Distributed photovoltaic cooperative voltage regulation method and device for power distribution network

Abstract

The invention discloses a distributed photovoltaic cooperative voltage regulation method, device and equipment for a power distribution network and a medium. The method comprises the following steps: monitoring whether the voltage of each node of the power distribution network is out-of-limit; if the out-of-limit node voltage exists, based on the out-of-limit node voltage, according to a photovoltaic inverter droop control strategy, determining a reactive power variable quantity required by voltage regulation; obtaining the active and reactive voltage sensitivity of the distributed photovoltaic nodes; on the basis of the reactive power variable quantity, according to a cooperative game distributed photovoltaic reactive power regulation strategy, distributing reactive power regulation quantity; after the distributed photovoltaic response, if the voltage of each node is out of limit still, determining the total active adjusting quantity required to be adjusted; and based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active adjusting quantity required to be adjusted, distributing the active adjusting quantity according to a cooperative game distributed photovoltaic active adjusting strategy. According to the method, the voltage of the power distribution network can be flexibly adjusted, and the voltage out-of-limit problem caused by distributed photovoltaic access is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of distributed photovoltaic power generation control technology, and in particular to a method and device for distributed photovoltaic coordinated voltage regulation in a distribution network. Background Art

[0002] As climate effects and energy crises gradually intensify, photovoltaic (PV) power generation has developed rapidly due to its abundant resources and clean and pollution-free advantages. At the same time, distributed photovoltaic power generation systems are increasingly connected to the distribution network, which brings opportunities and challenges to the new power system. Due to the intermittent and random nature of photovoltaic power generation, the flow of the distribution network changes from one-way to two-way flow, resulting in local voltage fluctuations and even voltage over-limit problems. When distributed photovoltaics have surplus output during the day, power will be returned, causing the voltage to exceed the upper limit. When the load is high at night, photovoltaics have no output, causing the voltage to exceed the lower limit. In addition, photovoltaic output is affected by solar irradiance, temperature, and weather, resulting in voltage fluctuations in the distribution network. The above problems have brought challenges to the safe and stable operation of the power grid.

[0003] Most existing studies focus on the reactive voltage control strategy of photovoltaic inverters, but the impact of different node voltages is not considered enough. In addition, the impact of reactive regulation on voltage is not as great as that of active regulation. Therefore, it is worth considering how to develop a distributed photovoltaic coordinated voltage regulation method for distribution networks that can take into account both active and reactive regulation. Summary of the invention

[0004] Based on this, it is necessary to propose a distributed photovoltaic coordinated voltage regulation method for distribution network to address the above problems.

[0005] The present application provides a method for coordinated voltage regulation of distributed photovoltaic power distribution networks, the method comprising:

[0006] Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit;

[0007] If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit;

[0008] Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes;

[0009] Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy;

[0010] The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0011] If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0012] Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

[0013] In some implementations, determining the reactive power change required for voltage regulation based on the over-limit node voltage and according to the photovoltaic inverter droop control strategy specifically includes:

[0014] According to ΔQ i =Q adj,i -Q 0,i =K(U ref -U 0,i ) determines the reactive power change required for voltage regulation, where Q adj,i is the reactive power target value of distributed photovoltaic i; Q 0,i The voltage of distributed photovoltaic node i is U 0,i The corresponding reactive power when U ref is the reference voltage, K is the droop coefficient, ΔQ i The reactive power change required for voltage regulation.

[0015] In some implementations, the obtaining of the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node specifically includes:

[0016] according to Obtain the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node, where S P,i and S Q，i They represent the active voltage sensitivity and reactive voltage sensitivity at the i-th node respectively; V0 is the node voltage at the head end of the line; R i and X i are the line impedance and reactance values ​​between node i-1 and node i respectively.

[0017] In some implementations, the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation are used to allocate reactive regulation according to a cooperative game distributed photovoltaic reactive regulation strategy, specifically including:

[0018] The voltage deviation index function weighted by the distributed photovoltaic capacity is used as the characteristic function;

[0019] Based on cooperative game, the Shapley value is compensated and improved according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated reactive improved Shapley value is determined;

[0020] The reactive power variation is distributed as reactive regulation amount according to the reactive improved Shapley value of each distributed photovoltaic node.

[0021] In some embodiments, the characteristic function is:

[0022] Where E is the set of distributed photovoltaic grid-connected nodes; U i,t is the voltage value of node i at time t; U N is the rated voltage; i (E) is the weighted function of distributed photovoltaic capacity, is the rated capacity of distributed photovoltaic at node i.

