Transmission capacity reduction compensation method and system based on time-sharing opportunity cost change

Abstract

This invention belongs to the field of power automation technology and discloses a method and system for compensating for transmission capacity reduction based on time-of-use opportunity cost changes. The method includes: acquiring the actual load curve of the transmission channel to be compensated; converting the actual load curve into a continuous load curve; calculating the total transmission cost at each time point based on the continuous load curve; calculating the opportunity cost for each time period based on the continuous load curve; obtaining the line reduction compensation for each time period based on the opportunity cost; and outputting the line reduction compensation for each time period. This invention can calculate the opportunity cost lost after reducing transmission capacity at each time point and use this as the basis for capacity reduction compensation, rationally guiding market entities to efficiently utilize transmission channels, improving the utilization rate of inter-provincial ultra-high voltage channels, preventing unnecessary waste, and promoting the optimal allocation of power resources.

Description

Technical Field

[0001] This invention belongs to the field of power automation technology, and specifically relates to a method and system for compensating for transmission capacity reduction based on time-of-use opportunity cost changes. Background Technology

[0002] Inter-provincial medium- and long-term contract transactions are constrained by the geographical locations of the transacting parties and the transmission channels, resulting in high transaction complexity. Furthermore, issues such as provincial balance at the sending and receiving ends, limited channel capacity, and renewable energy consumption prevent the delivery of electricity amounts stipulated in the contracts. With the advancement of the spot market, inter-provincial medium- and long-term contracts need to shift from electricity-based trading to curve trading. The current electricity-based contract trading mechanism is insufficient to meet the market participants' need for flexible adjustments to trading curves. Ultra-high voltage (UHV) transmission channels have transmission fees calculated based on the line. In the repurchase, transfer, and replacement of inter-provincial medium- and long-term contracts, temporary adjustments to transmission capacity frequently lead to channel idleness. How to improve the utilization rate of inter-provincial UHV channels, prevent unnecessary waste, and promote the optimal allocation of power resources is an urgent technical problem to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a method and system for compensating for transmission capacity reduction based on time-of-use opportunity cost changes, so as to improve the utilization rate of inter-provincial ultra-high voltage transmission channels.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, the present invention provides a method for compensating for transmission capacity reduction based on time-of-use opportunity cost variations, comprising:

[0006] Obtain the actual load curve of the transmission channel to be compensated; convert the actual load curve into a continuous load curve;

[0007] Calculate the total transmission cost at each time point based on the continuous load curve;

[0008] Calculate the opportunity cost for each time period based on the continuous load curve;

[0009] The route reduction compensation for each time period is obtained based on the opportunity cost of each time period;

[0010] Output the line reduction compensation for each time period.

[0011] A further improvement of this invention is that the step of obtaining the actual load curve of the transmission channel to be compensated and converting the actual load curve into a continuous load curve specifically includes:

[0012] Obtain the actual annual line load curves of the transmission channel to be compensated; convert the obtained actual annual line load curves into continuous load curves by arranging them in ascending order.

[0013] A further improvement of the present invention is that the step of calculating the total transmission cost at each moment based on the continuous load curve includes:

[0014] Determine the duration corresponding to each load level to obtain the electricity consumption per hour:

[0015] E i =Δt×P i

[0016] P i E represents the load at time i. i Indicates load P i The amount of electricity generated per unit time Δt is accumulated at times with the same load level.

[0017] The total power consumption is divided into horizontal and vertical segments to calculate smaller power consumption blocks; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption E... j Vertical decomposition and dicing:

[0018] E j =E j,j +E j,j-1 +…E j,1

[0019] Where E j,j Indicates the amount of electricity E j The middle part belongs only to the load section P j-1 To P j The amount of electricity is represented by j, which indicates the number of different load levels; P is used to represent the amount of electricity. j This represents the load at the j-th load level; using E j Indicates load P j At time t j The corresponding total power, t j This represents the time of the j-th load level;

[0020] Define small energy block E m,n This represents a block of electrical charge after a certain division, where n∈[1,j], m∈[n,j]; at this time, E m,n Indicates the amount of electricity E m The middle only belongs to the load P n-1 To P n The amount of electricity; electricity E m,n The total amount of electricity accumulated horizontally is E n , is represented as:

[0021]

[0022] n≤m≤j

[0023] 1≤n≤j

[0024] Assume Ej The allocated capacity cost is F. j Vertical cumulative power E m The allocated capacity cost is F. m m∈[1,j];

[0025] The average capacity cost per unit load, ΔF, is calculated by distributing the total capacity cost evenly across the total load.

