An inter-regional and intra-regional reliability generation capacity coordination dispatching and settlement method

Abstract

The application discloses a kind of interregional and regional reliability power generation capacity coordination clearing and settlement method, comprising: the demand side and supply side information of each region's power generation capacity are optimized clearing, obtain each regional pre-clearing result;The pre-clearing result is analyzed, and the power generation capacity adequacy of each region and the interregional reliability power generation capacity information of each region are obtained;Combining the above information and ATC constraint, the interregional reliability power generation capacity is executed multi-channel centralized optimization clearing, and the interregional clearing result and guarantee settlement result are obtained;The above clearing result is boundary to the final optimization clearing of each regional reliability power generation capacity, and the final clearing result and guarantee settlement result of each region are obtained;On the basis of the above result, combined with each regional execution information and reference information, the return difference result and power generation capacity insufficient penalty result of all power generation capacity supply subjects are determined, and the interregional and regional reliability power generation capacity settlement result is obtained.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology for ensuring sufficient power generation capacity, and in particular to a method and system for coordinated clearing and settlement of reliable power generation capacity between regions and within regions. Background Art

[0002] With the significant changes in the current power structure, the issue of power generation capacity adequacy has received increasing attention. The solutions to this problem are mainly divided into scarcity methods and capacity methods based on the income composition at home and abroad. The capacity method is currently used in China. The scarcity method takes advantage of the feature of removing the upper limit of the electric energy standard value to directly reflect the actual supply and demand of power generation capacity. However, the electric energy standard value fluctuates significantly, so it has high requirements for the relevant parties involved in the configuration of power generation capacity. The capacity method refers to directly compensating for the cost of power generation capacity. This compensation is mixed with too many subjective factors, making the compensation strength often too large or too small, and cannot accurately reflect the actual supply and demand of power generation capacity.

[0003] Based on systems science, a linkage relationship between the power system's power generation capacity surplus between regions and within regions is established. The scarcity method is integrated to more accurately reflect the supply and demand situation of power generation capacity surplus and the capacity method has the advantage of stable electric energy standard value. A method for coordinated clearing and settlement of reliable power generation capacity between regions and within regions is designed to solve the problems of distortion of capacity standard value for electric energy standard value, low willingness of power generation capacity subjects to participate and improper power generation capacity configuration caused by excessive intervention of human factors, improve the optimization configuration effect of power generation capacity and ensure the power system's power generation capacity surplus. Summary of the Invention

[0004] The first purpose of the present invention is to overcome the shortcomings and deficiencies of the existing technology and provide a method for coordinated clearing and settlement of reliable power generation capacity between regions and within regions, which can effectively improve the optimization configuration effect of power generation capacity and ensure the redundancy of power generation capacity in the power system.

[0005] The second object of the present invention is to provide a system for coordinating clearing and settlement of reliable power generation capacity between regions and within regions.

[0006] The first object of the present invention is achieved by the following technical solution: a method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity, comprising:

[0007] A1: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region to obtain the pre-clearing results of the reliable power generation capacity in each region;

[0008] A2: Analyze the pre-clearing results of the reliable power generation capacity in each region to obtain the power generation capacity adequacy of each region. Then, determine the inter-regional reliable power generation capacity information of each region based on the power generation capacity adequacy of each region.

[0009] A3: Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, multi-channel centralized optimization clearing of the inter-regional reliability power generation capacity is performed to obtain the inter-regional reliability power generation capacity clearing results and the inter-regional reliability power generation capacity guarantee settlement results;

[0010] A4: Using the inter-regional reliability power generation capacity clearing results as the boundary, perform the final optimization and clearing of the reliability power generation capacity in each region, and obtain the final clearing results of the reliability power generation capacity in each region and the reliability power generation capacity guarantee settlement results in each region;

[0011] A5: Combined with the clearing results of inter-regional reliability power generation capacity, the final clearing results of reliability power generation capacity in each region, the execution information and reference information of reliability power generation capacity in each region, the price difference refund results of all power generation capacity suppliers are determined, and the power generation capacity shortage penalty results are determined based on the actual power generation capacity supply situation of all power generation capacity suppliers, and the inter-regional and intra-regional reliability power generation capacity settlement results are obtained.

[0012] Furthermore, the specific operation steps of step A1 are as follows:

[0013] A11: Based on the power generation capacity demand information of the power generation capacity demand entities in each region, a four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is constructed for each region to form demand-side information of the power generation capacity demand entities in each region. The four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is:

[0014] f(x)={f1(x),x∈[0,z min ];f2(x),x∈(z min ,z expect ];f3(x),x∈(z expect ,z max ]}

[0015] f1(x)=h VOLL

[0016]

[0017]

[0018] Where: f(x) is the four-point reliability generation capacity demand function in the region, x is the independent variable of f(x), f1(x), f2(x), and f3(x) are three piecewise functions of f(x), with the starting point being x=0, z min 、z expect 、z max They are the minimum demand for reliable power generation capacity in the region corresponding to the minimum point, the expected demand for reliable power generation capacity in the region corresponding to the expected point, and the maximum demand for reliable power generation capacity in the region corresponding to the maximum point, h VOLL 、h expect They are the load loss standard value in the region and the expected power generation capacity standard value in the region respectively;

[0019] A12: Based on the power generation capacity supply information of the power generation capacity supply entities in each region, a step-by-step reliability power generation capacity supply model for each region is constructed to form supply-side information of the power generation capacity supply entities in each region. The step-by-step reliability power generation capacity supply model is:

[0020]

[0021] g1(t)≤g2(t)≤...≤g n (t)

[0022] Where: g(t) is the step-wise reliable power generation capacity supply function in the region, t is the independent variable of g(t), g1(t), g2(t), ..., g n (t) is the n piecewise function of g(t), which represents the standard value of n power generation capacity supply entities in the region, q1 is the power generation capacity of the first power generation capacity supply entity in the region, q u is the power generation capacity of the u-th power generation capacity supplier in the region, and u is the traversal index of the power generation capacity supplier in the region;

[0023] A13: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region. Each region uses the same mathematical model, with the objective function of maximizing the comprehensive standard value of the reliability power generation capacity in the region. There are capacity constraints and effective total amount constraints on the reliability power generation capacity supply entities in the region. The pre-clearing results of the reliability power generation capacity in each region are obtained. The mathematical model for optimization and clearing is:

[0024] Objective function:

[0025] Capacity constraints of the main suppliers of reliable power generation capacity in the region:

[0026] Effective total amount constraint: Let S1(y)=f(x)-g(t) and S1(y *)=0 0 <y≤y *

[0027] Where: max means maximization, the measurement scales and units of the horizontal and vertical coordinates of f(x), g(t) and S1(y) are exactly the same, represents the integral of f(x) from 0 to y, represents the integral of g(t) from 0 to y, Indicates the comprehensive standard value of reliable power generation capacity in the region, q bid-in,u is the pre-clearing power generation capacity of the u-th power generation capacity supply entity in the region, S1(y) is the comprehensive standard surplus function of the reliability power generation capacity in the region, y is the independent variable of S1(y), y * The total amount of reliable power generation capacity in the region that has been pre-effective;

[0028] The above-mentioned mathematical model of optimization clearing can obtain the pre-clearing results of the reliability power generation capacity in each region: including the pre-clearing situation sequence b of the reliability power generation capacity subject in the region and the pre-effective total amount y of the reliability power generation capacity in the region. * ,in:

[0029] b={q bid-in,1 ,q bid-in,2 ,......,q bid-in,n}

[0030] In the formula, sequence b records the pre-clearing situation of the reliable power generation capacity supply entity in the region, q bid-in,1 is the pre-clearing power generation capacity of the first power generation capacity supplier in the region, q bid-in,2 is the pre-clearing power generation capacity of the second power generation capacity supplier in the region, q bid-in,n It is the pre-clearing power generation capacity of the nth power generation capacity supplier in the region.

