Regulation and control income distribution method and system for virtual power plant operator and agent user thereof

Abstract

The invention discloses a regulation and control income distribution method and system for a virtual power plant operator and an agent user thereof, and the method comprises the steps: reasonably distributing the incomes of the virtual power plant operator and the agent user thereof based on the overall regulation and control contribution degree of the agent user to a virtual power plant, and improving the efficiency of the virtual power plant. The enthusiasm of the virtual power plant participating in power grid regulation is improved, and the flexible resource regulation potential of the user side is fully mined. The method can reasonably consider the benefits of the virtual power plant operator and the agent user, avoids the influence of overshoot or negative regulation of part of users, achieves the benefit balance in the virtual power plant, and effectively motivates the virtual power plant operator and the agent user to actively participate in power grid regulation and control.

Description

Technical Field

[0001] The present invention relates to the technical field of power system automation, and in particular to a method and system for allocating control revenues of a virtual power plant operator and its proxy users. Background Art

[0002] Virtual power plants are the core of the new power system's source-grid-load coordination. They effectively solve problems such as the shortage of flexible regulation resources and the difficulty in absorbing a high proportion of new energy. Their importance is becoming increasingly prominent. Virtual power plant operators aggregate distributed flexible resources such as distributed power sources, energy storage, charging piles, and controllable loads on the user side to form an agency relationship. They participate in grid regulation scenarios such as demand response and ancillary services as an aggregate and obtain benefits based on the regulation situation. The regulation benefits obtained need to be distributed between the virtual power plant operator and the proxy user. If the distribution is uneven, it will cause the collapse of trust between the virtual power plant operator and the proxy user, non-cooperation with regulation, and the collapse of the agency relationship. In serious cases, the safety of grid operation will be affected due to non-regulation / disorderly regulation.

[0003] Virtual power plant operators and agent users generally sign an agency contract to agree on the user share ratio, but it is particularly important to implement the agency contract and reasonably determine the distribution plan of the regulation income between the virtual power plant operator and the agent user to protect the interests of both parties and promote the "sustainable" development of the virtual power plant agency relationship. Since some agent users may have "overregulation" or "negative regulation", if the income is calculated according to the actual regulation amount of the agent user, it may cause the virtual power plant operator to suffer losses or the "negative regulation" user to be unable to settle, which greatly damages the enthusiasm of the virtual power plant operator and some users with superior regulation performance to participate in the grid regulation, and cannot give full play to the flexible resource regulation potential on the user side. Summary of the invention

[0004] Purpose of the invention: The present invention aims to provide a method for allocating control profits of a virtual power plant operator and its proxy users, which is based on the proxy user's contribution to the overall control of the virtual power plant and reasonably allocates the profits of both the virtual power plant operator and its proxy users; another purpose of the present invention is to provide a system for allocating control profits of a virtual power plant operator and its proxy users.

[0005] Technical solution: The control profit distribution method of the virtual power plant operator and its proxy users described in the present invention comprises the following steps:

[0006] (1) Calculate the overall effective control amount of the virtual power plant based on the participation of the virtual power plant in grid control;

[0007] (2) Calculate the overall regulation benefits of the virtual power plant based on the overall effective regulation volume of the virtual power plant, taking into account the compensation price and regulation duration factors;

[0008] (3) Calculate the effective control amount of each proxy user based on the actual control behavior of each proxy user;

[0009] (4) Summarize the effective control amount of all proxy users and calculate the control contribution of each proxy user to the overall virtual power plant;

[0010] (5) Based on the overall regulation income of the virtual power plant, the regulation contribution of each agent user to the overall virtual power plant and the profit sharing ratio agreed in the agency contract, calculate the theoretical regulation income and actual regulation income of each agent user respectively;

[0011] (6) Subtract the sum of the actual regulation benefits of each proxy user from the overall regulation benefit of the virtual power plant to obtain the regulation benefit of the virtual power plant operator.

