Peak shifting clearing method and device based on net load peak time difference and storage medium

Abstract

The invention relates to an off-peak clearing method and device based on a net load peak time difference and a storage medium, which are applied to the technical field of power transaction, and the method comprises the steps: building an initial power distribution matrix and an off-peak matrix of a sending end province and each receiving end province, and enabling the off-peak matrix to comprise off-peak power of each receiving end province in a net load peak time period; solving a peak shifting matrix by establishing a constraint condition and a target function to obtain peak shifting power of each receiving end province in a net load peak period, and establishing a final power distribution matrix by using the initial power distribution matrix and the peak shifting power; according to the method, the difference of the peak time periods of the net loads of the receiving end provinces is utilized, the hour-level power supply insurance resources are deeply excavated, the transaction power values of the peak time periods of the net loads of the power purchasing provinces are finely adjusted, accurate peak shifting mutual aid is formed, the power supply gap of a local area is effectively reduced, and the power supply insurance toughness of the whole network is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power trading, and in particular to a peak-shifting clearing method, device and storage medium based on net load peak time difference. Background Art

[0002] At present, inter-provincial power resources are allocated in a market-oriented manner based on the principle of "medium- and long-term basis, spot surplus and shortage mutual assistance, and emergency dispatch and rescue", and transaction costs and average prices have risen successively. The inter-provincial medium- and long-term market is positioned to promote the medium- and long-term optimization of inter-provincial power resources, and plays a key role in stabilizing expectations, avoiding risks, and guiding investment. Inter-provincial medium- and long-term transaction electricity accounts for about 95% of inter-provincial transaction electricity, which is the "ballast stone" and "price stabilizer" to ensure power supply. The inter-provincial spot market is positioned to promote the short-term optimization of inter-provincial power resources. Especially when power supply and demand are tight or emergencies occur, the power system can respond quickly, flexibly dispatch power resources, and achieve short-term and efficient allocation. Therefore, it mainly undertakes the function of inter-provincial surplus and shortage mutual assistance. Although inter-provincial spot transactions can play the role of inter-provincial surplus and shortage mutual assistance, there are risks such as spot resources and price uncertainty, which is not conducive to the early stabilization of expectations of power purchasing provinces. At the same time, the frequency of spot transactions is much higher than that of medium- and long-term transactions, and the transaction costs are high.

[0003] The existing medium- and long-term transactions between provinces pay more attention to the balance of electricity supply and demand, and the shape of the electricity curve is relatively simple and rough, with one value for the whole day or one value for each time period. The curve fails to be arranged by hour or finer time scales (especially during the day when supply and demand are tight). The exploration of electricity supply resources is not detailed and sufficient, and the role of surplus and shortage cannot be played during the peak electricity consumption periods in various provinces, which is not conducive to the safe operation of the power grid. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a peak-shaving clearing method, device and storage medium based on the net load peak time difference, so as to solve the problem in the prior art that medium- and long-term transactions between provinces pay more attention to the balance of electricity supply and demand, while the shape of the electricity curve is relatively simple and rough, with one value for the whole day or one value for each time period, and the curve cannot be arranged on an hourly or finer time scale. The mining of power supply resources is not detailed and sufficient, and the role of surplus and shortage cannot be played during the peak electricity consumption periods in each province, which is not conducive to the safe operation of the power grid.

[0005] According to a first aspect of an embodiment of the present invention, a peak-shift clearing method based on a net load peak time difference is provided, the method comprising:

[0006] Obtain the total power transmitted from the sending end province to one or more receiving end provinces in each time period, and obtain the net load peak time period of the one or more receiving end provinces;

[0007] An initial power distribution matrix is ​​established by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces;

[0008] A peak shifting matrix is ​​established by using the peak-shifting power received by any receiving province from other receiving provinces during its own net load peak period;

[0009] The objective function is established with the goal of maximizing the total amount of off-peak power in each receiving province during its own net load peak period;

[0010] Establishing constraint conditions for solving the peak shifting matrix;

[0011] Under the condition that the constraint conditions are met, the peak shifting matrix is ​​solved with the objective function as the solution target to obtain the peak shifting power of each receiving province during its own net load peak period;

[0012] The initial power distribution matrix is ​​superimposed with the peak-shifting power of each receiving province during its own net load peak period to obtain a final power distribution matrix;

[0013] Inter-provincial power clearing is performed according to the final power distribution matrix.