[0026]

[0027] When calculating costs, a horizontal-then-vertical approach is adopted, starting with E. m,n The charges are added horizontally to obtain the charge E. n Attributed to electricity E n Total capacity cost F n Represented as:

[0028] F n =(P n -P n-1 )ΔF

[0029] Belongs to E m,n Corresponding capacity cost F m,n for:

[0030]

[0031] Battery E m,n The electric charge E is obtained by adding them vertically. m The corresponding capacity cost F m Represented as:

[0032]

[0033] The total transmission cost of the line at each time point is:

[0034] F = F t +F c P t Δt

[0035] Where P t F represents the load at time t, where Δt is the duration of the corresponding load. c For the marginal cost of the line, F t This represents the capacity cost of the line at various times.

[0036] A further improvement of the present invention is that the step of calculating the opportunity cost for each time period based on the continuous load curve specifically includes:

[0037] The line load is segmented and its time-of-use average transmission cost F′ is calculated.

[0038] The opportunity cost R for each time period is:

[0039] R=θF′

[0040] Where θ is the allowable rate of return for the transmission line.

[0041] A further improvement of this invention is that: in the step of obtaining the line reduction compensation for each time period based on the opportunity cost of each time period, the line reduction compensation for each time period is as follows:

[0042]

[0043] Among them, P max P represents the system's maximum load. t It is the load at time t.

[0044] Secondly, the present invention provides a transmission capacity reduction compensation system based on time-of-use opportunity cost changes, comprising:

[0045] The acquisition module is used to acquire the actual load curve of the transmission channel to be compensated; and convert the actual load curve into a continuous load curve.

[0046] The first calculation module is used to calculate the total transmission cost at each time point based on the continuous load curve.

[0047] The second calculation module is used to calculate the opportunity cost for each time period based on the continuous load curve.

[0048] The third calculation module is used to obtain the line reduction compensation for each time period based on the opportunity cost of each time period.

[0049] The output module is used to output the line reduction compensation for each time period.

[0050] A further improvement of this invention is that: the acquisition module acquires the actual load curve of the transmission channel to be compensated; the step of converting the actual load curve into a continuous load curve specifically includes:

[0051] Obtain the actual annual line load curves of the transmission channel to be compensated; convert the obtained actual annual line load curves into continuous load curves by arranging them in ascending order.

[0052] The steps of the first calculation module in calculating the total transmission cost at each time point based on the continuous load curve include:

[0053] Determine the duration corresponding to each load level to obtain the electricity consumption per hour:

[0054] E i =Δt×P i

[0055] Pi E represents the load at time i. i Indicates load P i The amount of electricity generated per unit time Δt is accumulated at times with the same load level.

[0056] The total power consumption is divided into horizontal and vertical segments to calculate smaller power consumption blocks; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption E... j Vertical decomposition and dicing:

[0057] E j =E j,j +E j,j-1 +…E j,1

[0058] Where E j,j Indicates the amount of electricity E j The middle part belongs only to the load section P j-1 To P j The amount of electricity is represented by j, which indicates the number of different load levels; P is used to represent the amount of electricity. j This represents the load at the j-th load level; using E j Indicates load P j At time t j The corresponding total power, t j This represents the time of the j-th load level;

[0059] Define small energy block E m,n This represents a block of electrical charge after a certain division, where n∈[1,j], m∈[n,j]; at this time, E m,n Indicates the amount of electricity E m The middle only belongs to the load P n-1 To P n The amount of electricity; electricity E m,n The total amount of electricity accumulated horizontally is E n , is represented as:

[0060]

[0061] n≤m≤j

[0062] 1≤n≤j

[0063] Assume E j The allocated capacity cost is F. j Vertical cumulative power E m The allocated capacity cost is F. m m∈[1,j];

[0064] The average capacity cost per unit load, ΔF, is calculated by distributing the total capacity cost evenly across the total load.

[0065]

[0066] When calculating costs, a horizontal-then-vertical approach is adopted, starting with E. m,n The charges are added horizontally to obtain the charge E. n Attributed to electricity E n Total capacity cost F n Represented as:

[0067] F n =(P n -P n-1 )ΔF

[0068] Belongs to E m,n Corresponding capacity cost F m,n for:

[0069]

[0070] Battery E m,n The electric charge E is obtained by adding them vertically. m The corresponding capacity cost F m Represented as:

[0071]

[0072] The total transmission cost of the line at each time point is:

[0073] F = F t +F c P t Δt

[0074] Where P t F represents the load at time t, where Δt is the duration of the corresponding load. c For the marginal cost of the line, F t This represents the capacity cost of the line at various times.

[0075] A further improvement of the present invention is that the step of the second calculation module calculating the opportunity cost for each time period based on the continuous load curve specifically includes:

[0076] The line load is segmented and its time-of-use average transmission cost F′ is calculated.

