A group control method and system of distributed power supply and a medium

Abstract

The application discloses a kind of group control method, system and medium of distributed power supply;It is related to power supply group tuning technical field;The present application aims at providing a kind of group control method, system and medium of distributed power supply, on the basis of existing hierarchical distribution architecture group tuning group control technology, improvement on method, realize main station for access distributed power supply global control and distributed energy local autonomy cooperation without changing the original operation mode of power grid, with multiple power consumption hierarchical partition optimization mode, dampen tidal flow fluctuation and overvoltage, support the safe and stable operation of large power grid;At the same time when generating automatic group control strategy, control target power is determined according to the association relationship between distributed power supply resources and different power consumption levels, to avoid the problem of resource allocation conflict when different power consumption levels exceed limit at the same time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power supply group control, and particularly relates to a group control method and system of distributed power supply and a medium. BACKGROUND

[0002] After the distributed power supply is connected to the distribution network, it needs to have adjustable and controllable functions, wherein the distributed power supply connected to low voltage is realized through intelligent fusion terminal to achieve the autonomy of the transformer area, and the distributed power supply connected to medium voltage has the function of receiving and executing relevant control requirements.

[0003] In view of the problems of over-limit of power flow and active regulation caused by a large number of distributed power supplies, the master station needs to be connected through province, city and user, and through the distributed power supply group control technology, the local consumption of distributed power supply and the reasonable distribution of power flow are taken as the goal, and the visible and controllable regulation and control strategy of the distributed power supply is realized.

[0004] The prior art has a way of hierarchical distribution architecture of power grid, which modularly divides the network and load, and respectively controls the group of sub-modules of power supply, but in the case of a large number of distributed power supplies, there are still phenomena of unreasonable distribution of power flow, energy waste and resource conflict. SUMMARY

[0005] The technical problem to be solved by the present application is that the prior art has a way of hierarchical distribution architecture of power grid, which modularly divides the network and load, and respectively controls the group of sub-modules of power supply, but in the case of a large number of distributed power supplies, there are still phenomena of unreasonable distribution of power flow, energy waste and resource conflict; the present application aims to provide a group control method and system of distributed power supply and a medium, which improves the method on the basis of the existing hierarchical distribution architecture group control technology, realizes the global control of the master station for the connected distributed power supply and the local autonomy of the distributed energy without changing the original operation mode of the power grid, supports the safe and stable operation of the large power grid by suppressing the power flow fluctuation and overvoltage in a multi-power consumption hierarchical partition optimization mode; and when the automatic group control strategy is generated, the target power supply is determined according to the association relationship between the distributed power supply resource and different power consumption levels, so as to avoid the problem of resource allocation conflict when different power consumption levels exceed the limit at the same time.

[0006] The present application is realized by the following technical scheme:

[0007] The present application provides a group control method of distributed power supply, comprising:

[0008] Dividing the target power grid connected with the distributed power supply into a plurality of power consumption levels, and respectively configuring the group control calculation model of each power consumption level;

[0009] The load parameter input of each power consumption level is monitored to correspond to a group control calculation model, and an automatic group control strategy is generated in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power supply according to the association between the distributed power supply resource and different power consumption levels;

[0010] The corresponding control target power supply is adjusted according to the automatic group control strategy.

[0011] The working principle of the present scheme is as follows: the prior art divides the network and load into modules in a hierarchical distribution architecture, and respectively controls the sub-module power supply, but there are still phenomena of unreasonable power flow distribution and energy waste under a large number of distributed power supplies; the present application aims to provide a group control method, system and medium for distributed power supply, which improves the method on the basis of the existing hierarchical distribution architecture group control technology, realizes the global control of the main station for the access distributed power supply and the local autonomy and cooperation of the distributed energy without changing the original operation mode of the power grid, and supports the safe and stable operation of the large power grid in the multi-power consumption level partition optimization mode to suppress power flow fluctuation and overvoltage.