[0014] Preferably, it also includes:

[0015] After obtaining the peak-shifting power of each receiving province during its own net load peak period, the channel ATC verification and the climbing and retreating slope verification are carried out;

[0016] The channel ATC verification includes:

[0017] If the peak-shifting power of any receiving province during its own net load peak period exceeds the available transmission capacity of any transmission channel;

[0018] The peak-shifting power of the receiving province is reduced in proportion until it does not exceed the available transmission capacity of the transmission channel. The proportionally reduced power is transferred on average to the receiving province that reaches the net load peak in the same period and is not constrained by the available transmission capacity of the transmission channel.

[0019] Preferably,

[0020] The climbing and retreating slope verification includes:

[0021] After channel ATC verification, if the slope of the peak-shaving power curve of any receiving province exceeds the net load climbing slope or retreating slope, the peak-shaving power of the receiving province will be reduced until the climbing and retreating slope constraints in the constraints are met, and the reduced peak-shaving power will be returned to other receiving provinces according to the proportion of the power transferred.

[0022] Preferably, it also includes:

[0023] When solving the peak shifting matrix, the net load peak period of each receiving province is taken as a known condition to participate in the calculation.

[0024] Preferably,

[0025] The constraints include:

[0026] Initial power distribution constraints, fairness constraints, and ramp slope constraints;

[0027] The initial power distribution constraint includes: the power transferred by the receiving province shall not exceed the power allocated to it from the sending province;

[0028] The fairness constraints include:

[0029] If the receiving province of the electricity being transferred does not have a positive reserve gap, all the electricity allocated from the sending province will be transferred to other receiving provinces that have reached the peak period of net load;

[0030] If the receiving province of the transferred power has a positive reserve gap, the transferred power shall not exceed the power obtained from the receiving province during its own net load peak period, and the positive reserve after the transfer shall not be less than the positive reserve after the transfer during its own net load peak period;

[0031] The climbing and retreating slope constraints include:

[0032] The climbing slope and falling slope of the peak-shaving curve of peak-shaving power shall not be faster than the climbing slope and falling slope of its own net load curve.

[0033] Preferably, it also includes:

[0034] After obtaining the off-peak power, the peak shift ratio is obtained according to the off-peak power and the theoretical off-peak power upper limit, and the advantages and disadvantages of inter-provincial peak shift transactions are evaluated by the peak shift ratio.

[0035] According to a second aspect of an embodiment of the present invention, a peak-shift clearing device based on a net load peak time difference is provided, the device comprising:

[0036] The sending and receiving end province confirmation module is used to obtain the total power transmitted by the sending end province to one or more receiving end provinces in each time period, and obtain the net load peak time period of the one or more receiving end provinces;

[0037] An initial power distribution matrix acquisition module is used to establish an initial power distribution matrix by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces;

[0038] Peak shifting matrix acquisition module: used to establish a peak shifting matrix with the peak shifting power received by any receiving province from other receiving provinces during its own net load peak period;

[0039] Target acquisition module: used to establish an objective function with the goal of maximizing the total amount of off-peak power of each receiving province during its own net load peak period;

[0040] Constraint establishment module: used to establish the constraint conditions for solving the peak shifting matrix;

[0041] A solution module: used to solve the peak shifting matrix with the objective function as the solution target under the condition that the constraint conditions are met, so as to obtain the peak shifting power of each receiving province during its own net load peak period;

[0042] The final power distribution matrix acquisition module is used to superimpose the initial power distribution matrix with the peak-shifting power of each receiving end during its own net load peak period to obtain the final power distribution matrix;

[0043] Clearing module: used for clearing inter-provincial electricity according to the final power distribution matrix.

[0044] According to a third aspect of an embodiment of the present invention, there is provided a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a main controller, each step in the above method is implemented.