[0031] Furthermore, the specific operation steps of step A2 are as follows:

[0032] A21: Analyze the pre-clearing results of the reliable power generation capacity in each region to obtain the power generation capacity margin of each region. If the analysis result is y * >z expect It indicates that the regional power generation capacity is sufficient, otherwise the regional power generation capacity is tight;

[0033] A22: Based on the surplus of power generation capacity in each region, the supply and demand situation of each region in the inter-regional reliable power generation capacity is determined. If the regional power generation capacity is urgent, the region will be used as the demand area of ​​inter-regional reliable power generation capacity, and the demand-side information of inter-regional reliable power generation capacity will be obtained. If the regional power generation capacity is sufficient, the region will be used as the supply area of ​​inter-regional reliable power generation capacity, and the supply-side information of inter-regional reliable power generation capacity will be obtained. Finally, the inter-regional reliable power generation capacity information of each region is obtained.

[0034] Furthermore, the specific operation steps of step A3 are as follows:

[0035] A31: Determine the supply area and demand area of ​​each transmission channel based on the connection relationship, and then use the inter-regional reliability power generation capacity demand side information related to the inter-regional transmission channel i to construct a stepped inter-regional reliability power generation capacity demand model. The stepped inter-regional reliability power generation capacity demand model is:

[0036]

[0037]

[0038] Where: e i (r i ) is the inter-regional reliability generation capacity demand function of inter-regional transmission channel i, i is the ergodic superscript of the inter-regional transmission channel, r i for e i (r i )’s independent variable, for e i (r i ), representing the o demand area values ​​of the inter-regional transmission channel i, r1 i is the power generation capacity of the first demand area of ​​the inter-regional transmission channel i, is the generation capacity of the pth demand region of the inter-regional transmission channel i, and p is the ergodic subscript of the demand region;

[0039] A32: Using the inter-regional reliability power generation capacity supply-side information related to the inter-regional transmission channel i, a stepped inter-regional reliability power generation capacity supply model is constructed. The stepped inter-regional reliability power generation capacity supply model is:

[0040]

[0041]

[0042] Where: d i (w i ) is the inter-regional reliable power generation capacity supply function of inter-regional transmission channel i, w i di (w i )’s independent variable, d i (w i ), representing the j supply region values ​​of the inter-regional transmission channel i, represents the power generation capacity of the first supply region of the inter-regional transmission channel i, represents the power generation capacity of the mth supply region of the inter-regional transmission channel i, where m is the traversal subscript of the supply region;

[0043] A33: Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, a multi-channel centralized optimization clearing is performed on the inter-regional reliability power generation capacity. The objective function is to maximize the comprehensive standard value of the inter-regional reliability power generation capacity. There are inter-regional reliability power generation capacity demand and supply clearing capacity constraints, effective total amount constraints, and ATC constraints of inter-regional transmission channel i. The inter-regional reliability power generation capacity clearing result is obtained. The mathematical model of the optimization clearing is:

[0044] Objective function:

[0045] Inter-regional reliability generation capacity demand clearing capacity constraints:

[0046] Inter-regional reliability power generation capacity supply and clearing capacity constraints:

[0047] Effective total amount constraint: Order and

[0048] ATC constraints of inter-regional transmission channel i:

[0049] In the formula: max means maximization, e i (r i ),d i (w i )and The measurement scale and unit of the horizontal and vertical coordinates are exactly the same. is the e corresponding to the inter-regional transmission channel i i (r i ) function from 0 to a i The points, is the d corresponding to the inter-regional transmission channel i i (w i ) function from 0 to a i The points, represents the comprehensive standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, represents the clearing generation capacity of the pth demand area of ​​the inter-regional transmission channel i, represents the clearing power generation capacity of the mth supply region of the inter-regional transmission channel i, is the comprehensive standard surplus function of inter-regional reliable power generation capacity, a i for The independent variable, represents the total effective inter-regional reliable power generation capacity of inter-regional transmission channel i, ATC i represents the available transmission capacity of inter-regional transmission channel i;

[0050] The above-mentioned mathematical model of optimization clearing can obtain the inter-regional reliability power generation capacity clearing result: including the inter-regional reliability power generation capacity clearing situation sequence c of the inter-regional transmission channel i i Total effective inter-regional reliable power generation capacity in:

[0051]

[0052] Where: sequence c i Record the inter-regional reliability generation capacity clearing situation of inter-regional transmission channel i, Clearing generation capacity for the first demand region of inter-regional transmission channel i, Clearing the generation capacity of the second demand area of ​​the inter-regional transmission channel i, Clearing generation capacity for the oth demand region of inter-regional transmission channel i, is the clearing power generation capacity of the first supply region of the inter-regional transmission channel i, is the clearing power generation capacity of the second supply region of the inter-regional transmission channel i, Clearing the generation capacity of the jth supply region for inter-regional transmission channel i;

[0053] A34: Calculate the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i according to the marginal pricing method, as shown in the following formula:

[0054]

[0055] Where: is the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i, are the last effective demand area standard value and supply area standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, respectively; K1 is the inter-regional price difference coefficient;

[0056] If K1=0, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective supply area value; if K1=1, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective demand area value; if K1=0.5, the marginal value of the inter-regional reliable power generation capacity supply area is the arithmetic mean of the last effective demand area value and the supply area value;

[0057] The inter-regional reliability generation capacity guarantee settlement result is obtained by multiplying the marginal standard value of the inter-regional reliability generation capacity supply area of ​​the inter-regional transmission channel i by the clearing generation capacity of the demand area or the clearing generation capacity of the supply area, as shown in the following formula:

[0058]

[0059] Where: Sequence l i Record the inter-regional reliability power generation capacity guarantee settlement results of inter-regional transmission channel i in the inter-regional reliability power generation capacity.

[0060] Furthermore, the specific operation steps of step A4 are as follows:

[0061] A41: The reliability power generation capacity in each region is finally optimized and cleared based on the clearing result of the reliability power generation capacity between regions. The mathematical model of the final optimization and clearing is:

[0062] Objective function:

[0063] in,

[0064]

[0065] g1(t)≤g2(t)≤....≤g n (t)

[0066] Reliable power generation capacity supply entities in the region should clear capacity constraints:

[0067] Effective total amount constraint: Let S3(y new )=f(x)-g new (t) and S3(y new* )=0 0<y new ≤y new*

[0068] Where: max means maximization, f(x), g new (t) and S3(y new )'s horizontal and vertical coordinates have the same measurement scale and units. For f(x) function from 0 to y new The points, g new (t) function from 0 to y new The points, Indicates the updated comprehensive value of reliable power generation capacity in the region, g new (t) is the updated regional reliable power generation capacity supply function, t is both g(t) and g new (t) is the independent variable, Δq1 is the inter-regional reliable power generation capacity cleared by the first power generation capacity supply entity, Δq u is the inter-regional reliable power generation capacity cleared by the u-th power generation capacity supply entity, is the final clearing power generation capacity of the u-th power generation capacity supply entity, S3(y new ) is the comprehensive standard surplus function of regional reliable power generation capacity obtained after boundary update based on the clearing result of inter-regional reliable power generation capacity, y new S3(y new )’s independent variable, y new* Indicates the final effective total amount of reliable power generation capacity in the region;

[0069] The mathematical model of the final optimization clearing can obtain the final clearing results of the reliability power generation capacity in each region: including the final clearing result sequence b of the reliability power generation capacity supply entity in the region new The final effective total amount of reliable power generation capacity in the region y new* ,in:

[0070]

[0071] Where: sequence b new Record the final clearing results of the reliable power generation capacity supply entities in the region, The final clearing power generation capacity of the first power generation capacity supplier, The final clearing power generation capacity of the second power generation capacity supplier, The final clearing power generation capacity of the nth power generation capacity supply entity;

[0072] A42: Calculate the marginal value of reliable power generation capacity in the region using the marginal pricing method, as shown in the following formula:

[0073]

[0074] Where: is the marginal value of the reliability power generation capacity in the region, are the last effective power generation capacity supply entity bid value and power generation capacity demand entity bid value of the reliability power generation capacity in the region, respectively; K2 is the bid price difference coefficient within the region;

[0075] If K2=0, the marginal value of the reliability power generation capacity in the region is the value of the power generation capacity supply entity; if K2=1, the marginal value of the reliability power generation capacity in the region is the value of the power generation capacity demand entity; if K2=0.5, the marginal value of the reliability power generation capacity in the region is the arithmetic average of the value of the power generation capacity supply entity and the value of the power generation capacity demand entity;

[0076] The reliability power generation capacity guarantee settlement result in each region is obtained by multiplying the marginal standard value of the reliability power generation capacity in each region by the final clearing power generation capacity of the power generation capacity supplier, as shown in the following formula:

[0077]

[0078] Wherein, sequence l1 records the settlement results of reliability power generation capacity assurance in each region.

[0079] Furthermore, the specific operation steps of step A5 are as follows:

[0080] A51: The execution information of the reliable power generation capacity of each region is determined by the variable scale value of the marginal power generation capacity supply entity during the peak load period of each region, as shown in the following formula:

[0081]

[0082] Where: P strike Perform calibration for regional reliability; P t The marginal power generation capacity supplier in the region is at peak load period t peak The output of C is the scalar value function of the regional marginal power generation capacity supply entity;

[0083] A52: Determine the reference information of the reliability power generation capacity of each region, including the day-ahead electric energy marginal value and the real-time electric energy marginal value. The regional reliability reference value is expressed as:

[0084] p ref =λ×p da +(1-λ)×p rt

[0085] Where: p ref is the regional reliability reference value, p da 、p rt are the day-ahead electric energy marginal value and real-time electric energy marginal value of the region, respectively; λ is an adjustment parameter, ranging from 0 to 1;

[0086] A53: When the regional reliability reference value is lower than or equal to the regional reliability execution value, no operation is required. When the regional reliability reference value is higher than the regional reliability execution value, that is, p ref >p strikeWhen calculating the price difference returned by all power generation capacity suppliers, the calculation formula is:

[0087]

[0088] Where: The return price difference that the u-th power generation capacity supplier in the region needs to pay to the region, The return price difference that the mth generation capacity entity in the inter-regional reliability generation capacity under the inter-regional transmission channel i related to the region needs to pay to the region;

[0089] A54: If during the peak load period of a region, there is a situation where the power generation capacity of all power generation capacity suppliers related to the region is unavailable or the power generation capacity is insufficient to provide electricity according to the cleared power generation capacity, then the power generation capacity supplier will not only be unable to obtain electricity energy benefits, but will also need to pay the return price difference as a penalty, thereby effectively increasing the willingness of all power generation capacity suppliers to generate electricity during the peak load period of the region, and summarizing the results of the reliability power generation capacity settlement between and within regions.

[0090] The second object of the present invention is achieved through the following technical solution: a system for coordinated clearing and settlement of reliable power generation capacity between regions and within regions, for implementing the above-mentioned method for coordinated clearing and settlement of reliable power generation capacity between regions and within regions, comprising:

[0091] The first calculation module is used to optimize and clear the demand-side information of the power generation capacity demand entities in each region and the supply-side information of the power generation capacity supply entities to obtain the pre-clearing results of the reliability power generation capacity in each region;

[0092] The analysis module is used to analyze the pre-clearing results of the reliability power generation capacity in each region, obtain the power generation capacity adequacy of each region, and then determine the inter-regional reliability power generation capacity information of each region based on the power generation capacity adequacy of each region;

[0093] The second calculation module is used to combine the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel to perform multi-channel centralized optimization clearing of the inter-regional reliability power generation capacity, and obtain the inter-regional reliability power generation capacity clearing results and inter-regional reliability power generation capacity guarantee settlement results;

[0094] The third calculation module is used to perform the final optimization and clearing of the reliability power generation capacity in each region based on the inter-regional reliability power generation capacity clearing result as the boundary, and obtain the final clearing result of the reliability power generation capacity in each region and the reliability power generation capacity guarantee settlement result in each region;

[0095] The settlement module is used to combine the inter-regional reliability power generation capacity clearing results, the final clearing results of the reliability power generation capacity in each region, the execution information and reference information of the reliability power generation capacity in each region, determine the return price difference results of all power generation capacity supply entities, and determine the power generation capacity shortage penalty results based on the actual power generation capacity supply situation of all power generation capacity supply entities, and obtain the inter-regional and intra-regional reliability power generation capacity settlement results.

[0096] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0097] 1. Solve the problem of low willingness of power generation capacity entities to participate in power generation during peak load periods of the power system.

[0098] 2. Solve the problem of improper configuration of power generation capacity caused by excessive human intervention.

[0099] 3. Improve the optimization configuration effect of power generation capacity and ensure the redundancy of power generation capacity in the power system.

[0100] In summary, the present invention can improve the flexible utilization of power generation capacity by increasing the configuration of power generation capacity between regions, reduce the urgency of power generation capacity demand in areas with scarce power generation capacity, and at the same time, based on the problem of distortion of capacity standard values ​​with respect to electric energy standard values ​​that has been solved by the existing technology, further solve the problem of low willingness of power generation capacity entities to participate in power generation during peak load periods of the power system and improper configuration of power generation capacity due to excessive intervention by human factors, thereby improving the optimization configuration effect of power generation capacity and ensuring the redundancy of power generation capacity in the power system. BRIEF DESCRIPTION OF THE DRAWINGS

[0101] Figure 1 Schematic diagram of the process of the present invention.

[0102] Figure 2 Schematic diagram of the process of step A1 in the present invention.

[0103] Figure 3 Schematic diagram of the process of step A2 in the present invention.

[0104] Figure 4 Schematic diagram of the process of step A3 in the present invention.

[0105] Figure 5 Schematic diagram of the process of step A4 in the present invention.

[0106] Figure 6 Schematic diagram of the process of step A5 in the present invention.

[0107] Figure 7 This is an architectural diagram of the system of the present invention. DETAILED DESCRIPTION

[0108] The present invention will be described in further detail below with reference to the embodiments and drawings, but the embodiments of the present invention are not limited thereto.

