A method, system, device and storage medium for allocating climbing assist service fees

Abstract

The present invention discloses a method, system, device and storage medium for allocating ramp - up assistance service fees, including taking the ramp - up assistance service settlement fee corresponding to the predicted value as the deterministic fee, and taking the ramp - up assistance service settlement fee corresponding to the prediction error value as the uncertain fee; obtaining the actual power and declared power of market entities; calculating a first allocation ratio according to the first difference between the two actual powers of each market entity within adjacent preset time periods; and calculating a second allocation ratio according to the second difference between the actual power and declared power of each market entity within the same preset time period. The present invention allocates fees to market entities by dividing the demand sources of ramp - up assistance services, and determines the influence of market entities on the resulting demand through deviation calculation, providing a reasonable allocation plan for fee allocation, and providing a prerequisite for optimizing resource allocation and effectively transmitting auxiliary service costs in the ramp - up assistance service market.

Description

Technical Field

[0001] The present invention relates to the technical field of power auxiliary services, and particularly to a method, system, device, and storage medium for allocating the cost of ramp-up auxiliary services considering the sources of deterministic and uncertain ramp-up demands. Background Art

[0002] According to the "Measures for the Administration of Power Auxiliary Services" issued by the National Energy Administration in 2021, ramping is classified as active power balance service, and the definition of ramp-up auxiliary service is given, that is, to cope with the short-term large fluctuations in the system net load caused by uncertain factors such as the fluctuations of renewable energy power generation, grid-connected entities with strong load regulation rates adjust their output according to the dispatching instructions to maintain the power balance of the system. The main purpose of ramp-up auxiliary service is to cope with the changes in the system net load caused by the fluctuations of renewable energy power generation to maintain power balance. Therefore, it is an important part of improving the flexibility, adequacy of ramp-up capacity, and power balance security of the new power system.

[0003] At present, there is no ramp-up auxiliary service market opened in China. However, with the high proportion of new energy connected to the grid, the net load fluctuations of the domestic power system will gradually increase, and the demand for flexible ramp-up capacity will also increase accordingly. Therefore, it is imperative to open a ramp-up auxiliary service market. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides a method, system, device, and storage medium for allocating the cost of ramp-up auxiliary services considering the sources of deterministic and uncertain ramp-up demands, which provides a prerequisite for optimizing resource allocation and effectively transmitting auxiliary service costs in the ramp-up auxiliary service market through a reasonably designed relevant cost allocation mechanism.

[0005] In a first aspect, the present invention provides a method for allocating the cost of ramp-up auxiliary services, the method comprising:

[0006] Obtain the settlement cost of the ramp-up auxiliary service of the power system, the predicted value and the prediction error value of the net load fluctuation, take the settlement cost of the ramp-up auxiliary service corresponding to the predicted value as the deterministic cost, and take the settlement cost of the ramp-up auxiliary service corresponding to the prediction error value as the uncertain cost;

[0007] According to the ramp-up events of the power system, divide the deterministic cost into deterministic up-ramp cost and deterministic down-ramp cost, and divide the uncertain cost into uncertain up-ramp cost and uncertain down-ramp cost;

[0008] Obtain the actual power and declared power of different types of market entities within a plurality of preset time periods, and the market entities include new energy units, power users, and external power transmission tie lines;

[0009] Divide the market entities into first sub-market entities and second sub-market entities according to the first difference between the two actual powers of each market entity within adjacent preset time periods, and calculate the corresponding first allocation ratio of the market entity according to the first difference;

[0010] Allocate the deterministic up-ramp cost among the first sub-market entities according to the first allocation ratio, and allocate the deterministic down-ramp cost among the second sub-market entities;

[0011] Divide the market entities into third sub-market entities and fourth sub-market entities according to the second difference between the actual power and the declared power of each market entity within the same preset time period, and calculate the corresponding second allocation ratio of the market entity according to the second difference;

[0012] Allocate the uncertain up-ramp cost among the third sub-market entities according to the second allocation ratio, and allocate the uncertain down-ramp cost among the fourth sub-market entities.

[0013] Further, the step of obtaining the actual power and declared power of different types of market entities within multiple preset time periods includes:

[0014] Set preset time periods according to the scheduling interval of the power system, and divide the operating days according to the preset time periods;

[0015] Obtain the actual power and declared power of different types of market entities within the operating day, where the actual power includes the actual power generation of the new energy units, the actual power consumption of the power users, and the actual power transmission of the external power transmission tie lines, and the declared power includes the ultra-short-term output prediction power declared by the new energy units, the real-time declared power consumption declared by the power users, and the planned power transmission declared by the external power transmission tie lines.