[0023] In some embodiments, the method of compensating and improving the reactive Shapley value based on the cooperative game according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and determining the compensated reactive improved Shapley value includes:

[0024] according to Determine the Shapley value, where is the Shapley value of the i-th distributed photovoltaic; S is the alliance combination including the i-th distributed photovoltaic; ω i (|S|) is the weight of the ith distributed photovoltaic in the alliance S; v(S) is the characteristic function, that is, the maximum benefit that the alliance S can ensure; v(S-{i}) is the maximum benefit after removing the ith distributed photovoltaic in the alliance S; n is the number of members participating in the cooperative game; |S| is the number of members of the alliance S;

[0025] The weight assigned to each distributed photovoltaic is determined as: W Q,i =(W Q,1 ,W Q,1 ,...,W Q,n ),in

[0026] Based on the reactive voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. Q,i for:

[0027] Based on the weight W of each distributed photovoltaic in the cooperative game Q,i and the characteristic function, according to Determine the reactive compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0028] According to the Shapley value and the reactive power compensation amount for the Shapley value, the reactive power improvement Shapley value after compensation is determined to be

[0029] In some implementations, the performing reactive regulation amount distribution on the reactive power variation amount according to the reactive improved Shapley value of each distributed photovoltaic node includes:

[0030] according to Determine the reactive power regulation amount that each distributed photovoltaic system should bear, where Q pv,i is the reactive power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the i-th distributed photovoltaic node; N is the number of distributed photovoltaics, and R is the set of voltage-exceeding nodes.

[0031] In some implementations, determining the total active power adjustment amount to be adjusted includes:

[0032] According to ΣP all =ΣP PV -ΣP Load Determine the total active power regulation required, where ΣP Load is the total active power of each node load, ΣP PV is the total active power output of each distributed photovoltaic node, ΣP all The total active power regulation required.

[0033] In some embodiments, the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated are allocated according to a cooperative game distributed photovoltaic active regulation strategy, including:

[0034] Based on cooperative game, the Shapley value is compensated and improved according to the active voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated active improved Shapley value is determined;

[0035] The total active regulation amount required to be regulated is allocated according to the active improved Shapley value of each distributed photovoltaic node.

[0036] In some implementations, the active Shapley value is compensated and improved based on the cooperative game according to the distributed photovoltaic node active voltage sensitivity and the characteristic function, and the compensated active improved Shapley value is determined, including:

[0037] The weight assigned to each distributed photovoltaic is determined as: W P,i=(W P,1 ,W P,1 ,...,W P,n ),in

[0038] Based on the active voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. P,i for:

[0039] Based on the weight W of each distributed photovoltaic in the cooperative game P,i and the characteristic function, according to Determine the active compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0040] According to the Shapley value and the active power compensation amount for the Shapley value, the active power improved Shapley value after compensation is determined as

[0041] In some embodiments, the active power regulation amount is distributed according to the active power improved Shapley value of each distributed photovoltaic node to the total active power regulation amount required for regulation, including:

[0042] according to Determine the active power regulation amount that each distributed photovoltaic system should bear, where P pv,i is the active power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the active power of the i-th distributed photovoltaic node.

[0043] In some embodiments, the method further comprises:

[0044] according to For distributed photovoltaics participating in active power regulation, economic compensation is allocated based on the contribution of each node, where P PV (t) is the function of the active power of distributed photovoltaic participating in active power reduction corresponding to the adjustment time t; I price (t) is the function of electricity price with respect to time t, is the improved Shapley value of the active power of the i-th distributed photovoltaic node, N is the number of distributed photovoltaics participating in active power regulation, M i Provide economic compensation for each distributed photovoltaic entity.

[0045] In some implementations, if the reactive power regulation amount that a distributed photovoltaic system should bear exceeds its regulation margin, the maximum reactive power is output.

[0046] The present application also provides a distributed photovoltaic coordinated voltage regulation device for a distribution network, the device comprising:

[0047] A node voltage monitoring module, which is used to monitor the voltage of each node of the distribution network in real time and determine whether the voltage of each node exceeds the limit;

[0048] A reactive power determination module, wherein the reactive power determination module is used to determine the reactive power change required for voltage regulation based on the node voltage that exceeds the limit and according to the droop control strategy of the photovoltaic inverter if there is a node voltage that exceeds the limit;

[0049] A sensitivity acquisition module, wherein the sensitivity acquisition module is used to acquire the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node;

[0050] A reactive regulation amount allocation module, the reactive regulation amount allocation module is used to allocate reactive regulation amount according to a cooperative game distributed photovoltaic reactive regulation strategy based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation;

[0051] A reactive power regulation amount response module, wherein the reactive power regulation amount response module is used for the distributed photovoltaic to respond according to the distributed reactive power regulation amount and to determine whether the voltage of each node is still over the limit;

[0052] An active power regulation amount determination module, the active power regulation amount determination module is used to determine the total active power regulation amount that needs to be adjusted if there is still an over-limit node voltage;

[0053] An active regulation quantity allocation module is used to allocate active regulation quantity based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation quantity required to be adjusted according to the cooperative game distributed photovoltaic active regulation strategy.

