A security check method for inter-regional medium and long-term power transaction and related device

Abstract

This invention discloses a method and related apparatus for the security verification of inter-provincial medium- and long-term power transactions, belonging to the field of power system dispatching and planning. The method includes: acquiring basic grid information; constructing inter-provincial transaction paths; calculating the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of transmission channels based on verified medium- and long-term power transactions; calculating the available transmission capacity of transmission channels within the transaction paths based on the remaining transmission capacity, according to the structure of the inter-provincial transaction paths; calculating the available transmission capacity of the inter-provincial transaction paths based on the available transmission capacity of transmission channels within the transaction paths; and performing security verification on the medium- and long-term power transactions to be verified or adjusted based on the relationship between the available transmission capacity of the inter-provincial transaction paths and the power of the medium- and long-term power transactions to be verified or adjusted. This invention achieves quantitative analysis of the entire process of medium- and long-term power transaction verification, significantly improving the accuracy of medium- and long-term verification.

Description

Technical Field

[0001] This invention relates to the field of power system dispatching planning, and specifically to a method and related apparatus for security verification of inter-provincial medium- and long-term power transactions. Background Technology

[0002] The verification of medium- and long-term power transactions is generally organized by the dispatch center. Based on the annual operation mode calculation and analysis, stable operation control regulations, etc., the power generation and transmission capacity is determined. Power and quantity safety verification is carried out on various medium- and long-term physical transactions submitted by the trading institutions for the year, month, and intra-month, to determine whether the transaction exceeds the power generation capacity and the available transmission capacity of the transmission section.

[0003] Currently, due to the rapid development of the electricity market, the continuous increase in installed capacity of new energy sources, the increasingly complex grid structure, the increasing volume of traded electricity, and the increasingly rigid execution, the uneven distribution of power generation and the uncertainty of trading results have led to increasingly complex and volatile power flow in the grid. The available power volume for grid dispatching to balance and adjust is gradually decreasing, the grid safety margin is declining, there is a lack of rapid quantitative analysis methods for system operating boundaries, and a shortage of tools for assessing power feasibility. This increases the workload and difficulty for dispatching personnel. Therefore, the verification of medium- and long-term power transactions is particularly important. However, while there is more research on short-term safety verification in China, research and application of medium- and long-term power safety verification are relatively rare. Traditional methods relying on manual experience and simple power volume additions and subtractions to arrange and adjust power plans (trading) are increasingly unsuitable for the complex operation of the power grid. Summary of the Invention

[0004] The purpose of this invention is to provide a safety verification method and related apparatus for inter-provincial medium- and long-term power transactions, so as to overcome the problems of traditional medium- and long-term power transaction verification, which mainly relies on manual experience and simple power addition and subtraction verification and adjustment of power plans (transactions), lacks accurate available transmission capacity calculation models, and lacks the basis and means for quantitative analysis of transaction verification.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A security verification method for inter-provincial medium- and long-term power transactions includes the following steps: Obtain basic power grid information; Based on basic power grid information, inter-provincial trading pathways are constructed; Based on the verified medium- and long-term power transactions, calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channels; Based on the composition of the inter-provincial trading route, the available transmission capacity of the transmission channel in the trading route is calculated based on the remaining transmission capacity. Calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Based on the relationship between the available transmission capacity of the inter-provincial trading route and the power of the medium- and long-term power transactions to be verified or adjusted, a safety verification is performed on the medium- and long-term power transactions to be verified or adjusted.

[0006] Furthermore, the basic power grid information includes the power grid model and verified medium- and long-term power transactions.

[0007] Furthermore, the inter-provincial trading path includes several trading nodes and transmission channels, and these trading nodes and transmission channels are configured according to the following principles: (1) The trading nodes and transmission channels in the power grid model are connected in sequence according to the transmission direction; (2) The same transaction path between provinces does not repeatedly pass through the same transaction node.

