Group control method and system of distributed power supply, and medium

Abstract

The invention discloses a group control method and system for distributed power supplies and a medium. Relates to the technical field of power group scheduling. According to the group control method and system for the distributed power supply and the medium, the method is improved on the basis of an existing hierarchical distribution architecture group dispatching and group control technology, global control over the accessed distributed power supply and local autonomous cooperation of distributed energy resources by a master station are achieved under the condition that the original operation mode of a power grid is not changed, and the distributed power supply group control efficiency is improved. Power flow fluctuation and overvoltage are stabilized in a multi-power-utilization-level partition optimization mode, and safe and stable operation of a large power grid is supported; meanwhile, when the automatic group control strategy is generated, the target power supply is determined and controlled according to the incidence relation between the distributed power supply resources and the different power utilization levels, and the problem of resource allocation conflicts when the different power utilization levels are out of limit at the same time is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of power group regulation, and in particular to a distributed power group control method, system and medium. Background Art

[0002] After the distributed power source is connected to the distribution network, it needs to have adjustable and controllable functions. Among them, the distributed power source connected to the low voltage can achieve substation autonomy through the intelligent fusion terminal, and the distributed power source connected to the medium voltage has the function of receiving and executing relevant control requirements.

[0003] In order to solve the problems of over-limit flow and active power regulation caused by a large number of distributed power sources, the master station needs to run through the province, the region and the use, and through the distributed power source group adjustment and control technology, with the goal of local consumption of distributed power sources and reasonable distribution of flow, to achieve a visible and controllable regulation and control strategy for distributed power sources.

[0004] The existing technology has the method of modularizing the network and load through the layered distribution architecture of the power grid, and group-adjusting and group-controlling the sub-module power supplies respectively. However, in a large number of distributed power supply scenarios, there are still problems such as unreasonable power flow distribution, energy waste and resource conflicts. Summary of the invention

[0005] The technical problem to be solved by the present invention is: the prior art has modularized the network and the load through the hierarchical distribution architecture of the power grid, and group-controlled the sub-module power supplies respectively, but there are still unreasonable power flow distribution, energy waste and resource conflicts under a large number of distributed power supplies; the purpose of the present invention is to provide a distributed power supply group control method, system and medium, and to improve the method on the basis of the existing hierarchical distribution architecture group control technology, so as to realize the global control of the connected distributed power supply by the master station and the local autonomous coordination of the distributed energy without changing the original operation mode of the power grid, and to smooth the power flow fluctuation and overvoltage in a multi-power consumption level zoning optimization manner, so as to support the safe and stable operation of the large power grid; at the same time, when generating the automatic group control strategy, the control target power supply is determined according to the correlation between the distributed power supply resources and the different power consumption levels, so as to avoid the problem of resource allocation conflicts when different power consumption levels exceed the limit at the same time.

[0006] The present invention is achieved through the following technical solutions:

[0007] This solution provides a group control method for distributed power sources, including:

[0008] Divide the target power grid connected to the distributed power generation into multiple power consumption levels, and configure the group control calculation model for each power consumption level respectively;

[0009] Monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between the distributed power source resources and different power consumption levels;

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

[0011] Working principle of this scheme: The existing technology has modularized the network and load through the hierarchical distribution architecture of the power grid, and group-controlled the sub-module power supplies respectively, but there are still unreasonable power flow distribution and energy waste under a large number of distributed power supplies; the purpose of the present invention is to provide a distributed power supply group control method, system and medium, and to improve the method on the basis of the existing hierarchical distribution architecture group control technology, so as to realize the global control of the master station for the accessed distributed power supplies and the local autonomous coordination of the distributed energy without changing the original operation mode of the power grid, and to smooth the power flow fluctuations and overvoltage in a multi-power level zoning optimization manner, so as to support the safe and stable operation of the large power grid.