[0054] The embodiment of the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the following steps:

[0055] Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit;

[0056] If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit;

[0057] Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes;

[0058] Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy;

[0059] The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0060] If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0061] Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

[0062] The present application also provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the processor executes the following steps:

[0063] Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit;

[0064] If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit;

[0065] Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes;

[0066] Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy;

[0067] The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0068] If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0069] Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

[0070] The embodiments of the present application have the following beneficial effects:

[0071] In the distributed photovoltaic coordinated voltage regulation method for distribution network provided in the embodiment of the present application, the voltage of each node of the distribution network is monitored in real time to determine whether the voltage of each node is out of limit; if there is a node voltage that is out of limit, the power change required for voltage regulation is obtained based on the out-of-limit node voltage; based on the voltage sensitivity of the distributed photovoltaic nodes, according to the cooperative game distributed photovoltaic regulation strategy, the power change required for voltage regulation is allocated to achieve coordinated voltage control and voltage over-limit management, which can take into account the fairness and economic compensation of active and reactive power regulation, optimize and adjust reactive and active power distribution in real time, effectively suppress voltage over-limit, improve power quality, and ensure safe and stable operation of the distribution network. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0073] in:

[0074] Figure 1 A schematic diagram of a process of a distributed photovoltaic coordinated voltage regulation method for a distribution network in one embodiment;

[0075] Figure 2 A schematic diagram of voltage over-limit control effect provided in an embodiment;

[0076] Figure 3 A structural diagram of a distributed photovoltaic coordinated voltage regulation device for a distribution network in an embodiment;

[0077] Figure 4 is a schematic diagram of the structure of a computer device in one embodiment;

[0078] Figure 5 Schematic diagram of the structure of a computer-readable storage medium in one embodiment. DETAILED DESCRIPTION

[0079] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0080] In the embodiment of the present application, a distributed photovoltaic coordinated voltage regulation method for a distribution network is provided. Figure 1 , Figure 1 It is a flow chart of a method for coordinated voltage regulation of distributed photovoltaic power generation in a distribution network in an embodiment; the method for coordinated voltage regulation of distributed photovoltaic power generation in a distribution network includes steps S1 to S7.

[0081] Step S1, real-time monitoring of the voltage of each node of the distribution network to determine whether the voltage of each node exceeds the limit;

[0082] Specifically, the voltage value monitored in real time is compared with the set voltage upper limit and lower limit. If the voltage value exceeds the upper limit or is lower than the lower limit, it is determined that the voltage at the node exceeds the limit.

[0083] Step S2, if there is an over-limit node voltage, based on the over-limit node voltage, determine the reactive power change required for voltage regulation according to the photovoltaic inverter droop control strategy;

[0084] Specifically, after determining that the voltage at the node exceeds the limit, the reactive power change amount that needs to be adjusted at each voltage-exceeding node is calculated respectively, and the reactive power adjustment change amount is calculated according to the photovoltaic inverter voltage droop control strategy.

[0085] In some implementations, determining the reactive power change required for voltage regulation based on the over-limit node voltage and according to the photovoltaic inverter droop control strategy specifically includes:

[0086] According to ΔQ i =Q adj,i -Q 0,i =K(U ref -U 0,i ) determines the reactive power change required for voltage regulation, where Q adj,i is the reactive power target value of distributed photovoltaic i; Q 0,i The voltage of distributed photovoltaic node i is U 0,i The corresponding reactive power when U ref is the reference voltage, K is the droop coefficient, ΔQ i The reactive power change required for voltage regulation.

[0087] Step S3, obtaining the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node;

[0088] In some implementations, the obtaining of the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node specifically includes:

[0089] according to Obtain the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node, where S P，i and S Q，i They represent the active voltage sensitivity and reactive voltage sensitivity at the i-th node respectively; V0 is the node voltage at the head end of the line; Ri and X i are the line impedance and reactance values ​​between node i-1 and node i respectively.

[0090] Step S4, allocating reactive regulation amount according to the cooperative game distributed photovoltaic reactive regulation strategy based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation;

[0091] Specifically, the degree of influence of photovoltaic inverters at different nodes on voltage control is different, which can be regarded as a "cooperative game" process. By utilizing the reactive voltage sensitivity of distributed photovoltaic nodes to construct weight factors, the voltage deviation index function weighted by distributed photovoltaic capacity is used as the characteristic function. Based on the idea of ​​cooperative game, the reactive improved Shapley value of distributed photovoltaic nodes is solved to distribute the reactive regulation amount.

