Electric energy storage aggregation type virtual power plant frequency modulation income distribution method

Abstract

The invention relates to the field of virtual power plant operation and control, in particular to an electric energy storage aggregation type virtual power plant frequency modulation income distribution method. Aiming at the process that the electric energy storage aggregation type virtual power plant participates in system frequency modulation, in the process that the independent electric energy storage unit in the virtual power plant participates in frequency modulation, an active power output curve of a slope-like function is provided for the system according to the capacity and the charge state of the independent electric energy storage unit; therefore, the effects of suppressing system frequency deviation at the early stage of frequency modulation and smoothly cutting out from the system after the frequency modulation process is finished are achieved. Based on the control strategy, the contribution of each internal independent electric energy storage unit to the maximum frequency deviation of the power system in the frequency modulation suppression process is quantified by adopting a dynamic power flow solving method, and on this basis, the total income of the electric energy storage aggregation type virtual power plant participating in the system frequency modulation is reasonably distributed among the internal independent electric energy storage units.

Description

Technical Field

[0001] The present invention relates to the field of virtual power plant operation and control, and in particular to a method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant. Background Art

[0002] Distributed energy storage units in the power system can be aggregated to form an energy storage aggregation virtual power plant and participate in the frequency regulation of the power system to obtain benefits. In this process, the output power control of independent energy storage units within the energy storage aggregation virtual power plant and the distribution of the total frequency regulation benefits of the virtual power plant among the internal independent energy storage units after the frequency regulation process are technical issues that have received much attention.

[0003] The main body of power system frequency regulation is the synchronous generator set within the system, but its output control response speed is slower than that of the energy storage system, so in the initial stage of active power imbalance in the system, it will cause a large system frequency deviation. The energy storage unit has a faster active power output regulation speed, which can play a role in suppressing system frequency deviation in the initial stage of frequency regulation. On the other hand, the ability of the energy storage unit to continuously output active power is limited by its own capacity. If it is discharged to the lower limit of its charge state during the frequency regulation process, the energy storage unit will be forced out. If the energy storage unit is still in the state of outputting active power before being cut out, the cutting out of the energy storage unit will become a new source of active power imbalance, causing a secondary drop in frequency. Therefore, it is necessary to optimize the output power control of independent energy storage units within the virtual power plant during the frequency regulation process.

[0004] As a whole, the electric energy storage aggregation virtual power plant obtains frequency regulation benefits from the power grid. Considering the differences in the operating conditions of the independent electric energy storage units within the virtual power plant, their active power output during the frequency regulation process is also different. Therefore, it is necessary to construct quantitative indicators to reflect their respective contributions in the frequency regulation process, which will serve as the basis for the distribution of the total frequency regulation benefits of the virtual power plant. Summary of the invention

[0005] The present invention proposes a method for allocating frequency regulation revenue of an energy storage aggregated virtual power plant. Aiming at the scenario where an energy storage aggregated virtual power plant participates in power system frequency regulation, the active power output scheme of independent energy storage units inside the energy storage aggregated virtual power plant during the frequency regulation process is designed. On this basis, based on the contribution of each independent energy storage unit to suppressing the maximum frequency deviation of the power system, a scheme for allocating the total revenue obtained by the energy storage aggregated virtual power plant participating in power system frequency regulation among the internal independent energy storage units is designed.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant, comprising the following steps:

[0007] S1: The grid dispatcher issues active power output and duration requirements for participating in power system frequency regulation to the energy storage aggregation virtual power plant based on the active power shortage of the power system;

[0008] S2: During the process of participating in the frequency regulation of the power system, the active power output of the independent energy storage units inside the energy storage aggregation virtual power plant is in the form of a ramp curve that decreases to zero at a fixed slope. Based on the operating conditions of the independent energy storage units inside, the ability of the energy storage aggregation virtual power plant to provide active power output for participating in the frequency regulation of the power system according to the issued indicators is verified, and the distribution plan of the active power output of the energy storage aggregation virtual power plant among the independent energy storage units inside is determined;

[0009] S3: After the power system frequency regulation process is completed, based on the maximum frequency offset reduction of the power system achieved by the internal independent energy storage units participating in the power system frequency regulation, the total revenue of the energy storage aggregation virtual power plant participating in the power system frequency regulation is distributed among the internal independent energy storage units.