[0016] Further, the step of dividing the market entities into first sub-market entities and second sub-market entities according to the first difference between the two actual powers of each market entity within adjacent preset time periods includes:

[0017] Subtract the actual power of each market entity within the preset time period from the actual power within the previous preset time period to obtain the first difference of each market entity, and compare the first difference with zero;

[0018] If the first difference of the new energy unit is less than zero, then regard the new energy unit as a first sub-market entity, and if the first difference of the new energy unit is greater than zero, then regard the new energy unit as a second sub-market entity;

[0019] If the first difference of the power user is less than zero, the power user is taken as the second sub-market entity; if the first difference of the power user is greater than zero, the power user is taken as the first sub-market entity.

[0020] If the first difference of the external power transmission connection line is less than zero, the external power transmission connection line is taken as the second sub-market entity; if the first difference of the external power transmission connection line is greater than zero, the external power transmission connection line is taken as the first sub-market entity.

[0021] Further, the step of calculating the first allocation ratio corresponding to the market entity according to the first difference includes:

[0022] Taking the absolute value of the first difference as the first absolute difference, and adding the first absolute differences corresponding to each market entity to obtain the total predicted value;

[0023] Taking the ratio of the first absolute difference to the total predicted value as the first allocation ratio corresponding to the market entity in the previous preset time period;

[0024] The first allocation ratio is calculated using the following formula:

[0025]

[0026] In the formula, represents the first allocation ratio corresponding to the j-th market entity in market entity i in the t-1 time period, i represents three types of market entities, including new energy units, power users, and external power transmission connection lines, N i represents the number of market entities i, j represents the j-th market entity in N i and t represents the preset time period, and X represents the actual power.

[0027] Further, the step of classifying the market entity into a third sub-market entity and a fourth sub-market entity according to the second difference between the actual power and the declared power of each market entity in the same preset time period includes:

[0028] Subtracting the declared power from the actual power of each market entity in the same preset time period to obtain the second difference of each market entity, and comparing the second difference with zero;

[0029] If the second difference of the new energy unit is less than zero, the new energy unit is taken as the third sub-market entity; if the first difference of the new energy unit is greater than zero, the new energy unit is taken as the fourth sub-market entity;

[0030] If the second difference of the electricity user is less than zero, the electricity user is taken as the fourth sub-market entity; if the second difference of the electricity user is greater than zero, the electricity user is taken as the third sub-market entity.

[0031] If the second difference of the external power transmission connection line is less than zero, the external power transmission connection line is taken as the fourth sub-market entity; if the second difference of the external power transmission connection line is greater than zero, the external power transmission connection line is taken as the third sub-market entity.

[0032] Further, the step of calculating the second allocation ratio corresponding to the market entity according to the second difference includes:

[0033] Taking the absolute value of the second difference as the second absolute difference, and adding up the second absolute differences corresponding to each market entity to obtain the total prediction error;

[0034] Taking the ratio of the second absolute difference to the total prediction error as the second allocation ratio corresponding to the market entity in the previous preset time period;

[0035] The second allocation ratio is calculated by the following formula:

[0036]

[0037] In the formula, represents the second allocation ratio corresponding to the j-th market entity in the market entity i in the t-1 time period, i represents three types of market entities, including new energy units, electricity users and external power transmission connection lines, N i represents the number of market entities i, j represents the j-th market entity in N i t represents the preset time period, X represents the actual power, X F represents the declared power.

[0038] In a second aspect, the present invention provides a ramp-up assistance service cost allocation system, the system includes:

[0039] A cost division module, configured to obtain the ramp-up assistance service settlement cost of the power system, the predicted value of the net load fluctuation and the prediction error value, take the ramp-up assistance service settlement cost corresponding to the predicted value as the deterministic cost, and take the ramp-up assistance service settlement cost corresponding to the prediction error value as the uncertain cost;

[0040] According to the ramp-up event of the power system, dividing the deterministic cost into a deterministic ramp-up cost and a deterministic ramp-down cost, and dividing the uncertain cost into an uncertain ramp-up cost and an uncertain ramp-down cost;

[0041] A power data acquisition module is configured to acquire the actual power and declared power of different types of market entities within multiple preset time periods. The market entities include new energy generating units, power users, and external power transmission connection lines.

[0042] A deterministic cost allocation module is configured to divide the market entities into first sub-market entities and second sub-market entities according to a first difference between the two actual powers of each market entity within adjacent preset time periods, and calculate a first allocation ratio corresponding to the market entity according to the first difference.

[0043] Allocate the deterministic upward ramp cost among the first sub-market entities according to the first allocation ratio, and allocate the deterministic downward ramp cost among the second sub-market entities.