[0012] Furthermore, step (1) is specifically as follows:

[0013] Taking the virtual power plant as a whole, the overall effective control amount P of the virtual power plant is calculated according to the overall target control amount of the virtual power plant and the control completion rate of the virtual power plant. VPP,有效 :

[0014]

[0015] Where P VPP,实际 is the actual control quantity of the virtual power plant as a whole, P VPP,目标 is the overall target control quantity of the virtual power plant, I VPP is the virtual power plant control completion rate, I VPP,max ,I VPP,min They respectively represent the upper and lower limits of the virtual power plant regulation completion rate.

[0016] Furthermore, in step (2), the overall regulation benefit of the virtual power plant is R VPP as follows:

[0017] R VPP =P VPP,有效 ·C.K.

[0018] In the formula, C is the virtual power plant regulation compensation price, and K is the virtual power plant regulation duration coefficient.

[0019] Furthermore, in step (2), the virtual power plant regulation compensation price C varies according to the grid regulation scenario in which it participates, and the virtual power plant regulation compensation price C is a fixed compensation price or a market clearing price; wherein the grid regulation scenario includes peak shaving demand response, valley filling demand response, peak shaving auxiliary service and frequency regulation auxiliary service;

[0020] The virtual power plant control duration coefficient K is proportional to the actual control duration of the virtual power plant.

[0021] Furthermore, in step (3), the proxy user performs actual regulation according to the target regulation amount assigned by the virtual power plant operator, and the effective regulation amount of the proxy user is

[0022]

[0023] Where P user,有效,i is the effective control amount of proxy user i, P user,实际,i is the actual control amount of proxy user i, P user,目标,i is the target control amount of proxy user i, I user,i To regulate the completion rate of agent user i, I user,max ,I user,min is a constant, indicating the upper and lower limits of the completion rate of proxy user regulation, which can be determined and adjusted according to actual conditions;

[0024] Among them, the agent users of the virtual power plant include various types of electricity users who have distributed flexible resources such as distributed power sources, energy storage, charging piles, controllable loads, etc., and have independent power generation / power consumption user numbers.

[0025] Furthermore, in step (4), the proxy user's contribution to the overall regulation of the virtual power plant is

[0026]

[0027] Where D user,i is the contribution of proxy user i to the overall regulation of the virtual power plant, and N is the total number of proxy users aggregated by the virtual power plant.

[0028] Furthermore, in step (5), the virtual power plant operator and the agent user sign an agency contract to stipulate the user profit sharing ratio, which is determined by negotiation between the virtual power plant operator and each agent user.

[0029] Furthermore, in step (5), the theoretical and actual control benefits of each proxy user are

[0030] R user,理论,i =R VPP ·D user,i

[0031] R user,实际,i =R VPP ·D user,i ·λ i

[0032] In the formula, R user,理论,i Theoretically regulate the revenue of proxy user i, R user,实际,i is the actual control benefit of proxy user i, λ i Agree on the profit sharing ratio for proxy user i.

[0033] Furthermore, in step (6), the virtual power plant operator's regulation profit is

[0034]

[0035] In the formula, R ope Regulating revenue for virtual power plant operators.

[0036] The control profit distribution system for the virtual power plant operator and its proxy users of the present invention adopts the control profit distribution method for the virtual power plant operator and its proxy users, including:

[0037] A module for calculating the overall effective control amount of a virtual power plant is used to calculate the overall effective control amount of a virtual power plant according to the situation in which the virtual power plant participates in power grid control;

[0038] A module for calculating the overall regulation income of a virtual power plant is used to calculate the overall regulation income of a virtual power plant based on the overall effective regulation amount of the virtual power plant, taking into account the compensation price and regulation duration factors;

[0039] A module for calculating the effective control amount of each proxy user is used to calculate the effective control amount of each proxy user according to the actual control behavior of each proxy user;

[0040] A module for calculating the control contribution of each proxy user to the overall virtual power plant is used to summarize the effective control amounts of all proxy users and calculate the control contribution of each proxy user to the overall virtual power plant;

[0041] A module for calculating the theoretical regulation income and actual regulation income of each proxy user is used to calculate the theoretical regulation income and actual regulation income of each proxy user based on the overall regulation income of the virtual power plant, the regulation contribution of each proxy user to the overall virtual power plant and the sharing ratio agreed in the agency contract;

[0042] The module for calculating the regulation income of the virtual power plant operator is used to subtract the sum of the actual regulation income of each proxy user from the overall regulation income of the virtual power plant to obtain the regulation income of the virtual power plant operator.

