Method, system and equipment for allocating contribution degree to comprehensive operation of virtual power plant based on aggregation resources

Abstract

The invention discloses a method, a system and equipment for allocating contribution degrees to comprehensive operation of a virtual power plant based on aggregation resources. The method comprises the following steps: establishing evaluation indexes of different aggregation resources in the virtual power plant; performance testing is carried out on different aggregation resources according to the evaluation indexes, and the evaluation indexes are calculated in combination with scheduling control; determining each index weight of different aggregation resources by adopting a fuzzy comprehensive evaluation method; obtaining a clearing result of the virtual power plant participating in the power market; based on a dynamic alliance benefit distribution model, distribution of contribution degrees of different aggregation resources to virtual power plant comprehensive operation is carried out; the method is applied to calculation of the contribution degrees of different aggregation resources to the virtual power plant, and the problem that the contribution degrees of different aggregation resources to the comprehensive operation of the virtual power plant cannot be quantified is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of virtual power plants, and in particular to a method, system and device for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant. Background Art

[0002] Virtual power plants aggregate distributed energy, controllable loads, energy storage and other resources through cloud-edge collaboration, IoT technology, artificial intelligence and other technologies, realize autonomous coordination and optimization control, and participate in power system operation and power market transactions. Its essence is a coordination management system under a light-asset model. It can serve as a "power plant" to supply power to the power grid for peak load regulation, participate in various power market transactions such as medium- and long-term, spot, and ancillary services, and can also serve as a special "load" to absorb electricity and flexibly play the role of peak load shaving and valley filling.

[0003] Virtual power plants serve the operation of power grids through aggregation technology and obtain corresponding benefits from power grids and users. With the establishment and improvement of the power market mechanism, a large amount of distributed resources have entered the operation and management of virtual power plants. At the same time, under the incentive of the power market, virtual power plants can flexibly participate in the power market, including frequency regulation, frequency modulation, electric energy and other power market transactions. The distributed resources aggregated by virtual power plants have the characteristics of multiple resource types, different resource subjects, and high response uncertainty. Their actual operation will affect the reasonable dispatch of virtual power plants, and will also affect the control stability and economy of virtual power plants. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a method for allocating the contribution of aggregated resources to the comprehensive operation of virtual power plants, which can effectively solve the problem that the contribution of different aggregated resources to the comprehensive operation of virtual power plants cannot be quantified and the operating income cannot be reasonably allocated, thereby improving the stability and economy of the aggregated resources of virtual power plants; another purpose of the present invention is to provide a system and equipment for allocating the contribution of aggregated resources to the comprehensive operation of virtual power plants.

[0005] Technical solution: The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to the present invention comprises the following steps:

[0006] Step 1: Construct an aggregate resource evaluation index system based on the aggregate resources and virtual power plant operating performance and operating income;

[0007] Step 2: Conduct aggregation performance test based on the virtual power plant platform and calculate aggregation resource evaluation indicators;

[0008] Step 3: Use fuzzy comprehensive evaluation method to determine the weight of each aggregate resource evaluation indicator;

[0009] Step 4: Obtain the clearing results of the virtual power plant participating in the electricity market, and allocate the contribution of each aggregated resource to the comprehensive operation of the virtual power plant based on the dynamic alliance benefit allocation model according to the weight of each aggregated resource evaluation indicator.

[0010] Furthermore, the aggregated resources include at least two of distributed photovoltaics, distributed wind power, distributed energy storage, and adjustable loads.

[0011] Furthermore, the aggregate resource evaluation index system includes a peak regulation performance index, a frequency regulation performance index, a regulation qualification rate index and a regulation economy index.

[0012] Furthermore, the peak-shaving performance indicators include peak-shaving regulation contribution indicators and peak-shaving regulation capacity indicators; frequency regulation performance indicators include frequency regulation mileage and frequency regulation performance; regulation qualification rate indicators include regulation accuracy and regulation qualification rate; and regulation economic indicators include regulation cost.