[0008] Furthermore, the calculation of the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channel based on the verified medium- and long-term power transactions specifically includes: (1) Calculate the maximum transmission capacity of the transmission section using the improved optimal power flow: Adjust the objective function of the optimal power flow to the maximum transmission capacity of the transmission channel, and consider the power that has passed the verification in the constraints. The specific calculation method is as follows: The objective function is expressed as follows:

[0009] The constraints include physical power flow equation constraints, load increase constraints, and power generation capacity limitation constraints. The physical power flow equation constraints are expressed as follows:

[0010] The load increase constraint is expressed as follows:

[0011] The power generation capacity limitation constraint is expressed as follows:

[0012]

[0013]

[0014] in, and It refers to the active and reactive power output of the generator unit. Maximizing power transmission channels s The active transmission power; and These are the active and reactive load requirements under maximum transmission conditions, respectively. This refers to the medium- and long-term power trading capacity that has already been verified. and These are the initial active and reactive load data. and as well as and These are the lower and upper limits of the unit's active and reactive power generation, respectively. It is a scalar parameter, representing the load increment; It is a constant that specifies the load increase rate; and It is a busbar Voltage amplitude and angle; ; and These are elements of the system admittance matrix; (2) Based on the verified medium- and long-term power trading and distribution coefficients, calculate the used transmission capacity of the transmission channel. The calculation formula is as follows:

[0015] In the formula, It is a power transmission channel s The existing transmission capacity, It is a power transmission channel s The above has passed the verification. i A medium- to long-term power transaction, It is the first i Inter-provincial trading path of the transaction l In power transmission channels s Distribution coefficient on; (3) Calculate the available transmission capacity of the transmission channel based on its maximum transmission capacity and the used transmission capacity. The calculation formula is as follows:

[0016] In the formula, It is a power transmission channel s The remaining transmission capacity, It is a margin factor reserved to cope with temporary fluctuations in load and equipment.

[0017] Furthermore, based on the composition of the inter-provincial trading path, the available transmission capacity of the transmission channel in the trading path is calculated based on the remaining transmission capacity. The calculation formula is as follows:

[0018] In the formula, It is a power transmission channel s The remaining transmission capacity, It is a power transmission section s In the transaction path l Available transmission capacity in the region.

[0019] Furthermore, the calculation of the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channels in the trading path specifically involves: according to the composition of the trading path, the minimum available transmission capacity of each transmission channel in the trading path is the available transmission capacity of the trading path, expressed as follows:

[0020] In the formula, It is a transaction path l The available transmission capacity, where n is the number of transmission paths that constitute the transaction. l The amount of power transmission is large.

[0021] Furthermore, the process of performing a security check on the medium- and long-term power transactions to be checked or adjusted based on the relationship between the available transmission capacity of the inter-provincial transaction path and the power of the transactions to be checked or adjusted specifically involves: If the power volume of a medium- or long-term power transaction to be verified or adjusted is greater than the available transmission capacity of the inter-provincial power transaction path, the medium- or long-term power transaction fails the verification and needs to be adjusted before being re-verified; if the power volume of a medium- or long-term power transaction to be verified or adjusted is not greater than the available transmission capacity of the inter-provincial power transaction path, the verification passes.

[0022] A security verification system for inter-provincial medium- and long-term power transactions includes: Information acquisition module: used to acquire basic power grid information; Transaction path construction module: used to construct inter-provincial transaction paths based on basic power grid information; The first calculation module is used to calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channel based on the verified medium- and long-term power transactions. The second calculation module is used to calculate the available transmission capacity of the transmission channel in the transaction path based on the remaining transmission capacity, according to the composition of the inter-provincial transaction path. The third calculation module is used to calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Verification module: Used to perform security verification on medium- and long-term power transactions to be verified or adjusted based on the relationship between the available transmission capacity of the inter-provincial transaction path and the power of the medium- and long-term power transactions to be verified or adjusted.

[0023] A computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the steps of the security verification method for inter-provincial medium- and long-term power transactions.

[0024] A computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the security verification method for inter-provincial medium- and long-term power transactions.

[0025] Compared with the prior art, the present invention has the following beneficial technical effects: First, this invention establishes a complete verification process for medium- and long-term power transactions. It standardizes the verification methods for medium- and long-term power transactions from aspects such as transaction path construction, maximum transmission capacity calculation, and available transmission capacity calculation. It proposes a maximum transmission capacity calculation method based on improved optimal power flow. Based on medium- and long-term transactions that have already been verified, it calculates the maximum transmission capacity of the transmission channel to ensure that the calculation results are consistent with the actual results. This forms a complete and executable verification process and quantitative verification method, providing a standard for the subsequent unified development of business management and technical support systems.