[0043] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: 1. Based on the contribution of proxy users to the overall regulation of virtual power plants, the present invention reasonably distributes the benefits of virtual power plant operators and their proxy users, improves the enthusiasm of virtual power plants to participate in grid regulation, and fully taps the potential for flexible resource regulation on the user side; 2. The present invention can reasonably consider the interests of both virtual power plant operators and proxy users, avoid the impact of "overregulation" or "negative regulation" of some users, achieve a balance of interests within the virtual power plant, and effectively encourage virtual power plant operators and their proxy users to actively participate in grid regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1A flowchart of the control profit distribution method for a virtual power plant operator and its proxy users of the present invention;

[0045] Figure 2 It is a structural schematic diagram of the virtual power plant and its proxy user-agent relationship of the present invention. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings.

[0047] The control profit distribution method of the virtual power plant operator and its proxy user of the present invention comprises the following steps:

[0048] (1) Based on the participation of virtual power plants in grid regulation, the overall effective regulation of virtual power plants is calculated.

[0049] Taking the virtual power plant as a whole, the overall effective control amount P of the virtual power plant is calculated according to the overall target control amount of the virtual power plant and the control completion rate of the virtual power plant. VPP,有效 :

[0050]

[0051] Where P VPP,实际 is the actual control quantity of the virtual power plant as a whole, P VPP,目标 is the overall target control quantity of the virtual power plant, I VPP is the virtual power plant control completion rate, I VPP,max ,I VPP,min They respectively represent the upper and lower limits of the virtual power plant regulation completion rate.

[0052] (2) Based on the overall effective control volume of the virtual power plant, and taking into account the compensation price and control duration factors, calculate the overall control benefits of the virtual power plant.

[0053] Overall control benefit of virtual power plant R VPP as follows:

[0054] R VPP =P VPP,有效 ·C.K.

[0055] In the formula, C is the virtual power plant regulation compensation price, and K is the virtual power plant regulation duration coefficient.

[0056] The virtual power plant regulation compensation price C varies according to the grid regulation scenario in which it participates. The virtual power plant regulation compensation price C is a fixed compensation price or a market clearing price. Grid regulation scenarios include peak shaving demand response, valley filling demand response, peak shaving auxiliary services and frequency regulation auxiliary services.

[0057] The virtual power plant control time coefficient K is proportional to the actual control time of the virtual power plant. The virtual power plant control time coefficient changes with the actual control time of the virtual power plant. In principle, the longer the control time, the larger the control time coefficient.

[0058] (3) Calculate the effective control amount of each proxy user based on the actual control behavior of each proxy user.

[0059] The proxy user performs actual regulation according to the target regulation amount assigned by the virtual power plant operator. The effective regulation amount of the proxy user is

[0060]

[0061] Where P user,有效,i is the effective control amount of proxy user i, P user,实际,i is the actual control amount of proxy user i, P user,目标,i is the target control amount of proxy user i, I user,i To regulate the completion rate of agent user i, I user,max ,I user,min is a constant, indicating the upper and lower limits of the completion rate of proxy user regulation, which can be determined and adjusted according to actual conditions;

[0062] Among them, the agent users of the virtual power plant include various types of electricity users who have distributed flexible resources such as distributed power sources, energy storage, charging piles, controllable loads, etc., and have independent power generation / power consumption user numbers.

[0063] (4) Summarize the effective control amounts of all proxy users and calculate the control contribution of each proxy user to the overall control of the virtual power plant.

