Independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method and related equipment

Abstract

The invention belongs to the field of independent energy storage auxiliary service cost allocation, and discloses an independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method and related equipment, and the method comprises the steps: firstly obtaining a power generation side output value and a demand side load value of an independent energy storage power station in a to-be-evaluated region; inputting the power generation side output value and the demand side load value into a pre-constructed climbing auxiliary service cost dynamic Shapley value allocation model, and outputting a climbing auxiliary service cost allocation amount and a cost allocation proportion corresponding to the power generation side and the demand side; according to the method, the apportionment of the power generation side and the demand side participating in the climbing auxiliary service is divided into two stages, the situation that the two sides participate together is considered, and the situation that one side quits is also considered, so that the actual contribution of each constituent part in the climbing auxiliary service can be reflected more accurately, and the user experience is improved. And a clear reference direction is provided for formulating an energy storage climbing auxiliary service cost allocation mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of independent energy storage auxiliary service cost allocation, and in particular relates to an independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method and related equipment. Background Art

[0002] At present, the regulated power supply has been greatly reduced, and the construction of new power systems has been accelerated, which has prompted independent energy storage to enter the fast lane of development. As the backbone of providing auxiliary services in the future, independent energy storage also needs to make continuous breakthroughs in price theories and mechanisms that are compatible with it. At present, in the southern region and central China represented by a certain city, the cost of auxiliary services is shared by the grid-connected entities on the power generation side and market-oriented power users; in the current trial stage, each province and region has tentatively set the sharing ratio at 0.5; however, whether the cost sharing is reasonable needs to be discussed. Whether the ratio of 0.5 can maximize efficiency and maximize the interests of both parties is an issue that needs to be considered urgently.

[0003] The ramping auxiliary service was first proposed by California. The increase in the proportion of renewable energy in California has made the system's ability to change net load more and more significant. The photovoltaic power generation capacity weakened from 5 pm to 8 pm, forming a "duck curve". In order to solve this problem, the California Independent System Operator proposed a new auxiliary service, namely flexible ramping service, which can alleviate the problem of insufficient system ramping capacity within 5-15 minutes by dispatching controllable flexibility resources. In response to the "Electricity Ancillary Service Management Measures", new auxiliary services such as ramping were proposed; among them, there are many studies on the cost calculation of thermal power ramping auxiliary services. The cost calculation of thermal power ramping services is mostly calculated by linear relationship. For example, An Lei et al. (2018) measured the ramping cost of thermal power units with a linear function of the ramping rate when calculating the ramping cost of thermal power units, and believed that the cost function of thermal power units has a linear relationship with the size of the ramping rate between two adjacent moments. K. Kathiravan et al. (2019) calculated the ramping of thermal power units in sections, considered the ramping costs of step-by-step and segmented ramping rates, and obtained the optimal operating cost of the unit. Jiahua Hu et al. (2018) proposed an optimization model for a BES aggregator to optimize the provision of flexible ramping services in the day-ahead energy and reserve markets, aiming to maximize its benefits. Song Xiaozhe et al. (2020) analyzed that the flexible ramping cost is divided into two parts, one part is related to the day-ahead market quotation, and the other part is corrected according to the actual situation. However, there are very few studies on the calculation of the cost of ramping auxiliary services for independent energy storage; and because in the actual cost sharing problem of independent energy storage, there are wind power and photovoltaic power participating in the sharing on the power generation side, and users participating in the sharing on the demand side, and the participation situation is relatively complex. The existing cost sharing method of ramping auxiliary services cannot effectively and accurately obtain the sharing amount and sharing ratio of each component, which leads to a lack of reference direction for formulating the cost sharing mechanism of energy storage ramping auxiliary services.

[0004] It can be seen from this that with regard to the actual cost sharing problem of independent energy storage, the existing cost sharing method for ramping auxiliary services cannot effectively and accurately obtain the sharing amount and sharing ratio of each component, which in turn leads to a lack of reference direction for formulating the cost sharing mechanism for energy storage ramping auxiliary services. Summary of the invention

[0005] The purpose of the present invention is to provide an independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method and related equipment to solve the problem of actual cost allocation for independent energy storage. The existing climbing auxiliary service cost allocation method cannot effectively and accurately know the allocation amount and allocation ratio of each component, which leads to the technical problem of lack of reference direction for formulating the energy storage climbing auxiliary service cost allocation mechanism.

[0006] In order to achieve the above object, the present invention adopts the following technical solution: A cost allocation method for independent energy storage dynamic Shapley value ramping auxiliary service, comprising: Obtain the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; Input the power generation side output value and the demand side load value into the pre-built dynamic Shapley value allocation model of the ramp auxiliary service cost, and output the corresponding ramp auxiliary service cost allocation amount and cost allocation ratio of the power generation side and the demand side; Among them, the dynamic Shapley value allocation model of the ramping auxiliary service cost divides the allocation of the generation side and the demand side participating in the ramping auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramping auxiliary service; in the second stage, the generation side or the demand side withdraws from the allocation of the ramping auxiliary service.