[0044] An uncertainty cost allocation module is configured to divide the market entities into third sub-market entities and fourth sub-market entities according to a second difference between the actual power and the declared power of each market entity within the same preset time period, and calculate a second allocation ratio corresponding to the market entity according to the second difference.

[0045] Allocate the uncertainty upward ramp cost among the third sub-market entities according to the second allocation ratio, and allocate the uncertainty downward ramp cost among the fourth sub-market entities.

[0046] In a third aspect, an embodiment of the present invention further provides a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the steps of the above method are implemented.

[0047] In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

[0048] The present invention provides a method, a system, a computer device, and a storage medium for allocating ramp - up auxiliary service costs. Through the method, the present invention divides the sources of ramp - up auxiliary service requirements into deterministic and uncertain ones, characterizes the impact on demand by deviation, and calculates corresponding allocation ratios according to the deviation. Thereby, it provides a prerequisite for optimizing resource allocation in the auxiliary service market, effectively transmitting the costs of ramp - up auxiliary services, and motivating market entities to coordinate and cooperate to improve the stability of the power system, and provides technical support for the subsequent construction of the domestic ramp - up auxiliary service market. Description of the Drawings

[0049] Figure 1 It is a flowchart of the allocation method in an embodiment of the present invention;

[0050] Figure 2 It is a schematic structural diagram of the distribution system in the embodiment of the present invention;

[0051] Figure 3 It is the internal structure diagram of the computer device in the embodiment of the present invention. Specific embodiments

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Please refer to Figure 1 , a method for allocating ramp - up assistance service fees proposed in the first embodiment of the present invention, which includes steps S10 to S70:

[0054] Step S10, obtain the ramp - up assistance service settlement fee of the power system, the predicted value and the prediction error value of the net load fluctuation, take the ramp - up assistance service settlement fee corresponding to the predicted value as the deterministic fee, and take the ramp - up assistance service settlement fee corresponding to the prediction error value as the uncertainty fee.

[0055] Step S20, according to the ramp - up events of the power system, divide the deterministic fee into a deterministic up - ramp fee and a deterministic down - ramp fee, and divide the uncertainty fee into an uncertainty up - ramp fee and an uncertainty down - ramp fee.

[0056] Ramp - up assistance service is to cope with the short - term and large - scale changes in the system net load brought about by uncertain factors such as the fluctuation of renewable energy power generation. Grid - connected entities with strong load regulation rates adjust their output according to the dispatching instructions to maintain the power balance of the system. The main purpose of the ramp - up assistance service is to cope with the system net load changes brought about by the fluctuation of renewable energy power generation to maintain power balance. Therefore, it is an important part of improving the flexibility, adequacy of ramp - up capacity, and power balance security of the new power system. However, there is currently no special research on the ramp - up assistance service market in China, and there is a lack of methods for allocating ramp - up assistance - related fees. In order to allocate the assistance fees more reasonably among market entities, the present invention divides the ramp - up assistance service settlement fee according to the source of the ramp - up demand.

[0057] Ramp - up assistance services are usually used to cope with the predicted value of the system net load fluctuation and its prediction error. Among them, the predicted value of the system net load fluctuation can be obtained through various prediction means, so its calculation has certainty. And although there will be errors in the prediction of the system net load fluctuation, the ramp - up assistance services used to cope with the prediction error can be settled separately. Due to the uncertain nature of the prediction error, this part of the settlement cost can be treated as an uncertainty cost. At the settlement level, since the system net load fluctuation calculated based on the predicted value is stripped of the uncertainty attribute brought by the error, the settlement cost of the ramp - up assistance service used to cope with the predicted value of the system net load fluctuation can be regarded as a deterministic cost, while the settlement cost of the ramp - up assistance service used to cope with the prediction error can be regarded as an uncertainty cost. That is, the total settlement cost is divided into a deterministic cost and an uncertainty cost.

[0058] Since the ramp - up events in the power system can be divided into up - ramp events and down - ramp events according to different attributes, therefore, according to the different attributes of the ramp - up events, the deterministic cost can be further divided into a deterministic up - ramp cost and a deterministic down - ramp cost, and the uncertainty cost can be divided into an uncertainty up - ramp cost and an uncertainty down - ramp cost.

[0059] Step S30: Obtain the actual power and declared power of different types of market entities within multiple preset time periods. The market entities include new - energy units, power users, and external - power - transmission tie - lines.

[0060] After the ramp - up assistance service settlement cost is divided, it is also necessary to allocate the settlement cost among market entities. Here, we select different types of market entities, including new - energy units, power users, and external - power - transmission tie - lines. That is, it includes not only new - energy units on the power - generation side and power users on the power - consumption side, but also takes into account the power - transmission situation of the external - power - transmission tie - lines. Based on the principle of "who causes, who bears", the settlement cost is apportioned. For this purpose, it is necessary to divide each market entity according to the change of the power - data of each market entity.