[0012] In addition, when designing the hierarchical architecture, the network and load are generally divided into modules, and under the hierarchical architecture of this division method (including the power consumption level division method of the present scheme), there is a problem that the same distributed power supply resource may be associated with multiple different power consumption levels, so that when the different power consumption levels exceed the limit, the process of generating the automatic group control strategy may cause distributed power supply resource conflict or vacancy, resulting in unbalanced power flow fluctuation suppression; the present scheme considers this problem and specially introduces a group control target selection mechanism to determine the control target power supply according to the association between the distributed power supply resource and different power consumption levels, to avoid the problem of distributed power supply resource conflict or vacancy in the process of generating the automatic group control strategy when different power consumption levels exceed the limit at the same time, and to support the safe and stable operation of the power grid in the multi-power consumption level optimization combined with the group control target selection mechanism.

[0013] At the same time, when generating the automatic group control strategy, the control target power supply is determined according to the association between the distributed power supply resource and different power consumption levels, which avoids the problem of resource allocation conflict when different power consumption levels exceed the limit at the same time.

[0014] A further optimization scheme is that the target power grid with access to the distributed power supply is divided into multiple power consumption levels, and a group control calculation model of each power consumption level is configured; the method includes:

[0015] The target power grid with access to the distributed power supply is divided into: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, field station power consumption level and regional power consumption level;

[0016] Statistical distributed power resources of each power consumption level;

[0017] Based on the distributed power resources of each power consumption level and the topology structure of the power consumption level, a power flow calculation model and a response capacity calculation model are configured respectively.

[0018] Further optimization scheme is that the monitoring of the load parameter input of each power consumption level corresponds to the group control calculation model, and the automatic group control strategy is generated combined with the group control target selection mechanism; including method:

[0019] The power consumption level with a response capacity S≠0 is taken as a target power consumption level;

[0020] According to the association relationship between the distributed power resources and each target power consumption level, the distributed power resource group of each target power consumption level is optimized;

[0021] The control target power is selected from the optimized distributed power resource group.

[0022] Further optimization scheme is that the distributed power resource group of each target power consumption level is optimized according to the association relationship between the distributed power resources and each target power consumption level; including method:

[0023] The cross power resource is selected from all distributed power resource groups; the cross power resource includes distributed power resources belonging to at least two distributed power resource groups;

[0024] The association degree characteristic value of the cross power resource and the target power consumption level is calculated;

[0025] The target power consumption level A with the highest association degree is obtained, and the current cross power resource is only reserved in the distributed power resource group of the target power consumption level A.

[0026] Further optimization scheme is that the association degree characteristic value of the cross power resource and the target power consumption level is calculated; including method:

[0027] The association degree characteristic value C of the cross power resource i and the target power consumption level j is calculated according to the following formula: ij :

[0028]

[0029] S eij Satisfies:

[0030]

[0031] i∈(1,m)

[0032] Wherein, n i Indicates the total number of target power consumption levels of the cross power resource i; k indicates the association coefficient; Mij Q represents the degree of matching between the output capacity and demand response capacity of cross-source power resource i; ij This indicates the historical number of times cross-power resource i has participated in the regulation of the target power consumption level; S ij S represents the output capacity of cross-source power resource i. eij This represents the estimated demand response capacity of cross-source power resource i;

[0033] S eaj This represents the estimated demand response capacity of distributed power resource a in the distributed power resource group corresponding to the target power consumption level j, when S ea When it is a non-cross-power resource, S ea Equal to the output capacity of distributed power resource a; when S ea When it is a cross-power resource, S ea It equals the remaining capacity after deducting the output capacity of all non-cross-connected power resources from the response capacity S; m represents the total number of distributed power resources in the distributed power resource group corresponding to the target power consumption level j.

[0034] A further optimization scheme is as follows: the step of selecting the target power source from the optimized distributed power resource group includes the following method:

[0035] Configure the number N of target power supplies to be controlled;

[0036] Randomly select N distributed power resources from the optimized distributed power resource group, and calculate the total number of times the N distributed power resources have been adjusted and the total output capacity.

[0037] The N distributed power resources with the largest total output capacity (N≥ preset total output capacity threshold Ne) and the smallest total number of adjustments are selected as the control target power sources.