[0077] The opportunity cost R for each time period is:

[0078] R=θF′

[0079] Where θ is the allowable rate of return for the transmission line;

[0080] In the third calculation module, the line reduction compensation for each time period is calculated based on the opportunity cost of that time period. The line reduction compensation for each time period is as follows:

[0081]

[0082] Among them, P max P represents the system's maximum load. t It is the load at time t.

[0083] Thirdly, the present invention provides an electronic device comprising a processor and a memory, the processor being configured to execute a computer program stored in the memory to implement the aforementioned transmission capacity reduction compensation method based on time-of-use opportunity cost variation.

[0084] Fourthly, the present invention provides a computer-readable storage medium, characterized in that the computer-readable storage medium stores at least one instruction, which, when executed by a processor, implements the transmission capacity reduction compensation method based on time-sharing opportunity cost variation as described in any one of claims 1 to 5.

[0085] Compared with the prior art, the present invention has the following beneficial effects:

[0086] This invention provides a method and system for compensating for transmission capacity reduction based on time-of-use opportunity cost changes. By calculating the time-of-use transmission cost and opportunity cost of inter-provincial transmission channel capacity in different seasons and time periods throughout the year, as well as the change in the probability of idle transmission capacity over time, the capacity value of inter-provincial transmission channels in each time period can be obtained. The opportunity cost lost after reducing transmission capacity at each time point can be calculated, and this can be used as the basis for capacity reduction compensation. This helps power grid companies to rationally and efficiently utilize transmission channels, improve the utilization rate of inter-provincial ultra-high voltage channels, prevent unnecessary waste, and promote the optimal allocation of power resources. Attached Figure Description

[0087] The accompanying drawings, which form part of this specification, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0088] Figure 1 This is a schematic flowchart of a transmission capacity reduction compensation method based on time-of-use opportunity cost changes according to the present invention.

[0089] Figure 2 This is a schematic diagram of the annual load curve of a certain line;

[0090] Figure 3 This is a schematic diagram showing the calculation results of annual time-of-use transmission costs.

[0091] Figure 4 A horizontal comparison chart of transmission costs for each month;

[0092] Figure 5(a) shows the calculation results of the daily average time-sharing cost in May; Figure 5(b) shows the calculation results of the daily average time-sharing cost in August;

[0093] Figure 6 This is a flowchart illustrating a transmission capacity reduction compensation method based on time-of-use opportunity cost changes according to another embodiment of the present invention.

[0094] Figure 7 This is a structural block diagram of a transmission capacity reduction compensation system based on time-sharing opportunity cost variation according to the present invention.

[0095] Figure 8 This is a structural block diagram of an electronic device according to the present invention. Detailed Implementation

[0096] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0097] The following detailed description is exemplary and intended to provide further detailed explanation of the invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in this invention is for describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention.

[0098] Given the deepening of power market reform and the escalating challenges of cross-regional and cross-provincial power grids undertaking large-scale resource optimization, this study investigates a flexible reduction mechanism for inter-provincial transmission channels based on power curves. This mechanism calculates the changes in inter-provincial transmission channel capacity under different time periods and channel utilization rates, considering capacity cost, capacity idle probability, and capacity opportunity cost as the basis for compensation for capacity reduction. It also provides a reasonable compensation method for inter-provincial transmission channel capacity reduction.

[0099] Example 1

[0100] Please see Figure 1 As shown, to achieve a method for compensating for transmission channel capacity reduction and improve the allocation efficiency of transmission capacity resources, this invention provides a method for compensating for transmission capacity reduction based on time-of-use opportunity cost changes, comprising the following steps:

[0101] Step S101: Convert the actual load curve into a continuous load curve. Obtain the time-series load curve of a transmission line, i.e., the actual line load curve for the whole year; convert the obtained time-series load curve of the transmission line, i.e., the actual line load curve for the whole year, into a continuous load curve in ascending order, and determine the duration corresponding to each load level. The unit of time scale is Δt = 1h, then ti represents the i-th hour (1 ≤ i ≤ 8760h), P i Let represent the load at time i. Then, the electricity consumption for each hour is obtained:

[0102] E i =Δt×P i

[0103] E i Indicates load P i The amount of electricity generated per unit time Δt; since there may be scenarios where a certain load level lasts for several hours, the times with the same load level can be accumulated.

[0104] Step S102: Divide the total power consumption into horizontal and vertical segments and calculate the smaller power consumption blocks. Assume Fmax represents the total system capacity cost and Pmax represents the system's maximum load. At this point, the power consumption E... j The process involves vertical decomposition and dicing, with the number of diced blocks determined by the quantity j.