[0007] Furthermore, the dynamic Shapley value allocation model of the climbing auxiliary service cost is constructed based on the climbing auxiliary service cost calculation model; the climbing auxiliary service cost calculation model is constructed based on the full life cycle cost of the independent energy storage power station, and the full life cycle cost includes fixed cost and operating cost.

[0008] Further, wherein the fixed costs include initial investment costs and maintenance costs; The fixed cost is obtained based on the power cost and the capacity cost, and the specific formula is as follows:

[0009] In the formula, is the investment cost per unit rated power of energy storage; is the investment cost per unit capacity of energy storage; is the rated power; is the rated capacity; The repair cost is based on the annual maintenance cost and rated power, and the specific formula is as follows:

[0010] In the formula, For maintenance costs; is the annual maintenance cost; The fixed cost of storing energy for one hour is:

[0011] In the formula, is the discount rate for independent energy storage power stations; The service life of an independent energy storage power station.

[0012] Furthermore, the discharge rate when the independent energy storage power station provides climbing assistance service is equal to the climbing rate when the independent energy storage power station provides climbing assistance service. The actual service life of the independent energy storage power station is linearly related to the discharge rate and the climbing rate, and is negatively correlated. The specific relationship is as follows:

[0013] In the formula, The actual service life of an independent energy storage power station. The coefficient of influence of the ramp rate of the independent energy storage power station on its service life; The service life of an independent energy storage power station.

[0014] Further, among them, The specific formula of the first stage of the dynamic Shapley value allocation model of the hill climbing auxiliary service cost is as follows:

[0015]

[0016] In the formula, For the demand side All collections participated in; is the number of all demand sides in the alliance; for Alliances The number of demand sides; For the Alliance The resulting hill climbing assistance service cost value; For the Alliance Excluding the demand side The climbing auxiliary service cost value caused by the For the demand side, the alliances involved The marginal climbing auxiliary service cost contribution; Weighting factor for the marginal ramping ancillary service cost contribution for evenly distributing ancillary service costs; The second stage of the dynamic Shapley value allocation model of the hill climbing assistance service cost is constructed based on the hill climbing assistance service cost calculation model; If the power generation side chooses not to exit the alliance, the cost sharing on the demand side is consistent with the calculation method in the first stage; If the photovoltaic power station on the power generation side chooses to withdraw from the alliance, the specific formula for the photovoltaic power station's climbing auxiliary service cost sharing is as follows:

[0017] In the formula, Cost share of the ramp-up auxiliary service of the photovoltaic power station; is the discount rate for independent energy storage power stations; For users The load value at the moment; For users The load value at the moment; Photovoltaic Output value at the moment; Photovoltaic Output value at the moment; For wind power Output value at the moment; For wind power Output value at the moment.

[0018] Furthermore, the power generation side includes photovoltaic power stations and / or wind power; the demand side includes power plants and / or users.

[0019] Furthermore, the power generation side output value is obtained based on the user load curve; the demand side load value is obtained based on the wind power and photovoltaic output ratio curves and the corresponding installed capacities of wind power and photovoltaic.

[0020] An independent energy storage dynamic Shapley value ramping auxiliary service cost sharing system, comprising: A data acquisition module is used to obtain the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; The cost allocation calculation module is used to input the power output value of the power generation side and the load value of the demand side into the pre-built dynamic Shapley value allocation model of the ramp-up auxiliary service cost, and output the corresponding ramp-up auxiliary service cost allocation amount and cost allocation ratio of the power generation side and the demand side; Among them, the dynamic Shapley value allocation model of the ramping auxiliary service cost divides the allocation of the generation side and the demand side participating in the ramping auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramping auxiliary service; in the second stage, the generation side or the demand side withdraws from the allocation of the ramping auxiliary service.

[0021] A device comprising: Memory for storing computer programs; A processor is used to implement the steps of the above-mentioned independent energy storage dynamic Shapley value climbing auxiliary service cost sharing method when executing the computer program.

[0022] A computer-readable storage medium stores a computer program, which, when executed by a processor, is used to implement the steps of the independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method. The method first obtains the power generation side output value and the demand side load value of the independent energy storage power station in the area to be evaluated, and then inputs the power generation side output value and the demand side load value into a pre-built dynamic Shapley value allocation model for climbing auxiliary service cost, and outputs the climbing auxiliary service cost allocation amount and the cost allocation ratio corresponding to the power generation side and the demand side; the method divides the allocation of the power generation side and the demand side to the climbing auxiliary service into two stages, taking into account both the joint participation of both parties and the withdrawal of one party, so as to more accurately reflect the actual contribution of each component in the climbing auxiliary service, and provide a clear reference direction for formulating the energy storage climbing auxiliary service cost allocation mechanism; the method improves the fairness and accuracy of cost allocation, helps to encourage the power generation side and the demand side to participate more actively in the climbing auxiliary service, thereby enhancing the stability and reliability of the power system.

[0024] Preferably, in the present invention, the dynamic Shapley value allocation model for the ramp auxiliary service cost is constructed based on the ramp auxiliary service cost calculation model, and this cost calculation model is based on the full life cycle cost (including fixed costs and operating costs) of the independent energy storage power station; this construction method makes the cost allocation more scientific and reasonable, can fully reflect the economic efficiency of the independent energy storage power station, and provide a solid foundation for cost allocation.