[0010] Further as a preferred technical solution of the present invention, S2 comprises the following steps:

[0011] In the process of participating in the power system frequency regulation, the grid dispatcher issues an active power output of P to the energy storage aggregation virtual power plant based on the active power shortage of the power system. inc , and distribute it among the independent energy storage units within the energy storage aggregation virtual power plant. Assuming that there are n independent energy storage units within the energy storage aggregation virtual power plant, the active power output allocated to the i-th independent energy storage unit is According to formula (1),

[0012]

[0013] In formula (1) is the charge state of the ith independent energy storage unit at the initial moment of power system frequency regulation, is the upper limit constraint of the charge state of the ith independent energy storage unit, is the capacity of the i-th independent energy storage unit, is the discharge efficiency of the i-th independent energy storage unit;

[0014] The grid dispatcher issues a time requirement of T to the energy storage aggregation virtual power plant to participate in the power system frequency regulation based on the active power shortage of the power system. The upper limit constraint of the active power average value of the i-th independent energy storage unit in the energy storage aggregation virtual power plant is According to formula (2),

[0015]

[0016] like The energy storage aggregation virtual power plant can provide active power output for participating in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the process of participating in the power system frequency regulation is i (t) is a ramp curve that drops to zero at a fixed slope, and its mathematical expression is shown in formula (3):

[0017]

[0018] In formula (3), t is time;

[0019] like The energy storage aggregation virtual power plant cannot provide active power output to participate in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the power system frequency regulation process is i (t) is a ramp curve that decreases to zero at a fixed slope. Its mathematical expression is shown in formula (4). The energy storage aggregation virtual power plant reports to the grid dispatcher the actual active power output that can be provided for participating in the power system frequency regulation. Its calculation expression is shown in formula (5):

[0020]

[0021] Further as a preferred technical solution of the present invention, S3 comprises the following steps:

[0022] After the power system frequency regulation process is completed, the maximum frequency deviation of the power system is evaluated based on the power system dynamic power flow, and the dynamic power flow solution step is set to Δt (Δt can be divided by the time requirement T for the energy storage aggregation virtual power plant to participate in the power system frequency regulation, and there is ), the power system frequency is 50Hz at the initial moment of the frequency modulation process, and the power system frequency at the end of the j-th solution step is The power system frequency at the initial time of the step can be solved by the jth segment: Calculated by formula (6):

[0023]

[0024] In formula (6), K sys Total unit regulation power of the power system, H sys is the total inertia time constant of the power system, f N The rated frequency of the power system is 50Hz.

[0025] After completing the frequency calculation of the power system frequency regulation process, the maximum frequency deviation (Δf) of the power system is obtained based on formula (7):max ,

[0026]

[0027] Sort the independent energy storage units in the energy storage aggregation virtual power plant in descending order according to their average active power values ​​in the process of participating in the power system frequency regulation, and put the numbers of the internal independent energy storage units into the set S in sequence. 1 ,S 2 ,...,S m m≤n (internal independent electric energy storage unit numbers with the same average active power value are placed in the same collection), from the collection S 1 To begin with, assume that the set S 1 The internal independent electric energy storage unit corresponding to the number does not participate in the power system frequency regulation process. The frequency of the power system frequency regulation process is recalculated based on formula (8) to obtain the maximum frequency deviation (Δf(S) of the power system under this condition. 1 )) max ,

[0028]

[0029] Then assume that the set S 1 With S 2 The internal independent electric energy storage unit corresponding to the number does not participate in the power system frequency regulation process. The frequency of the power system frequency regulation process is recalculated based on formula (9) to obtain the maximum frequency deviation (Δf(S) of the power system under this condition. 1 ,S 2 )) max ,

[0030]

[0031] Continue this process until the set S is calculated. 1 To S m Under the condition that the internal independent energy storage units corresponding to the numbers do not participate in the power system frequency regulation process, the maximum frequency deviation (Δf(S 1 ,S 2 ,...,S m )) max ;

[0032] The total revenue of the energy storage aggregated virtual power plant participating in the power system frequency regulation is R sum , for the set S k For the internal independent energy storage unit corresponding to the number in (1≤k≤m), the allocated income R(S k ) is calculated based on formula (10),

[0033]

[0034] In formula (10), q(S k ) is the set S k The number of numbers included,

[0035] Complete the set S in sequence 1 To Set S m The benefits obtained by distributing the internal independent electric energy storage units corresponding to the numbers in the figure are calculated to realize the distribution of the total benefits of the electric energy storage aggregation virtual power plant participating in the power system frequency regulation among the internal independent electric energy storage units.