[0105] E j =E j,j +E j,j-1 +…E j,1

[0106] Where E j,j Indicates the amount of electricity E j The middle part belongs only to the load section P j-1 To P j The electricity consumption is reduced from 8760 time points (i = 8760) to j points, where j represents the number of different load levels (1 ≤ j < 8760); using E... j Indicates load P j At time t j The corresponding total power, t j This represents the time for the j-th load level.

[0107] Similarly, it can be seen that, from a horizontal perspective, there exists a quantity E. 1,1 E 2,1 Until E j,1 For ease of calculation, a small energy block E is defined. m,n Let E represent a block of electrical charge after a certain division, where n∈[1,j] and m∈[n,j]. At this time, E... m,n Indicates the amount of electricity E m The middle only belongs to the load P n-1 To P nThe battery level. And the battery level E m,n The total amount of electricity accumulated horizontally is E n , can be represented as:

[0108]

[0109] n≤m≤j

[0110] 1≤n≤j

[0111] Step S103: Calculate the capacity cost to be allocated to the divided power blocks. Assume E j The allocated capacity cost is F. j Vertical cumulative power E m The allocated capacity cost is F. m ,m∈[1,j]. The core content of this invention lies in calculating the charge E of each block. m,n The corresponding capacity cost.

[0112] First, calculate the average capacity cost per unit load ΔF, which is obtained by distributing the total capacity cost evenly across the total load:

[0113]

[0114] When calculating costs, a horizontal-then-vertical approach is adopted, starting with E. m,n The charges are added horizontally to obtain the charge E. n Attributed to electricity E n Total capacity cost F n Represented as:

[0115] F n =(P n -P n-1 )ΔF

[0116] Then it belongs to E m,n Corresponding capacity cost F m,n for:

[0117]

[0118] Step S104: Calculate the capacity cost to be allocated to different loads after the energy blocks are accumulated. Energy E m,n The electric charge E is obtained by adding them vertically. m The corresponding capacity cost F m It can be represented as:

[0119]

[0120] Since m∈[1,j], therefore each charge E j The capacity cost to be allocated F j The values ​​of each load P are calculated using this method.j The corresponding allocated capacity cost can be obtained. The result calculated using this method is related not only to the load level but also to the duration of the load. This is fundamentally different from the result obtained by allocating costs proportionally based on transmission equipment capacity and time period.

[0121] Step S105: Calculate the total transmission cost of the line at each time point. First, the loads P are known. j By matching the capacity cost allocation scale with the actual load curve of the line, the capacity cost F of the line at each time point can be obtained. t Meanwhile, it is assumed that the marginal cost of the line, such as line loss and maintenance costs, is F. c Then the total transmission cost of the line at each time point can be obtained:

[0122] F T =F t +F c P t Δt

[0123] Where P t Δt represents the load at time t, and Δt represents the duration of that load.

[0124] Step S106: Segment the line load and calculate its time-of-use average transmission cost. Currently, the calculated time-of-use transmission cost is the transmission cost for 8760 hours per year, which is difficult to implement in actual transactions. Therefore, this invention provides a simplified time-of-use division. The division can be based on the peak-valley time-of-use division methods provided by each province, or the typical power trading curve division method given by the trading center. After the division is completed, the average transmission cost for each time period can be calculated. That is, the time-time cost F belonging to the same time period. T The average cost. Because the load variation of transmission lines exhibits significant seasonal characteristics, the average cost can be calculated separately for each month or season.

[0125] Step S107: Calculate the reasonable revenue of the transmission line in each time period. The source of compensation for transmission channel reduction is the opportunity cost of transmission capacity, which is the reasonable revenue that the capacity could potentially obtain. Due to capacity reduction, capacity becomes idle and fails to obtain the due revenue, therefore, certain compensation is required. The basis for compensation is the allowable revenue of the line. According to the relevant policies of the transmission and distribution pricing method, the source of allowable revenue is the allowable cost of the line multiplied by the allowable rate of return. Therefore, assuming the allowable rate of return of the transmission line is θ, the opportunity cost, i.e., the reasonable revenue R, of the transmission line in each time period should be:

[0126] R=θF′

[0127] Step S108: Calculate the reduction compensation fee based on the line's idle probability. The opportunity cost of the line for each time period is known, but after the reduction is implemented, the line may still be traded, allowing for secondary capacity utilization. If reduction compensation is still charged after secondary utilization, double charging will occur. Therefore, the concept of line idle probability is introduced, and reduction compensation is calculated based on the line's possible idle probability for that time period. The calculation method for the line reduction compensation R′ for each time period is as follows:

[0128]

[0129] This capacity opportunity cost takes into account three factors simultaneously. First, the transmission cost of different capacities, considering the cost difference between peak and off-peak capacity under different loads; second, the idle probability of line capacity at different times, where the higher the idle probability, the higher the compensation cost required for capacity reduction; and finally, the opportunity cost parameter, where the cost to be paid after reduction is not the grid's transmission cost, but the opportunity cost of the grid's investment in transmission capacity, i.e., the potential revenue from its transmission services.