[0038] This solution also provides a distributed power supply group control system for implementing the above-mentioned distributed power supply group control method; the system includes:

[0039] The partitioning module is used to divide the target power grid connected to the distributed power source into multiple power consumption levels and configure the group control calculation model for each power consumption level; the power consumption levels include: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, substation power consumption level and regional power consumption level;

[0040] A multi-level automatic control module is used to monitor the load parameters of each power consumption level and input them into the corresponding group control calculation model. It generates an automatic group control strategy by combining the group control target selection mechanism. The group control target selection mechanism determines the target power supply to be controlled based on the correlation between distributed power resources and different power consumption levels.

[0041] The self-defined control module is configured to filter one or more control target power sources to generate a self-defined control strategy.

[0042] The maintenance safety group control module is configured to filter one or more control target power sources of a target maintenance area to generate a maintenance control strategy.

[0043] The adjustment module is configured to adjust the corresponding control target power source according to the automatic group control strategy, the self-defined control strategy and the maintenance control strategy.

[0044] The history record management module is configured to record the adjustment process and the adjustment feedback result.

[0045] Further, the self-defined control module and the maintenance safety group control module each include a searching unit, a selecting unit and a parameter configuration unit.

[0046] The searching unit is configured to search for the specified one or more control target power sources.

[0047] The selecting unit is configured to select the specified one or more control target power sources.

[0048] The parameter configuration unit is configured to configure the parameter operation of the specified one or more control target power sources, and the parameter operation includes parameter modification and parameter calling.

[0049] Further, the adjustment module includes:

[0050] The instruction generation unit is configured to generate the automatic group control strategy, the self-defined control strategy and the maintenance control strategy into an E file as a control instruction.

[0051] The data isolation unit is configured to transmit the control instruction generated by the total control center to the intelligent fusion terminal of the sub-control center.

[0052] The intelligent fusion terminal is configured to send the control instruction to the inverter of each control target power source through HPLC.

[0053] The present application also provides a computer readable medium having a computer program stored thereon, and the computer program is executed by a processor to implement the group control method of the distributed power source.

[0054] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0055] 1. The application provides a group control method, system and medium for distributed power supply; based on the existing hierarchical distributed architecture group control technology, the method is improved, the global control of the main station for the access distributed power supply and the local autonomy of the distributed energy are cooperated without changing the original operation mode of the power grid, the power flow fluctuation and overvoltage are suppressed in the multi-power consumption hierarchical partition optimization mode, and the safe and stable operation of the large power grid is supported; meanwhile, when the automatic group control strategy is generated, the control target power supply is determined according to the association relationship between the distributed power supply resources and different power consumption levels, and the problem of resource allocation conflict caused by the simultaneous over-limit of different power consumption levels is avoided.

[0056] 2. The application provides a group control method, system and medium for distributed power supply; a group control target selection mechanism is introduced, the control target power supply is determined according to the association relationship between the distributed power supply resources and different power consumption levels, the problem of distributed power supply resource conflict or vacancy in the process of generating the automatic group control strategy is avoided, the group control target selection mechanism is combined with the multi-power consumption hierarchical optimization mode, the power flow fluctuation and overvoltage are suppressed, and the safe and stable operation of the power grid is supported. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical scheme of the exemplary embodiments of the application, the drawings needed in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of the drawings. In the drawings:

[0058] Figure 1 It is a group control method flow diagram for distributed power supply;

[0059] Figure 2 It is a group control system structure diagram for distributed power supply;

[0060] Figure 3 It is a group control system principle diagram for distributed power supply;

[0061] Figure 4 It is a group control system principle diagram for distributed power supply;

[0062] Figure 5 It is a multi-level automatic control module interface diagram;

[0063] Figure 6 It is a feeder automatic group control block interface diagram;

[0064] Figure 7 It is a maintenance safety group control interface diagram;

[0065] Figure 8Fig. 1 is a schematic diagram of a historical record management module interface;

[0066] Figure 9 Fig. 2 is a schematic diagram of a historical record control management-information statistics interface;

[0067] Figure 10 Fig. 3 is a schematic diagram of a historical record control management-control detail viewing interface. DETAILED DESCRIPTION

[0068] In order to make the objects, technical solutions and advantages of the present application clearer, further detailed description will be given below in combination with embodiments and drawings. The schematic embodiments of the present application and the description thereof are only used to explain the present application, and do not limit the present application.

