A power supply balance risk prevention and control decision method, system, medium, equipment and product for power outage maintenance planning

Abstract

The application discloses a power system dispatching automation technical field, and relates to a power supply balance risk prevention and control decision method, system, medium, equipment and product for a power outage maintenance plan. The method comprises the following steps: calculating the total output of all support newly started units and the total transmission capacity of all support standby tie-line channels in the power balance risk area during the maintenance period; if the first criterion is met, selecting the first support newly started unit in the order of the regulation cost index from small to large to carry out risk prevention and control; if the first criterion is not met and the second criterion is met, selecting the first support standby tie-line channel in the order of the regulation cost index from small to large to carry out risk prevention and control; if the first criterion is not met and the second criterion is not met and the third criterion is met, the remaining power gap is used to reduce the load power in advance. The application can effectively reduce the power outage risk and improve the safety and reliability of power maintenance.

Description

Technical Field

[0001] This invention relates to the field of operation ticket application technology for industrial automation monitoring systems, and in particular to a decision-making method, system, medium, equipment and product for power outage maintenance planning, power supply balance risk prevention and control. Background Technology

[0002] During the normal service life of power equipment, rationally scheduling power outages for maintenance can effectively reduce unexpected failures, ensure the health of equipment, extend its service life, and thus improve the reliability, economy, and safety of the power system. Developing power outage maintenance plans is a core business of the power grid dispatching and operation department. By scientifically arranging these plans, different equipment can be scheduled for orderly maintenance within limited time windows. Accurate assessment of potential risks during outages and the development of corresponding prevention and control strategies in advance ensure the reliability, safety, and economy of the power company's production.

[0003] Under the operation mode of power equipment outage maintenance, the power grid structure is weakened due to maintenance of relevant units, lines, or transformers, resulting in a decrease in the power supply capacity of some areas. If an N-1 fault or a parallel N-2 fault occurs at this time, it may lead to localized isolated grid operation or a power balance gap. With increasingly stringent requirements for power supply reliability from power regulatory agencies, it is urgent to manage the power balance risks that may be caused by planned power outage maintenance, and to formulate prevention and control strategies in advance to avoid high-risk events and improve the reliability of power maintenance. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing operation ticket templates, which cannot be flexibly customized, and to provide a decision-making method, system, medium, equipment and product for power outage maintenance planning power supply balance risk prevention and control. It can flexibly and efficiently customize operation ticket templates according to user needs, effectively solving the problems of limited template style changes, cumbersome configuration steps and the need for continuous program upgrades and maintenance caused by the traditional method of customizing operation ticket templates through program programming.

[0005] To solve the above-mentioned technical problems, the present invention is implemented using the following technical solution:

[0006] In a first aspect, the present invention provides a decision-making method for power supply balance risk prevention and control in power outage maintenance plans, comprising:

[0007] Based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, the total output of all supporting newly started generating units in the power balance risk areas during the maintenance period is calculated. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ;

[0008] If the first criterion is met, the top-ranked units will be selected in ascending order of their adjustment cost indices supporting new unit starts. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance.

[0009] If the first criterion is not met but the second criterion is met, all units supporting the new startup should be put into operation, and the units should be selected in ascending order of the adjustment cost index of each supporting standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ;

[0010] If the first criterion is not met, the second criterion is not met, but the third criterion is met, all units supporting the commissioning of new generating units and backup tie-line channels will be put into operation, and the remaining power gap will be considered. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient;

[0011] If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection lines will be deployed, and the risk control decision will be terminated.

[0012] Optionally, based on the acquired power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, the total output of all supporting newly started generating units in the power balance risk area during the maintenance period is calculated. ,include:

[0013] Based on grid operation data, grid topology information, and power plant affiliations, out-of-service units in power balance risk areas are screened, and all units in power balance risk areas that can be added for operation during maintenance periods are statistically analyzed. ;

[0014] Calculate all units that support adding new power-on. Total output ;in, ,in, This indicates support for adding new power-on units. Rated power, .