[0025] Preferably, in the present invention, the calculation method of fixed costs includes specific calculation formulas for initial investment costs and maintenance costs; this makes cost calculations more precise, helps to more accurately evaluate the economic feasibility of independent energy storage power stations, and provides more accurate data support for cost sharing.

[0026] Preferably, in the present invention, the relationship between the discharge rate and the actual service life of the independent energy storage power station when providing climbing assistance service is provided, which provides an important basis for evaluating the life and performance of the independent energy storage power station; this helps to more comprehensively consider the economic feasibility of the independent energy storage power station in cost sharing, and ensure the fairness and rationality of the sharing results.

[0027] Preferably, in the present invention, the dynamic Shapley value allocation model of the ramp auxiliary service cost is divided into two stages. The model can dynamically reflect the contribution and cost of the power generation side and the demand side in the ramp auxiliary service, and provides a scientific method for cost allocation; by accurately calculating the marginal ramp auxiliary service cost contribution and weighting factor, the fairness and accuracy of cost allocation are ensured.

[0028] Preferably, in the present invention, the power generation side includes photovoltaic power stations and wind power; the demand side includes power plants and users, which helps to more accurately identify the responsibilities and contributions of each party in cost sharing and ensure the rationality and acceptability of the sharing results.

[0029] Preferably, in the present invention, the method for obtaining the output value of the power generation side and the load value of the demand side is based on the user load curve and the wind power and photovoltaic output ratio curves and the corresponding installed capacity; this acquisition method can more accurately reflect the actual situation of the power generation side and the demand side, and provide more accurate data support for cost sharing; at the same time, it also helps to improve the transparency and operability of cost sharing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A user load curve diagram provided by an embodiment of the present invention; Figure 2 A new energy output diagram provided for an embodiment of the present invention; Figure 3 A flow chart of a cost allocation method for an independent energy storage dynamic Shapley value ramp-up auxiliary service provided by the present invention; Figure 4 A structural schematic diagram of an independent energy storage dynamic Shapley value climbing auxiliary service cost sharing system provided by the present invention. DETAILED DESCRIPTION

[0031] Example 1 As described in the background technology, there are very few studies on the cost calculation of independent energy storage ramping auxiliary services. In addition, in the actual cost sharing problem of independent energy storage, there are wind power and photovoltaic power participating in the sharing on the power generation side, and users participating in the sharing on the demand side. The participation situation is also relatively complicated. The existing ramping auxiliary service cost sharing method cannot effectively and accurately obtain the sharing amount and sharing ratio of each component, which leads to a lack of reference direction for formulating the energy storage ramping auxiliary service cost sharing mechanism.

[0032] In order to achieve the above-mentioned purpose, the present invention provides an independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method, which can effectively and accurately obtain the allocation amount and allocation ratio of each component.

[0033] The principle is that the dynamic Shapley value rule is a game tree introduced on the original Shapley value method, which divides a game into several stages and apportions the benefits or costs according to the game in each stage. The dynamic Shapley value method in this embodiment divides the apportionment of new energy and user participation in the ramp-up auxiliary service into two stages. In the first stage, both new energy and users participate in the apportionment of the ramp-up auxiliary service, and in the second stage, it is considered that the photovoltaic power station may withdraw from the ramp-up auxiliary service apportionment, and IDPβ is introduced to calculate the dynamic Shapley value.

[0034] This embodiment provides a cost allocation method for independent energy storage dynamic Shapley value ramping auxiliary service, including: The first step is to build a cost calculation model for hill climbing assistance services: When an independent energy storage power station provides ramp assistance services, its life cycle cost structure consists of fixed costs (including investment costs and maintenance costs) and costs that affect the service life of the energy storage. The fixed cost of ramp auxiliary service refers to the initial investment cost of the independent energy storage power station to bear the cost of energy storage power station equipment for flexible ramp capacity. Mainly by rated power Determined power cost and rated capacity In this embodiment, the total rated power of the independent energy storage power station is taken as The total rated capacity is 20,000MW It is 4000 MW·h. The calculation method is: (1) in, is the investment cost per unit power of energy storage (10,000 yuan / MW). 1.3 million yuan / MW; is the investment cost per unit capacity of energy storage (10,000 yuan / MW·h). It is 3 million yuan / MW·h.

[0035] Energy storage power stations need to perform necessary operation and maintenance when providing ramp assistance services, thus incurring maintenance costs , its cost Main and rated power related. The calculation method is: (2) in, is the annual maintenance cost (10,000 yuan / MW), in this embodiment, It is 60,000 yuan / MW.

[0036] In this embodiment, the cost of providing hill climbing assistance services for one day needs to be calculated, and the fixed cost of storing energy for one hour is Then: (3) in, is the discount rate of the independent energy storage power station. 2%; is the service life of the independent energy storage power station (years). For 50 years.

[0037] When an independent energy storage unit (i.e., an independent energy storage power station) provides ramp-up assistance services, the unit will discharge quickly, and a larger discharge rate will result in a reduction in the actual available capacity of the independent energy storage unit.