[0109] Example 1

[0110] like Figure 1 As shown, this embodiment discloses a method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity, which includes the following steps:

[0111] A1: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region to obtain the pre-clearing results of the reliability power generation capacity in each region, such as Figure 2 As shown, the following steps are included:

[0112] A11: Based on the power generation capacity demand information of the power generation capacity demand entities in each region, a four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is constructed for each region to form demand-side information of the power generation capacity demand entities in each region. The four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is:

[0113] f(x)={f1(x),x∈[0,z min ];f2(x),x∈(z min ,z expect ];f3(x),x∈(z expect ,z max ]}

[0114] f1(x)=h VOLL

[0115]

[0116]

[0117] Where: f(x) is the four-point reliability generation capacity demand function in the region, x is the independent variable of f(x), f1(x), f2(x), and f3(x) are three piecewise functions of f(x), with the starting point being x=0, z min 、z expect 、z max They are the minimum demand for reliable power generation capacity in the region corresponding to the minimum point, the expected demand for reliable power generation capacity in the region corresponding to the expected point, and the maximum demand for reliable power generation capacity in the region corresponding to the maximum point, h VOLL 、h expect They are the load loss standard value in the region and the expected power generation capacity standard value in the region respectively;

[0118] Taking area A and area B as examples, the parameter settings of the examples are as follows:

[0119] Table 1 Parameters of the four-point reliability generation capacity demand model for two regions

[0120] area Starting point Minimum point Expected Points Maximum point Area A [0,100] [100,100] [130,70] [200,0] Area B [0,95] [90,95] [120,80] [170,0]

[0121] A12: Based on the power generation capacity supply information of the power generation capacity supply entities in each region, a step-by-step reliability power generation capacity supply model for each region is constructed to form supply-side information of the power generation capacity supply entities in each region. The step-by-step reliability power generation capacity supply model is:

[0122]

[0123] g1(t)≤g2(t)≤...≤g n (t)

[0124] Where: g(t) is the step-wise reliable power generation capacity supply function in the region, t is the independent variable of g(t), g1(t), g2(t), ..., g n (t) is the n piecewise function of g(t), which represents the standard value of n power generation capacity supply entities in the region, q1 is the power generation capacity of the first power generation capacity supply entity in the region, q u is the power generation capacity of the u-th power generation capacity supplier in the region, and u is the traversal index of the power generation capacity supplier in the region;

[0125] Taking area A and area B as examples, the parameter settings of the examples are as follows:

[0126] Table 2 Parameters of the stepped reliability power generation capacity supply model in region A

[0127]

[0128] Table 3 Parameters of the stepped reliability power generation capacity supply model in region B

[0129]

[0130] A13: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region. Each region uses the same mathematical model, with the objective function of maximizing the comprehensive standard value of the reliability power generation capacity in the region. There are capacity constraints and effective total amount constraints on the reliability power generation capacity supply entities in the region. The pre-clearing results of the reliability power generation capacity in each region are obtained. The mathematical model for optimization and clearing is:

[0131] Objective function:

[0132] Capacity constraints of the main suppliers of reliable power generation capacity in the region:

[0133] Effective total amount constraint: Let S1(y)=f(x)-g(t) and S1(y * )=0 0 <y≤y *

[0134] Where: max means maximization, the measurement scales and units of the horizontal and vertical coordinates of f(x), g(t) and S1(y) are exactly the same, represents the integral of f(x) from 0 to y, represents the integral of g(t) from 0 to y, Indicates the comprehensive standard value of reliable power generation capacity in the region, q bid-in,u is the pre-clearing power generation capacity of the u-th power generation capacity supply entity in the region, S1(y) is the comprehensive standard surplus function of the reliability power generation capacity in the region, y is the independent variable of S1(y), y * The total amount of reliable power generation capacity in the region that has been pre-effective;

[0135] The above-mentioned mathematical model of optimization clearing can obtain the pre-clearing results of the reliability power generation capacity in each region: including the pre-clearing situation sequence b of the reliability power generation capacity subject in the region and the pre-effective total amount y of the reliability power generation capacity in the region. * ,in:

[0136] b={q bid-in,1 ,q bid-in,2 ,......,q bid-in,n}

[0137] In the formula, sequence b records the pre-clearing situation of the reliable power generation capacity supply entity in the region, q bid-in,1 is the pre-clearing power generation capacity of the first power generation capacity supplier in the region, q bid-in,2 is the pre-clearing power generation capacity of the second power generation capacity supplier in the region, q bid-in,n It is the pre-clearing power generation capacity of the nth power generation capacity supplier in the region.

[0138] Taking region A and region B as examples, the running results of the examples are as follows:

[0139] Table 4 Results of pre-clearing of regional reliability generation capacity in regions A and B

[0140]

[0141] A2: Analyze the pre-clearing results of the reliability power generation capacity in each region to obtain the power generation capacity adequacy of each region, and then determine the inter-regional reliability power generation capacity information of each region based on the power generation capacity adequacy of each region, such as Figure 3 As shown, the following steps are included:

[0142] A21: Analyze the pre-clearing results of the reliable power generation capacity in each region to obtain the power generation capacity margin of each region. If the analysis result is y * >z expect It means that the regional power generation capacity is relatively sufficient, otherwise the regional power generation capacity is relatively tight;

[0143] Taking region A and region B as examples, the running results of the examples are as follows:

[0144] Region A has sufficient power generation capacity, while region B has limited power generation capacity.

[0145] A22: Based on the surplus of power generation capacity in each region, the supply and demand situation of each region in the inter-regional reliable power generation capacity is determined. If the regional power generation capacity is relatively urgent, the region is used as the demand area of ​​inter-regional reliable power generation capacity, and the demand-side information of inter-regional reliable power generation capacity is obtained. If the regional power generation capacity is relatively abundant, the region is used as the supply area of ​​inter-regional reliable power generation capacity, and the supply-side information of inter-regional reliable power generation capacity is obtained. Finally, the inter-regional reliable power generation capacity information of each region is obtained.

[0146] Taking region A and region B as examples, the running results of the examples are as follows:

[0147] Region A serves as the supply area of ​​inter-regional reliable power generation capacity, and region B serves as the demand area of ​​inter-regional reliable power generation capacity.

[0148] A3: Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, multi-channel centralized optimization clearing is performed on the inter-regional reliability power generation capacity to obtain the inter-regional reliability power generation capacity clearing results and inter-regional reliability power generation capacity guarantee settlement results, such as Figure 4 As shown, the following steps are included:

[0149] A31: Determine the supply area and demand area of ​​each transmission channel based on the connection relationship, and then use the inter-regional reliability power generation capacity demand side information related to the inter-regional transmission channel i to construct a stepped inter-regional reliability power generation capacity demand model. The stepped inter-regional reliability power generation capacity demand model is:

[0150]

[0151]

[0152] Where: e i (r i ) is the inter-regional reliability generation capacity demand function of inter-regional transmission channel i, i is the ergodic superscript of the inter-regional transmission channel, r i for e i(r i )’s independent variable, for e i (r i ), which represents the o demand area values ​​of the inter-regional transmission channel i, r1 is the power generation capacity of the first demand area of ​​the inter-regional transmission channel i, is the generation capacity of the pth demand region of the inter-regional transmission channel i, and p is the ergodic subscript of the demand region;

[0153] Taking area A and area B as examples, the parameter settings of the examples are as follows:

[0154] Table 5 Parameters of the stepped inter-regional reliability generation capacity demand model for region B

[0155]

[0156] A32: Using the inter-regional reliability power generation capacity supply-side information related to the inter-regional transmission channel i, a stepped inter-regional reliability power generation capacity supply model is constructed. The stepped inter-regional reliability power generation capacity supply model is:

[0157]

[0158] Where: d i (w i ) is the inter-regional reliable power generation capacity supply function of inter-regional transmission channel i, w i d i (w i )’s independent variable, d i (w i ), representing the j supply region values ​​of the inter-regional transmission channel i, represents the power generation capacity of the first supply region of the inter-regional transmission channel i, represents the power generation capacity of the mth supply region of the inter-regional transmission channel i, where m is the traversal subscript of the supply region;

[0159] Taking area A and area B as examples, the parameter settings of the examples are as follows:

[0160] Table 6 Parameters of the stepped inter-regional reliability power generation capacity supply model for region A

[0161]

[0162] Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, a multi-channel centralized optimization clearing is performed on the inter-regional reliability power generation capacity. The objective function is to maximize the comprehensive standard value of the inter-regional reliability power generation capacity. There are inter-regional reliability power generation capacity demand and supply clearing capacity constraints, effective total amount constraints and ATC constraints of inter-regional transmission channel i. The inter-regional reliability power generation capacity clearing result is obtained. The mathematical model of the optimization clearing is:

[0163] Objective function:

[0164] Inter-regional reliability generation capacity demand clearing capacity constraints:

[0165] Inter-regional reliability power generation capacity supply and clearing capacity constraints:

[0166] Effective total amount constraint: Order and

[0167] ATC constraints of inter-regional transmission channel i:

[0168] In the formula: max means maximization, e i (r i ),d i (w i )and The measurement scale and unit of the horizontal and vertical coordinates are exactly the same. is the e corresponding to the inter-regional transmission channel i i (r i ) function from 0 to a i The points, is the d corresponding to the inter-regional transmission channel i i (w i ) function from 0 to a i The points, represents the comprehensive standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, represents the clearing generation capacity of the pth demand area of ​​the inter-regional transmission channel i, represents the clearing power generation capacity of the mth supply region of the inter-regional transmission channel i, is the comprehensive standard surplus function of inter-regional reliable power generation capacity, a i for The independent variable, represents the total effective inter-regional reliable power generation capacity of inter-regional transmission channel i, ATC i represents the available transmission capacity of inter-regional transmission channel i;

[0169] The above-mentioned mathematical model of optimization clearing can obtain the inter-regional reliability power generation capacity clearing result: including the inter-regional reliability power generation capacity clearing situation sequence c of the inter-regional transmission channel i i Total effective inter-regional reliable power generation capacity Value, where:

[0170]

[0171] Where: sequence c i Record the inter-regional reliability generation capacity clearing situation of inter-regional transmission channel i, Clearing generation capacity for the first demand region of inter-regional transmission channel i, Clearing the generation capacity of the second demand area of ​​the inter-regional transmission channel i, Clearing generation capacity for the oth demand region of inter-regional transmission channel i, is the clearing power generation capacity of the first supply region of the inter-regional transmission channel i, is the clearing power generation capacity of the second supply region of the inter-regional transmission channel i, Clearing the generation capacity of the jth supply region for inter-regional transmission channel i;

[0172] Taking two regions, region A and region B, as examples, the setting parameters and running results of the example are as follows: the inter-region transmission channel constraint is set to ATC = 20 MW;

[0173] Table 7 Clearance of inter-regional reliability power generation capacity between Region A and Region B

[0174]

[0175] Total effective amount of inter-regional reliable power generation capacity The value is 10 MW;

[0176] A34: Calculate the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i according to the marginal pricing method, as shown in the following formula:

[0177]

[0178] Where: is the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i, are the last effective demand area standard value and supply area standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, respectively; K1 is the inter-regional price difference coefficient;

[0179] If K1=0, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective supply area value; if K1=1, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective demand area value; if K1=0.5, the marginal value of the inter-regional reliable power generation capacity supply area is the arithmetic mean of the last effective demand area value and the supply area value;

[0180] The inter-regional reliability generation capacity guarantee settlement result is obtained by multiplying the marginal standard value of the inter-regional reliability generation capacity supply area of ​​the inter-regional transmission channel i by the clearing generation capacity of the demand area or the clearing generation capacity of the supply area, as shown in the following formula:

[0181]

[0182] Where: Sequence l i Record the inter-regional reliability power generation capacity guarantee settlement results of inter-regional transmission channel i in the inter-regional reliability power generation capacity.

[0183] Taking region A and region B as examples, the results of the example operation are as follows:

[0184] The inter-regional bid price difference coefficient between Region A and Region B is set to 0.5;

[0185] Table 8 Inter-regional reliability power generation capacity guarantee settlement results between Region A and Region B

[0186]

[0187] A4: Using the clearing results of inter-regional reliable power generation capacity as the boundary, the reliable power generation capacity in each region is finally optimized and cleared, and the final clearing results of the reliable power generation capacity in each region and the reliable power generation capacity guarantee settlement results in each region are obtained, such as Figure 5 As shown, the following steps are included:

[0188] A41: The reliability power generation capacity in each region is finally optimized and cleared based on the clearing result of the reliability power generation capacity between regions. The mathematical model of the final optimization and clearing is:

[0189] Objective function:

[0190] in,

[0191]

[0192] g1(t)≤g2(t)≤....≤g n (t)

[0193] Reliable power generation capacity supply entities in the region should clear capacity constraints:

[0194] Effective total amount constraint: Let S3(y new )=f(x)-g new (t) and S3(y new* )=0 0<y new ≤y new*

[0195] Where: max means maximization, f(x), g new (t) and S3(y new )'s horizontal and vertical coordinates have the same measurement scale and units. For f(x) function from 0 to y new The points, g new (t) function from 0 to y new The points, Indicates the updated comprehensive value of reliable power generation capacity in this region, g new (t) is the updated regional reliable power generation capacity supply function, t is both g(t) and g new (t) is the independent variable, Δq1 is the inter-regional reliable power generation capacity cleared by the first power generation capacity supply entity, Δq u is the inter-regional reliable power generation capacity cleared by the u-th power generation capacity supply entity, is the final clearing power generation capacity of the u-th power generation capacity supply entity, S3(y new ) is the comprehensive standard surplus function of regional reliable power generation capacity obtained after boundary update based on the clearing result of inter-regional reliable power generation capacity, y new S3(y new )’s independent variable, y new* Indicates the final effective total amount of reliable power generation capacity in the region;

[0196] The mathematical model of the final optimization clearing can obtain the final clearing results of the reliability power generation capacity in each region: including the final clearing result sequence b of the reliability power generation capacity supply entity in the region new The final effective total amount of reliable power generation capacity in the region y new* ,in:

[0197]

[0198] Where: sequence b new Record the final clearing results of the reliable power generation capacity supply entities in the region, The final clearing power generation capacity of the first power generation capacity supplier, The final clearing power generation capacity of the second power generation capacity supplier, the final clearing generation capacity of the nth generation capacity supply subject;

[0199] Taking region A and region B as examples, the example running results are as follows:

[0200] Table 9: Final clearing results of the in-region reliability generation capacity of region A and region B

[0201]

[0202] A42: The in-region reliability generation capacity marginal bid value is calculated according to the marginal pricing method, as shown in the following formula:

[0203]

[0204] In the formula: is the in-region reliability generation capacity marginal bid value, are the in-region reliability generation capacity last effective generation capacity supply subject bid value and generation capacity demand subject bid value respectively, and K2 is the in-region bid price difference value coefficient;

[0205] If K2 = 0, the in-region reliability generation capacity marginal bid value is the generation capacity supply subject bid value; if K2 = 1, the in-region reliability generation capacity marginal bid value is the generation capacity demand subject bid value; if K2 = 0.5, the in-region reliability generation capacity marginal bid value is the arithmetic mean of the generation capacity supply subject bid value and the generation capacity demand subject bid value;

[0206] The in-region reliability generation capacity guarantee settlement result is obtained by multiplying the in-region reliability generation capacity marginal bid value and the final clearing generation capacity of the generation capacity supply subject, as shown in the following formula:

[0207]

[0208] In the formula, sequence l1 records the in-region reliability generation capacity guarantee settlement result.