[0045] The technical solution provided by the embodiments of the present invention may have the following beneficial effects:

[0046] The present application establishes an initial power distribution matrix and a peak-shifting matrix between the sending province and each receiving province. The peak-shifting matrix includes the peak-shifting power of each receiving province during the net load peak period. By establishing constraints and objective functions to solve the peak-shifting matrix, the peak-shifting power of each receiving province during the net load peak period is obtained, and the final power distribution matrix is ​​established using the initial power distribution matrix and the peak-shifting power. The present application utilizes the differences in the net load peak periods of each receiving province to deeply explore the hourly power supply resources, and makes fine adjustments to the transaction power values ​​of each power purchasing province during the net load peak period to form precise peak-shifting mutual assistance, effectively reduce the power supply gap in local areas, and enhance the resilience of power supply across the entire network.

[0047] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0049] Figure 1 is a flow chart of a peak-shift clearing method based on net load peak time difference according to an exemplary embodiment;

[0050] Figure 2is a system schematic diagram of a peak-shifting clearing device based on a net load peak time difference according to another exemplary embodiment;

[0051] In the attached figure: 1-sending and receiving end confirmation module, 2-initial power distribution matrix acquisition module, 3-peak-shifting matrix acquisition module, 4-target acquisition module, 5-constraint establishment module, 6-solution module, 7-final power distribution matrix acquisition module, 8-clearing module. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Instead, they are merely examples of devices and methods consistent with some aspects of the present invention as detailed in the appended claims.

[0053] Embodiment 1

[0054] Figure 1 is a flow chart of a peak-shift clearing method based on a net load peak time difference according to an exemplary embodiment. Figure 1 As shown, the method includes:

[0055] S1, obtaining the total power transmitted from the sending province to one or more receiving provinces in each time period, and obtaining the net load peak time period of the one or more receiving provinces;

[0056] S2, establishing an initial power distribution matrix by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces;

[0057] S3, establishing a peak shifting matrix with the peak shifting power received by any receiving province from other receiving provinces during its own net load peak period;

[0058] S4, establishing an objective function with the goal of maximizing the total amount of off-peak power of each receiving province during its own net load peak period;

[0059] S5, establishing constraint conditions for solving the peak shifting matrix;

[0060] S6, when the constraint conditions are met, solving the peak shifting matrix with the objective function as the solution target, and obtaining the peak shifting power of each receiving province during its own net load peak period;

[0061] S7, superimposing the initial power distribution matrix with the peak-shifting power of each receiving province during its own net load peak period to obtain a final power distribution matrix;

[0062] S8, performing inter-provincial power clearing according to the final power distribution matrix;

[0063] It can be understood that inter-provincial peak-shifting transactions based on net load peak time difference (or "power swap mutual assistance") means that when arranging the medium- and long-term power curves between provinces, when the net load of a certain receiving province (sending province) is at a peak, the power received by the receiving province is appropriately increased (or the power sent by the sending province is reduced); when the net load of other receiving provinces (sending provinces) is at a peak, the power received by the receiving province is appropriately reduced (or the power sent by the sending province is increased), or it is called transferring part of the power to the province during the net load peak period; thereby, while keeping the total transaction volume basically unchanged, the hourly power mutual assistance capacity of each province is tapped to alleviate the pressure on power supply in each province, specifically including:

[0064] Initial distribution power:

[0065] The initial power distribution is the power curve intention before the peak shifting. The power distribution ratio between the receiving provinces is determined by bilateral negotiation. It is assumed that the power transmitted by the sending province at each moment is evenly distributed to each receiving province to form the initial power distribution;

[0066] Assume that the six receiving provinces are A1, A2, B1, B2, C1, and C2; among them, A1 and A2 reach their net load peak at time t1, B1 and B2 reach their net load peak at time t2, and C1 and C2 reach their net load peak at time t3 (assuming that t1 <t2<t3);

[0067] It is worth noting that the peak load is shifted only during the net load peak period, and other periods are not shifted; therefore, the net load peak time (or period) must be selected first. This application considers 0.99 to 1 p.u. as the net load peak period (including at least one hour). If it includes multiple consecutive hourly points, the peak period is tstart to tend (all hourly points). Therefore, the t participating in the peak shift should satisfy:

[0068] t start ≤t≤t end

[0069] This application assumes that the provinces participate in peak load shifting at the peak time of net load, that is:

[0070] t start =t end =t

[0071] The peak time of net load of each province participating in peak load shifting is taken as a known condition for subsequent calculations;