[0130] Example 2

[0131] To achieve transmission channel capacity reduction compensation and improve the allocation efficiency of transmission capacity resources, this invention provides the following technical solution: a transmission capacity reduction compensation method based on time-of-use opportunity cost changes, comprising the following steps:

[0132] S201, please refer to Figure 2 As shown, the annual load curve of an inter-provincial power transmission channel is selected as data, and calculations are performed under the premise that its technical parameters and investment costs are known.

[0133] S202, please refer to Figure 3 As shown, the time-of-use transmission cost is calculated based on the average daily load curve for each month, meaning that the daily load curve and time-of-use transmission cost curve are the same within each month.

[0134] Simultaneously, the transmission cost calculation results for each month are compared, and the time-of-use transmission cost for a typical month's 24 hours is displayed as follows: Figure 4 As shown in Figures 5(a) and 5(b), the calculation results of the average daily time-sharing cost in May and August are shown in Figure 5(a) and Figure 5(b).

[0135] S203. Based on the criteria for dividing peak, flat, and valley periods, the monthly 24-hour transmission cost of the inter-provincial lines is converted into the transmission cost during peak, flat, and valley periods, and the calculation results for a typical month are shown below:

[0136] Table 1. Calculation Results of Time-of-Day Transmission Costs in Spring and Autumn

[0137]

[0138] Table 2. Calculation Results of Transmission Costs by Time of Day in Winter and Summer

[0139]

[0140]

[0141] S204. According to the power transmission and distribution pricing method, the return on equity capital is determined by adding no more than 4 percentage points to the average yield of 10-year national treasury bonds from January 1 to June 30 of the year preceding the current regulatory cycle. The return on debt capital is determined by referring to the relevant regulations on the benchmark interest rate for RMB loans during the same period and the actual financing structure and borrowing rates of power grid companies. A provisional 10% is taken as the permissible return rate. Considering the probability of idle line capacity in each time period, the compensation fee for capacity reduction in each season and time period is as follows:

[0142] Table 3. Calculation Results of Time-of-Day Transmission Costs in Spring and Autumn

[0143]

[0144] Table 4. Calculation Results of Transmission Costs in Winter and Summer Seasons

[0145]

[0146] Example 3

[0147] Please see Figure 6 As shown, the present invention provides a transmission capacity reduction compensation method based on time-of-use opportunity cost changes, comprising:

[0148] S1. Obtain the actual load curve of the transmission channel to be compensated; convert the actual load curve into a continuous load curve.

[0149] S2. Calculate the total transmission cost at each time point based on the continuous load curve;

[0150] S3. Calculate the opportunity cost for each time period based on the continuous load curve.

[0151] S4. Obtain route reduction compensation for each time period based on the opportunity cost of each time period;

[0152] S5. Output the line reduction compensation for each time period.

[0153] In one specific embodiment, the step of obtaining the actual load curve of the transmission channel to be compensated and converting the actual load curve into a continuous load curve specifically includes:

[0154] Obtain the actual annual line load curves of the transmission channel to be compensated; convert the obtained actual annual line load curves into continuous load curves by arranging them in ascending order.

[0155] In one specific embodiment, the step of calculating the total transmission cost at each time point based on the continuous load curve includes:

[0156] Determine the duration corresponding to each load level to obtain the electricity consumption per hour:

[0157] E i =Δt×P i

[0158] E i Indicates load P i The amount of electricity generated per unit time Δt; since there may be scenarios where a certain load level lasts for several hours, the times with the same load level can be accumulated.

[0159] The total power consumption is divided into horizontal and vertical segments to calculate smaller power consumption blocks; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption E... j Vertical decomposition and dicing:

[0160] E j =E j,j +E j,j-1 +…E j,1

[0161] Where E j,j Indicates the amount of electricity E j The middle part belongs only to the load section P j-1 To P j The amount of electricity; accumulating the time points with the same load level, reducing i = 8760 time points to j, where j represents the number of different load levels (1 ≤ j < 8760); using E j Indicates load P j At time t j The corresponding total power, t j This represents the time of the j-th load level;

[0162] Define small energy block E m,n This represents a block of electrical charge after a certain division, where n∈[1,j], m∈[n,j]; at this time, E m,n Indicates the amount of electricity E m The middle only belongs to the load P n-1 To P n The amount of electricity; electricity E m,n The total amount of electricity accumulated horizontally is E n , is represented as:

[0163]

[0164] n≤m≤j

[0165] 1≤n≤j

[0166] Assume Ej The allocated capacity cost is F. j Vertical cumulative power E m The allocated capacity cost is F. m m∈[1,j];

[0167] The average capacity cost per unit load, ΔF, is calculated by distributing the total capacity cost evenly across the total load.