[0012] In addition, when designing a hierarchical architecture, it is generally modularized according to the power grid and the load. Under the hierarchical architecture of this division method (including the power consumption level division method of this scheme), there is such a problem: the same distributed power resource may be associated with multiple different power consumption levels. In this way, after different power consumption levels exceed the limit, the distributed power resource may conflict or be redundant in the process of generating the automatic group control strategy, resulting in an unbalanced process of smoothing the power flow fluctuation. Taking this problem into consideration, this scheme specially introduces a group control target selection mechanism to determine the control target power source according to the association between the distributed power resources and different power consumption levels, so as to avoid different power consumption levels exceeding the limit at the same time, and the distributed power resource conflict or surplus in the process of generating the automatic group control strategy. The power flow fluctuation and overvoltage are smoothed by optimizing multiple power consumption levels separately and combining the group control target selection mechanism to support the safe and stable operation of the power grid.

[0013] At the same time, when generating the automatic group control strategy, the control target power source is determined according to the relationship between the distributed power resources and different power consumption levels, avoiding the problem of resource allocation conflicts caused by different power consumption levels exceeding the limit at the same time.

[0014] A further optimization scheme is to divide the target power grid connected to the distributed power source into multiple power consumption levels, and configure the group control calculation model of each power consumption level respectively; including the method:

[0015] Divide the target power grid connected to the distributed power generation into: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level;

[0016] Statistics on distributed power resources at each electricity consumption level;

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

[0018] A further optimization scheme is that the load parameters of each power consumption level are monitored and input into the corresponding group control calculation model, and an automatic group control strategy is generated in combination with the group control target selection mechanism; including the method:

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

[0020] Optimize the distributed power resource group of each target power consumption level according to the correlation between the distributed power resources and each target power consumption level;

[0021] Filter the control target power source from the optimized distributed power resource group.

[0022] A further optimization scheme is to optimize the distributed power resource group of each target power consumption level according to the association relationship between the distributed power resource and each target power consumption level; including the method:

[0023] Screening out cross power resources from all distributed power resource groups; the cross power resources include distributed power resources belonging to at least two distributed power resource groups;

[0024] Calculate the correlation characteristic value between the cross power supply resource and the subordinate target power consumption level;

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

[0026] A further optimization scheme is that the calculation of the correlation characteristic value between the cross power supply resource and the subordinate target power consumption level includes the following method:

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

[0028]

[0029] S eij satisfy:

[0030]

[0031] i∈(1,m)

[0032] Among them, n i represents the total number of target power consumption levels to which cross power resource i belongs; k represents the correlation coefficient; Mij represents the matching degree between the output capacity of cross power resource i and the demand response capacity; Q ij represents the historical number of times the cross power resource i participates in the adjustment of the target power consumption level; S ij represents the output capacity of cross power resource i, S eij represents the estimated demand response capacity of cross-source resource i;

[0033] S eaj 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 the power supply is non-interleaved, S ea Equal to the output capacity of distributed power resource a; when S ea When the cross power supply source is used, S ea It is equal to the remaining capacity after deducting the output capacity of all non-cross 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 that the control target power source is screened out from the optimized distributed power resource group, including the method:

[0035] Configure the number of control target power supplies N;

[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 ≥ the preset total output capacity threshold Ne) and the smallest total number of times adjusted are used as the control target power sources.

[0038] The present solution also provides a distributed power source group control system, which is used to implement the above-mentioned distributed power source group control method; the system comprises:

[0039] A division 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 of each power consumption level respectively; the power consumption level includes: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level;

[0040] A multi-level automatic control module is used to monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between distributed power resources and different power consumption levels;

[0041] A custom control module, used for selecting one or more control target power sources to generate a custom control strategy;

[0042] The maintenance safety group control module is used to select one or more control target power sources in the target maintenance area to generate a maintenance control strategy;

[0043] An adjustment module, 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;

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

[0045] A further optimization scheme is that the custom control module and the maintenance safety group control module both include a search unit, a selection unit and a parameter configuration unit;

[0046] The search unit is used to search for one or more specified control target power supplies;

[0047] The selection unit is used to select one or more specified control target power supplies;

[0048] The parameter configuration unit is used to configure one or more specified parameter operations for controlling the target power supply, and the parameter operations include parameter modification and parameter calling.

[0049] A further optimization scheme is that the adjustment module includes:

[0050] An instruction generation unit is used to generate E files from automatic group control strategies, custom control strategies and maintenance control strategies as control instructions;

[0051] A data isolation unit is used to transmit the control instructions generated by the main control center to the intelligent fusion terminal of the sub-control center;

[0052] The intelligent fusion terminal is used to send control instructions to the inverters of each control target power source through HPLC.