[0072] Assume that the power transmitted by the sending province at t1, t2, and t3 is Then the initial power distribution matrices of the six receiving provinces at t1, t2, and t3 are:

[0073]

[0074] Peak shifting matrix:

[0075] When a receiving province is at a peak load period, other provinces centrally transfer power to that province during this period; at time t1, the net loads of A1 and A2 are at a peak, and B1, B2, C1, and C2 transfer power to A1 and A2; similarly, at time t2, the net loads of B1 and B2 are at a peak, and A1, A2, C1, and C2 transfer power to B1 and B2; similarly, at time t3, the net loads of C1 and C2 are at a peak, and A1, A2, B1, and B2 transfer power to C1 and C2. The time-sharing transfer of power (or peak-shifting power) is represented by a matrix (columns are transferred to rows), and the peak-shifting matrix X is obtained:

[0076]

[0077] The transferred power (off-peak power) obtained at the peak time of net load in each province is the positive reserve increase at that time; therefore, the total positive reserve increase at the peak time of net load in each province is the sum of all elements of matrix X, that is:

[0078] ∑x ij

[0079] The essence of inter-provincial power peak shifting transaction clearing based on net load peak time difference is an optimization problem, and the optimization method is used to solve the elements of the peak shifting matrix;

[0080] Objective function:

[0081] The peak-shifting power obtained by each province during the peak period of net load in the province is the increase in the positive reserve of the province during that period. Therefore, the goal is to maximize the sum of the peak-shifting power achieved during the peak period of net load in each province, that is, to sum up all the elements of X:

[0082] max∑x ij

[0083] Constraints:

[0084] Initial power distribution (theoretical peak power limit) constraints:

[0085] x ij ≥0

[0086]

[0087] Fairness constraints:

[0088] The fairness of mutual assistance is the guarantee to mobilize the active participation of all provinces; when there are multiple receiving provinces, the peak-shifting power adopts the principle of equal distribution, and the peak is shifted among the provinces without positive reserve gaps. In principle, equal mutual assistance is provided, and appropriate care is given to the provinces with positive reserve gaps. For the provinces that reach the peak of net load (there may be multiple provinces), other receiving provinces transfer the power of that period to them and distribute it equally to the receiving provinces. The power value transferred by each transferring province is different. The transfer principles are as follows:

[0089] (1) If there is no positive reserve gap, all power will be transferred to the province with the peak net load;

[0090] Assuming that A1 has no power shortage at t2, all power will be transferred to B1 and B2;

[0091]

[0092] x b1a1 =x b2a1

[0093] (2) If there is a positive reserve gap, only part of the distributed electricity will be transferred to the province with the net load peak. The transferred electricity must meet the following requirements: first, it must not exceed the electricity obtained from the province when the net load peak is reached; second, the positive reserve after the transfer must not be less than the positive reserve after the transfer at the time of the net load peak;

[0094] Assuming that C1 has power shortage at t1, t2, and t3 (represented by S, and the power shortage is generally the largest at t3), there are constraints:

[0095]

[0096] (3) Climbing and descending slope constraints:

[0097] In order to make the positive reserve change gradually and reduce the impact of the peak shifting curve on the power grid, the peak shifting curve adopts a more friendly "climbing" method, which is more in line with the safe operation requirements of the power grid. The climbing and retreat slopes (k up_x , k down_x ) shall not be faster than the climbing and descending slopes of the net load curve (k up_nl , k down_nl );

[0098] k up_x ≤k up_nl

[0099] k down_x ≥k down_nl

[0100] According to the above objective function and constraints, the peak shifting matrix is ​​solved to obtain the peak shifting power of each receiving province during the net load peak period;

[0101] The above initial power distribution matrix and the solved peak shifting matrix are superimposed to obtain the final power distribution matrix;

[0102] The final power distribution matrix:

[0103] As shown in the following table, after the peak-shifting power is superimposed on the initial power distribution, the final power distribution is formed, represented by Y; among the six receiving provinces, peak shifting is formed for A1 and A2 at time t1, peak shifting is formed for B1 and B2 at time t2, and peak shifting is formed for C1 and C2 at time t3. The power distribution before and after peak shifting is shown in the following table:

[0104] Table 1 Final distribution matrix Y (6×3) of peak-shifting transactions and peak-shifting ratio

[0105]

[0106] The final power distribution matrix mentioned above is the preliminary optimization result. The channel ATC check and the climbing and retreating slope check are performed on the preliminary optimization result, as shown below:

[0107] Channel ATC verification:

[0108] If the preliminary optimization result exceeds the available transmission capacity (ATC) of a certain channel L1, the preliminary optimization results of the receiving provinces involved shall be reduced in proportion to not exceed the channel ATC, and the reduced power shall be transferred on average to the provinces that reach the net load peak at the same time and are not subject to the channel ATC constraints;

[0109] If after the second transfer, the power exceeds the channel upper limit, it will be reduced to the channel ATC, and the reduced power will be evenly transferred to the provinces that reach the net load peak at the same time and are not subject to the channel ATC constraints... This iteration will be repeated until the final result is reached to achieve the effect of maximizing the peak-shifting power:

[0110]

[0111] Among them, Y' is the result after proportional reduction of the preliminary optimization results of the receiving end provinces involved;

[0112] Climbing and descending slope verification:

[0113] In the initial optimization process, the climbing and falling slope constraints have been considered. After the channel ATC verification, the climbing and falling slopes may exceed the limit. If the slope exceeds the net load climbing or falling slope, the transferred power will be reduced once to meet the above climbing and falling slope constraints, and the reduced power will be returned to the transferring province according to the proportion of the transferred power.

[0114] After preliminary optimization and channel ATC and slope verification, the pre-transaction results of the off-peak transaction are obtained, and power is cleared according to the pre-transaction results of the off-peak transaction;

[0115] It is worth emphasizing that, as shown in Table 1, the peak-shift ratio q is defined as the ratio of the peak-shift power at a certain moment to the theoretical peak-shift power upper limit (0≤q≤1);

[0116]

[0117] The larger the peak-shifting ratio is, the higher the peak-shifting degree is at that moment, and the more sufficient the sharing of positive and standby reserves between provinces is, that is, the better the peak-shifting optimization effect is; the peak-shifting ratios at moments t1, t2, and t3 are shown in Table 1.

[0118] Embodiment 2

[0119] Figure 2 1 is a system schematic diagram of a peak-shifting clearing device based on a net load peak time difference according to another exemplary embodiment, comprising:

[0120] The sending and receiving end province confirmation module 1 is used to obtain the total power transmitted by the sending end province to one or more receiving end provinces in each time period, and obtain the net load peak time period of the one or more receiving end provinces;

[0121] Initial power distribution matrix acquisition module 2: used to establish an initial power distribution matrix by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces;

[0122] Peak shifting matrix acquisition module 3: used to establish a peak shifting matrix with the peak shifting power received by any receiving province from other receiving provinces during its own net load peak period;

[0123] Target acquisition module 4: used to establish an objective function with the goal of maximizing the total amount of off-peak power of each receiving province during its own net load peak period;

[0124] Constraint establishment module 5: used to establish the constraint conditions for solving the peak shifting matrix;

[0125] Solving module 6: used to solve the peak shifting matrix with the objective function as the solving target under the condition that the constraint conditions are met, and obtain the peak shifting power of each receiving province during its own net load peak period;

[0126] Final power distribution matrix acquisition module 7: used for superimposing the initial power distribution matrix with the peak-shifting power of each receiving end during its own net load peak period to obtain the final power distribution matrix;

[0127] The clearing module 8 is used to perform inter-provincial power clearing according to the final power distribution matrix.

[0128] Embodiment three:

[0129] This embodiment provides a storage medium, wherein the storage medium stores a computer program, and when the computer program is executed by a main controller, each step in the above method is implemented;

[0130] It is understandable that the storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0131] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0132] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" refers to at least two.