[0168]

[0169] When calculating costs, a horizontal-then-vertical approach is adopted, starting with E. m,n The charges are added horizontally to obtain the charge E. n Attributed to electricity E n Total capacity cost F n Represented as:

[0170] F n =(P n -P n-1 )ΔF

[0171] Belongs to E m,n Corresponding capacity cost F m,n for:

[0172]

[0173] Battery E m,n The electric charge E is obtained by adding them vertically. m The corresponding capacity cost F m Represented as:

[0174]

[0175] The total transmission cost of the line at each time point is:

[0176] F = F t +F c P t Δt

[0177] Where P t F represents the load at time t, where Δt is the duration of the corresponding load. c For the marginal cost of the line, F t This represents the capacity cost of the line at various times.

[0178] In one specific embodiment, the step of calculating the opportunity cost for each time period based on the continuous load curve specifically includes:

[0179] The line load is segmented and its time-of-use average transmission cost F′ is calculated.

[0180] The opportunity cost R for each time period is:

[0181] R=θF′

[0182] Where θ is the allowable rate of return for the transmission line.

[0183] In one specific implementation, in the step of obtaining the line reduction compensation for each time period based on the opportunity cost of each time period, the line reduction compensation for each time period is as follows:

[0184]

[0185] Among them, P max P represents the system's maximum load. t It is the load at time t.

[0186] Example 4

[0187] Please see Figure 7 As shown, the present invention provides a transmission capacity reduction compensation system based on time-of-use opportunity cost variation, comprising:

[0188] The acquisition module is used to acquire the actual load curve of the transmission channel to be compensated; and convert the actual load curve into a continuous load curve.

[0189] The first calculation module is used to calculate the total transmission cost at each time point based on the continuous load curve.

[0190] The second calculation module is used to calculate the opportunity cost for each time period based on the continuous load curve.

[0191] The third calculation module is used to obtain the line reduction compensation for each time period based on the opportunity cost of each time period.

[0192] The output module is used to output the line reduction compensation for each time period.

[0193] In one specific embodiment, the acquisition module acquires the actual load curve of the transmission channel to be compensated; the step of converting the actual load curve into a continuous load curve specifically includes:

[0194] Obtain the actual annual line load curves of the transmission channel to be compensated; convert the obtained actual annual line load curves into continuous load curves by arranging them in ascending order.

[0195] The steps of the first calculation module in calculating the total transmission cost at each time point based on the continuous load curve include:

[0196] Determine the duration corresponding to each load level to obtain the electricity consumption per hour:

[0197] E i =Δt×Pi

[0198] E i Indicates load P i The amount of electricity generated per unit time Δt; since there may be scenarios where a certain load level lasts for several hours, the times with the same load level can be accumulated;

[0199] The total power consumption is divided into horizontal and vertical segments to calculate smaller power consumption blocks; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption E... j Vertical decomposition and dicing:

[0200] E j =E j,j +E j,j-1 +…E j,1

[0201] Where E j,j Indicates the amount of electricity E j The middle part belongs only to the load section P j-1 To P j The amount of electricity; accumulating the time points with the same load level, reducing i = 8760 time points to j, where j represents the number of different load levels (1 ≤ j < 8760); using E j Indicates load P j At time t j The corresponding total power, t j This represents the time of the j-th load level;

[0202] Define small energy block E m,n This represents a block of electrical charge after a certain division, where n∈[1,j], m∈[n,j]; at this time, E m,n Indicates the amount of electricity E m The middle only belongs to the load P n-1 To P n The amount of electricity; electricity E m,n The total amount of electricity accumulated horizontally is E n , is represented as:

[0203]

[0204] n≤m≤j

[0205] 1≤n≤j

[0206] Assume E j The allocated capacity cost is F. j Vertical cumulative power E m The allocated capacity cost is F. m m∈[1,j];

[0207] The average capacity cost per unit load, ΔF, is calculated by distributing the total capacity cost evenly across the total load.