[0053] The present solution also provides a computer-readable medium on which a computer program is stored. The computer program is executed by a processor to implement the group control method of the distributed power source as described above.

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

[0055] 1. The present invention provides a distributed power source group control method, system and medium; based on the existing hierarchical distributed architecture group adjustment and group control technology, the method is improved to achieve global control of the master station for the connected distributed power sources and local autonomous coordination of distributed energy without changing the original operation mode of the power grid, and to smooth out power flow fluctuations and overvoltages in a multi-power consumption level zoning optimization manner to support the safe and stable operation of large power grids; at the same time, when generating an automatic group control strategy, the control target power source is determined according to the association between the distributed power source resources and the different power consumption levels, avoiding the problem of resource allocation conflicts when different power consumption levels exceed the limit at the same time.

[0056] 2. The present invention provides a group control method, system and medium for distributed power sources; a group control target selection mechanism is introduced to determine the control target power source according to the correlation between distributed power source resources and different power consumption levels, so as to avoid different power consumption levels exceeding the limit at the same time, and to avoid conflicts or surpluses in distributed power source resources in the process of generating automatic group control strategies. The group control target selection mechanism is combined with the optimization of multiple power consumption levels to smooth out power flow fluctuations and overvoltages, and support the safe and stable operation of the power grid. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0058] Figure 1 It is a flow chart of a group control method for distributed power sources;

[0059] Figure 2 This is a schematic diagram of the structure of a group control system for distributed power sources;

[0060] Figure 3 This is a schematic diagram of the principle of the group control system of distributed power sources;

[0061] Figure 4 This is a schematic diagram of the principle of the group control system of distributed power sources;

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

[0063] Figure 6 This is a schematic diagram of the interface of the feeder automatic group modulation control block;

[0064] Figure 7 This is a schematic diagram of the maintenance safety group control interface;

[0065] Figure 8This is a schematic diagram of the interface of the history record management module;

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

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

[0068] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0069] The prior art has a method of modularizing the network and load through a hierarchical distribution architecture of the power grid, and performing group adjustment and group control on the sub-module power supplies respectively. However, there are still problems of unreasonable power flow distribution, energy waste and resource conflicts under a large number of distributed power supplies; in addition, there are problems in most hierarchical architectures: the same distributed power supply resource may be associated with multiple different power consumption levels, so in the process of generating automatic group control strategies when different power consumption levels exceed the limit, it may cause conflicts or surpluses in distributed power supply resources, resulting in an unbalanced process of smoothing power flow fluctuations; in view of this, this solution provides the following embodiments to solve the above technical problems:

[0070] Example 1

[0071] This embodiment provides a distributed power supply group control method, such as Figure 1 As shown, including:

[0072] Step 1: Divide the target power grid connected to the distributed power source into multiple power consumption levels, and configure the group control calculation model of each power consumption level respectively; this step specifically includes the following method:

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

[0074] Statistics on distributed power resources at each electricity consumption level;

[0075] Based on the distributed power resources of each power consumption level and the topological structure of the power consumption level, the power flow calculation model and the response capacity calculation model are configured respectively. According to the power flow calculation results, it is determined whether the current power consumption level has the risk of power flow exceeding the limit. If there is a risk of power flow exceeding the limit, the response capacity that needs to be increased or decreased is calculated according to the response capacity calculation model; if there is no risk of power flow exceeding the limit, there is no need to calculate the response capacity, that is, the response capacity S = 0; for the power consumption level with response capacity S = 0, there is no need to generate an automatic group control strategy.