[0015] Optionally, based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, calculate the total transmission capacity of all standby tie-line channels supporting operation in the power balance risk areas during the maintenance period. ,include:

[0016] Based on power grid operation data, power grid topology information, and power plant affiliations, backup tie-line channels between power balance risk areas and external areas are screened, and all backup tie-line channels that can be put into operation in power balance risk areas during maintenance periods are statistically analyzed. ;

[0017] Calculate all available backup tie-line channels that support commissioning. Total transmission capacity ;in, ,in, This indicates support for the commissioning of the backup communication line. Rated power, .

[0018] Optionally, the selection is based on the adjustment cost index of each unit that supports new startup, in ascending order. One feature supports risk control for newly added power units, including:

[0019] Calculate the adjustment cost index for each unit that supports new startup. ;in, , This indicates support for adding new power-on units. The cost of booting up, This indicates support for adding new power-on units. Rated power;

[0020] According to the adjustment cost index Sort the units that support adding new power-on in ascending order, and select those that meet the criteria. and The former It supports risk control for newly added power generation units.

[0021] Optionally, the selection is based on the adjustment cost index of each supporting standby tie line channel, in ascending order of its value. One backup connection channel is supported for risk control, including:

[0022] Calculate the adjustment cost index for each supporting standby tie line channel to be put into operation. ;in, , This indicates support for the commissioning of the backup communication line. The cost of booting up, This indicates support for the commissioning of the backup communication line. Rated power;

[0023] According to the adjustment cost index Sort the available backup tie-line channels for commissioning in ascending order of size, and select those that meet the requirements. and The former Each backup connection line channel is supported for risk control.

[0024] Optionally, the backup communication line channel includes a hot backup communication line and a cold backup communication line.

[0025] Secondly, the present invention provides a power outage maintenance plan power supply balance risk prevention and control decision system, comprising:

[0026] The data preprocessing module is used to: calculate the total output of all generating units that support new startups in the power balance risk areas during the maintenance period, based on the acquired power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ;

[0027] The Level 1 risk control module is used to: if the first criterion is met, select the top-ranked units according to the order of adjustment cost indicators supporting new unit startup from smallest to largest. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance.

[0028] The secondary risk control module is used to: if the first criterion is not met but the second criterion is met, activate all units supporting new startup, and select the top-performing units in ascending order of adjustment cost indices for each supported standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ;

[0029] The three-tier risk control module is used to: if the first criterion is not met, or if the second criterion is not met but the third criterion is met, activate all units supporting new startup and backup tie-line channels, and adjust the remaining power supply based on the remaining power gap. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient;

[0030] If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection lines will be deployed, and the risk control decision will be terminated.

[0031] Thirdly, the present invention provides a computer-readable storage medium having computer instructions stored thereon, which, when executed by a processor, implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method described in any of the first aspects.

[0032] Fourthly, the present invention provides a computer device, comprising:

[0033] Memory, used to store computer instructions;

[0034] A processor for executing the computer instructions to implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method as described in any of the first aspects.

[0035] Fifthly, the present invention provides a computer program product, including computer instructions, characterized in that, when the computer instructions are executed by a processor, they implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method described in any of the first aspects.

[0036] Compared with existing technologies, the beneficial effects achieved by this invention are as follows:

[0037] 1. The power outage maintenance plan power supply balance risk prevention and control decision method provided by the present invention calculates the total output of all supporting newly started generating units and the total transmission capacity of all supporting standby tie line channels in the power balance risk area during the maintenance period. Combined with the accident standard power deficit threshold value issued by official departments and power companies, the method sets a first criterion, a second criterion and a third criterion, which can effectively reduce the power outage risk and improve the safety and reliability of power maintenance.