[0209] Taking region A and region B as examples, the example running results are as follows:

[0210] The in-region bid price difference value coefficients of region A and region B are both set to 0;

[0211] Table 10: In-region reliability generation capacity guarantee settlement result table of region A and region B

[0212]

[0213] A5: Combine the inter-regional reliability power generation capacity clearing results, the final clearing results of the reliability power generation capacity in each region, the execution information and reference information of the reliability power generation capacity in each region, determine the return price difference results of all power generation capacity supply entities, and determine the power generation capacity shortage penalty results based on the actual power generation capacity supply situation of all power generation capacity supply entities, and obtain the inter-regional and intra-regional reliability power generation capacity settlement results, such as Figure 6 As shown, the following steps are included:

[0214] A51: The execution information of the reliability generation capacity of each region is determined by the variable scale value of the marginal generation capacity subject during the peak load period of each region, as shown in the following formula:

[0215]

[0216] Where: P strike Perform calibration for regional reliability; P t The regional marginal power generation capacity supplier is at the peak load period t at time t peak The output of C is the scalar value function of the regional marginal power generation capacity supply entity;

[0217] Taking area A and area B as an example, the example setting parameters are as follows:

[0218] Table 11 Implementation information of reliability generation capacity in regions A and B

[0219] area Execution Information Area A[value] 250 Area B [standard value] 300

[0220] A52: Determine the reference information of the reliability power generation capacity of each region, including the day-ahead electric energy marginal value and the real-time electric energy value. The regional reliability reference value is expressed as:

[0221] p ref =λ×p da +(1-λ)×p rt

[0222] Where: p ref is the regional reliability reference value, p da 、p rt are the day-ahead electric energy marginal value and real-time electric energy marginal value of the region, respectively; λ is an adjustment parameter, ranging from 0 to 1;

[0223] Taking area A and area B as an example, the example setting parameters are as follows:

[0224] Table 12 Reference information table of reliability power generation capacity in area A and area B

[0225] area Day-ahead electric energy marginal value Real-time electric energy marginal value Adjust parameters Area A 255 253 0.5 Area B 309 299 0.5

[0226] A53: When the regional reliability reference value is lower than or equal to the regional reliability execution value, no operation is required. When the regional reliability reference value is higher than the regional reliability execution value, that is, p ref >p strike When calculating the price difference returned by all power generation capacity suppliers, the calculation formula is:

[0227]

[0228] Where: The return price difference that the u-th power generation capacity supplier in the region needs to pay to the region, The return price difference that the mth generation capacity entity in the inter-regional reliability generation capacity under the inter-regional transmission channel i related to the region needs to pay to the region;

[0229] Taking area A and area B as an example, the example setting parameters are as follows:

[0230] Table 13: Price difference refund required for all power generation capacity suppliers in Regions A and B

[0231]

[0232] A54: If during the peak load period of a region, there is a situation where the power generation capacity of all power generation capacity suppliers related to the region is unavailable or the power generation capacity is insufficient to provide electricity according to the cleared power generation capacity, then the power generation capacity supplier will not only be unable to obtain electricity energy benefits, but will also need to pay the return price difference as a penalty, thereby effectively increasing the willingness of all power generation capacity suppliers to generate electricity during the peak load period of the region, and summarizing the results of the reliability power generation capacity settlement between and within regions.

[0233] Taking region A and region B as examples, the example running results are shown in Tables 8, 10, and 13.

[0234] The experimental results show that the effectiveness of the method of the present invention can be fully demonstrated. Region A has sufficient power generation capacity, so the standard values ​​of the supply entities in this region are generally low, while region B has a more urgent power generation capacity, so the standard values ​​of the supply entities in this region are generally high, reflecting the supply and demand relationship. At the same time, the reliable power generation capacity between regions also provides coordination and cooperation between the two. Region A can provide power generation capacity resources for region B under the physical conditions of the inter-regional transmission channel, and the power generation capacity configuration result conforms to the characteristics of maximizing the comprehensive standard value.

[0235] Experimental conclusion: In view of the problems of existing scarcity methods and capacity methods in reflecting the adequacy of power generation capacity, such as large fluctuations in the electric energy standard value, low acceptance by power generation capacity suppliers, and inability to effectively reflect the supply and demand relationship of power generation capacity, the present invention proposes a method for coordinated clearing and settlement of inter-regional and intra-regional reliability power generation capacity. Public experimental data show that the use of the present invention does not have a strong impact on the electric energy standard value of the power generation capacity supplier, and makes the power generation capacity supplier more inclined to supply power generation capacity based on marginal standard value, improve the power generation capacity configuration results, and effectively reflect the supply and demand relationship of power generation capacity. In the following research, the rationality of the setting of reliability power generation capacity execution information and reference information will be explored. It has a good application prospect and is worthy of promotion.

[0236] Example 2

[0237] This embodiment discloses a system for coordinated clearing and settlement of reliable power generation capacity between regions and within regions, which is used to implement the method for coordinated clearing and settlement of reliable power generation capacity between regions and within regions described in Example 1. Figure 7 As shown, it includes the following functional modules:

[0238] The first calculation module is used to optimize and clear the demand-side information of the power generation capacity demand entities in each region and the supply-side information of the power generation capacity supply entities to obtain the pre-clearing results of the reliability power generation capacity in each region;

[0239] The analysis module is used to analyze the pre-clearing results of the reliability power generation capacity in each region, obtain the power generation capacity adequacy of each region, and then determine the inter-regional reliability power generation capacity information of each region based on the power generation capacity adequacy of each region;

[0240] The second calculation module is used to combine the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel to perform multi-channel centralized optimization clearing of the inter-regional reliability power generation capacity, and obtain the inter-regional reliability power generation capacity clearing results and inter-regional reliability power generation capacity guarantee settlement results;

[0241] The third calculation module is used to perform the final optimization and clearing of the reliability power generation capacity in each region based on the inter-regional reliability power generation capacity clearing result as the boundary, and obtain the final clearing result of the reliability power generation capacity in each region and the reliability power generation capacity guarantee settlement result in each region;

[0242] The settlement module is used to combine the inter-regional reliability power generation capacity clearing results, the final clearing results of the reliability power generation capacity in each region, the execution information and reference information of the reliability power generation capacity in each region, determine the return price difference results of all power generation capacity supply entities, and determine the power generation capacity shortage penalty results based on the actual power generation capacity supply situation of all power generation capacity supply entities, and obtain the inter-regional and intra-regional reliability power generation capacity settlement results.

[0243] The implementation methods of the present invention are not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity, characterized in that: include: A1: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region to obtain the pre-clearing results of the reliable power generation capacity in each region; A2: Analyze the pre-clearing results of the reliable power generation capacity in each region to obtain the power generation capacity adequacy of each region. Then, determine the inter-regional reliable power generation capacity information of each region based on the power generation capacity adequacy of each region. A3: Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, multi-channel centralized optimization clearing of the inter-regional reliability power generation capacity is performed to obtain the inter-regional reliability power generation capacity clearing results and the inter-regional reliability power generation capacity guarantee settlement results; A4: Using the inter-regional reliability power generation capacity clearing results as the boundary, perform the final optimization and clearing of the reliability power generation capacity in each region, and obtain the final clearing results of the reliability power generation capacity in each region and the reliability power generation capacity guarantee settlement results in each region; A5: Combined with the clearing results of inter-regional reliability power generation capacity, the final clearing results of reliability power generation capacity in each region, the execution information and reference information of reliability power generation capacity in each region, the price difference refund results of all power generation capacity suppliers are determined, and the power generation capacity shortage penalty results are determined based on the actual power generation capacity supply situation of all power generation capacity suppliers, and the inter-regional and intra-regional reliability power generation capacity settlement results are obtained.