[0013] Furthermore, the fuzzy comprehensive evaluation method is used to determine the weight of each aggregation resource evaluation index, as follows:

[0014] (3.1) Based on the evaluation indicators of virtual power plant operation performance and operating income, the evaluation factor set S of aggregated resources is constructed i , as follows:

[0015] S i ={S i1 ,S i2 ,…S ir}r=1,2,…;i=1,2,…n

[0016] Where r is the evaluation index of aggregated resource construction, and n is the number of different aggregated resources connected to the virtual power plant;

[0017] (3.2) Construct the weight set W of each evaluation index of aggregated resources i , as follows:

[0018] W i = {W i1 ,W i2 ,…W ir}r=1,2,…;i=1,2,…n

[0019] Where W i is the weight set of each evaluation indicator of aggregate resource i;

[0020] (3.3) Construct the evaluation level V:

[0021] V={V 1 ,V 2 ,…,V m}m=1,2,…

[0022] Where V m is the evaluation grade value of the mth level, and m is the total number of evaluation grades;

[0023] (3.4) Construct the membership fuzzy relationship matrix R:

[0024]

[0025] In the formula, r ij S is the evaluation factor concentration index i With rating V in V m The affiliation between them;

[0026] (3.5) Construct the fuzzy comprehensive evaluation matrix H, calculate the contribution value B, and determine the contribution value b of the i-th aggregated resource i :

[0027] H=W·R

[0028] B=H·V T .

[0029] Furthermore, based on the dynamic alliance benefit allocation model, the contribution of different aggregated resources to the comprehensive operation of the virtual power plant is allocated as follows:

[0030] (4.1) Based on the real-time active power measurements of different aggregated resources collected by the virtual power plant at time t and the results of the power market, the total allocation amount of the virtual power plant adjustment ΔV is obtained. t :

[0031]

[0032] Where ΔV t is the adjustment amount of the virtual power plant at time t, E rt is the winning bid amount of the electricity market clearing result at time t, P ti The real-time active power measurement of aggregate resource i at time t;

[0033] (4.2) Based on the adjustable capacity of different aggregated resources and the requirements for aggregated resources to participate in the electric energy market, ancillary service market or demand response market, select aggregated resources that participate in the corresponding electric energy market, ancillary service market or demand response market for regulation;

[0034] Assume that the number of aggregated resources after screening is M, and the adjustment amount Δx of the i-th aggregated resource at time t is ti , its maximum adjustment The constraints are satisfied:

[0035] 0≤Δx ti ≤ΔV t

[0036]

[0037] (4.3) Contribution value b based on different aggregated resources i , establish the utility function and obtain the adjusted allocation values ​​of different aggregated resources:

[0038]

[0039] Where, X ti is the adjustment amount of the entity to which the i-th aggregate resource belongs at time t.

[0040] The allocation system based on the contribution of aggregated resources to the comprehensive operation of virtual power plants of the present invention comprises:

[0041] An aggregate resource evaluation index system construction module is used to construct an aggregate resource evaluation index system based on aggregate resources and virtual power plant operating performance and operating benefits;

[0042] Aggregate resource performance test module, used to perform performance tests on different aggregate resources connected to the virtual power plant and collect real-time measurement data of aggregate resources;

[0043] The aggregate resource evaluation index calculation module is used to calculate the evaluation index of the aggregate resource by combining the real-time data of the adjustment performance of the aggregate resource and the survey equipment parameters of the resource, and to perform weight calculation on the evaluation index of each resource to generate the evaluation grade of each resource;

[0044] The power market clearing result acquisition module is used to obtain the quantity and price clearing results of the virtual power plant participating in the electric energy market, ancillary service market and demand response market from the power market trading platform;

[0045] The module for allocating the comprehensive operational contribution of aggregated resources establishes a dynamic alliance profit distribution model, which is used to allocate the comprehensive operational contribution of each aggregated resource to the virtual power plant based on the weight of each aggregated resource evaluation indicator and the dynamic alliance profit distribution model to obtain the allocation factor of each resource entity.

[0046] Further, the aggregated resources include at least two of distributed photovoltaic, distributed wind power, distributed energy storage, and adjustable load;

[0047] The aggregate resource evaluation index system includes peak regulation performance index, frequency regulation performance index, regulation qualification rate index and regulation economy index;

[0048] The peak-shaving performance indicators include peak-shaving regulation contribution indicators and peak-shaving regulation capacity indicators; frequency regulation performance indicators include frequency regulation mileage and frequency regulation performance; regulation qualification rate indicators include regulation accuracy and regulation qualification rate; regulation economic indicators include regulation cost.

[0049] The computer storage medium of the present invention stores a computer program thereon, and when the computer program is executed by a processor, the method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant as described above is implemented. The computer device of the present invention comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, and is characterized in that when the processor executes the computer program, the method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant as described above is implemented.