[0064] The contribution of the proxy user to the overall regulation of the virtual power plant is

[0065]

[0066] Where D user,i is the contribution of proxy user i to the overall regulation of the virtual power plant, and N is the total number of proxy users aggregated by the virtual power plant.

[0067] (5) Based on the overall regulation benefit of the virtual power plant, the regulation contribution of each agent user to the overall virtual power plant and the profit sharing ratio agreed in the agency contract, the theoretical regulation benefit and actual regulation benefit of each agent user are calculated respectively.

[0068] The virtual power plant operator and the agent user sign an agency contract to agree on the user profit sharing ratio. The profit sharing ratio is determined by negotiation between the virtual power plant operator and each agent user and can be different, with a value between 0-1.

[0069] The theoretical and actual control benefits of each proxy user are

[0070] Ruser,理论,i =R VPP ·D user,i

[0071] R user,实际,i =R VPP ·D user,i ·λ i

[0072] In the formula, R user,理论,i Theoretically regulate the revenue of proxy user i, R user,实际,i is the actual control benefit of proxy user i, λ i Agree on the profit sharing ratio for proxy user i.

[0073] (6) Subtract the sum of the actual regulation benefits of each proxy user from the overall regulation benefit of the virtual power plant to obtain the regulation benefit of the virtual power plant operator.

[0074] The virtual power plant operator's regulation revenue is

[0075]

[0076] In the formula, R ope Regulating revenue for virtual power plant operators.

[0077] The control profit distribution system for the virtual power plant operator and its proxy users of the present invention adopts the control profit distribution method for the virtual power plant operator and its proxy users, including:

[0078] A module for calculating the overall effective control amount of a virtual power plant is used to calculate the overall effective control amount of a virtual power plant according to the situation in which the virtual power plant participates in power grid control;

[0079] A module for calculating the overall regulation income of a virtual power plant is used to calculate the overall regulation income of a virtual power plant based on the overall effective regulation amount of the virtual power plant, taking into account the compensation price and regulation duration factors;

[0080] A module for calculating the effective control amount of each proxy user is used to calculate the effective control amount of each proxy user according to the actual control behavior of each proxy user;

[0081] A module for calculating the control contribution of each proxy user to the overall virtual power plant is used to summarize the effective control amounts of all proxy users and calculate the control contribution of each proxy user to the overall virtual power plant;

[0082] A module for calculating the theoretical regulation income and actual regulation income of each proxy user is used to calculate the theoretical regulation income and actual regulation income of each proxy user based on the overall regulation income of the virtual power plant, the regulation contribution of each proxy user to the overall virtual power plant and the sharing ratio agreed in the agency contract;

[0083] The module for calculating the regulation income of the virtual power plant operator is used to subtract the sum of the actual regulation income of each proxy user from the overall regulation income of the virtual power plant to obtain the regulation income of the virtual power plant operator.

[0084] A virtual power plant aggregates 5 proxy users and participates in grid regulation (peak shaving demand response scenario) on a certain day. The overall target regulation volume of the virtual power plant is 10,000 kW, the actual regulation volume is 8,500 kW, and the regulation time is 3 hours. The actual regulation situation of each proxy user is shown in Table 1, and the sharing coefficient agreed in the agency contract is shown in Table 2. It is necessary to distribute the regulation income to the virtual power plant operator and each proxy user.

[0085] Table 1: Actual control situation of each proxy user

[0086]

[0087] Table 2: The profit sharing coefficients agreed in the agency contracts of each agent user

[0088]

[0089] Step 1: According to the overall control of the virtual power plant, the control completion rate of the virtual power plant is calculated to be 85%. The upper and lower limits of the control completion rate of the virtual power plant are set to 120% and 80% respectively, and the overall effective control capacity of the virtual power plant is calculated to be 8500kW.

[0090] Step 2: According to the virtual power plant control scenario and control duration, the virtual power plant compensation price is set to 8 yuan / kW, the control duration coefficient is set to 1.1, and the overall control income of the virtual power plant is calculated to be 74,800 yuan.