[0061] The data collected in the present invention are the actual power and declared power of various market entities on the operation day, including the actual power generation of new - energy units and the predicted power of ultra - short - term output declared, the actual power consumption of power users and the real - time declared power consumption declared, and the actual power transmission of the power - transmission tie - line and the planned power transmission declared. It should be noted that since these powers will be used for the calculation of the distribution ratio later, in the present invention, these power data only represent the magnitude of the value, that is, they are all taken as positive values in the calculation process.

[0062] Considering that the dispatching interval of most domestic power markets is 15 minutes, the length of the preset time period is set to 15 minutes. That is to say, each operating day consists of 96 time periods. To allocate costs more accurately and reasonably, we allocate costs by time period based on the costs of each time period. To calculate the allocated costs for a single or multiple operating days, simply sum up the allocated costs of all calculated time periods. Of course, the 15 minutes taken here is just a preferred method, and the actual duration in practical use can be flexibly set according to the actual situation.

[0063] Step S40: Divide the market entity into a first sub-market entity and a second sub-market entity according to the first difference between the two actual powers of each market entity within adjacent preset time periods, and calculate the first allocation ratio corresponding to the market entity according to the first difference.

[0064] First is the allocation of deterministic costs. Since deterministic costs include deterministic up-ramp costs and deterministic down-ramp costs, for different types of costs, the objects of allocation will also be different. Therefore, we need to divide the market entities accordingly according to the change situation of the collected power data. The specific steps are as follows:

[0065] Step S401: Subtract the actual power of each market entity in the preset time period from the actual power in the previous preset time period to obtain the first difference of each market entity, and compare the first difference with zero.

[0066] Step S402: If the first difference of the new energy unit is less than zero, then regard the new energy unit as the first sub-market entity; if the first difference of the new energy unit is greater than zero, then regard the new energy unit as the second sub-market entity.

[0067] Step S403: If the first difference of the electricity user is less than zero, then regard the electricity user as the second sub-market entity; if the first difference of the electricity user is greater than zero, then regard the electricity user as the first sub-market entity.

[0068] Step S404: If the first difference of the external power transmission connection line is less than zero, then regard the external power transmission connection line as the second sub-market entity; if the first difference of the external power transmission connection line is greater than zero, then regard the external power transmission connection line as the first sub-market entity.

[0069] Since the settlement cost of the ramping assistance service for predicting the net load fluctuation of the response system is used as the deterministic cost in the present invention, the deterministic cost can be allocated according to the change of the actual power of the market entities, that is, calculate the differences between the actual power generation, power consumption and power transmission of the new energy units, power users and external power transmission connection lines in the current period and the previous period, and allocate the cost of the previous period according to the ratio calculated by the differences.

[0070] And according to the ramping situation, allocate the deterministic up-ramping cost to the new energy units with reduced power generation, power users with increased power consumption and external power transmission connection lines with increased external power transmission compared with the previous period, and allocate the deterministic down-ramping cost to the new energy units with increased power generation, power users with reduced power consumption and external power transmission connection lines with reduced external power transmission compared with the previous period. That is to say, according to the difference between the actual power in this period and the actual power in the previous period, the new energy units with reduced actual power generation, power users with increased actual power consumption and external power transmission connection lines with increased actual power transmission are used as the first sub-market entities, while the new energy units with increased actual power generation, power users with reduced actual power consumption and external power transmission connection lines with reduced actual power transmission are used as the second sub-market entities, and the deterministic up-ramping cost will be allocated among the first sub-market entities, and the deterministic down-ramping cost will be allocated among the second sub-market entities.

[0071] Step S405, take the absolute value of the first difference as the first absolute difference, and add up the first absolute differences corresponding to each market entity to obtain the total predicted value;

[0072] Step S406, take the ratio of the first absolute difference to the total predicted value as the first allocation ratio corresponding to the market entity in the previous preset period;

[0073] The first allocation ratio is calculated by the following formula:

[0074]

[0075] In the formula, represents the first allocation ratio corresponding to the jth market entity in the market entity i in the period t - 1, i represents three types of market entities, including new energy units, power users and external power transmission connection lines, N i represents the number of market entities i, j represents the jth market entity in N i and t represents the preset period, and X represents the actual power.

[0076] Step S50: Allocate the deterministic upward ramp cost among the first sub - market entities according to the first allocation ratio, and allocate the deterministic downward ramp cost among the second sub - market entities.