[0050] Beneficial effects: Compared with the prior art, the present invention has the following advantages: the present invention can effectively make up for the quantification and allocation of resource contributions of different aggregated resources in the comprehensive operation of virtual power plants, and can effectively and reasonably distribute the benefits generated by the joint action of different aggregated resources to various resource entities, so as to achieve win-win and development of partners. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 is a flow chart of the method of the present invention;

[0052] Figure 2 This is a schematic diagram of the distribution of the comprehensive operation contribution of the virtual power plant;

[0053] Figure 3 is a schematic diagram of the system. DETAILED DESCRIPTION

[0054] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0055] like Figure 1 and Figure 2 As shown, the method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to the present invention comprises the following steps:

[0056] (1) For different aggregated resources in the virtual power plant, evaluation indicators for the operating performance and operating income of aggregated resources and virtual power plants are established, and the evaluation indicators include:

[0057] Peak shaving performance indicators: including peak shaving regulation contribution index U 1 , peak regulation capacity index U 2 ;

[0058] Frequency modulation performance indicators: including frequency modulation mileage U 3 , frequency modulation performance U 4 ;

[0059] Adjustment qualification rate index: including adjustment accuracy U 5 , adjust the qualified rate U 6 ;

[0060] Adjustment economic indicators: including adjustment cost U7 .

[0061] (2) For the different aggregated resources in the virtual power plant, conduct resource information surveys, perform performance tests on the resources, and calculate their evaluation indicators.

[0062] (3) Use fuzzy comprehensive evaluation method to determine the weights of various indicators of different aggregated resources;

[0063] (3.1) Based on the evaluation indicators of virtual power plant operation performance and operating income, construct the evaluation factor set S of different resources i

[0064] S i ={S i1 ,S i2 ,…S ir}r=1,2,…;i=1,2,…n

[0065] Where r is the evaluation index of aggregated resource construction, and n is the number of different aggregated resources connected to the virtual power plant.

[0066] (3.2) Constructing the weight set of evaluation indicators for different aggregated resources

[0067] W i = {W i1 ,W i2 ,…W ir}r=1,2,…;i=1,2,…n

[0068] Where W i is the weight set of each evaluation indicator of aggregate resource i, r is the evaluation indicator constructed by the aggregate resource, and n is the number of different aggregate resources connected to the virtual power plant.

[0069] (3.3) Construct the evaluation level V.

[0070] V={v 1 ,v 2 ,v 3 ,v 4 ,v 5}={excellent, good, average, fair, poor}

[0071] The corresponding rules for each element of the evaluation set are: excellent = 0.95, good = 0.85, medium = 0.75, fair = 0.7, and poor = 0.5.

[0072] (3.4) Construct the membership fuzzy relationship matrix R

[0073]

[0074] In the formula, r ij S is the evaluation factor concentration indexi With rating V in V m The relationship between

[0075] (3.5) Construct the fuzzy comprehensive evaluation matrix H, calculate the contribution value B, and then obtain the contribution value b of the i-th aggregated resource i .

[0076] H=W·R

[0077] B=H·V T

[0078] (4) Obtain the clearing results of virtual power plants participating in the electricity market and allocate the contribution of different aggregated resources to the comprehensive operation of virtual power plants based on the dynamic alliance benefit allocation model;

[0079] (4.1) Obtain the clearing results of the virtual power plant participating in the electricity market, and obtain the quantity and price clearing results of the virtual power plant participating in the electricity energy market, ancillary service market and demand response market from the electricity market trading platform;

[0080] (4.2) Based on the real-time active power measurement of different aggregated resources collected by the virtual power plant at the current time t and the results of the power market, the total allocation amount of the virtual power plant adjustment ΔV is obtained t , and the adjustment amount of each aggregation member is X i .

[0081]

[0082] Where: ΔV t is the adjustment amount of the virtual power plant at time t, E rt is the winning bid amount at time t in the clearing result of the electricity market, P ti is the real-time active power measurement of resource i at time t.

[0083] (4.3) According to the adjustable capacity of different aggregated resources and the requirements of aggregated resources to participate in the electric energy market, ancillary service market or demand response market, select the aggregated resources that participate in the corresponding electric energy market, ancillary service market or demand response market to perform regulation. Let the number of aggregated resources after selection be M, and the adjustment amount Δx of the i-th aggregated resource at time t be ti , its maximum adjustment The constraints are satisfied:

[0084] 0≤Δx ti ≤ΔV t

[0085]

[0086] (4.4) Contribution value b based on different aggregated resources i, establish the utility function, and solve the equation to obtain the adjusted allocation values ​​of different aggregation group members.