[0026] Secondly, this invention proposes a verification method based on the available transmission capacity of the trading path, and puts forward a quantitative calculation method that can accurately calculate the maximum transmission capacity and available transmission capacity of the transmission channel and the trading path. It also considers the impact of the verified transactions on the existing transmission channels, which greatly improves the efficiency of medium and long-term power transaction verification. The standardized process, coupled with automated data access and calculation, effectively reduces the working hours of staff. According to the actual results, the overall efficiency of transaction verification is improved by more than 400%.

[0027] Finally, this invention improves the accuracy of medium- and long-term power transaction verification, refines the construction of inter-provincial transaction paths, accurately calculates the maximum transmission capacity and available transmission capacity of transmission sections, and accurately calculates the distribution coefficient through the power grid topology. It breaks through the traditional manual calculation mode, realizes quantitative analysis of the entire process of medium- and long-term power transaction verification, and significantly improves the accuracy of medium- and long-term verification. Attached Figure Description

[0028] The accompanying drawings are provided to further understand the invention and constitute a part of this invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0029] Figure 1 This is a schematic diagram of the method flow of the present invention; Figure 2 This is a schematic diagram of the system structure of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0032] Example 1 See Figure 1 This invention provides a security verification method for inter-provincial medium- and long-term power transactions, comprising the following steps: Obtain basic power grid information; Based on basic power grid information, inter-provincial trading pathways are constructed; Based on the verified medium- and long-term power transactions, calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channels; Based on the composition of the inter-provincial trading route, the available transmission capacity of the transmission channel in the trading route is calculated based on the remaining transmission capacity. Calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Based on the relationship between the available transmission capacity of the inter-provincial trading route and the power of the medium- and long-term power transactions to be verified or adjusted, a safety verification is performed on the medium- and long-term power transactions to be verified or adjusted.

[0033] This invention, through thorough field research, establishes inter-provincial trading paths based on actual needs and the physical topology of the power grid. Considering operational modes, power outages, and maintenance information, it determines the maximum transmission capacity of transmission channels based on improved optimal power flow, forming a complete and quantitative calculation process and method for available transmission capacity. This refined method calculates the available transmission capacity of trading paths. It also verifies inter-provincial medium- and long-term power transactions to determine whether transactions exceed limits. By quantitatively solving for available transmission capacity, it conducts refined safety verification, providing dispatching agencies with tools and means to better address the challenges brought by the development of the electricity market, clean energy, and the power grid.

[0034] Example 2 This embodiment provides a security verification method for inter-provincial medium- and long-term power transactions, including the following steps: 1. Obtain basic information. This includes power grid models and verified medium- and long-term power transactions.

[0035] 2. Constructing inter-provincial trading routes. An inter-provincial trading route consists of several trading nodes and transmission channels, constructed according to the following principles: (1) The trading nodes and transmission channels in the power grid model are linked together in sequence according to the transmission direction; (2) The same transaction path does not pass through the same transaction node repeatedly.

[0036] 3. Calculate the maximum transmission capacity of the transmission channel. Taking the verified medium- and long-term power transactions as the unit output under the current baseline, and considering information such as equipment maintenance and operation mode, the objective function of the optimal power flow is adjusted to the maximum transmission capacity of the transmission channel. The constraints include the verified power, and the maximum transmission capacity of the transmission channel is calculated using the improved optimal power flow.

[0037] Objective function:

[0038] The constraints include: (1) Physical power flow equations:

[0039] (2) Load increase constraint:

[0040] (3) Power generation capacity limitations:

[0041]

[0042]

[0043] in, and It refers to the active and reactive power output of the generator unit. Maximum transmission cross-section s The active power transmitted can be linearly represented by the active power output of the generator unit; and These are the active and reactive load requirements under maximum transmission conditions, respectively. This refers to the medium- and long-term power trading capacity that has already been verified. and It contains the initial active and reactive load data. and as well as and These are the lower and upper limits of the unit's active and reactive power generation, respectively, with the upper limit taking into account the impact of maintenance and operating modes. It is a scalar parameter, representing the load increment; It is a constant that specifies the load increase rate; and It is a busbar Voltage amplitude and angle; ; and These are elements of the system admittance matrix.

[0044] 4. Calculate the used transmission capacity of the transmission channel. Based on the verified medium- and long-term power trading and distribution coefficients, calculate the used transmission capacity of the transmission channel using the following formula:

[0045] In the formula, It is a power transmission channel s The existing transmission capacity, It is a power transmission channel s The above has passed the verification. i A medium- to long-term power transaction, It is the first i Inter-provincial trading path of the transaction l In power transmission channels s The distribution coefficient on the grid can be calculated using a power grid model.