[0077] Although the costs allocated to different sub - market entities are different, the calculation method for the allocation ratio of the deterministic cost is the same. It is calculated based on the fluctuation value of the actual power in the current period compared with the previous period, that is, the difference between the two actual powers is calculated in an absolute value manner, and then the sum of the absolute values of the differences of all market entities is used as the denominator, while the absolute value of the difference in the actual power of each market entity in the current period is used as the numerator. The ratio of the two constitutes the allocation ratio of the deterministic cost of this market entity in the previous period, as shown in formula 1 above.

[0078] After obtaining this allocation ratio, the deterministic upward ramp cost or the deterministic downward ramp cost can be allocated according to the different sub - market entities to which the market entity belongs in different periods. That is, within the preset period, the cost allocated to each market entity within the first sub - market entity is the deterministic upward ramp cost multiplied by the first allocation ratio corresponding to this market entity, and the cost allocated to each market entity within the second sub - market entity is the deterministic downward ramp cost multiplied by the first allocation ratio corresponding to this market entity.

[0079] Step S60: Divide the market entities into a third sub - market entity and a fourth sub - market entity according to the second difference between the actual power and the declared power of each market entity within the same preset period, and calculate the second allocation ratio corresponding to the market entity according to the second difference.

[0080] Similar to the calculation method of the above - mentioned deterministic cost allocation, for the sharing of the uncertain ramp - up ancillary service cost in each period, the cost is allocated according to the ratio calculated based on the difference between the actual power and the declared power of the market entity, and the market entity is divided according to the difference between the actual power and the declared power of the market entity in the current period to correspond to the allocation of the uncertain upward ramp cost and the uncertain downward ramp cost. The specific steps are as follows:

[0081] Step S601: Subtract the declared power from the actual power of each market entity within the same preset period to obtain the second difference of each market entity, and compare the second difference with zero;

[0082] Step S602: If the second difference of the new - energy unit is less than zero, then regard the new - energy unit as the third sub - market entity; if the first difference of the new - energy unit is greater than zero, then regard the new - energy unit as the fourth sub - market entity;

[0083] Step S603: If the second difference of the electricity user is less than zero, then regard the electricity user as the fourth sub-market entity; if the second difference of the electricity user is greater than zero, then regard the electricity user as the third sub-market entity.

[0084] Step S604: If the second difference of the external power transmission connection line is less than zero, then regard the external power transmission connection line as the fourth sub-market entity; if the second difference of the external power transmission connection line is greater than zero, then regard the external power transmission connection line as the third sub-market entity.

[0085] Since the present invention takes the ramp assist service settlement cost for coping with prediction errors as the uncertainty cost, then the uncertainty cost can be allocated according to the difference between the actual power and the declared power of the market entity, that is, calculate the differences between the actual power generation power, actual power consumption power, and actual power transmission power of the new energy unit, electricity user, and external power transmission connection line in the current period and their declared ultra-short-term output prediction power, real-time declared power consumption, and planned power transmission power, and allocate the cost of the previous period according to the ratio calculated from the differences.

[0086] And according to the up-ramp and down-ramp situations, allocate the uncertainty up-ramp cost to the new energy units with insufficient power generation compared to the declared ultra-short-term output prediction value, electricity users with excessive power consumption compared to the real-time declared power, and external power transmission connection lines with excessive external power transmission compared to the planned power transmission power, and allocate the uncertainty down-ramp cost to the new energy units with excessive power generation, electricity users with too little power consumption, and external power transmission connection lines with too little external power transmission. That is to say, according to the difference between the actual power and the declared power in this period, regard the new energy units with less actual power generation, electricity users with more actual power consumption, and external power transmission connection lines with more actual power transmission as the third sub-market entities, and regard the new energy units with more actual power generation, electricity users with less actual power consumption, and external power transmission connection lines with less actual power transmission as the fourth sub-market entities. Allocate the uncertainty up-ramp cost among the third sub-market entities, and allocate the uncertainty down-ramp cost among the fourth sub-market entities.

[0087] Step S605: Take the absolute value of the second difference as the second absolute difference, and add up the second absolute differences corresponding to each market entity to obtain the total prediction error.

[0088] Step S606: Take the ratio of the second absolute difference to the total prediction error as the second allocation ratio corresponding to the market entity in the previous preset period.

[0089] The second allocation ratio is calculated using the following formula:

[0090]

[0091] In the formula, represents the second allocation ratio corresponding to the j-th market entity in market entity i during the (t - 1) period. i represents three types of market entities, including new energy units, electricity users, and external power transmission connection lines, N i represents the number of market entities i, and j represents the j-th market entity in N i . t represents the preset period, X represents the actual power, and X F represents the declared power.

[0092] Step S70: According to the second allocation ratio, allocate the uncertainty up-ramp cost among the third sub-market entities, and allocate the uncertainty down-ramp cost among the fourth sub-market entities.