[0087]

[0088] like Figure 3 As shown, the allocation system based on the contribution of aggregated resources to the comprehensive operation of virtual power plants of the present invention adopts the above-mentioned method based on the contribution of aggregated resources to the comprehensive operation of virtual power plants, and includes the following modules:

[0089] An aggregate resource evaluation index system construction module is used to construct an aggregate resource evaluation index system based on aggregate resources and virtual power plant operating performance and operating benefits;

[0090] Aggregate resource performance test module, used to perform performance tests on different aggregate resources connected to the virtual power plant and collect real-time measurement data of aggregate resources;

[0091] The aggregate resource evaluation index calculation module is used to calculate the evaluation index of the aggregate resource by combining the real-time data of the adjustment performance of the aggregate resource and the survey equipment parameters of the resource, and to perform weight calculation on the evaluation index of each resource to generate the evaluation grade of each resource;

[0092] The power market clearing result acquisition module is used to obtain the quantity and price clearing results of the virtual power plant participating in the electric energy market, ancillary service market and demand response market from the power market trading platform;

[0093] The module for allocating the comprehensive operational contribution of aggregated resources establishes a dynamic alliance profit distribution model, which is used to allocate the comprehensive operational contribution of each aggregated resource to the virtual power plant based on the weight of each aggregated resource evaluation indicator and the dynamic alliance profit distribution model to obtain the allocation factor of each resource entity.

[0094] Further, the aggregated resources include at least two of distributed photovoltaic, distributed wind power, distributed energy storage, and adjustable load;

[0095] The aggregate resource evaluation index system includes peak regulation performance index, frequency regulation performance index, regulation qualification rate index and regulation economy index;

[0096] The peak-shaving performance indicators include peak-shaving regulation contribution indicators and peak-shaving regulation capacity indicators; frequency regulation performance indicators include frequency regulation mileage and frequency regulation performance; regulation qualification rate indicators include regulation accuracy and regulation qualification rate; regulation economic indicators include regulation cost.

[0097] The computer storage medium of the present invention stores a computer program thereon, and when the computer program is executed by a processor, the method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant as described above is implemented.

[0098] The computer device described in the present invention includes a storage device, a processor, and a computer program stored in the storage device and executable on the processor. It is characterized in that when the processor executes the computer program, it implements the above-mentioned method for allocating the contribution of aggregated resources to the comprehensive operation of the virtual power plant.

[0099] Therefore, the present invention takes into account the influence of aggregated resources on the virtual power plant's participation in frequency regulation, frequency modulation, electric energy and other power market transactions and control effects, proposes to use fuzzy comprehensive evaluation method to determine the weights of various indicators of different aggregated resources, and proposes a method for allocating the contribution of different aggregated resources to the comprehensive operation of virtual power plants based on the dynamic alliance benefit allocation model, quantifying and allocating the contribution of different aggregated resources to the comprehensive operation of virtual power plants. The present invention can effectively and reasonably allocate the prices generated by the joint action of different aggregated resources to each resource subject, thereby forming a long-term and stable agency relationship.

Claims

1. A method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant, characterized in that: The following steps are involved: Step 1: Construct an aggregate resource evaluation index system based on the aggregate resources and virtual power plant operating performance and operating income; Step 2: Conduct aggregation performance test based on the virtual power plant platform and calculate aggregation resource evaluation indicators; Step 3: Use fuzzy comprehensive evaluation method to determine the weight of each aggregate resource evaluation indicator; Step 4: Obtain the clearing results of the virtual power plant participating in the electricity market, and allocate the contribution of each aggregated resource to the comprehensive operation of the virtual power plant based on the dynamic alliance benefit allocation model according to the weight of each aggregated resource evaluation indicator.

2. The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to claim 1, characterized in that: The aggregated resources include at least two of distributed photovoltaics, distributed wind power, distributed energy storage, and adjustable loads.

3. The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to claim 1, characterized in that: The aggregate resource evaluation index system includes a peak regulation performance index, a frequency regulation performance index, a regulation qualification rate index and a regulation economy index.

4. The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to claim 3, characterized in that: The peak-shaving performance indicators include peak-shaving regulation contribution indicators and peak-shaving regulation capacity indicators; frequency regulation performance indicators include frequency regulation mileage and frequency regulation performance; regulation qualification rate indicators include regulation accuracy and regulation qualification rate; regulation economic indicators include regulation cost.

