit, and the reactive power of each unit.

[0132] In some embodiments, the coordinated control instructions include the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit, as well as the reactive power of each unit.

[0133] S205. Send coordinated control instructions to each unit.

[0134] In this way, the embodiment of the present invention can comprehensively calculate the active power and reactive power of each unit in the distributed photovoltaic cluster, thereby ensuring both frequency stability and voltage stability in the power grid, and further improving the stability of the power grid.

[0135] Optionally, the adaptive distributed photovoltaic cluster coordinated control method provided by the embodiment of the present invention further includes steps S301-S306.

[0136] S301. Monitor the grid operation data of each monitoring point in the target grid.

[0137] S302: Calculate the voltage change rate and frequency change rate of each monitoring point based on the power grid operation data of each monitoring point.

[0138] For example, the embodiments of the present invention can use a differential method or a sliding window method to calculate the rate of change of the voltage and frequency at each monitoring point. The differential method usually calculates the voltage or frequency difference between adjacent time points and divides it by the time interval to obtain the rate of change; the sliding window method calculates the average value of the voltage or frequency within a fixed time window, and calculates the difference between the average values ​​between adjacent windows to obtain the rate of change.

[0139] S303: Perform stability analysis based on the voltage change rate and frequency change rate of each monitoring point to determine a stability analysis result.

[0140] In some embodiments, stable analysis results include normal fluctuations or abnormal fluctuations.

[0141] Exemplarily, the embodiment of the present invention can set normal fluctuation thresholds of voltage change rate and frequency change rate according to the grid operation standard and historical data. The voltage change rate and frequency change rate of each monitoring point are compared with the set threshold to determine whether the grid is in a stable state. If the change rate exceeds the threshold, it is considered that there is an abnormal fluctuation.

[0142] S304. Count the number and location information of monitoring points with abnormal fluctuations.

[0143] S305: Determine whether there is an abnormal fluctuation area based on the number and location information of the monitoring points of abnormal fluctuation.

[0144] For example, if there are multiple monitoring points with abnormal fluctuations in a certain area, and these monitoring points are adjacent in geographical location or closely connected in the grid topology, then the area is considered to be an abnormal fluctuation area.

[0145] S306. If there is an abnormal fluctuation area, the coordinated control scheme is updated, and the operation of the distributed photovoltaic cluster is controlled by the updated coordinated control scheme to ensure stable operation of the target power grid.

[0146] Exemplarily, the embodiment of the present invention may update the collaborative control scheme based on the following steps.

[0147] C1. Calculate the voltage deviation, voltage change rate, frequency deviation and frequency change rate in the abnormal fluctuation area.

[0148] C2. Determine the reactive power adjustment amount in the abnormal fluctuation area based on the voltage deviation and voltage change rate.

[0149] C3. Determine the active power adjustment amount in the abnormal fluctuation area based on the frequency deviation and the frequency change rate.

[0150] C4. Based on the reactive power adjustment amount and the active power adjustment amount, active power distribution and reactive power distribution are performed to determine the output active power and output reactive power of each unit in the abnormal fluctuation area.

[0151] C5. Regenerate a coordinated control plan based on the output active power and output reactive power of each unit in the abnormal fluctuation area.

[0152] In this way, the embodiment of the present invention can monitor the voltage change rate and frequency change rate of the power grid when coordinating the control of the distributed photovoltaic cluster, identify abnormal fluctuation areas, and update the coordinated control plan to further improve the stability of the power grid.

[0153] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0154] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0155] Figure 2 The schematic diagram of the structure of an adaptive distributed photovoltaic cluster coordinated control device provided by an embodiment of the present invention is shown. The coordinated control device 400 includes a communication module 401 and a processing module 402 .