[32] , thus reducing its service life. According to experiments, the relationship between actual capacity and battery discharge rate is approximately linear and negatively correlated. Therefore, the actual service life of the unit is It is also linearly related to the discharge rate, and the discharge rate is exactly the ramp rate when the independent energy storage unit provides ramp assist service, and thus the actual service life of the unit. It is also linearly related to the climbing rate and negatively correlated. The specific relationship is as follows: (4) in, The coefficient of influence of the ramp rate of the independent energy storage power station on its service life; is the service life of the energy storage system (year); At this point, the cost calculation model for hill climbing assistance service has been completed.

[0038] The second step is to build a dynamic Shapley value allocation model for the hill climbing auxiliary service cost: To simplify the analysis, we consider the new energy in the power system to be clustered, namely wind power and photovoltaic power. The dynamic Shapley value method divides the sharing of new energy and users' participation in ancillary services into two stages. In the first stage, both new energy and users participate in the sharing of ancillary services, while in the second stage, new energy and users are considered to withdraw from the sharing of ancillary services.

[0039] In the first stage, new energy and users choose to participate in the alliance at the same time, and the Shapley value method of this stage is:

[0040] (5) in, for All collections participated in; is the number of all power plants or users in the alliance, which is 3 in this paper; for Alliances The number of power plants or users; For the Alliance The resulting hill climbing assistance service cost value; For the Alliance Remove power plants or users The climbing auxiliary service cost value caused by the slope adjustment. For power plants or users For participating alliances The marginal climbing auxiliary service cost contribution; Weighting factor for evenly distributing the marginal ramping ancillary service cost contribution.

[0041] In the second stage, new energy and users can choose to withdraw or not. In this scenario, this paper assumes that only photovoltaic power stations in new energy will choose to withdraw or not withdraw from the alliance, and the withdrawal probability is , and use this to perform dynamic Shapley value calculations.

[0042] If the PV power station chooses not to exit, the power plant or the user The allocation of ancillary service costs based on the dynamic Shapley value method is the same as the allocation of ancillary service costs based on the static Shapley value method. The ancillary service cost allocation based on the dynamic Shapley value method is as follows: (6) Therefore, the cost of the ramp-assisted service is allocated by combining the photovoltaic dynamic Shapley value method with the ramp-assisted service cost calculation model obtained in the first step. for: (7) In the formula, Cost share of the ramp-up auxiliary service of the photovoltaic power station; is the discount rate for independent energy storage power stations; For users The load value at the moment; For users The load value at the moment; Photovoltaic Output value at the moment; Photovoltaic Output value at the moment; For wind power Output value at the moment; For wind power Output value at the moment.

[0043] Similarly, the dynamic Shapley value method for allocating the cost of ramp auxiliary services between wind power and users (power plants) can be obtained.

[0044] At this point, the dynamic Shapley value allocation model for hill climbing assistance service costs has been completed.

[0045] The third step is to collect the power generation output and demand load values ​​of the independent energy storage power stations in the area to be evaluated; In this embodiment, the power generation side output value is obtained based on the user load curve; the demand side load value is obtained based on the wind power and photovoltaic output ratio curves and the corresponding installed capacities of wind power and photovoltaic.

[0046] In the fourth step, the power generation side output value and the demand side load value are input into the pre-built dynamic Shapley value allocation model of the ramping auxiliary service cost, and the corresponding ramping auxiliary service cost allocation amount and cost allocation ratio of the power generation side and the demand side are output.

[0047] According to the corresponding ramp auxiliary service cost allocation amount and cost allocation ratio on the power generation side and demand side of the output, the conclusions are as follows: (1) When wind power and photovoltaic power are outputting upward, they can obtain the benefits of upward climbing auxiliary services, while when wind power and photovoltaic power are outputting downward, they need to bear the cost sharing of independent energy storage to provide climbing auxiliary services. When the user load is upward, the proportion of its climbing auxiliary service sharing increases, while when the user load is downward, the proportion of its climbing auxiliary service sharing decreases.

[0048] (2) When the downward output of wind power and photovoltaic power fluctuates greatly, their apportionment ratio will increase greatly; when the upward output of wind power and photovoltaic power fluctuates greatly, their benefits will increase. Therefore, the greater the fluctuation of the downward output, the greater the demand for the climbing auxiliary service in the system, and the greater the fluctuation of the upward output, the more effective the climbing auxiliary service can be for the system.

[0049] (3) The amount of auxiliary service cost that users need to bear and the proportion of the cost of auxiliary service that they need to bear are much greater than those of wind power and photovoltaic power, because users, as the main beneficiaries of the auxiliary service, should bear more of the auxiliary service cost. Due to the large fluctuation of photovoltaic power and the small fluctuation of wind power, the amount of auxiliary service cost that photovoltaic power needs to bear and the proportion of the cost of auxiliary service that they need to bear are greater than those of wind power.