5. The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to claim 4, characterized in that: The fuzzy comprehensive evaluation method is used to determine the weight of each aggregation resource evaluation indicator, as follows: (3.1) Based on the evaluation indicators of virtual power plant operation performance and operating income, the evaluation factor set S of aggregated resources is constructed i , as follows: S i ={S i1 ,S i2 ,…S ir }r=1,2,…;i=1,2,…n Where r is the evaluation index of aggregated resource construction, n is the number of different aggregated resources connected to the virtual power plant; (3.2) Construct the weight set W of each evaluation index of aggregated resources i , as follows: W i ={W i1 ,W i2 ,…W ir } r=1,2,…;i=1,2,…n Where W i is the weight set of each evaluation indicator of aggregate resource i; (3.3) Construct the evaluation level V: V={V1,V2,…,V m }m=1,2,… Where V m is the evaluation grade value of the mth level, and m is the total number of evaluation grades; (3.4) Construct the membership fuzzy relationship matrix R: In the formula, r ij S is the evaluation factor concentration index i With rating V in V m The affiliation between them; (3.5) Construct the fuzzy comprehensive evaluation matrix H, calculate the contribution value B, and determine the contribution value b of the i-th aggregated resource i : H=W·R B=H·V T 。 6. The method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant according to claim 1, characterized in that: Based on the dynamic alliance benefit allocation model, the contribution of different aggregated resources to the comprehensive operation of the virtual power plant is allocated as follows: (4.1) Based on the real-time active power measurements of different aggregated resources collected by the virtual power plant at time t and the results of the power market, the total allocation amount of the virtual power plant adjustment ΔV is obtained. t : Where ΔV t is the adjustment amount of the virtual power plant at time t, E rt is the winning bid amount of the electricity market clearing result at time t, P ti The real-time active power measurement of aggregate resource i at time t; (4.2) Based on the adjustable capacity of different aggregated resources and the requirements for aggregated resources to participate in the electric energy market, ancillary service market or demand response market, select aggregated resources that participate in the corresponding electric energy market, ancillary service market or demand response market for regulation; Assume that the number of aggregated resources after screening is M, and the adjustment amount Δx of the i-th aggregated resource at time t is ti , its maximum adjustment The constraints are satisfied: 0≤Δx ti ≤ΔV t (4.3) Contribution value b based on different aggregated resources i , establish the utility function and obtain the adjusted allocation values ​​of different aggregated resources: In the formula, X ti is the adjustment amount of the entity to which the i-th aggregate resource belongs at time t.

7. The allocation system based on the contribution of aggregated resources to the comprehensive operation of virtual power plants according to claim 1 is characterized in that: include An aggregate resource evaluation index system construction module is used to construct an aggregate resource evaluation index system based on aggregate resources and virtual power plant operating performance and operating benefits; Aggregate resource performance test module, used to perform performance tests on different aggregate resources connected to the virtual power plant and collect real-time measurement data of aggregate resources; The aggregate resource evaluation index calculation module is used to calculate the evaluation index of the aggregate resource by combining the real-time data of the adjustment performance of the aggregate resource and the survey equipment parameters of the resource, and to perform weight calculation on the evaluation index of each resource to generate the evaluation grade of each resource; The power market clearing result acquisition module is used to obtain the quantity and price clearing results of the virtual power plant participating in the electric energy market, ancillary service market and demand response market from the power market trading platform; The module for allocating the comprehensive operational contribution of aggregated resources establishes a dynamic alliance profit distribution model, which is used to allocate the comprehensive operational contribution of each aggregated resource to the virtual power plant based on the weight of each aggregated resource evaluation indicator and the dynamic alliance profit distribution model to obtain the allocation factor of each resource entity.

8. The allocation system based on the contribution of aggregated resources to the comprehensive operation of virtual power plants according to claim 7 is characterized in that: The aggregated resources include at least two of distributed photovoltaic, distributed wind power, distributed energy storage, and adjustable load; The aggregate resource evaluation index system includes peak regulation performance index, frequency regulation performance index, regulation qualification rate index and regulation economy index; The peak-shaving performance indicators include peak-shaving regulation contribution indicators and peak-shaving regulation capacity indicators; frequency regulation performance indicators include frequency regulation mileage and frequency regulation performance; regulation qualification rate indicators include regulation accuracy and regulation qualification rate; regulation economic indicators include regulation cost.

9. A computer storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it implements the method for allocating the contribution of aggregated resources to the comprehensive operation of a virtual power plant as described in any one of claims 1-6.

10. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the method for allocating the contribution of aggregated resources to the comprehensive operation of the virtual power plant as described in any one of claims 1-6.

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