[0093] Similarly, although the costs allocated to different sub-market entities are different, the calculation method for the allocation ratio of the uncertainty cost is the same. It is based on the difference between the actual power and the declared power during the current period, that is, the absolute value of the difference between the two powers is calculated, and then the sum of the absolute values of the differences of all market entities is used as the denominator, while the absolute value of the difference between the actual power and the declared power of each market entity during the current period is used as the numerator. The ratio of the two constitutes the allocation ratio of the uncertainty cost for this market entity in the previous period, as shown in formula 2 above.

[0094] After obtaining this allocation ratio, the uncertainty up-ramp cost or the uncertainty down-ramp cost can be allocated according to the different sub-market entities to which the market entity belongs in different periods. That is, within the preset period, the cost allocated to each market entity in the third sub-market entity is the uncertainty up-ramp cost multiplied by the second allocation ratio corresponding to this market entity, and the cost allocated to each market entity in the fourth sub-market entity is the uncertainty down-ramp cost multiplied by the second allocation ratio corresponding to this market entity.

[0095] A method for allocating ramp - up auxiliary service costs provided in this embodiment divides the sources of deterministic and uncertain ramp - up auxiliary service demands, allocates ramp - up auxiliary service costs to different market entities, determines the influence of market entities on the resulting demands through deviation calculation, determines the allocation ratio of ramp - up auxiliary service costs according to the corresponding deviations, and accurately divides the costs corresponding to each market entity by setting periods, further improving the rationality of cost allocation, thereby providing technical support for the subsequent construction of the domestic ramp - up auxiliary service market.

[0096] Please refer to Figure 2, based on the same inventive concept, a ramp - up / down assistance service cost allocation system proposed in the second embodiment of the present invention includes:

[0097] A cost division module 10, configured to obtain the ramp - up / down assistance service settlement cost of the power system, the predicted value of the net load fluctuation, and the prediction error value, take the ramp - up / down assistance service settlement cost corresponding to the predicted value as the deterministic cost, and take the ramp - up / down assistance service settlement cost corresponding to the prediction error value as the uncertain cost;

[0098] According to the ramp - up / down events of the power system, divide the deterministic cost into a deterministic ramp - up cost and a deterministic ramp - down cost, and divide the uncertain cost into an uncertain ramp - up cost and an uncertain ramp - down cost;

[0099] A power data acquisition module 20, configured to acquire the actual power and declared power of different types of market entities within a plurality of preset time periods, where the market entities include new - energy units, power users, and external - power transmission tie - lines;

[0100] A deterministic cost allocation module 30, configured to divide the market entities into a first sub - market entity and a second sub - market entity according to a first difference between the two actual powers of each market entity within adjacent preset time periods, and calculate a first allocation ratio corresponding to the market entity according to the first difference;

[0101] Allocate the deterministic ramp - up cost among the first sub - market entities according to the first allocation ratio, and allocate the deterministic ramp - down cost among the second sub - market entities;

[0102] An uncertain cost allocation module 40, configured to divide the market entities into a third sub - market entity and a fourth sub - market entity according to a second difference between the actual power and the declared power of each market entity within the same preset time period, and calculate a second allocation ratio corresponding to the market entity according to the second difference;

[0103] Allocate the uncertain ramp - up cost among the third sub - market entities according to the second allocation ratio, and allocate the uncertain ramp - down cost among the fourth sub - market entities.

[0104] The technical features and technical effects of the climbing assistance service cost allocation system proposed in the embodiments of the present invention are the same as those of the method proposed in the embodiments of the present invention, and will not be elaborated here. Each module in the above climbing assistance service cost allocation system can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in the processor in the computer device in the form of hardware or be independent of it, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0105] Please refer to Figure 3 , the internal structure diagram of a computer device in an embodiment. The computer device can specifically be a terminal or a server. The computer device includes a processor, a memory, a network interface, a display, and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, it realizes the climbing assistance service cost allocation method. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer covered on the display screen, or a button, a trackball, or a touchpad provided on the housing of the computer device, or an external keyboard, a touchpad, or a mouse, etc.

[0106] Those of ordinary skill in the art can understand that Figure 3 the structure shown in

[0107] merely represents a block diagram of some structures related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computing device may include more or fewer components than those shown in the figure, or combine some components, or have the same component layout.

[0108] In addition, an embodiment of the present invention also proposes a computer device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, it implements the steps of the above method.