[0156] The communication module 401 is used to obtain the grid operation data of each monitoring point in the target grid and the real-time operation data of the distributed photovoltaic cluster; the distributed photovoltaic cluster includes multiple photovoltaic units and multiple energy storage units;

[0157] Processing module 402 is used to determine the regulation capacity of each photovoltaic unit and each energy storage unit based on real-time operation data; perform regional division based on power grid operation data to determine the active power demand of each area of ​​the target power grid; perform adaptive active power matching based on the active power demand of each area and the regulation capacity of each photovoltaic unit and each energy storage unit to determine the matching results and preliminary control scheme of each area; perform coordinated control on the preliminary control scheme based on the matching results of each area to determine the coordinated control scheme of the distributed photovoltaic cluster, and the coordinated control scheme includes the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

[0158] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. An adaptive distributed photovoltaic cluster coordinated control method, characterized in that: include: Obtaining grid operation data of each monitoring point in the target grid and real-time operation data of a distributed photovoltaic cluster; the distributed photovoltaic cluster includes multiple photovoltaic units and multiple energy storage units; Based on the real-time operation data, determining the regulation capacity of each photovoltaic unit and each energy storage unit; Based on the power grid operation data, regional division is performed to determine the active power demand of each area of ​​the target power grid; Based on the active power demand of each region and the regulation capability of each photovoltaic unit and each energy storage unit, adaptive active power matching is performed to determine the matching results and preliminary regulation plan for each region; Based on the matching results of each area, the preliminary control scheme is coordinated and controlled to determine a coordinated control scheme for the distributed photovoltaic cluster, wherein the coordinated control scheme includes the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

2. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1 is characterized in that: The real-time operation data includes the maximum power generation and output active power of the photovoltaic unit, the rated capacity and charge state of the energy storage unit; The determining the regulation capacity of each photovoltaic unit and each energy storage unit based on the real-time operation data includes: Based on the maximum power generation power and output active power of each photovoltaic unit, the maximum output active power and the minimum output active power of each photovoltaic unit are determined; Based on the maximum output active power and the minimum output active power of each photovoltaic unit, the regulation capacity of each photovoltaic unit is determined; the regulation capacity represents the regulation range of the output active power; Based on the rated capacity and state of charge of each energy storage unit, determine the maximum output active power and the minimum output active power of each energy storage unit; Based on the maximum output active power and the minimum output active power of each energy storage unit, the regulation capacity of each energy storage unit is determined.

3. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1 is characterized in that: The method of dividing the regions based on the power grid operation data and determining the active power demand of each region of the target power grid includes: Based on the architecture information of the target power grid and the location information of each monitoring point, the region is divided to determine multiple regions and each monitoring point in each region; Based on the grid operation data of each detection point in each area, determine the frequency deviation and frequency change rate of each area; Based on the frequency deviation and frequency change rate of each area, the active power demand of each area is determined.

4. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1 is characterized in that: Based on the active power demand of each region and the regulation capability of each photovoltaic unit and each energy storage unit, adaptive active power matching is performed to determine the matching results and preliminary regulation scheme of each region, including: Based on the regulation capabilities of each photovoltaic unit and each energy storage unit in each area, the maximum output active power of each area is determined; Based on the active power demand and the maximum output active power of each region, determining the matching result of each region; the matching result includes insufficient regional regulation capacity and sufficient regional regulation capacity; For any region, if the matching result of the region is that the regional regulation capacity is sufficient, the output capacity ratio of each unit in the region is calculated based on the maximum output active power of each photovoltaic unit and each energy storage unit in the region; Based on the output capacity ratio of each unit in the area and the active power demand of the area, active power allocation is performed to determine the active power adjustment value of each unit in the area; If the matching result of the area is that the regional regulation capacity is insufficient, then based on the maximum output active power of each unit in the area, the active power adjustment value of each unit in the area is determined; Based on the active power adjustment value of each unit in the area, determine the preliminary control plan for the area.

5. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1 is characterized in that: The matching result also includes active power shortage and photovoltaic utilization rate; Based on the matching results of each region, the preliminary control scheme is coordinated and controlled to determine the coordinated control scheme of the distributed photovoltaic cluster, including: Based on the active power shortage and photovoltaic utilization rate of each region, determine the areas to be coordinated and the normal areas; Based on the location information of each area to be coordinated, as well as the active power shortage and photovoltaic utilization rate of each area to be coordinated, coordinated regulation is carried out to determine the total output active power of each area to be coordinated; Based on the total output active power of each area to be coordinated, adaptive active power matching is re-performed to determine the secondary control plan for each area to be coordinated; Based on the secondary control schemes of the areas to be coordinated and the preliminary control schemes of the normal areas, a coordinated control scheme of the distributed photovoltaic cluster is determined.

6. The adaptive distributed photovoltaic cluster coordinated control method according to claim 5 is characterized in that: The coordinated control is performed based on the location information of each area to be coordinated, as well as the active power shortage and photovoltaic utilization rate of each area to be coordinated, to determine the total output active power of each area to be coordinated, including: Based on the position information of each area to be coordinated, determine the relative position relationship between each area to be coordinated; Based on the photovoltaic utilization rate of each area to be coordinated, determining the maximum coordination capacity of each area to be coordinated; the maximum coordination capacity is the maximum value of the output active power based on the preliminary control plan; Based on the maximum coordination capability of each area to be coordinated and the relative position relationship between the areas to be coordinated, the active power shortage of each area to be coordinated is allocated to determine the secondary active power allocation value of each area to be coordinated; Based on the secondary active power distribution value of each area to be coordinated and the output active power of each area to be coordinated in the preliminary control plan, the total output active power of each area to be coordinated is determined.

7. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1, characterized in that: After the preliminary control scheme is coordinated and controlled based on the matching results of each sub-region to determine the coordinated control scheme of the distributed photovoltaic cluster, the method further includes: Based on the coordinated control scheme of distributed photovoltaic clusters, determine the output active power of each area; Based on the output active power of each area and the standard power factor of the power grid, determine the output reactive power of each area; Based on the output reactive power of each area, the output active power of each photovoltaic unit in each area and the charging and discharging power of each energy storage unit, reactive power distribution is performed to determine the reactive power of each unit in each area; Generate coordinated control instructions based on the output active power of each photovoltaic unit, the charging and discharging power of each energy storage unit, and the reactive power of each unit; The coordinated control instruction is sent to each unit.

8. The adaptive distributed photovoltaic cluster coordinated control method according to claim 1, characterized in that: After the preliminary control scheme is coordinated and controlled based on the matching results of each sub-region to determine the coordinated control scheme of the distributed photovoltaic cluster, the method further includes: Monitor the grid operation data of each monitoring point in the target grid; Based on the grid operation data of each monitoring point, the voltage change rate and frequency change rate of each monitoring point are calculated; Based on the voltage change rate and frequency change rate of each monitoring point, a stability analysis is performed to determine a stability analysis result, wherein the stability analysis result includes a normal fluctuation or an abnormal fluctuation; Count the number and location information of monitoring points with abnormal fluctuations; Based on the number and location information of the monitoring points of abnormal fluctuations, determine whether there is an abnormal fluctuation area; If there are areas of abnormal fluctuations, the coordinated control scheme is updated, and the operation of the distributed photovoltaic cluster is controlled by the updated coordinated control scheme to ensure stable operation of the target power grid.

9. The adaptive distributed photovoltaic cluster coordinated control method according to claim 8, characterized in that: The updated coordinated control scheme includes: Calculating the voltage deviation, voltage change rate, frequency deviation and frequency change rate in the abnormal fluctuation area; Determining a reactive power adjustment amount in the abnormal fluctuation area based on the voltage deviation and the voltage change rate; Determining the active power adjustment amount in the abnormal fluctuation area based on the frequency deviation and the frequency change rate; Based on the reactive power adjustment amount and the active power adjustment amount, active power distribution and reactive power distribution are performed to determine the output active power and output reactive power of each unit in the abnormal fluctuation area; Based on the output active power and output reactive power of each unit in the abnormal fluctuation area, a coordinated control scheme is regenerated.