[0050] According to the above research results, the independent energy storage ramp auxiliary service allocation mechanism can be changed in the following aspects: (1) Determine the cost allocation ratio of ramp auxiliary services based on the fluctuation of the power plant output curve Due to the strong volatility of wind power and photovoltaic power, when the fluctuations of wind power and photovoltaic power are large, there will be a greater demand for the system's climbing auxiliary services, and more climbing auxiliary service costs will need to be borne. Therefore, the allocation ratio of the climbing auxiliary service costs should not be related to the power generation of wind power and photovoltaic power, but should be related to its volatility. The stronger the volatility, the more climbing auxiliary service costs the power plant will bear, and the smaller the volatility, the less climbing auxiliary service costs the power plant will bear.

[0051] (2) Gradually increase the proportion of users’ cost sharing for hill climbing assistance services According to the general principle of "whoever serves, whoever profits, whoever benefits, whoever bears the cost", the power supply of power plants is mainly used by users, and its main service is to users. Therefore, users, as electricity users, are the biggest beneficiaries of the climbing auxiliary service and should bear more of the climbing auxiliary service costs. Therefore, it is necessary to improve the existing climbing auxiliary service sharing ratio. Instead of 0.5 for each user and power plant, the user's sharing ratio of the climbing auxiliary service cost should be gradually increased, and the climbing auxiliary service cost should be gradually transferred to the user side, while the power plant provides a small part.

[0052] (3) Reasonably consider the dynamic changes of system participants to determine the cost sharing ratio of hill climbing assistance services Since the participants in the system may change, the changes in the participation of power plants in the system should be considered when determining the cost-sharing ratio of ramping auxiliary services. When a participant withdraws, its cost-sharing ratio of ramping auxiliary services should be appropriately reduced, while the user's cost-sharing ratio of auxiliary services should be increased. Therefore, it is necessary to improve the intraday ancillary service market mechanism and form a dynamic cost-sharing ratio of ramping auxiliary services.

[0053] This embodiment takes the data of a certain province in Northwest China as an example, and adopts this method to obtain the apportionment amount and apportionment ratio of the cost of wind power, photovoltaic power and the user's climbing auxiliary service. The specific implementation method is as follows: (1) Obtaining the data to be input like Figure 1 As shown, in order to calculate the cost sharing of the auxiliary services of independent energy storage in a certain area on the demand side and the power generation side, this embodiment takes the data of a northwestern province in 2022 as an example, with a wind power installed capacity of 11.64 million kilowatts and a photovoltaic installed capacity of 15.16 million kilowatts. The typical load curves of each provincial working day announced by the National Development and Reform Commission are used as the user load curves studied in this embodiment.

[0054] The 24-hour output ratio curve of wind power and photovoltaic power is the wind power and photovoltaic output ratio curve studied in this embodiment, and multiplied by the corresponding installed capacity to obtain the 24-hour output curve of wind power and photovoltaic power, such as Figure 2 As shown, the penetration rates of wind power and photovoltaic power are 38.60% and 16.90% respectively.

[0055] (2) Input the data into the dynamic Shapley value allocation model of ramp-up auxiliary service cost. Based on the above formulas (1) to (7), by substituting the load value and the wind power and photovoltaic output values, the dynamic Shapley value method ramp-up auxiliary service cost allocation amount and cost allocation ratio of wind power, photovoltaic and users for 24 hours can be obtained. The specific results are shown in Table 1: Table 1 shows the 24-hour allocation and allocation ratio of the climbing assistance service cost using the dynamic Shapley value method

[0056] It can be seen from the above table that when wind power and photovoltaic power are outputting upward, their share of the climbing auxiliary service is negative, and they can obtain the benefits of the upward climbing auxiliary service. When wind power and photovoltaic power are outputting downward, their share of the climbing auxiliary service is positive, and they need to participate in the cost sharing of independent energy storage to provide climbing auxiliary services. When the user load is upward, the proportion of its climbing auxiliary service share increases, and when the user is downward, the proportion of its climbing auxiliary service share decreases. When the downward output of wind power and photovoltaic power changes greatly, its share ratio will increase significantly; when the upward output of wind power and photovoltaic power changes greatly, its benefits will increase.

[0057] The 24-hour ramp auxiliary service cost allocation is summarized in Table 1, and finally the total dynamic Shapley value method ramp auxiliary service cost allocation and cost allocation ratio of wind power, photovoltaic power and users in one day can be obtained, as shown in Table 2: Table 2 shows the allocation amount and allocation ratio of auxiliary service costs using the dynamic Shapley value method

[0058] As can be seen from the above table, the apportionment amount of the climbing auxiliary service cost varies greatly. The apportionment amount of the climbing auxiliary service cost that users need to bear is much greater than the apportionment amount of the auxiliary service cost that wind power and photovoltaic power need to bear, while the apportionment amount of the auxiliary service cost that photovoltaic power needs to bear is greater than the apportionment amount of the climbing auxiliary service cost that wind power needs to bear. As for the apportionment ratio of the auxiliary service cost, the proportion of the climbing auxiliary service cost borne by users is the largest, which is 83.73%; the proportion of the climbing auxiliary service cost borne by wind power is the smallest, which is 6.06%; and the proportion of the climbing auxiliary service cost borne by photovoltaic power is 10.21%. Therefore, it can be seen that the proportion of the climbing auxiliary service cost borne by the power generation side is about 20%, while the proportion of the climbing auxiliary service cost borne by the user side is about 80%.