[0092] In some implementations, the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation are used to allocate reactive regulation according to a cooperative game distributed photovoltaic reactive regulation strategy, specifically including:

[0093] Step S41, using a voltage deviation index function weighted by distributed photovoltaic capacity as a characteristic function;

[0094] In some embodiments, the characteristic function is:

[0095] Where E is the set of distributed photovoltaic grid-connected nodes; U i,t is the voltage value of node i at time t; U N is the rated voltage; i (E) is the weighted function of distributed photovoltaic capacity, is the rated capacity of distributed photovoltaic at node i.

[0096] Step S42, based on cooperative game, the Shapley value is compensated and improved according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated reactive improved Shapley value is determined;

[0097] In some embodiments, the method of compensating and improving the reactive Shapley value based on the cooperative game according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and determining the compensated reactive improved Shapley value includes:

[0098] according to Determine the Shapley value, where is the Shapley value of the i-th distributed photovoltaic; S is the alliance combination including the i-th distributed photovoltaic; ω i (|S|) is the weight of the ith distributed photovoltaic in the alliance S; v(S) is the characteristic function, that is, the maximum benefit that the alliance S can ensure; v(S-{i}) is the maximum benefit after removing the ith distributed photovoltaic in the alliance S; n is the number of members participating in the cooperative game; |S| is the number of members of the alliance S;

[0099] The weight assigned to each distributed photovoltaic is determined as: W Q,i =(W Q,1 ,W Q,1 ,...,W Q,n ),in

[0100] The reactive voltage sensitivity of the distributed photovoltaic node is processed by data standardization as the weight W of each distributed photovoltaic in the cooperative game. Q,i , the data standardization formula is:

[0101] Based on the weight W of each distributed photovoltaic in the cooperative game Q,i and the characteristic function, according to Determine the reactive compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0102] According to the Shapley value and the reactive power compensation amount for the Shapley value, the reactive power improvement Shapley value after compensation is determined to be

[0103] Step S43: performing reactive regulation distribution on the reactive power variation according to the reactive improved Shapley value of each distributed photovoltaic node.

[0104] In some implementations, the performing reactive regulation amount distribution on the reactive power variation amount according to the reactive improved Shapley value of each distributed photovoltaic node includes:

[0105] according to Determine the reactive power regulation amount that each distributed photovoltaic system should bear, where Q pv,i is the reactive power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the i-th distributed photovoltaic node; N is the number of distributed photovoltaics, and R is the set of voltage-exceeding nodes.

[0106] In some implementations, if the reactive power regulation amount that a distributed photovoltaic system should bear exceeds its regulation margin, the maximum reactive power is output.

[0107] Step S5, the distributed photovoltaic system responds according to the allocated reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0108] Step S6, if there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0109] In some implementations, determining the total active power adjustment amount to be adjusted includes:

[0110] According to ΣP all =ΣP PV -ΣP Load Determine the total active power regulation required, where ΣP Load is the total active power of each node load, ΣP PV is the total active power output of each distributed photovoltaic node, ΣP all The total active power regulation required.

[0111] Step S7, based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to the cooperative game distributed photovoltaic active regulation strategy.

[0112] Specifically, the degree of influence of photovoltaic inverters at different nodes on voltage control is different, which can be regarded as a "cooperative game" process. By utilizing the active voltage sensitivity of distributed photovoltaic nodes to construct weight factors, the voltage deviation index function weighted by distributed photovoltaic capacity is used as the characteristic function. Based on the idea of ​​cooperative game, the active improved Shapley value of distributed photovoltaic nodes is solved to distribute the active regulation amount.

[0113] In some embodiments, the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated are allocated according to a cooperative game distributed photovoltaic active regulation strategy, including:

[0114] Step S71, based on cooperative game, the Shapley value is compensated and improved according to the active voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated active improved Shapley value is determined;

[0115] In some implementations, the active Shapley value is compensated and improved based on the cooperative game according to the distributed photovoltaic node active voltage sensitivity and the characteristic function, and the compensated active improved Shapley value is determined, including:

[0116] The weight assigned to each distributed photovoltaic is determined as: W P,i =(W P,1 ,W P,1 ,...,W P,n ),in

[0117] Based on the active voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. P,i for:

[0118] Based on the weight W of each distributed photovoltaic in the cooperative game P,i and the characteristic function, according to Determine the active compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0119] According to the Shapley value and the active power compensation amount for the Shapley value, the active power improved Shapley value after compensation is determined as

[0120] Step S72: allocating active power regulation amount to the total active power regulation amount required to be regulated according to the active power improved Shapley value of each distributed photovoltaic node.

[0121] In some embodiments, according to Determine the active power regulation amount that each distributed photovoltaic system should bear, where P pv,i is the active power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the active power of the i-th distributed photovoltaic node.