[0208]

[0209] When calculating costs, a horizontal-then-vertical approach is adopted, starting with E. m,n The charges are added horizontally to obtain the charge E. n Attributed to electricity E n Total capacity cost F n Represented as:

[0210] F n =(P n -P n-1 )ΔF

[0211] Belongs to E m,n Corresponding capacity cost F m,n for:

[0212]

[0213] Battery E m,n The electric charge E is obtained by adding them vertically. m The corresponding capacity cost F m Represented as:

[0214]

[0215] The total transmission cost of the line at each time point is:

[0216] F = F t +F c P t Δt

[0217] Where P t F represents the load at time t, where Δt is the duration of the corresponding load. c For the marginal cost of the line, F t This represents the capacity cost of the line at various times.

[0218] In one specific implementation, the step of the second calculation module calculating the opportunity cost for each time period based on the continuous load curve specifically includes:

[0219] The line load is segmented and its time-of-use average transmission cost F′ is calculated.

[0220] The opportunity cost R for each time period is:

[0221] R=θF′

[0222] Where θ is the allowable rate of return for the transmission line;

[0223] In the third calculation module, the line reduction compensation for each time period is calculated based on the opportunity cost of that time period. The line reduction compensation for each time period is as follows:

[0224]

[0225] Among them, P max P represents the system's maximum load. t It is the load at time t.

[0226] Example 5

[0227] Please see Figure 3 As shown, the present invention also provides an electronic device 100 for implementing the transmission capacity reduction compensation method based on time-of-use opportunity cost variation; the electronic device 100 includes a memory 101, at least one processor 102, a computer program 103 stored in the memory 101 and executable on the at least one processor 102, and at least one communication bus 104.

[0228] The memory 101 can be used to store the computer program 103. The processor 102 implements the transmission capacity reduction compensation method based on time-of-use opportunity cost changes described in Embodiments 1, 2, or 3 by running or executing the computer program stored in the memory 101 and calling the data stored in the memory 101. The memory 101 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, at least one application program required for a function (such as sound playback function, image playback function, etc.), etc.; the data storage area may store data created according to the use of the electronic device 100 (such as audio data), etc. In addition, the memory 101 may include non-volatile memory, such as hard disk, memory, plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, at least one disk storage device, flash memory device, or other non-volatile solid-state storage device.

[0229] The at least one processor 102 may be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The processor 102 may be a microprocessor or any conventional processor. The processor 102 is the control center of the electronic device 100, connecting various parts of the electronic device 100 via various interfaces and lines.

[0230] The memory 101 in the electronic device 100 stores multiple instructions to implement a transmission capacity reduction compensation method based on time-sharing opportunity cost changes, and the processor 102 can execute the multiple instructions to achieve the following:

[0231] Obtain the actual load curve of the transmission channel to be compensated; convert the actual load curve into a continuous load curve;

[0232] Calculate the total transmission cost at each time point based on the continuous load curve;

[0233] Calculate the opportunity cost for each time period based on the continuous load curve;

[0234] The route reduction compensation for each time period is obtained based on the opportunity cost of each time period;

[0235] Output the line reduction compensation for each time period.

[0236] Example 6

[0237] If the modules / units integrated in the electronic device 100 are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include: any entity or device capable of carrying the computer program code, a recording medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, and a read-only memory (ROM).

[0238] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0239] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0240] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0241] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0242] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A method for compensating for transmission capacity reduction based on time-of-use opportunity cost variations, characterized in that, include: Obtain the actual load curve of the transmission channel to be compensated; Transform the actual load curve into a continuous load curve; Calculate the total transmission cost at each time point based on the continuous load curve; Calculate the opportunity cost for each time period based on the continuous load curve; The route reduction compensation for each time period is obtained based on the opportunity cost of each time period; Output the line reduction compensation for each time period; The step of calculating the total transmission cost at each time point based on the continuous load curve includes: Determine the duration corresponding to each load level to obtain the electricity consumption per hour: P i This represents the load at time i. Indicates load P i The amount of electricity generated per unit time Δt is accumulated at times with the same load level. The total power consumption is divided into horizontal and vertical segments, and small power consumption blocks are calculated; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption... Vertical decomposition and dicing: in Indicates battery level The middle section belongs only to the load section arrive The amount of electricity, denoted by j, represents the number of different load levels; using This represents the load at the j-th load level; using Indicates load In time The corresponding total power consumption, This represents the time for the j-th load level; Define small power blocks This represents a block of electrical charge after a certain division, where ;at this time Indicates battery level The middle only belongs to the load arrive Battery level; battery level The total power consumption accumulated horizontally is , represented as: Assumption The capacity cost to be allocated is Vertically accumulated power The capacity cost to be allocated is , ; Calculate the average capacity cost per unit load This is derived by distributing the total capacity cost evenly across the total load: Costs are calculated using a horizontal-then-vertical approach, starting with... Add them side by side to get the amount of electricity. Attributable to electricity Total capacity cost Represented as: Belonging to Corresponding capacity cost for: Battery The amount of electricity is obtained by adding them vertically. Corresponding capacity cost Represented as: The total transmission cost of the line at each time point is: t in It is the load at time t. t represents the duration of the corresponding load. For the marginal cost of the line, The capacity cost of the line at various times; The step of calculating the opportunity cost for each time period based on the continuous load curve specifically includes: The line load is segmented and its time-of-use average transmission cost is calculated. ; The opportunity cost R for each time period is: in, This is the allowable rate of return for the transmission line.