[0059] Example 2 like Figure 3 As shown, this embodiment provides a method for allocating costs of independent energy storage dynamic Shapley value ramping auxiliary services, including the following steps: S1: Obtain the power generation output value and demand load value of the independent energy storage power station in the area to be evaluated; S2: Input the power output value on the generation side and the load value on the demand side into the pre-built dynamic Shapley value allocation model for the ramping auxiliary service cost, and output the corresponding ramping auxiliary service cost allocation amount and cost allocation ratio on the generation side and the demand side; The dynamic Shapley value allocation model for ramp-up auxiliary service cost divides the allocation of the generation side and the demand side to the ramp-up auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramp-up auxiliary service; in the second stage, the generation side or the demand side withdraws from the allocation of the ramp-up auxiliary service; The above-mentioned dynamic Shapley value allocation model for the climbing auxiliary service cost is constructed based on the climbing auxiliary service cost calculation model; the climbing auxiliary service cost calculation model is constructed based on the full life cycle cost of the independent energy storage power station, and the full life cycle cost includes fixed cost and operating cost.

[0060] Wherein, the fixed costs include initial investment costs and maintenance costs; The fixed cost is obtained based on the power cost and the capacity cost, and the specific formula is as follows:

[0061] In the formula, is the investment cost per unit rated power of energy storage; is the investment cost per unit capacity of energy storage; is the rated power; is the rated capacity; The repair cost is based on the annual maintenance cost and rated power, and the specific formula is as follows:

[0062] In the formula, For maintenance costs; Annual maintenance cost.

[0063] Among them, the discharge rate when the independent energy storage power station provides climbing auxiliary service is equal to the climbing rate when the independent energy storage power station provides climbing auxiliary service. The actual service life of the independent energy storage power station is linearly related to the discharge rate and the climbing rate, and is negatively correlated. The specific relationship is as follows:

[0064] In the formula, The actual service life of an independent energy storage power station. The coefficient of influence of the ramp rate of the independent energy storage power station on its service life; The service life of an independent energy storage power station.

[0065] Specifically, The specific formula of the first stage of the dynamic Shapley value allocation model of the hill climbing auxiliary service cost is as follows:

[0066]

[0067] In the formula, For the demand side All collections participated in; is the number of all demand sides in the alliance; for Alliances The number of demand sides; For the Alliance The resulting hill climbing assistance service cost value; For the Alliance Excluding the demand side The climbing auxiliary service cost value caused by the For the demand side, the alliances involved The marginal climbing auxiliary service cost contribution; Weighting factor for the marginal ramping ancillary service cost contribution for evenly distributing ancillary service costs; The second stage of the dynamic Shapley value allocation model of the hill climbing assistance service cost is constructed based on the hill climbing assistance service cost calculation model; If the power generation side chooses not to exit the alliance, the cost sharing on the demand side is consistent with the calculation method in the first stage; If the photovoltaic power station on the power generation side chooses to withdraw from the alliance, the specific formula for the photovoltaic power station's climbing auxiliary service cost sharing is as follows:

[0068] In the formula, Cost share of the ramp-up auxiliary service of the photovoltaic power station; is the discount rate for independent energy storage power stations; For users The load value at the moment; For users The load value at the moment; Photovoltaic Output value at the moment; Photovoltaic Output value at the moment; For wind power Output value at the moment; For wind power Output value at the moment.

[0069] The above-mentioned power generation side includes photovoltaic power stations and / or wind power; the above-mentioned demand side includes power plants and / or users.

[0070] Here, the power generation side output value is obtained based on the user load curve; the demand side load value is obtained based on the wind power and photovoltaic output ratio curves and the corresponding installed capacities of wind power and photovoltaic.

[0071] like Figure 4 As shown, this embodiment also provides an independent energy storage dynamic Shapley value climbing auxiliary service cost sharing system, including: a data acquisition module, used to obtain the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; a cost sharing calculation module, used to input the power generation side output value and the demand side load value into a pre-built climbing auxiliary service cost dynamic Shapley value sharing model, and output the climbing auxiliary service cost sharing amount and cost sharing ratio corresponding to the power generation side and the demand side. Among them, the climbing auxiliary service cost dynamic Shapley value sharing model divides the sharing of the power generation side and the demand side participating in the climbing auxiliary service into two stages: in the first stage, both the power generation side and the demand side participate in the sharing of the climbing auxiliary service; in the second stage, the power generation side or the demand side withdraws from the sharing of the climbing auxiliary service.

[0072] The present invention also provides a device, comprising: a memory for storing a computer program; and a processor for implementing the steps of the independent energy storage dynamic Shapley value ramp-up auxiliary service cost sharing method when executing the computer program.

[0073] When the processor executes the computer program, the above-mentioned independent energy storage dynamic Shapley value climbing auxiliary service cost allocation steps are implemented, for example: obtaining the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; inputting the power generation side output value and demand side load value into the pre-built climbing auxiliary service cost dynamic Shapley value allocation model, and outputting the climbing auxiliary service cost allocation amount and cost allocation ratio corresponding to the power generation side and the demand side. Among them, the climbing auxiliary service cost dynamic Shapley value allocation model divides the allocation of the power generation side and the demand side participating in the climbing auxiliary service into two stages: in the first stage, both the power generation side and the demand side participate in the allocation of the climbing auxiliary service; in the second stage, the power generation side or the demand side withdraws from the allocation of the climbing auxiliary service.