[0038] 2. The power outage maintenance plan power supply balance risk prevention and control decision system provided by the present invention, by setting up a data preprocessing module, a primary risk prevention and control module, a secondary risk prevention and control module, and a tertiary risk prevention and control module, realizes the prevention and control decision of power supply balance risks that may be caused by power outage maintenance plans formulated by power dispatching and operation agencies, which has practical significance and good application prospects.

[0039] 3. The computer-readable storage medium, computer device, and computer program product provided by the present invention can execute the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method provided by the present invention. Attached Figure Description

[0040] Figure 1A flowchart illustrating the power outage maintenance plan power supply balance risk prevention and control decision-making method provided in this embodiment of the invention. Detailed Implementation

[0041] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0042] It should be noted that the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0043] Example 1

[0044] This invention discloses a decision-making method for power supply balance prevention and control in power outage maintenance plans, with reference to... Figure 1 As shown, the specific steps include the following:

[0045] S1. Based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, calculate the total output of all supporting newly started generating units in the power balance risk areas during the maintenance period. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ;

[0046] S2, if the first criterion is met, select the top-ranked units according to the order of adjustment cost indices supporting new unit startup from smallest to largest. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance.

[0047] S3, if the first criterion is not met but the second criterion is met, all units supporting the new startup will be put into operation, and the units will be selected in ascending order of the adjustment cost index of each supporting standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ;

[0048] S4, if the first criterion is not met, the second criterion is not met, but the third criterion is met, all units supporting new unit startup and backup tie-line channels supporting commissioning are put into operation, and the remaining power gap is determined accordingly. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient;

[0049] S5. If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection channels will be put into operation, and the risk control decision will be terminated.

[0050] Specifically, this embodiment first searches for units that can be added and started within the power balance risk area, and resolves the power balance risk by starting the units; when starting the units cannot resolve the power balance risk, it searches for available tie line channels between the power balance risk area and the outside, and resolves the power balance risk by putting the available tie lines into operation; when neither starting the units nor putting the available tie lines into operation can resolve the power balance risk, measures are taken to reduce the load in advance to eliminate high-level operational risks.

[0051] Addressing power supply imbalance risks through unit startup includes:

[0052] 1) Based on power grid operation data, power grid topology information, and power plant affiliation, screen out-of-operation units in power balance risk areas;

[0053] 2) Statistical analysis of all generating units that support new startup during maintenance periods in power balance risk areas. ;

[0054] 3) Calculate all units that support adding new power-on. Total output ;in, ,in, This indicates support for adding new power-on units. Rated power, ;

[0055] 4) If Calculate the adjustment cost index for each unit that supports the addition of new generating units. According to the adjustment cost indicator Sort the units that support adding new power-on in ascending order, and select those that meet the criteria. and The former One of the measures supports adding new units to the operating units as a preventative measure for adding new units to the operating units, and terminates the preventative decision; among which, , This indicates support for adding new power-on units. The cost of booting up, This indicates support for adding new power-on units. Rated power;

[0056] 5) If All resources were allocated to support the commissioning of new generating units, and power supply balance risks were addressed by putting available tie lines into operation.

[0057] Addressing power supply imbalance risks through the commissioning of available tie lines includes:

[0058] (1) Based on power grid operation data, power grid topology information and power plant affiliation, screen the backup tie line channels between power balance risk areas and external areas, including hot standby tie lines and cold standby tie lines;

[0059] (2) Statistical analysis of all standby tie line channels that can be put into operation in power balance risk areas during the maintenance period. ;

[0060] (3) Calculate all available backup tie-line channels that support commissioning. Total transmission capacity ;in, ,in, This indicates support for the commissioning of the backup communication line. Rated power, ;

[0061] (4) If Calculate the adjustment cost index for each standby tie line channel that supports commissioning. According to the adjustment cost indicator Sort the available backup tie-line channels for commissioning in ascending order of size, and select those that meet the requirements. and The former One backup connection channel is supported for commissioning, serving as a backup connection channel for epidemic prevention and control measures, and the decision to terminate the epidemic prevention and control measures is made; among them, , This indicates support for the commissioning of the backup communication line. The cost of booting up, This indicates support for the commissioning of the backup communication line. Rated power;

[0062] (5) If All resources were put into operation to support the commissioning of new generating units and backup interconnection lines, and measures were taken to reduce load in advance.