[0046] 5. Calculate the remaining transmission capacity of the transmission channel. Based on the maximum transmission capacity and the used transmission capacity of the transmission channel, calculate the available transmission capacity of the transmission channel. The calculation formula is as follows:

[0047] In the formula, It is a power transmission channel s The remaining transmission capacity, It is a margin factor reserved to cope with temporary fluctuations in load and equipment, and is usually set in advance by the operators.

[0048] 6. Calculate the available transmission capacity of the transmission channel in the trading path. Based on the composition of the trading path, calculate the available transmission capacity of the transmission section in the trading path. The calculation formula is as follows:

[0049] In the formula, It is a power transmission section s In the transaction path l Available transmission capacity in the region.

[0050] 7. Calculate the available transmission capacity of inter-provincial power trading routes. Based on the composition of the trading routes, the minimum available transmission capacity of each transmission section within the route is the total available transmission capacity of the trading route. That is:

[0051] In the formula, It is a transaction path l The available transmission capacity, where n is the number of transmission paths that constitute the transaction. l The number of power transmission sections.

[0052] 8. Obtain information on medium- and long-term power transactions pending verification or adjustment. This includes the time period, power volume, and transaction route for each medium- and long-term transaction. If a transaction fails verification, the power volume will be reduced based on available transmission capacity.

[0053] 9. Conduct security verification for medium- and long-term power transactions. Based on the transaction information of each medium- and long-term transaction, locate the corresponding transaction path and compare the power of the medium- and long-term transaction with the available transmission capacity of the inter-provincial transaction path. If the power of the medium- and long-term transaction is greater than the available transmission capacity of the inter-provincial transaction path, the transaction fails the verification and needs to be adjusted and re-verified; if the power of the transaction is not greater than the available transmission capacity, the verification passes.

[0054] Example 3 See Figure 2 This invention provides a security verification system for inter-provincial medium- and long-term power transactions, characterized in that it includes: Information acquisition module: used to acquire basic power grid information; Transaction path construction module: used to construct inter-provincial transaction paths based on basic power grid information; The first calculation module is used to calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channel based on the verified medium- and long-term power transactions. The second calculation module is used to calculate the available transmission capacity of the transmission channel in the transaction path based on the remaining transmission capacity, according to the composition of the inter-provincial transaction path. The third calculation module is used to calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Verification module: Used to perform security verification on medium- and long-term power transactions to be verified or adjusted based on the relationship between the available transmission capacity of the inter-provincial transaction path and the power of the medium- and long-term power transactions to be verified or adjusted.

[0055] Example 4 The present invention provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the security verification method for inter-provincial medium- and long-term power transactions.

[0056] Example 5 The present invention provides a computer-readable storage medium storing a computer program, characterized in that the computer program, when executed by a processor, implements the steps of the security verification method for inter-provincial medium- and long-term power transactions.

[0057] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0058] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0059] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0060] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit its scope of protection. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that after reading the present invention, they can still make various changes, modifications or equivalent substitutions to the specific implementation of the invention, but these changes, modifications or equivalent substitutions are all within the scope of protection of the pending claims of the invention.

Claims

1. A method for security verification of inter-provincial medium- and long-term power transactions, characterized in that, Includes the following steps: Obtain basic power grid information; Based on basic power grid information, inter-provincial trading pathways are constructed; Based on the verified medium- and long-term power transactions, calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channels; Based on the composition of the inter-provincial trading route, the available transmission capacity of the transmission channel in the trading route is calculated based on the remaining transmission capacity. Calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Based on the relationship between the available transmission capacity of the inter-provincial trading route and the power of the medium- and long-term power transactions to be verified or adjusted, a safety verification is performed on the medium- and long-term power transactions to be verified or adjusted.

2. The security verification method for inter-provincial medium- and long-term power transactions according to claim 1, characterized in that, The basic information about the power grid includes the power grid model and verified medium- and long-term power transactions.

3. The security verification method for inter-provincial medium- and long-term power transactions according to claim 2, characterized in that, The inter-provincial trading path includes several trading nodes and transmission channels, and these nodes and transmission channels are configured according to the following principles: (1) The trading nodes and transmission channels in the power grid model are connected in sequence according to the transmission direction; (2) The same transaction path between provinces does not repeatedly pass through the same transaction node.