[0122] In some embodiments, the method further comprises:

[0123] according to For distributed photovoltaics participating in active power regulation, economic compensation is allocated based on the contribution of each node, where P PV (t) is the function of the active power of distributed photovoltaic participating in active power reduction corresponding to the adjustment time t; I price (t) is the function of electricity price with respect to time t, is the improved Shapley value of the active power of the i-th distributed photovoltaic node, N is the number of distributed photovoltaics participating in active power regulation, M i Provide economic compensation for each distributed photovoltaic entity.

[0124] The method of the present application is further described below in conjunction with specific embodiments:

[0125] See also Figure 2 The schematic diagram of the voltage over-limit control effect provided in an embodiment shown is a simulation case provided by an example of the present invention. Before the control, the voltage at the distribution network node exceeded the upper limit. After the control is performed by the method proposed in the present invention, it can be seen from the figure that the voltage of each node has returned to normal. Therefore, it is explained that the distributed photovoltaic collaborative voltage regulation method for the distribution network provided in the present application can achieve collaborative voltage regulation and voltage over-limit control, improve the power quality, and ensure the safe and stable operation of the distribution network.

[0126] By adopting the technical solution of this embodiment, the voltage sensitivity of distributed photovoltaic nodes is used to construct a weight factor, the voltage deviation index function weighted by the distributed photovoltaic capacity is used as the characteristic function, and the improved Shapley value of the distributed photovoltaic nodes is solved based on the idea of ​​cooperative game, and the reactive and active power regulation quantities are allocated, which can achieve coordinated voltage regulation and voltage over-limit management. The technical solution of this embodiment solves the distribution problem of distributed photovoltaic active and reactive power regulation quantities based on the idea of ​​cooperative game, which can take into account the active voltage regulation and reactive voltage regulation of distributed photovoltaics, solves the fairness and effectiveness of power distribution, and takes into account the economic losses caused to distributed photovoltaic owners by active power reduction. The technical solution of this embodiment provides an economic compensation method that takes into account both the rationality of distribution and the contribution of governance.

[0127] In the embodiment of the present application, a distributed photovoltaic coordinated voltage regulation device for a distribution network is provided. Figure 3 , Figure 3 In one embodiment, a distributed photovoltaic collaborative voltage regulation device for a distribution network includes a node voltage monitoring module 201, a reactive power determination module 202, a sensitivity acquisition module 203, a reactive regulation amount allocation module 204, a reactive regulation amount response module 205, an active regulation amount determination module 206 and an active regulation amount allocation module 207.

[0128] The node voltage monitoring module 201 is configured to monitor the voltage of each node of the power distribution network in real time and determine whether the voltage of each node exceeds the limit;

[0129] The reactive power determination module 202 is configured to determine the reactive power change required for voltage regulation according to the photovoltaic inverter droop control strategy based on the node voltage that has crossed the limit if there is a node voltage that has crossed the limit;

[0130] The sensitivity acquisition module 203 is configured to acquire the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node;

[0131] The reactive regulation amount allocation module 204 is configured to allocate reactive regulation amount according to the cooperative game distributed photovoltaic reactive regulation strategy based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation;

[0132] The reactive power regulation amount response module 205 is configured to respond to the distributed distributed photovoltaic according to the distributed reactive power regulation amount and determine whether the voltage of each node is still over the limit;

[0133] The active power regulation amount determination module 206 is configured to determine the total active power regulation amount that needs to be adjusted if there is still a node voltage that exceeds the limit;

[0134] The active power regulation amount allocation module 207 is configured to allocate the active power regulation amount according to the cooperative game distributed photovoltaic active power regulation strategy based on the active power voltage sensitivity of the distributed photovoltaic nodes and the total active power regulation amount required to be adjusted.

[0135] In some embodiments, the reactive power determination module 202 is further configured to determine the reactive power according to ΔQ i =Q adj,i -Q 0,i =K(U ref -U 0,i ) determines the reactive power change required for voltage regulation, where Q adj,i is the reactive power target value of distributed photovoltaic i; Q 0,i The voltage of distributed photovoltaic node i is U 0,i The corresponding reactive power when U ref is the reference voltage, K is the droop coefficient, ΔQ i The reactive power change required for voltage regulation.

[0136] In some embodiments, the sensitivity acquisition module 203 is further configured to Obtain the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node, where S P，i and S Q，i They represent the active voltage sensitivity and reactive voltage sensitivity at the i-th node respectively; V0 is the node voltage at the head end of the line; R i and X i are the line impedance and reactance values ​​between node i-1 and node i respectively.

[0137] In some embodiments, the reactive regulation amount allocation module 204 is further configured to use a voltage deviation index function weighted by distributed photovoltaic capacity as a characteristic function;

[0138] Based on cooperative game, the Shapley value is compensated and improved according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated reactive improved Shapley value is determined;

[0139] The reactive power variation is distributed as reactive regulation amount according to the reactive improved Shapley value of each distributed photovoltaic node.