[0069] The prior art has a way of hierarchical distribution architecture of power grid, which modularly divides the network and load, respectively groups and controls the power supply of the sub-modules, but under a large number of distributed power supplies, there are still phenomena of unreasonable power flow distribution, energy waste and resource conflict. In addition, under most hierarchical architectures, the same distributed power supply resource may be associated with multiple different electricity consumption levels, so in the process of generating automatic group control strategies for different electricity consumption levels, it may cause distributed power supply resource conflict or vacancy, leading to uneven process of suppressing power flow fluctuations. In view of this, the present application provides the following embodiments to solve the above technical problems:

[0070] Embodiment 1

[0071] The embodiment provides a group control method of distributed power supply, as shown in Figure 1 , which comprises the following steps:

[0072] Step one, divide the target power grid connected with the distributed power supply into multiple electricity consumption levels, and respectively configure the group control calculation model of each electricity consumption level; this step specifically comprises the following method:

[0073] Divide the target power grid connected with the distributed power supply into: distribution transformer electricity consumption level, main transformer electricity consumption level, line electricity consumption level, station electricity consumption level and regional electricity consumption level;

[0074] Statistical distributed power supply resources of each electricity consumption level;

[0075] Based on the distributed power supply resources of each electricity consumption level and the topology structure of the electricity consumption level, respectively configure the power flow calculation model and the response capacity calculation model. According to the power flow calculation result, determine whether there is a power flow over-limit risk in the current electricity consumption level, if there is a power flow over-limit risk, calculate the response capacity that needs to be increased or decreased according to the response capacity calculation model; if there is no power flow over-limit risk, there is no need to calculate the response capacity, that is, the response capacity S = 0; for the electricity consumption level with response capacity S = 0, it is not necessary to generate an automatic group control strategy.

[0076] Step two, monitoring the load parameter input of each power consumption level to the corresponding group control calculation model, and generating an automatic group control strategy combined with a group control target selection mechanism; the group control target selection mechanism determines the control target power supply according to the association relationship between the distributed power supply resources and different power consumption levels; this step specifically includes the following methods:

[0077] S21, taking the power consumption level with a response capacity S ≠ 0 as the target power consumption level;

[0078] S22, optimizing the distributed power supply resource group of each target power consumption level according to the association relationship between the distributed power supply resources and the target power consumption levels; this step specifically includes the following methods:

[0079] S221, selecting the cross power supply resource from all distributed power supply resource groups; the cross power supply resource includes the distributed power supply resource belonging to at least two distributed power supply resource groups;

[0080] S222, calculating the association degree characteristic value of the cross power supply resource and the target power consumption level; this step specifically includes the following methods:

[0081] The association degree characteristic value C of the cross power supply resource i and the target power consumption level j is calculated according to the following formula: ij :

[0082]

[0083] S eij Satisfies:

[0084]

[0085] i∈(1, m)

[0086] Wherein, n i represents the total number of target power consumption levels to which the cross power supply resource i belongs; k represents the association coefficient; M ij represents the matching degree of the available capacity of the cross power supply resource i and the demand response capacity; Q ij represents the historical adjustment frequency of the cross power supply resource i participating in the target power consumption level; S ij represents the available capacity of the cross power supply resource i, S eij represents the estimated demand response capacity of the cross power supply resource i;

[0087] S eaj represents the estimated demand response capacity of the distributed power supply resource a in the distributed power supply resource group corresponding to the target power consumption level j, when S ea is a non-cross power supply resource, S ea is equal to the available capacity of the distributed power supply resource a; when S ea is a cross power supply resource, Sea is equal to the remaining capacity of the response capacity S minus the available capacity of all non-cross power supply resources; m represents the total number of distributed power supply resources in the distributed power supply resource group corresponding to the membership target power consumption level j.

[0088] S223, obtain the membership target power consumption level A with the highest correlation degree, and only retain the current cross power supply resource in the distributed power supply resource group of the membership target power consumption level A.

[0089] S23, screen the control target power supply from the optimized distributed power supply resource group. The step specifically includes the method:

[0090] S231, configure the number N of control target power supplies;

[0091] S232, randomly screen N distributed power supply resources from the optimized distributed power supply resource group, and calculate the total adjusted times and total output capacity of the N distributed power supply resources;

[0092] S233, take the N distributed power supply resources with the maximum total output capacity N≥preset total output capacity threshold Ne and the minimum total adjusted times as the control target power supplies.