[0036] The present invention proposes a method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant. Compared with the prior art, the above technical solution has the following technical effects:

[0037] (1) When designing a control scheme for an energy storage aggregated virtual power plant to participate in the frequency regulation of the power system, the present invention integrates the frequency regulation instructions of the power grid dispatcher and the operating conditions of the independent energy storage units within the virtual power plant, and controls the output power of the independent energy storage units within the virtual power plant to gradually decrease from the maximum value to zero in the form of a ramp function during the frequency regulation process. On the one hand, the rapid output response characteristics of the energy storage units can be used to provide a strong frequency support for the power grid in the initial stage of frequency regulation. On the other hand, reducing the active power of the energy storage units to zero at the end of the frequency regulation can avoid the energy storage exiting the frequency regulation from causing a new impact on the active balance of the power system, thereby achieving its smooth cut-out.

[0038] (2) The present invention aims at the problem of allocating the total revenue of an energy storage aggregated virtual power plant participating in the frequency regulation of the power system among its internal independent energy storage units. Based on the quantitative calculation of its role in suppressing the maximum frequency deviation of the power system, a method for allocating the total frequency regulation revenue is designed. This method can more accurately evaluate the contribution of the energy storage units in the frequency regulation process, thereby providing a more reasonable revenue allocation plan. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a flow chart of a method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant according to an embodiment of the present invention;

[0040] Figure 2 The output active power curve of each independent electric energy storage unit in the embodiment of the present invention when participating in the frequency regulation of the power system. DETAILED DESCRIPTION

[0041] The present invention will be further explained below in conjunction with the detailed description of the accompanying drawings so that those skilled in the art can have a deeper understanding of the present invention and be able to implement it. However, the reference examples below are only used to explain the present invention and are not intended to limit the present invention.

[0042] Aiming at the scenario where an energy storage aggregated virtual power plant participates in the frequency regulation of the power system, the present invention designs an active power output control scheme for the independent energy storage units within the energy storage aggregated virtual power plant during the frequency regulation process, and based on the contribution of each independent energy storage unit to reducing the maximum frequency deviation of the power system, the benefits obtained by the overall participation of the energy storage aggregated virtual power plant in the frequency regulation of the power system are distributed among the independent energy storage units.

[0043] See also Figure 1 , a method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant, comprising the following steps:

[0044] S1: The grid dispatcher issues active power output and duration requirements for participating in power system frequency regulation to the energy storage aggregation virtual power plant based on the active power shortage of the power system;

[0045] S2: During the process of participating in the frequency regulation of the power system, the active power output of the independent energy storage units inside the energy storage aggregation virtual power plant is in the form of a ramp curve that decreases to zero at a fixed slope. Based on the operating conditions of the independent energy storage units inside, the ability of the energy storage aggregation virtual power plant to provide active power output for participating in the frequency regulation of the power system according to the issued indicators is verified, and the distribution plan of the active power output of the energy storage aggregation virtual power plant among the independent energy storage units inside is determined;

[0046] Specifically, during the power system frequency regulation process, the grid dispatcher issues an active power output of P to the energy storage aggregation virtual power plant based on the active power shortage of the power system. inc , and distribute it among the independent energy storage units within the energy storage aggregation virtual power plant. Assuming that there are n independent energy storage units within the energy storage aggregation virtual power plant, the active power output allocated to the i-th independent energy storage unit is According to formula (1),

[0047]

[0048] In formula (1) is the charge state of the ith independent energy storage unit at the initial moment of power system frequency regulation, is the upper limit constraint of the charge state of the ith independent energy storage unit, is the capacity of the i-th independent energy storage unit, is the discharge efficiency of the i-th independent energy storage unit;

[0049] Specifically, in the present invention, if the grid dispatcher issues an active power output P to the energy storage aggregation virtual power plant to participate in the power system frequency regulation, incThe electric energy storage aggregation virtual power plant has 4 independent electric energy storage units, and its operating parameters are shown in Table 1:

[0050] Table 1 Operating parameters of independent electric energy storage units within the electric energy storage aggregation virtual power plant

[0051]

[0052] The grid dispatcher issues a time requirement of T to the energy storage aggregation virtual power plant to participate in the power system frequency regulation based on the active power shortage of the power system. The upper limit constraint of the active power average value of the i-th independent energy storage unit in the energy storage aggregation virtual power plant is According to formula (2),

[0053]

[0054] Specifically, in the example of the present invention, the duration T required for participating in the frequency regulation of the power system is 1 minute. Combined with the parameters shown in Table 1, the active power output and the upper limit constraint of the active power average value of each independent electric energy storage unit can be calculated based on formula (1) and formula (2), as shown in Table 2:

[0055] Table 2 Active power output and upper limit constraints of active power average value of each independent internal energy storage unit

[0056]

[0057] like The energy storage aggregation virtual power plant can provide active power output for participating in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the process of participating in the power system frequency regulation is i (t) is a ramp curve that drops to zero at a fixed slope, and its mathematical expression is shown in formula (3):

[0058]

[0059] In formula (3), t is time;

[0060] like The energy storage aggregation virtual power plant cannot provide active power output to participate in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the power system frequency regulation process is i (t) is a ramp curve that decreases to zero at a fixed slope. Its mathematical expression is shown in formula (4). The energy storage aggregation virtual power plant reports to the grid dispatcher the actual active power output that can be provided for participating in the power system frequency regulation. Its calculation expression is shown in formula (5):

[0061]

[0062] From the data calculated in Table 2, it can be seen that the energy storage aggregation virtual power plant can provide active power output for participating in the power system frequency regulation according to the issued indicators. The output active power curve of each independent energy storage unit in the process of participating in the power system frequency regulation is as follows: Figure 2 shown.

[0063] S3: After the power system frequency regulation process is completed, based on the maximum frequency offset reduction of the power system achieved by the internal independent energy storage units participating in the power system frequency regulation, the total revenue of the energy storage aggregation virtual power plant participating in the power system frequency regulation is distributed among the internal independent energy storage units.

[0064] Specifically, after the power system frequency regulation process is completed, the maximum frequency deviation of the power system is evaluated based on the power system dynamic power flow, and the dynamic power flow solution step size is set to Δt (Δt can be divided by the time requirement T for the electric energy storage aggregation virtual power plant to participate in the power system frequency regulation, and there is ), the power system frequency is 50Hz at the initial moment of the frequency modulation process, and the power system frequency at the end of the j-th solution step is The power system frequency at the initial time of the step can be solved by the jth segment: Calculated by formula (6):

[0065]

[0066] In formula (6), K sys Total unit regulation power of the power system, H sys is the total inertia time constant of the power system, f N The rated frequency of the power system is 50Hz.

[0067] After completing the frequency calculation of the power system frequency regulation process, the maximum frequency deviation (Δf) of the power system is obtained based on formula (7): max ,

[0068]

[0069] Sort the independent energy storage units in the energy storage aggregation virtual power plant in descending order according to their average active power values ​​in the process of participating in the power system frequency regulation, and put the numbers of the internal independent energy storage units into the set S in sequence. 1 ,S 2 ,...,S m m≤n (internal independent electric energy storage unit numbers with the same average active power value are placed in the same collection), from the collection S 1 To begin with, assume that the set S 1The internal independent electric energy storage unit corresponding to the number does not participate in the power system frequency regulation process. The frequency of the power system frequency regulation process is recalculated based on formula (8) to obtain the maximum frequency deviation (Δf(S) of the power system under this condition. 1 )) max ,

[0070]

[0071] Then assume that the set S 1 With S 2 The internal independent electric energy storage unit corresponding to the number does not participate in the power system frequency regulation process. The frequency of the power system frequency regulation process is recalculated based on formula (9) to obtain the maximum frequency deviation (Δf(S) of the power system under this condition. 1 ,S 2 )) max ,

[0072]

[0073] Continue this process until the set S is calculated. 1 To S m Under the condition that the internal independent energy storage units corresponding to the numbers do not participate in the power system frequency regulation process, the maximum frequency deviation (Δf(S 1 ,S 2 ,...,S m )) max ;