10. An adaptive distributed photovoltaic cluster coordinated control device, characterized in that: include: A communication module, used to obtain grid operation data of each monitoring point in the target grid and real-time operation data of a distributed photovoltaic cluster; the distributed photovoltaic cluster includes a plurality of photovoltaic units and a plurality of energy storage units; A processing module is used to determine the regulation capacity of each photovoltaic unit and each energy storage unit based on the real-time operation data; perform regional division based on the power grid operation data to determine the active power demand of each area of ​​the target power grid; perform adaptive active power matching based on the active power demand of each area and the regulation capacity of each photovoltaic unit and each energy storage unit to determine the matching results and preliminary control scheme of each area; based on the matching results of each area, perform coordinated control on the preliminary control scheme to determine the coordinated control scheme of the distributed photovoltaic cluster, the coordinated control scheme including the output active power of each photovoltaic unit and the charging and discharging power of each energy storage unit.

11. The adaptive distributed photovoltaic cluster coordinated control device according to claim 10, characterized in that: The processing module is specifically used to determine the maximum output active power and the minimum output active power of each photovoltaic unit based on the maximum power generation power and the output active power of each photovoltaic unit; based on the maximum output active power and the minimum output active power of each photovoltaic unit, determine the regulation capacity of each photovoltaic unit; the regulation capacity represents the regulation range of the output active power; Based on the rated capacity and state of charge of each energy storage unit, determine the maximum output active power and the minimum output active power of each energy storage unit; Based on the maximum output active power and the minimum output active power of each energy storage unit, the regulation capacity of each energy storage unit is determined.

12. The adaptive distributed photovoltaic cluster coordinated control device according to claim 10, characterized in that: The processing module is specifically used to divide the area based on the architecture information of the target power grid and the location information of each monitoring point, determine multiple areas, and each monitoring point in each area; determine the frequency deviation and frequency change rate of each area based on the power grid operation data of each detection point in each area; determine the active power demand of each area based on the frequency deviation and frequency change rate of each area.

13. The adaptive distributed photovoltaic cluster coordinated control device according to claim 10, characterized in that: The processing module is specifically used to determine the maximum output active power of each region based on the regulation capacity of each photovoltaic unit and each energy storage unit in each region; determine the matching result of each region based on the active power demand and the maximum output active power of each region; the matching result includes insufficient regional regulation capacity and sufficient regional regulation capacity; for any region, if the matching result of the region is sufficient regional regulation capacity, then based on the maximum output active power of each photovoltaic unit and each energy storage unit in the region, calculate the output capacity ratio of each unit in the region; based on the output capacity ratio of each unit in the region and the active power demand of the region, perform active power allocation and determine the active power adjustment value of each unit in the region; if the matching result of the region is insufficient regional regulation capacity, then based on the maximum output active power of each unit in the region, determine the active power adjustment value of each unit in the region; Based on the active power adjustment value of each unit in the area, determine the preliminary control plan for the area.

14. The adaptive distributed photovoltaic cluster coordinated control device according to claim 10, characterized in that: The processing module is specifically used to determine the area to be coordinated and the normal area based on the active power shortage and photovoltaic utilization rate of each area; Based on the location information of each area to be coordinated, as well as the active power shortage and photovoltaic utilization rate of each area to be coordinated, coordinated regulation is carried out to determine the total output active power of each area to be coordinated; Based on the total output active power of each area to be coordinated, adaptive active power matching is re-performed to determine the secondary control plan of each area to be coordinated; based on the secondary control plan of each area to be coordinated and the preliminary control plan of the normal area, the coordinated control plan of the distributed photovoltaic cluster is determined.

15. An electronic device, characterized in that: The electronic device comprises a memory and a processor, wherein the memory stores a computer program, and the processor is used to call and run the computer program stored in the memory to execute the steps of the method according to any one of claims 1 to 9.

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