[0093] Step three, adjust the corresponding control target power supply according to the automatic group control strategy.

[0094] The application aims to provide a group control method, system and medium for distributed power supply, which is improved in method on the basis of the existing hierarchical distributed architecture group control technology, realizes the global control of the main station for the access distributed power supply and the local autonomy cooperation of the distributed energy without changing the original operation mode of the power grid, and supports the safe and stable operation of the large power grid in the multi-power consumption level partition optimization mode.

[0095] In addition, when designing the hierarchical architecture, the power grid and the load are generally modularized and divided, and under the hierarchical architecture of this division method (including the power consumption level division method of the present application), there is a problem that the same distributed power supply resource may be associated with multiple different power consumption levels, so that in the process of generating the automatic group control strategy when the different power consumption levels exceed the limit, the distributed power supply resource conflict or vacancy may be caused, leading to the unbalanced process of suppressing the tidal flow fluctuation; the present application considers this problem and specially introduces the group control target selection mechanism to determine the control target power supply according to the association relationship between the distributed power supply resource and the different power consumption levels, to avoid the problem of distributed power supply resource conflict or vacancy in the process of generating the automatic group control strategy when the different power consumption levels exceed the limit, and to support the safe and stable operation of the power grid in the multi-power consumption level optimization combined with the group control target selection mechanism.

[0096] Embodiment 2

[0097] The embodiment provides a group control system of a distributed power supply, which is used for implementing the group control method of the distributed power supply in the embodiment 1; as shown in the figure, Figure 2 and Figure 3 the system comprises:

[0098] a division module, which is used for dividing a target power grid connected to the distributed power supply into a plurality of power consumption levels, and respectively configuring a group control calculation model of each power consumption level; the power consumption levels comprise a distribution transformer power consumption level, a main transformer power consumption level, a line power consumption level, a station power consumption level and a region power consumption level;

[0099] a multi-level automatic control module, which is used for monitoring a load parameter input of each power consumption level to a corresponding group control calculation model, and generating an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines a control target power supply according to an association relationship between distributed power supply resources and different power consumption levels;

[0100] as shown in the figure, Figure 5 the system obtains a list of over-limit devices of a feeder (the line power consumption level) according to monitoring and group control calculation, obtains a load, a load rate and an over-limit amount of a current feeder device, and simultaneously generates an automatic group control strategy of an associated control target power supply, so that an adjustment instruction can be generated and issued.

[0101] The multi-level automatic control module monitors the line / distribution transformer load in real time, calculates an over-limit amount after over-limit, and automatically selects a control target power supply with an equal amount of power output from the associated control target power supplies to perform a power adjustment operation, so as to realize a line overload automatic adjustment control target power supply control function, an over-limit automatic adjustment process, and an alarm prompt, and the control target power supply list and quantity with adjustment, a control target power supply for reminding power reduction after automatic adjustment; a historical record management module is used for storing a control target power supply control list template, and the historical template can be loaded during control to realize batch recovery of the control target power supply.

[0102] a self-defined control module, which is used for screening one or more control target power supplies to generate a self-defined control strategy; the self-defined control module and the maintenance safety group control module both comprise a searching unit, a selecting unit and a parameter configuration unit;

[0103] the searching unit is used for searching out the specified one or more control target power supplies;

[0104] the selecting unit is used for selecting the specified one or more control target power supplies;

[0105] the parameter configuration unit is used for configuring a parameter operation of the specified one or more control target power supplies, and the parameter operation comprises parameter modification and parameter calling.

[0106] as shown in the figure, Figure 6As shown, the embodiment selects 4 station area photovoltaic devices through the searching unit and the selecting unit. After selection, the system calculates the current active power, adjustable range, adjustment duration and other parameters according to the pre-configured power flow calculation model and response capacity calculation model.

[0107] The custom control module realizes the manual flexible control function of the control target power supply, realizes the single control, group control and full control of the control target power supply of the distribution transformer power consumption level, the main transformer power consumption level, the line power consumption level, the field power consumption level and the regional power consumption level, and supports batch recovery of the controlled photovoltaic.