[0074] Specifically to the example of the present invention, the following are calculated in sequence:

[0075] 1) When all independent energy storage units in the energy storage aggregation virtual power plant participate in frequency regulation, the maximum frequency deviation of the power system is 0.2991 Hz;

[0076] 2) When the No. 2 independent energy storage unit in the energy storage aggregation virtual power plant does not participate in frequency regulation, the maximum frequency deviation of the power system is 0.4086 Hz;

[0077] 3) Under the condition that the No. 2 and No. 1 independent energy storage units in the energy storage aggregation virtual power plant do not participate in frequency regulation, the maximum frequency deviation of the power system is 0.5049 Hz;

[0078] 4) Under the condition that the independent energy storage units 2, 1 and 3 in the energy storage aggregation virtual power plant do not participate in frequency regulation, the maximum frequency deviation of the power system is 0.5772Hz;

[0079] 4) Under the condition that all independent energy storage units within the energy storage aggregation virtual power plant do not participate in frequency regulation, the maximum frequency deviation of the power system is 0.6319 Hz.

[0080] The total revenue of the energy storage aggregated virtual power plant participating in the power system frequency regulation is R sum , for the set S k For the internal independent energy storage unit corresponding to the number in (1≤k≤m), the allocated income R(S k ) is calculated based on formula (10),

[0081]

[0082] In formula (10), q(S k ) is the set S k The number of numbers included,

[0083] Complete the set S in sequence 1 To Set S m The benefits obtained by distributing the internal independent electric energy storage units corresponding to the numbers in the figure are calculated to realize the distribution of the total benefits of the electric energy storage aggregation virtual power plant participating in the power system frequency regulation among the internal independent electric energy storage units.

[0084] Specifically in the example of the present invention, based on formula (10), the total revenue of the energy storage aggregation virtual power plant participating in the power system frequency regulation is determined among the internal independent energy storage units, and the percentage of the revenue allocated to each energy storage unit is shown in Table 3.

[0085] Table 3 Percentage of revenue allocated to each energy storage unit in an energy storage aggregation virtual power plant

[0086] Energy storage unit number i Percentage of Profits Allocated 1 16.45％ 2 21.71％ 3 28.94％ 4 32.90％

[0087] The present invention aims at the process of energy storage aggregation virtual power plant participating in system frequency regulation, and controls the independent energy storage units inside the virtual power plant to provide the system with a ramp-like active power output curve according to their own capacity and charge state during the frequency regulation process, thereby suppressing the system frequency deviation in the early stage of frequency regulation and smoothly cutting out from the system after the frequency regulation process. Based on this control strategy, a dynamic power flow solution method is adopted to quantify the contribution of each internal independent energy storage unit to suppressing the maximum frequency deviation of the power system during the frequency regulation process, and on this basis, the overall benefits of the energy storage aggregation virtual power plant participating in system frequency regulation are reasonably distributed among the internal independent energy storage units.

[0088] The specific implementation scheme described above further describes in detail the purpose, technical scheme and beneficial effects of the present invention. It should be understood that the above is only a specific implementation scheme of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the present invention should fall within the scope of protection of the present invention.

Claims

1. A method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant, characterized in that: The following steps are involved: S1: The grid dispatcher issues active power output and duration requirements for participating in power system frequency regulation to the energy storage aggregation virtual power plant based on the active power shortage of the power system; S2: During the process of participating in the frequency regulation of the power system, the active power output of the independent energy storage units inside the energy storage aggregation virtual power plant is in the form of a ramp curve that decreases to zero at a fixed slope. Based on the operating conditions of the independent energy storage units inside, the ability of the energy storage aggregation virtual power plant to provide active power output for participating in the frequency regulation of the power system according to the issued indicators is verified, and the distribution plan of the active power output of the energy storage aggregation virtual power plant among the independent energy storage units inside is determined; S3: After the power system frequency regulation process is completed, based on the maximum frequency offset reduction of the power system achieved by the internal independent energy storage units participating in the power system frequency regulation, the total revenue of the energy storage aggregation virtual power plant participating in the power system frequency regulation is distributed among the internal independent energy storage units.