[0074] Alternatively, when the processor executes the computer program, it implements the functions of each module in the above system, for example: a data acquisition module, which is used to obtain the power generation side output value and the demand side load value of the independent energy storage power station in the area to be evaluated; a cost sharing calculation module, which is used to input the power generation side output value and the demand side load value into a pre-built dynamic Shapley value sharing model for climbing auxiliary service costs, and output the corresponding climbing auxiliary service cost sharing amount and cost sharing ratio of the power generation side and the demand side. Among them, the dynamic Shapley value sharing model for climbing auxiliary service costs divides the sharing of the power generation side and the demand side participating in the climbing auxiliary service into two stages: in the first stage, both the power generation side and the demand side participate in the sharing of the climbing auxiliary service; in the second stage, the power generation side or the demand side withdraws from the sharing of the climbing auxiliary service.

[0075] Exemplarily, the computer program can be divided into one or more modules / units, and the one or more modules / units are stored in the memory and executed by the processor to complete the present invention. The one or more modules / units can be a series of computer program instruction segments that can complete preset functions, and the instruction segments are used to describe the execution process of the computer program in the independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device. For example, the computer program can be divided into a data acquisition module and a cost sharing calculation module; the specific functions of each module are as follows: a data acquisition module, which is used to obtain the power generation side output value and the demand side load value of the independent energy storage power station in the area to be evaluated; a cost sharing calculation module, which is used to input the power generation side output value and the demand side load value into the pre-built climbing auxiliary service cost dynamic Shapley value sharing model, and output the climbing auxiliary service cost sharing amount and cost sharing ratio corresponding to the power generation side and the demand side. Among them, the dynamic Shapley value allocation model of the ramping auxiliary service cost divides the allocation of the generation side and the demand side participating in the ramping auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramping auxiliary service; in the second stage, the generation side or the demand side withdraws from the allocation of the ramping auxiliary service.

[0076] The independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device can be a computing device such as a desktop computer, a notebook, a PDA and a cloud server. The independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device may include, but is not limited to, a processor and a memory. Those skilled in the art will appreciate that the above is an example of an independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device, and does not constitute a limitation on the independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device, and may include more components than the above, or a combination of certain components, or different components. For example, the independent energy storage dynamic Shapley value climbing auxiliary service cost sharing device may also include input and output devices, network access devices, buses, etc.

[0077] The processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The processor is the control center of the independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation, and uses various interfaces and lines to connect the various parts of the entire independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation device.

[0078] The memory can be used to store the computer program and / or module, and the processor implements various functions of the independent energy storage dynamic Shapley value ramping auxiliary service cost sharing device by running or executing the computer program and / or module stored in the memory, and calling the data stored in the memory.

[0079] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0080] The present invention also provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method are implemented.

[0081] If the module / unit integrated in the independent energy storage dynamic Shapley value ramp-up auxiliary service cost sharing system is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.

[0082] Based on such understanding, the present invention implements all or part of the processes in the above-mentioned independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method, and can also be completed by instructing related hardware through a computer program, and the computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, the steps of the above-mentioned independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or preset intermediate form, etc.

[0083] The computer-readable storage medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0084] It should be noted that the content contained in the computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage media do not include electrical carrier signals and telecommunication signals.

[0085] It can be seen that the present invention provides an independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method, which has the following advantages over the existing allocation methods: First, this technical solution realizes the accurate calculation of the cost sharing of the ramping auxiliary service between the power generation side and the demand side by introducing the independent energy storage dynamic Shapley value ramping auxiliary service cost sharing method. This sharing method not only takes into account the output and load values ​​of both parties, but also takes into account the participation of both parties at different stages, thereby improving the fairness and accuracy of cost sharing. Secondly, this method constructs a ramping auxiliary service cost calculation model based on the full life cycle cost of the independent energy storage power station, and comprehensively considers the fixed costs and operating costs, including the initial investment cost, maintenance cost, etc., making the cost sharing more comprehensive and detailed. Furthermore, this method dynamically adjusts the sharing model to adapt to the changes that may occur on the power generation side and the demand side at different stages, such as withdrawal from the alliance, thereby enhancing the flexibility and adaptability of the sharing mechanism. In addition, this technical solution also takes into account the impact of the discharge rate and ramp rate of the independent energy storage power station on its service life, further improving the scientificity and rationality of cost sharing; finally, this technical solution has a wide range of applications, the power generation side can include renewable energy such as photovoltaic power stations and wind power, the demand side can include power plants, users, etc., and the methods for obtaining the output value of the power generation side and the load value of the demand side are also flexible and diverse, with strong practicality and promotion value. In summary, this method provides a new solution for the cost sharing of independent energy storage power stations participating in ramp auxiliary services, which is of great significance for promoting the stable operation and sustainable development of the power system.