[0108] The display of the distributed power supply resource information under each level, the periodic refresh of the table record state, the support for the filtering of the distributed power supply resource type and the statistical function of the selected information, the realization of the distributed power supply resource parameter calling and the parameter modification function, and the batch parameter calling and modification of the control target power supply under the level.

[0109] The parameter recall can be performed through the parameter configuration unit, or the corresponding adjustment amount and the strategy execution time can be configured.

[0110] The maintenance safety group control module is used for screening one or more control target power supplies of a target maintenance area to generate a maintenance control strategy.

[0111] As shown in the maintenance safety group control interface Figure 7 The searching unit and the selecting unit can be used to select one or more control target power supplies to be adjusted in the maintenance area for parameter operation.

[0112] The maintenance area distributed power supply device screening and switching function can realize the display of the photovoltaic state of the set maintenance area, the device switching, has the search function according to the start and end switch names of the maintenance area, selects the two power supply switch names through the search, checks the switch, and can screen the distributed power supply in the maintenance area and perform batch switching control. All the switches in the area are associated in advance, so that all the switches can be searched, the switch device can be searched and selected by the first letter or name. The selecting unit can also realize the screening of the distributed power supply in the maintenance area, screen and view the distributed photovoltaic station area device in the maintenance area through the first and last switches, and perform one-key group control on the distributed photovoltaic station area device in the maintenance area.

[0113] The adjustment module is used for adjusting the corresponding control target power supply according to the automatic group control strategy, the custom control strategy and the maintenance control strategy; as shown in Figure 3 The adjustment module includes:

[0114] The instruction generation unit is used for generating the automatic group control strategy, the custom control strategy and the maintenance control strategy into an E file as a control instruction.

[0115] The data isolation unit is used to transmit control commands generated by the central control center to the intelligent fusion terminal of the sub-control center.

[0116] The intelligent fusion terminal is used to send control commands to the inverters of each controlled target power supply via HPLC.

[0117] The history management module is used to record the adjustment process and adjustment feedback results.

[0118] Some interfaces of history management, such as Figures 8-10 As shown, the historical record management module can uniformly manage the photovoltaics that failed to be controlled in various scenarios, displaying the list, quantity, and capacity (grid-connected capacity) of the uncontrolled photovoltaics, and allowing for failed re-control of uncontrolled photovoltaics and control recovery functions for successfully controlled photovoltaics.

[0119] The system displays relevant control information in batches, including task mode, control mode, county, control type, control issuance / end time, number of controlled households, and control results. It also provides relevant filtering functions. The system enables statistical analysis and detailed display of historical control records, as well as the functions of re-controlling uncontrolled photovoltaic systems after failures and restoring control of successfully controlled photovoltaic systems.

[0120] Example 3

[0121] This embodiment provides a computer-readable medium storing a computer program, which, when executed by a processor, can implement the distributed power supply group control method as described in Embodiment 1; specifically, it performs the following steps:

[0122] The target power grid connected to the distributed power source is divided into multiple power consumption levels, and a group control calculation model is configured for each power consumption level.

[0123] The load parameters of each power consumption level are monitored and input into the corresponding group control calculation model. An automatic group control strategy is generated by combining the group control target selection mechanism. The group control target selection mechanism determines the target power supply to be controlled based on the correlation between distributed power resources and different power consumption levels.

[0124] Adjust the corresponding target power supply according to the automatic group control strategy.