[0076] Step 2: monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with the group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between the distributed power resources and different power consumption levels; this step specifically includes the following method:

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

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

[0079] S221, screening out cross power resources from all distributed power resource groups; the cross power resources include distributed power resources belonging to at least two distributed power resource groups;

[0080] S222, calculating the correlation characteristic value between the cross power supply resource and the subordinate target power consumption level; this step specifically includes the following method:

[0081] The correlation characteristic value C between the cross power resource i and the subordinate target power consumption level j is calculated according to the following formula: ij :

[0082]

[0083] S eij satisfy:

[0084]

[0085] i∈(1,m)

[0086] Among them, n i represents the total number of target power consumption levels to which cross power resource i belongs; k represents the correlation coefficient; M ij represents the matching degree between the output capacity of cross power resource i and the demand response capacity; Q ij represents the historical number of times the cross power resource i participates in the adjustment of the target power consumption level; S ij represents the output capacity of cross power resource i, S eij represents the estimated demand response capacity of cross-source resource i;

[0087] S eaj 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 the power supply is non-interleaved, S ea Equal to the output capacity of distributed power resource a; when S ea When the cross power supply source is used, Sea It is equal to the remaining capacity after deducting the output capacity of all non-cross 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.

[0088] S223, obtaining the target power consumption level A with the highest correlation, and only retaining the current cross power resources in the distributed power resource group belonging to the target power consumption level A.

[0089] S23, selecting the control target power source from the optimized distributed power resource group. This step specifically includes the following method:

[0090] S231, configuring the number N of target power sources to be controlled;

[0091] S232, randomly selecting N distributed power resources from the optimized distributed power resource group, and calculating the total number of times the N distributed power resources have been adjusted and the total output capacity;

[0092] S233, taking the N distributed power resources with the largest total output capacity (N≥preset total output capacity threshold Ne) and the smallest total number of times adjusted as the control target power sources.

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

[0094] The purpose of the present invention is to provide a group control method, system and medium for distributed power sources. Based on the existing hierarchical distributed architecture group adjustment and group control technology, method improvements are made to achieve global control of the connected distributed power sources by the master station and local autonomous coordination of distributed energy without changing the original operation mode of the power grid. In a multi-power level zoning optimization manner, power flow fluctuations and overvoltages are smoothed to support the safe and stable operation of large power grids.

[0095] In addition, when designing a hierarchical architecture, it is generally modularized according to the power grid and the load. Under the hierarchical architecture of this division method (including the power consumption level division method of this scheme), there is such a problem: the same distributed power resource may be associated with multiple different power consumption levels. In this way, in the process of generating automatic group control strategies when different power consumption levels exceed the limit, it may cause conflicts or surpluses in distributed power resources, resulting in an unbalanced process of smoothing power flow fluctuations. Taking this problem into consideration, this scheme specially introduces a group control target selection mechanism to determine the control target power source according to the association between distributed power resources and different power consumption levels, so as to avoid different power consumption levels exceeding the limit at the same time. In the process of generating automatic group control strategies, conflicts or surpluses in distributed power resources are avoided, and power flow fluctuations and overvoltages are smoothed by optimizing multiple power consumption levels separately and combining the group control target selection mechanism to support the safe and stable operation of the power grid.

[0096] Example 2

[0097] This embodiment provides a distributed power group control system, which is used to implement the distributed power group control method of embodiment 1; Figure 2 and Figure 3 As shown, the system comprises:

[0098] A division 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 of each power consumption level respectively; the power consumption level includes: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level;

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

[0100] like Figure 5 As shown, the system obtains a list of over-limit devices on the feeder (line power consumption level) based on monitoring and group control calculations, and obtains the load, load rate and over-limit amount of the current feeder equipment. At the same time, it generates an automatic group control strategy for the associated control target power supply, and can generate adjustment instructions for issuance.

[0101] The multi-level automatic control module monitors the line / distribution transformer load in real time, calculates the limit amount when it exceeds the limit, and automatically selects the control target power supply with equal output from the associated control target power supplies to perform power adjustment operations, thereby realizing the line overload automatic adjustment control target power supply control function. During the over-limit automatic adjustment process, an alarm prompt is set, including the list and quantity of the control target power supplies to be adjusted, and a reminder to reduce the power of the control target power supply after automatic adjustment is given; the control list template of the control target power supply is stored by the historical record management module, and the historical template can be loaded when the control is closed to realize batch restoration of power supply of the control target power supplies.