[0109] In summary, a method, system, device, and storage medium for allocating ramp - up assistance service fees proposed in an embodiment of the present invention. The method obtains the ramp - up assistance service settlement fees of the power system, the predicted value of the net load fluctuation, and the prediction error value. The ramp - up assistance service settlement fees corresponding to the predicted value are used as deterministic fees, and the ramp - up assistance service settlement fees corresponding to the prediction error value are used as uncertain fees. According to the ramp - up events of the power system, the deterministic fees are divided into deterministic ramp - up fees and deterministic ramp - down fees, and the uncertain fees are divided into uncertain ramp - up fees and uncertain ramp - down fees. The actual power and declared power of different types of market entities within multiple preset time periods are obtained. The market entities include new - energy units, power users, and external power transmission connection lines. According to the first difference between the two actual powers of each market entity in adjacent preset time periods, the market entity is divided into a first sub - market entity and a second sub - market entity, and a first allocation ratio corresponding to the market entity is calculated based on the first difference. According to the first allocation ratio, the deterministic ramp - up fees are allocated among the first sub - market entities, and the deterministic ramp - down fees are allocated among the second sub - market entities. According to the second difference between the actual power and the declared power of each market entity within the same preset time period, the market entity is divided into a third sub - market entity and a fourth sub - market entity, and a second allocation ratio corresponding to the market entity is calculated based on the second difference. According to the second allocation ratio, the uncertain ramp - up fees are allocated among the third sub - market entities, and the uncertain ramp - down fees are allocated among the fourth sub - market entities. The present invention provides a reasonable allocation plan for the allocation of relevant fees by dividing the demand sources of ramp - up assistance services and determining the impact of market entities on the demand through deviation calculation, and determining the sharing ratio of ramp - up assistance service fees according to the corresponding deviation. This provides a prerequisite for optimizing resource allocation in the ramp - up assistance service market and effectively transmitting the auxiliary service cost. Moreover, the allocation method of the present invention is based on the principle of "who causes, who bears", which can effectively encourage new - energy units to install energy storage devices to reduce the difference in their output fluctuations, and at the same time encourage loads to perform demand response, reduce the power consumption load when the power supply and demand are relatively tense, thereby reducing the net load fluctuation of the system and improving the stability and safety of the power system.

[0110] Each embodiment in this specification is described in a progressive manner. For parts that are the same or similar in each embodiment, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for system embodiments, since they are basically similar to method embodiments, the description is relatively simple, and reference can be made to the relevant parts of the method embodiments for the relevant content. It should be noted that the technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as within the scope described in this specification.

[0111] The above-described embodiments only represent several preferred embodiments of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the protection scope of the claims.

Claims

1. A method for allocating the cost of a climbing assist service, characterized in that, Including: Obtain the settlement cost of the ramping assistance service of the power system, the predicted value and the prediction error value of the net load fluctuation, take the settlement cost of the ramping assistance service corresponding to the predicted value as the deterministic cost, and take the settlement cost of the ramping assistance service corresponding to the prediction error value as the uncertain cost; According to the ramping events of the power system, divide the deterministic cost into a deterministic up-ramping cost and a deterministic down-ramping cost, and divide the uncertain cost into an uncertain up-ramping cost and an uncertain down-ramping cost; Obtain the actual power and declared power of different types of market entities within multiple preset time periods, where the market entities include new energy units, power users, and external power transmission tie lines; According to the first difference between the two actual powers of each market entity within adjacent preset time periods, divide the market entity into a first sub-market entity and a second sub-market entity, and calculate the corresponding first allocation ratio of the market entity according to the first difference; According to the first allocation ratio, allocate the deterministic up-ramping cost among the first sub-market entities, and allocate the deterministic down-ramping cost among the second sub-market entities; According to the second difference between the actual power and the declared power of each market entity within the same preset time period, divide the market entity into a third sub-market entity and a fourth sub-market entity, and calculate the corresponding second allocation ratio of the market entity according to the second difference; According to the second allocation ratio, allocate the uncertain up-ramping cost among the third sub-market entities, and allocate the uncertain down-ramping cost among the fourth sub-market entities.

2. The climbing assist service cost allocation method according to claim 1, wherein The step of obtaining the actual power and declared power of different types of market entities within multiple preset time periods includes: Set preset time periods according to the dispatching interval of the power system, and divide the operating day according to the preset time periods; Obtain the actual power and declared power of different types of market entities within the operating day, where the actual power includes the actual power generation of the new energy unit, the actual power consumption of the power user, and the actual power transmission of the external power transmission tie line, and the declared power includes the ultra-short-term output prediction power declared by the new energy unit, the real-time declared power consumption declared by the power user, and the planned power transmission declared by the external power transmission tie line.