[0125] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A group control method of distributed power sources, characterized by, The method comprises the following steps: dividing a target power grid connected with a distributed power supply into multiple power consumption levels, and configuring a group control calculation model for each power consumption level respectively; specifically comprising The method comprises the following steps: dividing a target power grid connected with a distributed power supply into a distribution transformer power consumption level, a main transformer power consumption level, a line power consumption level, a station power consumption level, and a regional power consumption level; counting distributed power supply resources of each power consumption level; configuring a power flow calculation model and a response capacity calculation model based on the distributed power supply resources of each power consumption level and the topological structure of the power consumption level; monitoring load parameter input of each power consumption level into the corresponding group control calculation model, and generating an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines a control target power supply according to the association relationship between the distributed power supply resources and different power consumption levels; specifically comprising the following steps: taking a power consumption level with a response capacity S≠0 as a target power consumption level; optimizing distributed power supply resource groups of each target power consumption level according to the association relationship between the distributed power supply resources and the target power consumption levels; the method comprises the following steps: filtering out a cross power supply resource from all the distributed power supply resource groups; the cross power supply resource comprises a distributed power supply resource belonging to at least two distributed power supply resource groups; calculating a correlation degree characteristic value between the cross power supply resource and each target power consumption level; obtaining a target power consumption level A with the highest correlation degree characteristic value, and retaining the current cross power supply resource only in the distributed power supply resource group of the target power consumption level A; The correlation degree characteristic value C of the cross power supply resource i and the target power consumption level j to which it belongs is calculated according to the following formula ij : ； ； S eij Satisfied: ； the method comprises the following steps: wherein, n i represents the total number of target power consumption levels to which the cross-power resource i belongs; k represents the correlation coefficient; M ij represents the matching degree of the available output capacity and the demand response capacity of the cross-power resource i; Q ij represents the historical adjustment times of the cross-power resource i participating in the target power consumption level; S ij represents the available output capacity of the cross-power resource i, S eij represents the estimated demand response capacity of the cross-power resource i; Sj,a represents the estimated demand response capacity of the distributed power resource a in the distributed power resource group corresponding to the target power consumption level j, when S ea Sj,a equals the available capacity of the distributed power resource a; when S ea Sj,a equals the available capacity of the distributed power resource a; when S ea Sj,a equals the available capacity of the distributed power resource a; when S ea Sj,a equals the remaining capacity after deducting the available capacity of all non-cross power resources from the response capacity S. i∈(1, m); m represents the total number of distributed power supply resources in the distributed power supply resource group corresponding to the target power consumption level j; filtering out a control target power supply from the optimized distributed power supply resource group; 2. The method of claim 1, wherein, adjusting the corresponding control target power supply according to the automatic group control strategy. the method comprises the following steps: configuring the number N of control target power supplies; randomly filtering out N distributed power supply resources from the optimized distributed power supply resource group, calculating the total number of times of adjustment and the total output capacity of the N distributed power supply resources; 3. A group control system of distributed power sources, characterized by, taking the N distributed power supply resources with the maximum total output capacity N≥a preset total output capacity threshold Ne and the minimum total number of times of adjustment as the control target power supplies. The system comprises: a division module for dividing a target power grid connected with a distributed power supply into multiple power consumption levels, and configuring a group control calculation model for each power consumption level respectively; the power consumption levels comprise a distribution transformer power consumption level, a main transformer power consumption level, a line power consumption level, a station power consumption level, and a regional power consumption level; a multi-level automatic control module for monitoring load parameter input of each power consumption level into the corresponding group control calculation model, and generating an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines a control target power supply according to the association relationship between the distributed power supply resources and different power consumption levels; a self-defined control module for filtering out one or more control target power supplies to generate a self-defined control strategy. The maintenance safety group control module is configured to screen one or more control target power sources in a target maintenance area to generate a maintenance control strategy; The adjustment module is configured to adjust the corresponding control target power source according to the automatic group control strategy, the custom control strategy and the maintenance control strategy; The history record management module is configured to record the adjustment process and the adjustment feedback result.

4. The distributed power supply group control system according to claim 3, wherein The custom control module and the maintenance safety group control module each include a searching unit, a selecting unit and a parameter configuration unit; The searching unit is configured to search one or more specified control target power sources; The selecting unit is configured to select the one or more specified control target power sources; The parameter configuration unit is configured to configure parameter operations of the one or more specified control target power sources, the parameter operations including parameter modification and parameter calling.

5. The distributed power supply group control system according to claim 4, wherein The adjustment module includes: An instruction generation unit configured to generate E files of the automatic group control strategy, the custom control strategy and the maintenance control strategy as control instructions; A data isolation unit configured to transmit the control instructions generated by the general control center to the intelligent fusion terminal of the sub-control center; The intelligent fusion terminal is configured to send the control instructions to the inverters of the control target power sources through HPLC.

6. A computer readable medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the group control method of the distributed power source according to claim 1 or 2.

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