[0091] Step 3: The upper and lower limits of the proxy user control completion rate are set to 120% and 80% respectively, and the control completion rate and effective control amount of each proxy user are calculated. The results are shown in Table 3:

[0092] Table 3: Effective control amount and control contribution of each proxy user

[0093]

[0094] After analysis, user 1 is an "under-regulation" user, user 2's regulation does not meet the standard, user 3 is an "over-regulation" user, and users 4 and 5 meet the standard.

[0095] Step 4: Calculate the control contribution of each proxy user. The results are shown in Table 4:

[0096] Table 4: Contribution of each proxy user to regulation

[0097]

[0098] Step 5: Combine the agreed profit sharing coefficients of each proxy user to calculate the theoretical and actual regulation benefits of each proxy user. The results are shown in Table 5:

[0099] Table 5: Regulation income of each agent user

[0100]

[0101] Step 6: Calculate the regulation income of the virtual power plant operator, the result is 19,811.9 yuan.

[0102] Based on the results of the previous six steps, the calculation results of the technical solution of the present invention in this embodiment are shown in Table 6:

[0103] Table 6: Calculation results of the technical solution of the present invention under the embodiment

[0104]

[0105] By analyzing Table 6, it can be found that: User 1 is a "negative regulation" user. The present invention can well avoid the influence of "negative regulation", successfully identify "negative regulation" users, and does not interfere with the settlement of other users; User 3 is an "overregulation" user, and the actual regulation amount is the same as that of User 5, but due to the influence of "overregulation", the effective regulation amount and regulation contribution are both less than User 5, and the corresponding theoretical regulation income is also less; User 3's actual regulation amount is greater than User 4, but due to the influence of "overregulation", the effective regulation amount and regulation contribution are the same as User 4, and the corresponding theoretical regulation income is also the same. The actual regulation income is the same because the user sharing ratio is 0.7. In summary, the present invention adopts technical methods to effectively identify the "overregulation" or "negative regulation" influence of some users, reasonably distribute the regulation income of virtual power plant operators and proxy users based on contribution, achieve interest balance within the virtual power plant, and effectively encourage virtual power plant operators and their proxy users to actively participate in power grid regulation.

Claims

1. A method for allocating control revenues between a virtual power plant operator and its proxy users, characterized in that: The following steps are involved: (1) Calculate the overall effective control amount of the virtual power plant based on the participation of the virtual power plant in grid control; (2) Calculate the overall regulation benefits of the virtual power plant based on the overall effective regulation volume of the virtual power plant, taking into account the compensation price and regulation duration factors; (3) Calculate the effective control amount of each proxy user based on the actual control behavior of each proxy user; (4) Summarize the effective control amount of all proxy users and calculate the control contribution of each proxy user to the overall virtual power plant; (5) Based on the overall regulation income of the virtual power plant, the regulation contribution of each agent user to the overall virtual power plant and the profit sharing ratio agreed in the agency contract, calculate the theoretical regulation income and actual regulation income of each agent user respectively; (6) Subtract the sum of the actual regulation benefits of each proxy user from the overall regulation benefit of the virtual power plant to obtain the regulation benefit of the virtual power plant operator.

2. The control profit distribution method for the virtual power plant operator and its proxy users according to claim 1 is characterized in that: Step (1) is as follows: Taking the virtual power plant as a whole, the overall effective control amount P of the virtual power plant is calculated according to the overall target control amount of the virtual power plant and the control completion rate of the virtual power plant. VPP,有效 : Where P VPP,实际 is the actual control quantity of the virtual power plant as a whole, P VPP,目标 is the overall target control quantity of the virtual power plant, I VPP is the virtual power plant control completion rate, I VPP,max ,I VPP,min They respectively represent the upper and lower limits of the virtual power plant regulation completion rate.

3. The control profit distribution method for the virtual power plant operator and its proxy users according to claim 2 is characterized in that: In step (2), the overall regulation benefit of the virtual power plant is R VPP as follows: R VPP =P VPP,有效 ·C·K In the formula, C is the virtual power plant regulation compensation price, and K is the virtual power plant regulation duration coefficient.