[0140] In some implementations, the reactive adjustment amount allocation module 204 is further configured to determine the characteristic function as:

[0141] Where E is the set of distributed photovoltaic grid-connected nodes; U i,t is the voltage value of node i at time t; U N is the rated voltage; i (E) is the weighted function of distributed photovoltaic capacity, is the rated capacity of distributed photovoltaic at node i.

[0142] In some embodiments, the reactive power regulation amount allocation module 204 is further configured to Determine the Shapley value, where is the Shapley value of the i-th distributed photovoltaic; S is the alliance combination including the i-th distributed photovoltaic; ω i (|S|) is the weight of the ith distributed photovoltaic in the alliance S; v(S) is the characteristic function, that is, the maximum benefit that the alliance S can ensure; v(S-{i}) is the maximum benefit after removing the ith distributed photovoltaic in the alliance S; n is the number of members participating in the cooperative game; |S| is the number of members of the alliance S;

[0143] The weight assigned to each distributed photovoltaic is determined as: W Q,i =(W Q,1 ,W Q,1 ,...,W Q,n ),in

[0144] Based on the reactive voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. Q,i for:

[0145] Based on the weight W of each distributed photovoltaic in the cooperative game Q,i and the characteristic function, according to Determine the reactive compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0146] According to the Shapley value and the reactive power compensation amount for the Shapley value, the reactive power improvement Shapley value after compensation is determined to be

[0147] In some embodiments, the reactive power regulation amount allocation module 204 is further configured to Determine the reactive power regulation amount that each distributed photovoltaic system should bear, where Q pv,i is the reactive power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the i-th distributed photovoltaic node; N is the number of distributed photovoltaics, and R is the set of voltage-exceeding nodes.

[0148] In some embodiments, the active power adjustment amount determination module 206 is further configured to determine the active power adjustment amount according to ∑P all =∑P PV -∑P Load Determine the total active power regulation required, where ∑P Load is the total active power of each node load, ∑P PV is the total active power output of each distributed photovoltaic node, ∑P all The total active power regulation required.

[0149] In some embodiments, the active regulation amount determination module 206 is further configured to compensate and improve the Shapley value based on the active voltage sensitivity of the distributed photovoltaic node and the characteristic function based on a cooperative game, and determine the compensated active improved Shapley value;

[0150] The total active regulation amount required to be regulated is allocated according to the active improved Shapley value of each distributed photovoltaic node.

[0151] In some embodiments, the active power regulation amount determination module 206 is further configured to determine the weight assigned to each distributed photovoltaic: P,i =(W P,1 ,W P,1 ,...,W P,n ),in

[0152] Based on the active voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. P,i for:

[0153] Based on the weight W of each distributed photovoltaic in the cooperative game P,i and the characteristic function, according to Determine the active compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function;

[0154] According to the Shapley value and the active power compensation amount for the Shapley value, the active power improved Shapley value after compensation is determined as

[0155] In some embodiments, the active regulation amount allocation module 207 is further configured to Determine the active power regulation amount that each distributed photovoltaic system should bear, where P pv,i is the active power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the active power of the i-th distributed photovoltaic node.

[0156] In some embodiments, the distributed photovoltaic coordinated voltage regulation device for the distribution network further includes an economic compensation allocation module 208, and the economic compensation allocation module 208 is configured to:

[0157] according to For distributed photovoltaics participating in active power regulation, economic compensation is allocated based on the contribution of each node, where P PV (t) is the function of the active power of distributed photovoltaic participating in active power reduction corresponding to the adjustment time t; I price (t) is the function of electricity price with respect to time t, is the improved Shapley value of the active power of the i-th distributed photovoltaic node, N is the number of distributed photovoltaics participating in active power regulation, M i Provide economic compensation for each distributed photovoltaic entity.

[0158] In some implementations, the reactive power regulation allocation module 204 is further configured to output maximum reactive power if the reactive power regulation amount to be borne by a distributed photovoltaic system exceeds its regulation margin.

[0159] For other details of implementing the above technical solution in each module in the distributed photovoltaic coordinated voltage regulation device of the distribution network, please refer to the description of the distributed photovoltaic coordinated voltage regulation method of the distribution network provided above, which will not be repeated here.

[0160] In an embodiment of the present application, a computer device is provided. Figure 4 , Figure 43 is a schematic diagram of the structure of a computer device in an embodiment. The device includes a memory 301 and a processor 302. The memory 301 stores a computer program. When the computer program is executed by the processor 302, the processor 302 performs the following steps:

[0161] Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit;

[0162] If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit;

[0163] Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes;

[0164] Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy;

[0165] The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0166] If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0167] Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

[0168] Among them, the processor 302 can also be called a CPU (Central Processing Unit), and the processor 302 may be an integrated circuit chip with signal processing capabilities; the processor 302 can also be a general-purpose processor, DSP (Digital Signal Process), ASIC (Application Specific Integrated Circuit), FPGA (Field Programmable Gate Array) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, among which the general-purpose processor can be a microprocessor or the processor 302 can also be any conventional processor, etc.