[0086] The above embodiment is only one of the implementation methods that can realize the technical solution of the present invention. The scope of protection claimed by the present invention is not limited only to this embodiment, but also includes changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention.

Claims

1. A cost allocation method for independent energy storage dynamic Shapley value ramp-up auxiliary service, characterized in that: include: Obtain the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; Input the power generation side output value and the demand side load value into the pre-built dynamic Shapley value allocation model of the ramp auxiliary service cost, and output the corresponding ramp auxiliary service cost allocation amount and cost allocation ratio of the power generation side and the demand side; The dynamic Shapley value allocation model of ramp-up auxiliary service cost divides the allocation of the generation side and the demand side to the ramp-up auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramp-up auxiliary service; In the second stage, the power generation side or the demand side withdraws from the sharing of the ramp auxiliary service.

2. The independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method according to claim 1 is characterized in that: The dynamic Shapley value allocation model for the climbing auxiliary service cost is constructed based on the climbing auxiliary service cost calculation model; the climbing auxiliary service cost calculation model is constructed based on the full life cycle cost of an independent energy storage power station, and the full life cycle cost includes fixed costs and operating costs.

3. The independent energy storage dynamic Shapley value climbing auxiliary service cost allocation method according to claim 2 is characterized in that: in, The fixed costs include initial investment costs and maintenance costs; The fixed cost is obtained based on the power cost and the capacity cost, and the specific formula is as follows: In the formula, is the investment cost per unit rated power of energy storage; is the investment cost per unit capacity of energy storage; is the rated power; is the rated capacity; The repair cost is based on the annual maintenance cost and rated power, and the specific formula is as follows: In the formula, For maintenance costs; is the annual maintenance cost; The fixed cost of storing energy for one hour is: In the formula, is the discount rate for independent energy storage power stations; The service life of an independent energy storage power station.

4. The independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method according to claim 2 is characterized in that: in, The discharge rate when the independent energy storage power station provides climbing assistance service is equal to the climbing rate when the independent energy storage power station provides climbing assistance service. The actual service life of the independent energy storage power station is linearly related to the discharge rate and the climbing rate, and is negatively correlated. The specific relationship is as follows: In the formula, The actual service life of an independent energy storage power station. The coefficient of influence of the ramp rate of the independent energy storage power station on its service life; The service life of an independent energy storage power station.

5. The independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method according to claim 2 is characterized in that: in, The specific formula of the first stage of the dynamic Shapley value allocation model of the hill climbing auxiliary service cost is as follows: In the formula, For the demand side All collections participated in; is the number of all demand sides in the alliance; for Alliances The number of demand sides; For the Alliance The resulting hill climbing assistance service cost value; For the Alliance Excluding the demand side The climbing auxiliary service cost value caused by the For the demand side, the alliances involved The marginal climbing auxiliary service cost contribution; Weighting factor for the marginal ramping ancillary service cost contribution for evenly distributing ancillary service costs; The second stage of the dynamic Shapley value allocation model of the hill climbing assistance service cost is constructed based on the hill climbing assistance service cost calculation model; If the power generation side chooses not to exit the alliance, the cost sharing on the demand side is consistent with the calculation method in the first stage; If the photovoltaic power station on the power generation side chooses to withdraw from the alliance, the specific formula for the cost sharing of the photovoltaic power station's ramp auxiliary service is as follows: In the formula, Cost share of the ramp-up auxiliary service of the photovoltaic power station; is the discount rate for independent energy storage power stations; For users The load value at the moment; For users The load value at the moment; Photovoltaic Output value at the moment; Photovoltaic Output value at the moment; For wind power Output value at the moment; For wind power Output value at the moment.

6. The independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method according to claim 1 is characterized in that: The power generation side includes photovoltaic power stations and / or wind power; the demand side includes power plants and / or users.

7. The independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method according to claim 1 is characterized in that: The power generation side output value is obtained based on the user load curve; the demand side load value is obtained based on the wind power and photovoltaic output ratio curves and the corresponding installed capacities of wind power and photovoltaic.

8. An independent energy storage dynamic Shapley value ramp-up auxiliary service cost sharing system, characterized in that: include: A data acquisition module is used to obtain the power generation side output value and demand side load value of the independent energy storage power station in the area to be evaluated; The cost allocation calculation module is used to input the power output value of the power generation side and the load value of the demand side into the pre-built dynamic Shapley value allocation model of the ramp-up auxiliary service cost, and output the corresponding ramp-up auxiliary service cost allocation amount and cost allocation ratio of the power generation side and the demand side; The dynamic Shapley value allocation model of ramp-up auxiliary service cost divides the allocation of the generation side and the demand side to the ramp-up auxiliary service into two stages: in the first stage, both the generation side and the demand side participate in the allocation of the ramp-up auxiliary service; In the second stage, the power generation side or the demand side withdraws from the sharing of the ramp auxiliary service.

9. A device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of the independent energy storage dynamic Shapley value ramp-up auxiliary service cost allocation method as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, it is used to implement the steps of the independent energy storage dynamic Shapley value ramp-up auxiliary service cost sharing method as described in any one of claims 1 to 7.

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