4. The control profit distribution method of the virtual power plant operator and its proxy users according to claim 3 is characterized in that: In step (2), the virtual power plant regulation compensation price C varies according to the grid regulation scenario in which it participates, and the virtual power plant regulation compensation price C is a fixed compensation price or a market clearing price; wherein the grid regulation scenarios include peak shaving demand response, valley filling demand response, peak shaving auxiliary services, and frequency regulation auxiliary services; The virtual power plant control duration coefficient K is proportional to the actual control duration of the virtual power plant.

5. The control profit distribution method of the virtual power plant operator and its proxy users according to claim 4 is characterized in that: In step (3), the proxy user performs actual regulation according to the target regulation amount assigned by the virtual power plant operator. The effective regulation amount of the proxy user is Where P user,有效,i is the effective control amount of proxy user i, P user,实际,i is the actual control amount of proxy user i, P user,目标,i is the target control amount of proxy user i, I user,i To regulate the completion rate of agent user i, I user,max ,I user,min is a constant, indicating the upper and lower limits of the completion rate of proxy user regulation, which can be determined and adjusted according to actual conditions; Among them, the agent users of the virtual power plant include various types of electricity users who have distributed flexible resources such as distributed power sources, energy storage, charging piles, controllable loads, etc., and have independent power generation / power consumption user numbers.

6. The control profit distribution method of the virtual power plant operator and its proxy users according to claim 5 is characterized in that: In step (4), the proxy user's contribution to the overall regulation of the virtual power plant is Where D user,i is the contribution of proxy user i to the overall regulation of the virtual power plant, and N is the total number of proxy users aggregated by the virtual power plant.

7. The control profit distribution method for a virtual power plant operator and its proxy users according to claim 6 is characterized in that: In step (5), the virtual power plant operator and the agent user sign an agency contract to stipulate the user profit sharing ratio, which is determined by negotiation between the virtual power plant operator and each agent user.

8. The control profit distribution method of the virtual power plant operator and its proxy users according to claim 7 is characterized in that: In step (5), the theoretical and actual control benefits of each proxy user are R user,理论,i =R VPP ·D user,i R user,实际,i =R VPP ·D user,i ·l i In the formula, R user,理论,i Theoretically regulate the revenue of proxy user i, R user,实际,i is the actual control benefit of proxy user i, λ i Agree on the profit sharing ratio for proxy user i.

9. The control profit distribution method of the virtual power plant operator and its proxy users according to claim 8 is characterized in that: In step (6), the virtual power plant operator's regulation profit is In the formula, R ope Regulating revenue for virtual power plant operators.

10. A control profit distribution system for a virtual power plant operator and its proxy users, adopting the control profit distribution method for a virtual power plant operator and its proxy users as claimed in any one of claims 1 to 9, characterized in that: include: A module for calculating the overall effective control amount of a virtual power plant is used to calculate the overall effective control amount of a virtual power plant according to the situation in which the virtual power plant participates in power grid control; A module for calculating the overall regulation income of a virtual power plant is used to calculate the overall regulation income of a virtual power plant based on the overall effective regulation amount of the virtual power plant, taking into account the compensation price and regulation duration factors; A module for calculating the effective control amount of each proxy user is used to calculate the effective control amount of each proxy user according to the actual control behavior of each proxy user; A module for calculating the control contribution of each proxy user to the overall virtual power plant is used to summarize the effective control amounts of all proxy users and calculate the control contribution of each proxy user to the overall virtual power plant; A module for calculating the theoretical regulation income and actual regulation income of each proxy user is used to calculate the theoretical regulation income and actual regulation income of each proxy user based on the overall regulation income of the virtual power plant, the regulation contribution of each proxy user to the overall virtual power plant and the sharing ratio agreed in the agency contract; The module for calculating the regulation income of the virtual power plant operator is used to subtract the sum of the actual regulation income of each proxy user from the overall regulation income of the virtual power plant to obtain the regulation income of the virtual power plant operator.

Images