2. The method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant according to claim 1, characterized in that: S2 includes the following steps: During the process of participating in the power system frequency regulation, the grid dispatcher issues an active power output of P to the energy storage aggregation virtual power plant according to the active power shortage of the power system. inc , and distribute it among the independent energy storage units within the energy storage aggregation virtual power plant. Assuming that there are n independent energy storage units within the energy storage aggregation virtual power plant, the active power output allocated to the i-th independent energy storage unit is According to formula (1), In formula (1) is the charge state of the ith independent energy storage unit at the initial moment of power system frequency regulation, is the upper limit constraint of the charge state of the ith independent energy storage unit, is the capacity of the i-th independent energy storage unit, is the discharge efficiency of the i-th independent energy storage unit; The grid dispatcher issues a time requirement of T to the energy storage aggregation virtual power plant to participate in the power system frequency regulation based on the active power shortage of the power system. The upper limit constraint of the active power average value of the i-th independent energy storage unit in the energy storage aggregation virtual power plant is According to formula (2), like The energy storage aggregation virtual power plant can provide active power output for participating in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the process of participating in the power system frequency regulation is i (t) is a ramp curve that decreases to zero at a fixed slope, and its expression is shown in formula (3). In formula (3), t is time; like The energy storage aggregation virtual power plant cannot provide active power output to participate in the power system frequency regulation according to the issued indicators. The output active power P of the i-th independent energy storage unit in the energy storage aggregation virtual power plant during the power system frequency regulation process is i (t) is a ramp curve that decreases to zero at a fixed slope, and its expression is shown in formula (4). The energy storage aggregation virtual power plant reports to the grid dispatcher the actual active power output that can be provided for participating in the power system frequency regulation. Its calculation expression is shown in formula (5):

3. The method for allocating frequency regulation revenue of an electric energy storage aggregation virtual power plant according to claim 2, characterized in that: S3 includes the following steps: after the power system frequency regulation process is completed, the maximum frequency deviation of the power system is evaluated based on the power system dynamic power flow, and the dynamic power flow solution step is set to Δt, where Δt is divided by the time requirement T for the electric energy storage aggregation virtual power plant to participate in the power system frequency regulation, and there is The power system frequency is 50Hz at the initial moment of the frequency modulation process. In the jth solution step, the power system frequency at the end of the jth solution step is The power system frequency at the initial time of the step can be solved by the jth segment: Calculated by formula (6): In formula (6), K sys Total unit regulation power of the power system, H sys is the total inertia time constant of the power system, f N The rated frequency of the power system is 50Hz. After completing the frequency calculation of the power system frequency regulation process, the maximum frequency deviation (Δf) of the power system is obtained based on formula (7): max , Sort the independent energy storage units in the energy storage aggregation virtual power plant in descending order according to their average active power values ​​in the process of participating in the power system frequency regulation, and put the numbers of the internal independent energy storage units into the set S1, S2, ..., S m m≤n, the internal independent energy storage units with the same average active power value are numbered and placed in the same collection. Starting from collection S1, it is assumed that the internal independent energy storage units corresponding to the numbers in collection S1 do not participate in the power system frequency regulation process. The frequency of the power system frequency regulation process is recalculated based on formula (8) to obtain the maximum frequency deviation of the power system under this condition (Δf(S1)): max , Then, assuming that the internal independent energy storage units corresponding to the numbers in sets S1 and S2 do not participate in the power system frequency regulation process, the frequency of the power system frequency regulation process is recalculated based on formula (9), and the maximum frequency deviation of the power system under this condition (Δf(S1, S2)) is obtained: max , Continue this process until the set S1 to S is calculated. m Under the condition that the internal independent energy storage units corresponding to the numbers do not participate in the power system frequency regulation process, the maximum frequency deviation (Δf(S1, S2, ..., S m )) max ; The total revenue of the energy storage aggregated virtual power plant participating in the power system frequency regulation is R sum , for the set S k , where 1≤k≤m, for the internal independent energy storage unit corresponding to the number, the allocated income R(S k ) is calculated based on formula (10), In formula (10), q(S k ) is the set S k The number of numbers included, Complete sets S1 to S in sequence m The benefits obtained by distributing the internal independent electric energy storage units corresponding to the numbers in the figure are calculated to realize the distribution of the total benefits of the electric energy storage aggregation virtual power plant participating in the power system frequency regulation among the internal independent electric energy storage units.

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