[0169] In an embodiment of the present application, a computer readable storage medium is provided. Figure 5 , Figure 5The structure diagram of a computer-readable storage medium in an embodiment is a schematic diagram, on which a readable computer program 401 is stored; wherein the computer program 401 may be stored in the above storage medium in the form of a software product, and includes a number of instructions for causing a computer device (which may be a personal computer, a server machine, or a network device, etc.) or a processor to perform the following steps:

[0170] Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit;

[0171] If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit;

[0172] Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes;

[0173] Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy;

[0174] The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit;

[0175] If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted;

[0176] Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

[0177] The aforementioned storage media include: U disk, mobile hard disk, magnetic disk or CD, ROM (Read-Only Memory), RAM (Random Access Memory) and other media that can store program code, or terminal devices such as computers, service machines, mobile phones, and tablets.

[0178] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0179] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0180] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A distributed photovoltaic coordinated voltage regulation method for a distribution network, characterized in that , the method comprises: Monitor the voltage of each node of the distribution network in real time to determine whether the voltage of each node exceeds the limit; If there is a node voltage that exceeds the limit, the reactive power change required for voltage regulation is determined according to the droop control strategy of the photovoltaic inverter based on the node voltage that exceeds the limit; Obtain active voltage sensitivity and reactive voltage sensitivity of distributed photovoltaic nodes; Based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power change, the reactive regulation amount is allocated according to the cooperative game distributed photovoltaic reactive regulation strategy; The distributed photovoltaic system responds according to the distributed reactive power regulation amount to determine whether the voltage of each node is still over the limit; If there is still a node voltage that exceeds the limit, determine the total active power adjustment amount that needs to be adjusted; Based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount required to be regulated, the active regulation amount is allocated according to a cooperative game distributed photovoltaic active regulation strategy.

2. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 1, characterized in that: The step of determining the reactive power change required for voltage regulation based on the over-limit node voltage and according to the photovoltaic inverter droop control strategy specifically includes: According to ΔQ i =Q adj,i -Q 0,i =K(U ref -U 0,i ) determines the reactive power change required for voltage regulation, where Q adj,i is the reactive power target value of distributed photovoltaic i; Q 0,i The voltage of distributed photovoltaic node i is U 0,i The corresponding reactive power when U ref is the reference voltage, K is the droop coefficient, ΔQ i The reactive power change required for voltage regulation.

3. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 1, characterized in that: The obtaining of the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node specifically includes: according to Obtain the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node, where S P，i and S Q，i They represent the active voltage sensitivity and reactive voltage sensitivity at the i-th node respectively; V0 is the node voltage at the head end of the line; R i and X i are the line impedance and reactance values ​​between node i-1 and node i respectively.

4. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 2 or 3, characterized in that: The reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation are based on the cooperative game distributed photovoltaic reactive regulation strategy, and the reactive regulation amount is allocated, specifically including: The voltage deviation index function weighted by the distributed photovoltaic capacity is used as the characteristic function; Based on cooperative game, the Shapley value is compensated and improved according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated reactive improved Shapley value is determined; The reactive power variation is distributed as reactive regulation amount according to the reactive improved Shapley value of each distributed photovoltaic node.

5. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 4, characterized in that: The characteristic function is: Where E is the set of distributed photovoltaic grid-connected nodes; U i,t is the voltage value of node i at time t; U N is the rated voltage; i (E) is the weighted function of distributed photovoltaic capacity, is the rated capacity of distributed photovoltaic at node i.

6. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 5, characterized in that: The method of compensating and improving the reactive Shapley value based on the cooperative game according to the reactive voltage sensitivity of the distributed photovoltaic node and the characteristic function, and determining the compensated reactive improved Shapley value, comprises: according to Determine the Shapley value, where is the Shapley value of the i-th distributed photovoltaic; S is the alliance combination including the i-th distributed photovoltaic; ω i (|S|) is the weight of the ith distributed photovoltaic in the alliance S; v(S) is the characteristic function, that is, the maximum benefit that the alliance S can ensure; v(S-{i}) is the maximum benefit after removing the ith distributed photovoltaic in the alliance S; n is the number of members participating in the cooperative game; |S| is the number of members of the alliance S; The weight assigned to each distributed photovoltaic is determined as: W Q,i =(W Q,1 ,W Q,1 ,...,W Q,n ),in Based on the reactive voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. Q,i for: Based on the weight W of each distributed photovoltaic in the cooperative game Q,i and the characteristic function, according to Determine the reactive compensation amount for the Shapley value, wherein, v(i) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function; According to the Shapley value and the reactive power compensation amount for the Shapley value, the reactive power improvement Shapley value after compensation is determined to be 7. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 6, characterized in that: The performing reactive regulation amount distribution on the reactive power variation amount according to the reactive improved Shapley value of each distributed photovoltaic node includes: according to Determine the reactive power regulation amount that each distributed photovoltaic system should bear, where Q pv,i is the reactive power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the i-th distributed photovoltaic node; N is the number of distributed photovoltaics, and R is the set of voltage-exceeding nodes.

8. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 7, characterized in that: The determining of the total active power adjustment amount to be adjusted includes: According to ∑P all =ΣP PV -∑P Load Determine the total active power regulation required, where ∑P Load is the total active power of each node load, ΣP PV is the total active power output of each distributed photovoltaic node, ∑P all The total active power regulation required.

9. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 8, characterized in that: The active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation amount to be regulated are based on the cooperative game distributed photovoltaic active regulation strategy, and the active regulation amount is allocated, including: Based on cooperative game, the Shapley value is compensated and improved according to the active voltage sensitivity of the distributed photovoltaic node and the characteristic function, and the compensated active improved Shapley value is determined; The total active regulation amount required to be regulated is allocated according to the active improved Shapley value of each distributed photovoltaic node.

10. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 9, characterized in that: The method of compensating and improving the active Shapley value based on the cooperative game according to the active voltage sensitivity of the distributed photovoltaic node and the characteristic function, and determining the compensated active improved Shapley value, includes: The weight assigned to each distributed photovoltaic is determined as: W P,i =(W P,1 ,W P,1 ,...,W P,n ),in Based on the active voltage sensitivity of the distributed photovoltaic nodes, the weight W of each distributed photovoltaic in the cooperative game is determined according to data standardization processing. P,i for: Based on the weight W of each distributed photovoltaic in the cooperative game P,i and the characteristic function, according to Determine the active compensation amount for the Shapley value, wherein, v(i ) is the characteristic value of the i-th distributed photovoltaic, obtained by the characteristic function; According to the Shapley value and the active power compensation amount for the Shapley value, the active power improved Shapley value after compensation is determined as 11. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 10, characterized in that: The active power regulation amount distribution of the total active power regulation amount required to be regulated according to the active power improved Shapley value of each distributed photovoltaic node includes: according to Determine the active power regulation amount that each distributed photovoltaic system should bear, Among them, P pv,i is the active power regulation amount undertaken by the i-th distributed photovoltaic node; is the improved Shapley value of the active power of the i-th distributed photovoltaic node.

12. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 11, characterized in that: The method further comprises: according to For distributed photovoltaics participating in active power regulation, economic compensation is allocated based on the contribution of each node, where P PV (t) is the function of the active power of distributed photovoltaic participating in active power reduction corresponding to the adjustment time t; I price (t) is the function of electricity price with respect to time t, is the improved Shapley value of the active power of the i-th distributed photovoltaic node, N is the number of distributed photovoltaics participating in active power regulation, M i Provide economic compensation for each distributed photovoltaic entity.

13. The method for coordinated voltage regulation of distributed photovoltaic power distribution network according to claim 7, characterized in that: If the reactive power regulation amount that a distributed photovoltaic system should bear exceeds its regulation margin, the maximum reactive power will be output.

14. A distributed photovoltaic coordinated voltage regulation device for a distribution network, characterized in that: The device comprises: A node voltage monitoring module, which is used to monitor the voltage of each node of the distribution network in real time and determine whether the voltage of each node exceeds the limit; A reactive power determination module, wherein the reactive power determination module is used to determine the reactive power change required for voltage regulation based on the node voltage that exceeds the limit and according to the droop control strategy of the photovoltaic inverter if there is a node voltage that exceeds the limit; A sensitivity acquisition module, wherein the sensitivity acquisition module is used to acquire the active voltage sensitivity and reactive voltage sensitivity of the distributed photovoltaic node; A reactive regulation amount allocation module, the reactive regulation amount allocation module is used to allocate reactive regulation amount according to a cooperative game distributed photovoltaic reactive regulation strategy based on the reactive voltage sensitivity of the distributed photovoltaic node and the reactive power variation; A reactive power regulation amount response module, wherein the reactive power regulation amount response module is used for the distributed photovoltaic to respond according to the distributed reactive power regulation amount and to determine whether the voltage of each node is still over the limit; An active power regulation amount determination module, the active power regulation amount determination module is used to determine the total active power regulation amount that needs to be adjusted if there is still an over-limit node voltage; An active regulation quantity allocation module is used to allocate active regulation quantity based on the active voltage sensitivity of the distributed photovoltaic nodes and the total active regulation quantity required to be adjusted according to the cooperative game distributed photovoltaic active regulation strategy.

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