2. The method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to claim 1, characterized in that: The specific steps of step A1 are as follows: A11: Based on the power generation capacity demand information of the power generation capacity demand entities in each region, a four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is constructed for each region to form demand-side information of the power generation capacity demand entities in each region. The four-point reliability power generation capacity demand model including a starting point, a minimum point, an expected point, and a maximum point is: f(x)={f1(x),x∈[0,z min ];f2(x),x∈(z min ,z expect ];f3(x),x∈(z expect ,z max ]} f1(x)=h VOLL Where: f(x) is the four-point reliability generation capacity demand function in the region, x is the independent variable of f(x), f1(x), f2(x), and f3(x) are three piecewise functions of f(x), with the starting point being x=0, z min 、z expect 、z max They are the minimum demand for reliable power generation capacity in the region corresponding to the minimum point, the expected demand for reliable power generation capacity in the region corresponding to the expected point, and the maximum demand for reliable power generation capacity in the region corresponding to the maximum point, h VOLL 、h expect They are the load loss standard value in the region and the expected power generation capacity standard value in the region respectively; A12: Based on the power generation capacity supply information of the power generation capacity supply entities in each region, a step-by-step reliability power generation capacity supply model for each region is constructed to form supply-side information of the power generation capacity supply entities in each region. The step-by-step reliability power generation capacity supply model is: g1(t)≤g2(t)≤...≤g n (t) Where: g(t) is the step-wise reliable power generation capacity supply function in the region, t is the independent variable of g(t), g1(t), g2(t), ..., g n (t) is the n piecewise function of g(t), which represents the standard value of n power generation capacity supply entities in the region, q1 is the power generation capacity of the first power generation capacity supply entity in the region, q u is the power generation capacity of the u-th power generation capacity supplier in the region, and u is the traversal index of the power generation capacity supplier in the region; A13: Optimize and clear the demand-side information of the power generation capacity demand entities and the supply-side information of the power generation capacity supply entities in each region. Each region uses the same mathematical model, with the objective function of maximizing the comprehensive standard value of the reliability power generation capacity in the region. There are capacity constraints and effective total amount constraints on the reliability power generation capacity supply entities in the region. The pre-clearing results of the reliability power generation capacity in each region are obtained. The mathematical model for optimization and clearing is: Objective function: Capacity constraints of the main suppliers of reliable power generation capacity in the region: Effective total amount constraint: Let S1(y)=f(x)-g(t) and S1(y * )=0 0<y≤y * Where: max means maximization, the measurement scales and units of the horizontal and vertical coordinates of f(x), g(t) and S1(y) are exactly the same, represents the integral of f(x) from 0 to y, represents the integral of g(t) from 0 to y, Indicates the comprehensive standard value of reliable power generation capacity in the region, q bid-in,u is the pre-clearing power generation capacity of the u-th power generation capacity supply entity in the region, S1(y) is the comprehensive standard surplus function of the reliability power generation capacity in the region, y is the independent variable of S1(y), y * The total amount of reliable power generation capacity in the region that has been pre-effective; The above-mentioned mathematical model of optimization clearing can obtain the pre-clearing results of the reliability power generation capacity in each region: including the pre-clearing situation sequence b of the reliability power generation capacity subject in the region and the pre-effective total amount y of the reliability power generation capacity in the region. * ,in: b={q bid-in,1 ,q bid-in,2 ,......,q bid-in,n } In the formula, sequence b records the pre-clearing situation of the reliable power generation capacity supply entity in the region, q bid-in,1 is the pre-clearing power generation capacity of the first power generation capacity supplier in the region, q bid-in,2 is the pre-clearing power generation capacity of the second power generation capacity supplier in the region, q bid-in,n It is the pre-clearing power generation capacity of the nth power generation capacity supplier in the region.

3. The method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to claim 2, characterized in that: The specific steps of step A2 are as follows: A21: Analyze the pre-clearing results of the reliable power generation capacity in each region to obtain the power generation capacity margin of each region. If the analysis result is y * >z expect It indicates that the regional power generation capacity is sufficient, otherwise the regional power generation capacity is tight; A22: Based on the surplus of power generation capacity in each region, the supply and demand situation of each region in the inter-regional reliable power generation capacity is determined. If the regional power generation capacity is urgent, the region will be used as the demand area of ​​inter-regional reliable power generation capacity, and the demand-side information of inter-regional reliable power generation capacity will be obtained. If the regional power generation capacity is sufficient, the region will be used as the supply area of ​​inter-regional reliable power generation capacity, and the supply-side information of inter-regional reliable power generation capacity will be obtained. Finally, the inter-regional reliable power generation capacity information of each region is obtained.

4. The method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to claim 3, characterized in that: The specific steps of step A3 are as follows: A31: Determine the supply area and demand area of ​​each transmission channel based on the connection relationship, and then use the inter-regional reliability power generation capacity demand side information related to the inter-regional transmission channel i to construct a stepped inter-regional reliability power generation capacity demand model. The stepped inter-regional reliability power generation capacity demand model is: Where: e i (r i ) is the inter-regional reliability generation capacity demand function of inter-regional transmission channel i, i is the ergodic superscript of the inter-regional transmission channel, r i for e i (r i )’s independent variable, for e i (r i ), representing the o demand area values ​​of the inter-regional transmission channel i, is the power generation capacity of the first demand area of ​​the inter-regional transmission channel i, is the generation capacity of the pth demand region of the inter-regional transmission channel i, and p is the ergodic subscript of the demand region; A32: Using the inter-regional reliability power generation capacity supply-side information related to the inter-regional transmission channel i, a stepped inter-regional reliability power generation capacity supply model is constructed. The stepped inter-regional reliability power generation capacity supply model is: Where: d i (w i ) is the inter-regional reliable power generation capacity supply function of inter-regional transmission channel i, w i d i (w i )’s independent variable, d i (w i ), representing the j supply region values ​​of the inter-regional transmission channel i, represents the power generation capacity of the first supply region of the inter-regional transmission channel i, represents the power generation capacity of the mth supply region of the inter-regional transmission channel i, where m is the traversal subscript of the supply region; A33: Combined with the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel, a multi-channel centralized optimization clearing is performed on the inter-regional reliability power generation capacity. The objective function is to maximize the comprehensive standard value of the inter-regional reliability power generation capacity. There are inter-regional reliability power generation capacity demand and supply clearing capacity constraints, effective total amount constraints, and ATC constraints of inter-regional transmission channel i. The inter-regional reliability power generation capacity clearing result is obtained. The mathematical model of the optimization clearing is: Objective function: Inter-regional reliability generation capacity demand clearing capacity constraints: Inter-regional reliability power generation capacity supply and clearing capacity constraints: Effective total amount constraint: and ATC constraints of inter-regional transmission channel i: In the formula: max means maximization, e i (r i ),d i (w i )and The measurement scale and unit of the horizontal and vertical coordinates are exactly the same. is the e corresponding to the inter-regional transmission channel i i (r i ) function from 0 to a i The points, is the d corresponding to the inter-regional transmission channel i i (w i ) function from 0 to a i The points, represents the comprehensive standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, represents the clearing generation capacity of the pth demand area of ​​the inter-regional transmission channel i, represents the clearing power generation capacity of the mth supply region of the inter-regional transmission channel i, is the comprehensive standard surplus function of inter-regional reliable power generation capacity, a i for The independent variable, represents the total effective inter-regional reliable power generation capacity of inter-regional transmission channel i, ATC i represents the available transmission capacity of inter-regional transmission channel i; The above-mentioned mathematical model of optimization clearing can obtain the inter-regional reliability power generation capacity clearing result: including the inter-regional reliability power generation capacity clearing situation sequence c of the inter-regional transmission channel i i Total effective inter-regional reliable power generation capacity in: Where: sequence c i Record the inter-regional reliability generation capacity clearing situation of inter-regional transmission channel i, Clearing generation capacity for the first demand region of inter-regional transmission channel i, Clearing the generation capacity of the second demand area of ​​the inter-regional transmission channel i, Clearing generation capacity for the oth demand region of inter-regional transmission channel i, is the clearing power generation capacity of the first supply region of the inter-regional transmission channel i, is the clearing power generation capacity of the second supply region of the inter-regional transmission channel i, Clearing the generation capacity of the jth supply region for inter-regional transmission channel i; A34: Calculate the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i according to the marginal pricing method, as shown in the following formula: Where: is the marginal standard value of the inter-regional reliable power generation capacity supply area of ​​the inter-regional transmission channel i, are the last effective demand area standard value and supply area standard value of the inter-regional reliable power generation capacity of the inter-regional transmission channel i, respectively; K1 is the inter-regional price difference coefficient; If K1=0, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective supply area value; if K1=1, the marginal value of the inter-regional reliable power generation capacity supply area is the last effective demand area value; if K1=0.5, the marginal value of the inter-regional reliable power generation capacity supply area is the arithmetic mean of the last effective demand area value and the supply area value; The inter-regional reliability generation capacity guarantee settlement result is obtained by multiplying the marginal standard value of the inter-regional reliability generation capacity supply area of ​​the inter-regional transmission channel i by the clearing generation capacity of the demand area or the clearing generation capacity of the supply area, as shown in the following formula: Where: Sequence l i Record the inter-regional reliability power generation capacity guarantee settlement results of inter-regional transmission channel i in the inter-regional reliability power generation capacity.