2. The transmission capacity reduction compensation method based on time-of-use opportunity cost variation according to claim 1, characterized in that, The actual load curve of the transmission channel to be compensated is obtained; The step of converting the actual load curve into a continuous load curve specifically includes: Obtain the actual annual line load curves of the transmission channels to be compensated; The obtained annual real line load curves are converted into continuous load curves by arranging them in ascending order.

3. The transmission capacity reduction compensation method based on time-of-use opportunity cost variation according to claim 1, characterized in that, In the step of obtaining the line reduction compensation for each time period based on the opportunity cost of each time period, the line reduction compensation for each time period... for: Among them, P max This represents the system's maximum load. It is the load at time t.

4. A transmission capacity reduction compensation system based on time-of-use opportunity cost variation, characterized in that, include: The acquisition module is used to acquire the actual load curve of the transmission channel to be compensated; Transform the actual load curve into a continuous load curve; The first calculation module is used to calculate the total transmission cost at each time point based on the continuous load curve. The second calculation module is used to calculate the opportunity cost for each time period based on the continuous load curve. The third calculation module is used to obtain the line reduction compensation for each time period based on the opportunity cost of each time period. The output module is used to output the line reduction compensation for each time period; The steps of the first calculation module in calculating the total transmission cost at each time point based on the continuous load curve include: Determine the duration corresponding to each load level to obtain the electricity consumption per hour: AND i =Δt×P i P i This represents the load at time i. Indicates load P i The amount of electricity generated per unit time Δt is accumulated at times with the same load level. The total power consumption is divided into horizontal and vertical segments, and small power consumption blocks are calculated; Fmax represents the total system capacity cost, and Pmax represents the maximum system load; the power consumption... Vertical decomposition and dicing: in Indicates battery level The middle section belongs only to the load section arrive The amount of electricity, denoted by j, represents the number of different load levels; using This represents the load at the j-th load level; using Indicates load In time The corresponding total power consumption, This represents the time for the j-th load level; Define small power blocks This represents a block of electrical charge after a certain division, where ;at this time Indicates battery level The middle only belongs to the load arrive Battery level; battery level The total power consumption accumulated horizontally is , represented as: Assumption The capacity cost to be allocated is Vertically accumulated power The capacity cost to be allocated is , ; Calculate the average capacity cost per unit load This is derived by distributing the total capacity cost evenly across the total load: Costs are calculated using a horizontal-then-vertical approach, starting with... Add them side by side to get the amount of electricity. Attributable to electricity Total capacity cost Represented as: Belonging to Corresponding capacity cost for: Battery The amount of electricity is obtained by adding them vertically. Corresponding capacity cost Represented as: The total transmission cost of the line at each time point is: t in It is the load at time t. t represents the duration of the corresponding load. For the marginal cost of the line, The capacity cost of the line at various times; The second calculation module calculates the opportunity cost for each time period based on the continuous load curve, specifically including: The line load is segmented and its time-of-use average transmission cost is calculated. ; The opportunity cost R for each time period is: in, This is the allowable rate of return for the transmission line.

5. The transmission capacity reduction compensation system based on time-of-use opportunity cost variation according to claim 4, characterized in that, The acquisition module obtains the actual load curve of the transmission channel to be compensated; The step of converting the actual load curve into a continuous load curve specifically includes: Obtain the actual annual line load curves of the transmission channels to be compensated; The obtained annual real line load curves are converted into continuous load curves by arranging them in ascending order.

6. The transmission capacity reduction compensation system based on time-of-use opportunity cost variation according to claim 4, characterized in that, In the third calculation module, the line reduction compensation for each time period is calculated based on the opportunity cost of that time period. The line reduction compensation for each time period is as follows: Among them, P max This represents the system's maximum load. It is the load at time t.

7. An electronic device, characterized in that, The electronic device includes a processor and a memory, the processor being used to execute a computer program stored in the memory to implement the transmission capacity reduction compensation method based on time-of-use opportunity cost variation as described in any one of claims 1 to 3.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one instruction, which, when executed by a processor, implements the transmission capacity reduction compensation method based on time-of-use opportunity cost variation as described in any one of claims 1 to 3.

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