[0102] A custom control module is used to filter out one or more control target power sources to generate a custom control strategy; the custom control module and the maintenance safety group control module both include a search unit, a selection unit and a parameter configuration unit;

[0103] The search unit is used to search for one or more specified control target power supplies;

[0104] The selection unit is used to select one or more specified control target power supplies;

[0105] The parameter configuration unit is used to configure one or more specified parameter operations for controlling the target power supply, and the parameter operations include parameter modification and parameter calling.

[0106] like Figure 6As shown, in this embodiment, four photovoltaic devices in different areas are selected through the search unit and the selection unit. After the 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 and flexible control function of the target power source, and realizes single control, group control and full control of the target power sources at the distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level, and supports batch recovery of controlled photovoltaic power plants.

[0108] Display the distributed power resource information at each level, refresh the table record status periodically, support the screening of distributed power resource types and the statistics of selected information; realize the distributed power resource parameter calling and parameter modification functions, and can call and modify the parameters of the control target power at the level in batches.

[0109] The parameter configuration unit can be used to recall parameters, or configure the corresponding adjustment amount and strategy execution time.

[0110] The maintenance safety group control module is used to select one or more control target power sources in the target maintenance area to generate a maintenance control strategy;

[0111] Maintenance safety group control interface Figure 7 As shown, one or more control target power supplies to be adjusted can be selected in the maintenance area through the search unit and the selection unit to perform parameter operations.

[0112] For example, the function of screening and switching of distributed power supply equipment in the maintenance area can realize the display of photovoltaic status and equipment switching in the area for the set maintenance. It has the function of searching according to the names of the start and end switches in the maintenance area. By searching and selecting the names of two power switches and checking the switches, the distributed power supplies in the maintenance area can be screened out and batch switching control can be performed. All switches in the area can be associated in advance to realize the search of all switches. Switch equipment can be searched and selected by first letter or name. The selection unit can also realize the screening of distributed power supplies in the maintenance area, screen and view the distributed photovoltaic equipment in the maintenance area through the first and last switches, and perform one-key group control of the distributed photovoltaic equipment in the maintenance area.

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

[0114] An instruction generation unit is used to generate E files from automatic group control strategies, custom control strategies and maintenance control strategies as control instructions;

[0115] A data isolation unit is used to transmit the control instructions generated by the main control center to the intelligent fusion terminal of the sub-control center;

[0116] The intelligent fusion terminal is used to send control instructions to the inverters of each control target power source through HPLC.

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

[0118] Some interfaces of history record management are as follows Figure 8-Figure 10 As shown, the history record management module can uniformly manage the photovoltaics that failed to be controlled in each scenario, display the list, quantity, and capacity (grid-connected capacity) of photovoltaics that were not successfully controlled, and allow the control recovery function of failed uncontrolled photovoltaics and successfully controlled photovoltaics.

[0119] Relevant control information is displayed in batches, including task mode, control mode, county, control type, control issuance / end time, number of controlled households, control results and other information, and relevant filtering functions are provided; information statistics and detailed display of historical control records are realized, as well as failed re-control of uncontrolled photovoltaics and control recovery functions of successfully controlled photovoltaics.

[0120] Example 3

[0121] This embodiment provides a computer-readable medium on which a computer program is stored. The computer program is executed by a processor to implement the distributed power source group control method as described in Embodiment 1. Specifically, the following steps are performed:

[0122] Divide the target power grid connected to the distributed power generation into multiple power consumption levels, and configure the group control calculation model for each power consumption level respectively;

[0123] Monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between the distributed power source resources and different power consumption levels;

[0124] The corresponding control target power supply is adjusted according to the automatic group control strategy.

[0125] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method 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 in the scope of protection of the present invention.

Claims

1. A distributed power source group control method, characterized in that: include: Divide the target power grid connected to the distributed power generation into multiple power consumption levels, and configure the group control calculation model for each power consumption level respectively; Monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between the distributed power source resources and different power consumption levels; The corresponding control target power supply is adjusted according to the automatic group control strategy.

2. A distributed power source group control method according to claim 1, characterized in that: The target power grid connected to the distributed power source is divided into multiple power consumption levels, and a group control calculation model for each power consumption level is configured respectively; including method: Divide the target power grid connected to the distributed power generation into: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level; Statistics on distributed power resources at each electricity consumption level; Based on the distributed power resources of each power consumption level and the topological structure of the power consumption level, the power flow calculation model and the response capacity calculation model are configured respectively.