4. The security verification method for inter-provincial medium- and long-term power transactions according to claim 3, characterized in that, The calculation of the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channel based on the verified medium- and long-term power transactions specifically includes: (1) Calculate the maximum transmission capacity of the transmission section using the improved optimal power flow: Adjust the objective function of the optimal power flow to the maximum transmission capacity of the transmission channel, and consider the power that has passed the verification in the constraints. The specific calculation method is as follows: The objective function is expressed as follows: The constraints include physical power flow equation constraints, load increase constraints, and power generation capacity limitation constraints. The physical power flow equation constraints are expressed as follows: The load increase constraint is expressed as follows: The power generation capacity limitation constraint is expressed as follows: in, and It refers to the active and reactive power output of the generator unit. Maximizing power transmission channels s The active transmission power; and These are the active and reactive load requirements under maximum transmission conditions, respectively. This refers to the medium- and long-term power trading capacity that has already been verified. and These are the initial active and reactive load data. and as well as and These are the lower and upper limits of the unit's active and reactive power generation, respectively. It is a scalar parameter, representing the load increment; It is a constant that specifies the load increase rate; and It is a busbar Voltage amplitude and angle; ; and These are elements of the system admittance matrix; (2) Based on the verified medium- and long-term power trading and distribution coefficients, calculate the used transmission capacity of the transmission channel. The calculation formula is as follows: In the formula, It is a power transmission channel s The existing transmission capacity, It is a power transmission channel s The above has passed the verification. i A medium- to long-term power transaction, It is the first i Inter-provincial trading path of the transaction l In power transmission channels s Distribution coefficient on; (3) Calculate the available transmission capacity of the transmission channel based on its maximum transmission capacity and the used transmission capacity. The calculation formula is as follows: In the formula, It is a power transmission channel s The remaining transmission capacity, It is a margin factor reserved to cope with temporary fluctuations in load and equipment.

5. The security verification method for inter-provincial medium- and long-term power transactions according to claim 1, characterized in that, The available transmission capacity of the transmission channel in the trading path is calculated based on the remaining transmission capacity according to the composition of the inter-provincial trading path. The calculation formula is as follows: In the formula, It is a power transmission channel s The remaining transmission capacity, It is a power transmission section s In the transaction path l Available transmission capacity in the region.

6. The security verification method for inter-provincial medium- and long-term power transactions according to claim 1, characterized in that, The calculation of the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channels in the trading path is specifically as follows: According to the composition of the trading path, the minimum available transmission capacity of each transmission channel in the trading path is the available transmission capacity of the trading path, expressed as follows: In the formula, It is a transaction path l The available transmission capacity, where n is the number of transmission paths that constitute the transaction. l The amount of power transmission is large.

7. The security verification method for inter-provincial medium- and long-term power transactions according to claim 1, characterized in that, The process of performing a security check on the medium- and long-term power transactions to be checked or adjusted, based on the relationship between the available transmission capacity of the inter-provincial transaction path and the power volume of the transactions, involves the following steps: If the power volume of a medium- or long-term power transaction to be verified or adjusted is greater than the available transmission capacity of the inter-provincial power transaction path, the medium- or long-term power transaction fails the verification and needs to be adjusted before being re-verified; if the power volume of a medium- or long-term power transaction to be verified or adjusted is not greater than the available transmission capacity of the inter-provincial power transaction path, the verification passes.

8. A security verification system for inter-provincial medium- and long-term power transactions, characterized in that, include: Information acquisition module: used to acquire basic power grid information; Transaction path construction module: used to construct inter-provincial transaction paths based on basic power grid information; The first calculation module is used to calculate the maximum transmission capacity, used transmission capacity, and remaining transmission capacity of the transmission channel based on the verified medium- and long-term power transactions. The second calculation module is used to calculate the available transmission capacity of the transmission channel in the transaction path based on the remaining transmission capacity, according to the composition of the inter-provincial transaction path. The third calculation module is used to calculate the available transmission capacity of the inter-provincial trading path based on the available transmission capacity of the transmission channel in the trading path; Verification module: Used to perform security verification on medium- and long-term power transactions to be verified or adjusted based on the relationship between the available transmission capacity of the inter-provincial transaction path and the power of the medium- and long-term power transactions to be verified or adjusted.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the security verification method for inter-provincial medium- and long-term power transactions as described in any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the security verification method for inter-provincial medium- and long-term power transactions as described in any one of claims 1 to 7.

Images