5. The method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to claim 4, characterized in that: The specific steps of step A4 are as follows: A41: The reliability power generation capacity in each region is finally optimized and cleared based on the clearing result of the reliability power generation capacity between regions. The mathematical model of the final optimization and clearing is: Objective function: in, g1(t)≤g2(t)≤....≤g n (t) Reliable power generation capacity supply entities in the region should clear capacity constraints: Effective total amount constraint: Let S3(y new )=f(x)-g new (t) and S3(y new* )=0 0 <y new ≤y new* Where: max means maximization, f(x), g new (t) and S3(y new )'s horizontal and vertical coordinates have the same measurement scale and units. For f(x) function from 0 to y new The points, g new (t) function from 0 to y new The points, Indicates the updated comprehensive value of reliable power generation capacity in the region, g new (t) is the updated regional reliable power generation capacity supply function, t is both g(t) and g new (t) is the independent variable, Δq1 is the inter-regional reliable power generation capacity cleared by the first power generation capacity supply entity, Δq u is the inter-regional reliable power generation capacity cleared by the u-th power generation capacity supply entity, is the final clearing power generation capacity of the u-th power generation capacity supply entity, S3(y new ) is the comprehensive standard surplus function of regional reliable power generation capacity obtained after boundary update based on the clearing result of inter-regional reliable power generation capacity, y new S3(y new )’s independent variable, y new* Indicates the final effective total amount of reliable power generation capacity in the region; The mathematical model of the final optimization clearing can obtain the final clearing results of the reliability power generation capacity in each region: including the final clearing result sequence b of the reliability power generation capacity supply entity in the region new The final effective total amount of reliable power generation capacity in the region y new* ,in: Where: sequence b new Record the final clearing results of the reliable power generation capacity supply entities in the region, The final clearing power generation capacity of the first power generation capacity supplier, The final clearing power generation capacity of the second power generation capacity supplier, The final clearing power generation capacity of the nth power generation capacity supply entity; A42: Calculate the marginal value of reliable power generation capacity in the region using the marginal pricing method, as shown in the following formula: Where: is the marginal value of the reliability power generation capacity in the region, are the last effective power generation capacity supply entity bid value and power generation capacity demand entity bid value of the reliability power generation capacity in the region, respectively; K2 is the bid price difference coefficient within the region; If K2=0, the marginal value of the reliability power generation capacity in the region is the value of the power generation capacity supply entity; if K2=1, the marginal value of the reliability power generation capacity in the region is the value of the power generation capacity demand entity; if K2=0.5, the marginal value of the reliability power generation capacity in the region is the arithmetic average of the value of the power generation capacity supply entity and the value of the power generation capacity demand entity; The reliability power generation capacity guarantee settlement result in each region is obtained by multiplying the marginal standard value of the reliability power generation capacity in each region by the final clearing power generation capacity of the power generation capacity supplier, as shown in the following formula: Wherein, sequence l1 records the settlement results of reliability power generation capacity assurance in each region.

6. The method for coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to claim 5, characterized in that: The specific steps of step A5 are as follows: A51: The execution information of the reliable power generation capacity of each region is determined by the variable scale value of the marginal power generation capacity supply entity during the peak load period of each region, as shown in the following formula: Where: P strike Perform calibration for regional reliability; P t The regional marginal power generation capacity supplier is the peak load period t peak The output of C is the scalar value function of the regional marginal power generation capacity supply entity; A52: Determine the reference information of the reliability power generation capacity of each region, including the day-ahead electric energy marginal value and the real-time electric energy marginal value. The regional reliability reference value is expressed as: p ref =λ×p da +(1-λ)×p rt Where: p ref is the regional reliability reference value, p da 、p rt are the day-ahead electric energy marginal value and real-time electric energy marginal value of the region, respectively; λ is an adjustment parameter, ranging from 0 to 1; A53: When the regional reliability reference value is lower than or equal to the regional reliability execution value, no operation is required. When the regional reliability reference value is higher than the regional reliability execution value, that is, p ref >p strike When calculating the price difference returned by all power generation capacity suppliers, the calculation formula is: Where: The return price difference that the u-th power generation capacity supplier in the region needs to pay to the region, The return price difference that the mth generation capacity entity in the inter-regional reliability generation capacity under the inter-regional transmission channel i related to the region needs to pay to the region; A54: If during the peak load period of a region, there is a situation where the power generation capacity of all power generation capacity suppliers related to the region is unavailable or the power generation capacity is insufficient to provide electricity according to the cleared power generation capacity, then the power generation capacity supplier will not only be unable to obtain electricity energy benefits, but will also need to pay the return price difference as a penalty, thereby effectively increasing the willingness of all power generation capacity suppliers to generate electricity during the peak load period of the region, and summarizing the results of the reliability power generation capacity settlement between and within regions.

7. A system for coordinated clearing and settlement of reliable power generation capacity between regions and within regions, characterized in that: The method for achieving coordinated clearing and settlement of inter-regional and intra-regional reliable power generation capacity according to any one of claims 1 to 6 comprises: The first calculation module is used to optimize and clear the demand-side information of the power generation capacity demand entities in each region and the supply-side information of the power generation capacity supply entities to obtain the pre-clearing results of the reliability power generation capacity in each region; The analysis module is used to analyze the pre-clearing results of the reliability power generation capacity in each region, obtain the power generation capacity adequacy of each region, and then determine the inter-regional reliability power generation capacity information of each region based on the power generation capacity adequacy of each region; The second calculation module is used to combine the inter-regional reliability power generation capacity information of each region and the ATC constraints of each inter-regional transmission channel to perform multi-channel centralized optimization clearing of the inter-regional reliability power generation capacity, and obtain the inter-regional reliability power generation capacity clearing results and inter-regional reliability power generation capacity guarantee settlement results; The third calculation module is used to perform the final optimization and clearing of the reliability power generation capacity in each region based on the inter-regional reliability power generation capacity clearing result as the boundary, and obtain the final clearing result of the reliability power generation capacity in each region and the reliability power generation capacity guarantee settlement result in each region; The settlement module is used to combine the inter-regional reliability power generation capacity clearing results, the final clearing results of the reliability power generation capacity in each region, the execution information and reference information of the reliability power generation capacity in each region, determine the return price difference results of all power generation capacity supply entities, and determine the power generation capacity shortage penalty results based on the actual power generation capacity supply situation of all power generation capacity supply entities, and obtain the inter-regional and intra-regional reliability power generation capacity settlement results.

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