3. A distributed power source group control method according to claim 2, characterized in that: The load parameters of each power consumption level are monitored and input into the corresponding group control calculation model, and an automatic group control strategy is generated in combination with the group control target selection mechanism; Included methods: The electricity consumption level with response capacity S≠0 is taken as the target electricity consumption level; Optimize the distributed power resource group of each target power consumption level according to the correlation between the distributed power resources and each target power consumption level; Filter the control target power source from the optimized distributed power resource group.

4. A distributed power source group control method according to claim 3, characterized in that: The distributed power resource group of each target power consumption level is optimized according to the association relationship between the distributed power resource and each target power consumption level; Included methods: Filter out cross power resources from all distributed power resource groups; The cross power resources include distributed power resources belonging to at least two distributed power resource groups; Calculate the correlation characteristic value between the cross power supply resources and each subordinate target power consumption level; The target power consumption level A with the highest correlation characteristic value is obtained, and the current cross power resources are only retained in the distributed power resource group of the target power consumption level A.

5. A distributed power source group control method according to claim 3, characterized in that: The calculation of the correlation between the cross power supply resources and the subordinate target power consumption level; Included methods: The correlation characteristic value C between the cross power resource i and the subordinate target power consumption level j is calculated according to the following formula: ij : S eij satisfy: i∈(1,m) Among them, n i represents the total number of target power consumption levels to which cross power resource i belongs; k represents the correlation coefficient; M ij represents the matching degree between the output capacity of cross power resource i and the demand response capacity; Q ij represents the historical number of times the cross power resource i participates in the adjustment of the target power consumption level; S ij represents the output capacity of cross-connect power resource i, S eij represents the estimated demand response capacity of cross-source resource i; S eaj 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 the power supply is non-interleaved, S ea Equal to the output capacity of distributed power resource a; when S ea When the cross power supply source is used, S ea It is equal to the remaining capacity after deducting the output capacity of all non-cross 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.

6. A distributed power source group control method according to claim 3, characterized in that: The method of selecting a control target power source from the optimized distributed power resource group includes: Configure the number of control target power supplies N; 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; The N distributed power resources with the largest total output capacity (N ≥ the preset total output capacity threshold Ne) and the smallest total number of times adjusted are used as the control target power sources.

7. A distributed power source group control system, characterized in that: A group control method for a distributed power source according to any one of claims 1 to 6; the system comprises: A division 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 of each power consumption level respectively; the power consumption level includes: distribution transformer power consumption level, main transformer power consumption level, line power consumption level, station power consumption level and regional power consumption level; A multi-level automatic control module is used to monitor the group control calculation model corresponding to the load parameter input of each power consumption level, and generate an automatic group control strategy in combination with a group control target selection mechanism; the group control target selection mechanism determines the control target power source according to the association between distributed power resources and different power consumption levels; A custom control module, used for selecting one or more control target power sources to generate a custom control strategy; The maintenance safety group control module is used to select one or more control target power sources in the target maintenance area to generate a maintenance control strategy; An adjustment module, 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; The history record management module is used to record the adjustment process and adjustment feedback results.

8. A distributed power source group control system according to claim 7, characterized in that: The custom control module and the maintenance safety group control module both include a search unit, a selection unit and a parameter configuration unit; The search unit is used to search for one or more specified control target power supplies; The selection unit is used to select one or more specified control target power supplies; The parameter configuration unit is used to configure one or more specified parameter operations for controlling the target power supply, and the parameter operations include parameter modification and parameter calling.

9. A distributed power source group control system according to claim 8, characterized in that: The adjustment module comprises: An instruction generation unit is used to generate E files from automatic group control strategies, custom control strategies and maintenance control strategies as control instructions; A data isolation unit is used to transmit the control instructions generated by the main control center to the intelligent fusion terminal of the sub-control center; The intelligent fusion terminal is used to send control instructions to the inverters of each control target power source through HPLC.

10. A computer readable medium having a computer program stored thereon, characterized in that: The computer program is executed by a processor to implement the group control method of distributed power sources as described in any one of claims 1 to 6.

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