3. The method for allocating the climbing assist service fee according to claim 1, wherein The step of dividing the market entity into a first sub-market entity and a second sub-market entity according to the first difference between the two actual powers of each market entity within adjacent preset time periods includes: Subtract the actual power of each market entity within the preset time period from the actual power within the previous preset time period to obtain the first difference of each market entity, and compare the first difference with zero; If the first difference of the new energy unit is less than zero, then take the new energy unit as the first sub-market entity, and if the first difference of the new energy unit is greater than zero, then take the new energy unit as the second sub-market entity; If the first difference of the electricity user is less than zero, the electricity user is taken as the second sub-market entity; if the first difference of the electricity user is greater than zero, the electricity user is taken as the first sub-market entity. If the first difference of the external power transmission line is less than zero, the external power transmission line is taken as the second sub-market entity; if the first difference of the external power transmission line is greater than zero, the external power transmission line is taken as the first sub-market entity.

4. The climbing assist service cost allocation method according to claim 3, wherein The step of calculating the first allocation ratio corresponding to the market entity according to the first difference includes: Taking the absolute value of the first difference as the first absolute difference, and adding up the first absolute differences corresponding to each market entity to obtain the total predicted value; Taking the ratio of the first absolute difference to the total predicted value as the first allocation ratio corresponding to the market entity in the previous preset time period; Calculating the first allocation ratio using the following formula: Wherein, represents the first allocation ratio corresponding to the j-th market entity in market entity i during the t-1 period. i represents three types of market entities, including new energy units, electricity users, and external power transmission connection lines, N i represents the number of market entities i, and j represents the j-th market entity in N i and t represents the preset period, and X represents the actual power.

5. The method for allocating the cost of the climbing assist service according to claim 1, wherein The step of dividing the market entity into the third sub-market entity and the fourth sub-market entity according to the second difference between the actual power and the declared power of each market entity in the same preset time period includes: Subtracting the declared power from the actual power of each market entity in the same preset time period to obtain the second difference of each market entity, and comparing the second difference with zero; If the second difference of the new energy unit is less than zero, the new energy unit is taken as the third sub-market entity; if the first difference of the new energy unit is greater than zero, the new energy unit is taken as the fourth sub-market entity; If the second difference of the electricity user is less than zero, the electricity user is taken as the fourth sub-market entity; if the second difference of the electricity user is greater than zero, the electricity user is taken as the third sub-market entity; If the second difference of the external power transmission line is less than zero, the external power transmission line is taken as the fourth sub-market entity; if the second difference of the external power transmission line is greater than zero, the external power transmission line is taken as the third sub-market entity.

6. The method for allocating the climbing assist service fee according to claim 5, wherein The step of calculating the second allocation ratio corresponding to the market entity according to the second difference includes: Taking the absolute value of the second difference as the second absolute difference, and adding up the second absolute differences corresponding to each market entity to obtain the total prediction error; Taking the ratio of the second absolute difference to the total prediction error as the second allocation ratio corresponding to the market entity in the previous preset time period; Calculating the second allocation ratio using the following formula: Wherein, represents the second allocation ratio corresponding to the j-th market entity in market entity i during the (t - 1) period. i represents three types of market entities, including new energy units, electricity users, and external power transmission connection lines, N i represents the number of market entities i, and j represents the j-th market entity in N i t represents a preset period, X represents the actual power, and X F represents the declared power.

7. A climbing assist service fee allocation system, characterized in that, including: A cost division module, configured to obtain the settlement cost of the ramping ancillary service of the power system, the predicted value and the prediction error value of the net load fluctuation, take the settlement cost of the ramping ancillary service corresponding to the predicted value as the deterministic cost, and take the settlement cost of the ramping ancillary service corresponding to the prediction error value as the uncertainty cost; Dividing the deterministic cost into a deterministic up-ramping cost and a deterministic down-ramping cost according to the ramping event of the power system, and dividing the uncertainty cost into an uncertainty up-ramping cost and an uncertainty down-ramping cost; A power data acquisition module, configured to acquire the actual power and declared power of different types of market entities within multiple preset time periods, where the market entities include new energy generating units, power users, and external power transmission connection lines; A deterministic cost allocation module, configured to divide the market entities into first sub-market entities and second sub-market entities according to a first difference between two of the actual powers of each market entity within adjacent preset time periods, and calculate a first allocation ratio corresponding to the market entity according to the first difference; Allocate the deterministic up-ramp cost among the first sub-market entities according to the first allocation ratio, and allocate the deterministic down-ramp cost among the second sub-market entities; An uncertainty cost allocation module, configured to divide the market entities into third sub-market entities and fourth sub-market entities according to a second difference between the actual power and the declared power of each market entity within the same preset time period, and calculate a second allocation ratio corresponding to the market entity according to the second difference; Allocate the uncertainty up-ramp cost among the third sub-market entities according to the second allocation ratio, and allocate the uncertainty down-ramp cost among the fourth sub-market entities.

8. A computer device, comprising a memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the method according to any one of claims 1 to 6.

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