[0133] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0134] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0135] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0136] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0137] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0138] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0139] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A peak-shift clearing method based on net load peak time difference, characterized in that: The method comprises: Obtain the total power transmitted from the sending end province to one or more receiving end provinces in each time period, and obtain the net load peak time period of the one or more receiving end provinces; An initial power distribution matrix is ​​established by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces; A peak shifting matrix is ​​established by using the peak-shifting power received by any receiving province from other receiving provinces during its own net load peak period; The objective function is established with the goal of maximizing the total amount of off-peak power in each receiving province during its own net load peak period; Establishing constraint conditions for solving the peak shifting matrix; Under the condition that the constraint conditions are met, the peak shifting matrix is ​​solved with the objective function as the solution target to obtain the peak shifting power of each receiving province during its own net load peak period; The initial power distribution matrix is ​​superimposed with the peak-shifting power of each receiving province during its own net load peak period to obtain a final power distribution matrix; Inter-provincial power clearing is performed according to the final power distribution matrix.

2. The method according to claim 1, characterized in that Also includes: After obtaining the peak-shifting power of each receiving province during its own net load peak period, the channel ATC verification and the climbing and retreating slope verification are carried out; The channel ATC verification includes: If the peak-shifting power of any receiving province during its own net load peak period exceeds the available transmission capacity of any transmission channel; The peak-shifting power of the receiving province is reduced in proportion until it does not exceed the available transmission capacity of the transmission channel. The proportionally reduced power is transferred on average to the receiving province that reaches the net load peak in the same period and is not constrained by the available transmission capacity of the transmission channel.

3. The method according to claim 2, characterized in that The climbing and retreating slope verification includes: After channel ATC verification, if the slope of the peak-shaving power curve of any receiving province exceeds the net load climbing slope or retreating slope, the peak-shaving power of the receiving province will be reduced until the climbing and retreating slope constraints in the constraints are met, and the reduced peak-shaving power will be returned to other receiving provinces according to the proportion of the power transferred.

4. The method according to claim 3, characterized in that Also includes: When solving the peak shifting matrix, the net load peak period of each receiving province is taken as a known condition to participate in the calculation.

5. The method according to claim 4, characterized in that The constraints include: Initial power distribution constraints, fairness constraints, and ramp slope constraints; The initial power distribution constraint includes: the power transferred by the receiving province shall not exceed the power allocated to it from the sending province; The fairness constraints include: If the receiving province of the electricity being transferred does not have a positive reserve gap, all the electricity allocated from the sending province will be transferred to other receiving provinces that have reached the peak period of net load; If the receiving province of the transferred power has a positive reserve gap, the transferred power shall not exceed the power obtained from the receiving province during its own net load peak period, and the positive reserve after the transfer shall not be less than the positive reserve after the transfer during its own net load peak period; The climbing and retreating slope constraints include: The climbing slope and falling slope of the peak-shaving curve of peak-shaving power shall not be faster than the climbing slope and falling slope of its own net load curve.

6. The method according to claim 1, characterized in that Also includes: After obtaining the off-peak power, the peak shift ratio is obtained according to the off-peak power and the theoretical off-peak power upper limit, and the advantages and disadvantages of inter-provincial peak shift transactions are evaluated by the peak shift ratio.

7. A peak-shifting clearing device based on the net load peak time difference, characterized in that: The device comprises: The sending and receiving end province confirmation module is used to obtain the total power transmitted by the sending end province to one or more receiving end provinces in each time period, and obtain the net load peak time period of the one or more receiving end provinces; An initial power distribution matrix acquisition module is used to establish an initial power distribution matrix by evenly distributing the total power transmitted by the transmitting province during the net load peak period of the one or more receiving provinces to one or more receiving provinces; Peak shifting matrix acquisition module: used to establish a peak shifting matrix with the peak shifting power received by any receiving province from other receiving provinces during its own net load peak period; Target acquisition module: used to establish an objective function with the goal of maximizing the total amount of off-peak power of each receiving province during its own net load peak period; Constraint establishment module: used to establish the constraint conditions for solving the peak shifting matrix; A solution module: used to solve the peak shifting matrix with the objective function as the solution target under the condition that the constraint conditions are met, so as to obtain the peak shifting power of each receiving province during its own net load peak period; The final power distribution matrix acquisition module is used to superimpose the initial power distribution matrix with the peak-shifting power of each receiving end during its own net load peak period to obtain the final power distribution matrix; Clearing module: used for clearing inter-provincial electricity according to the final power distribution matrix.

8. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the main controller, each step of the peak-shifting clearing method based on net load peak time difference as described in any one of claims 1 to 6 is implemented.

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