[0063] In this embodiment, the fault standard power deficit threshold value Obtained through standards issued by official departments and power companies, it can also be converted by combining the load loss ratio corresponding to the accident risk level in the Regulations on Emergency Response and Investigation of Power Safety Accidents (State Council Decree No. 599).

[0064] In this embodiment, the adjustment coefficient It is usually greater than 1.0, and can be set as needed.

[0065] In summary, the power supply balance risk prevention and control decision-making method for power outage maintenance plans proposed in this embodiment makes decisions regarding the power supply balance risks caused by power outage maintenance plans in the power system. First, it searches for units that can be added and started within the power supply balance risk area, resolving the power supply balance risk by starting these units. If starting units fails to resolve the power supply balance risk, it searches for available tie-line channels between the power supply balance risk area and the outside world, resolving the power supply balance risk by putting these available tie-line channels into operation. If neither starting units nor putting available tie-line channels into operation can resolve the power supply balance risk, it takes measures to reduce load in advance to prevent high-level operational risks. This embodiment's method achieves prevention and control decisions regarding power supply balance risks that may be caused by power outage maintenance plans formulated by power dispatching and operation agencies, effectively reducing power outage risks and improving the safety and reliability of power maintenance.

[0066] Example 2:

[0067] Based on the same inventive concept as Embodiment 1, this embodiment of the invention discloses a power outage maintenance plan power supply balance risk prevention and control decision system, comprising:

[0068] The data preprocessing module is used to: calculate the total output of all generating units that support new startups in the power balance risk areas during the maintenance period, based on the acquired power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ;

[0069] The Level 1 risk control module is used to: if the first criterion is met, select the top-ranked units according to the order of adjustment cost indicators supporting new unit startup from smallest to largest. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance.

[0070] The secondary risk control module is used to: if the first criterion is not met but the second criterion is met, activate all units supporting new startup, and select the top-performing units in ascending order of adjustment cost indices for each supported standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ;

[0071] The three-tier risk control module is used to: if the first criterion is not met, or if the second criterion is not met but the third criterion is met, activate all units supporting new startup and backup tie-line channels, and adjust the remaining power supply based on the remaining power gap. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient;

[0072] If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection lines will be deployed, and the risk control decision will be terminated.

[0073] The specific functions of each module described above are explained in the relevant content of the method in Embodiment 1, and will not be repeated here.

[0074] Example 3:

[0075] This embodiment provides a computer-readable storage medium storing computer instructions, which, when executed by a processor, implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method as described in any of the embodiments.

[0076] Example 4:

[0077] This embodiment provides a computer device, including:

[0078] Memory, used to store computer instructions;

[0079] A processor is configured to execute the computer instructions to implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method as described in any one of Embodiment 1.

[0080] Example 5:

[0081] This embodiment provides a computer program product, including computer instructions, characterized in that, when the computer instructions are executed by a processor, they implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method as described in any one of Embodiment 1.

[0082] 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.

[0083] 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.

[0084] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0085] 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.

[0086] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A decision-making method for power supply balance risk prevention and control in power outage maintenance plans, characterized in that, include: Based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, the total output of all supporting newly started generating units in the power balance risk areas during the maintenance period is calculated. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ; If the first criterion is met, the top-ranked units will be selected in ascending order of their adjustment cost indices supporting new unit starts. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance. If the first criterion is not met but the second criterion is met, all units supporting the new startup should be put into operation, and the units should be selected in ascending order of the adjustment cost index of each supporting standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ; If the first criterion is not met, the second criterion is not met, but the third criterion is met, all units supporting the commissioning of new generating units and backup tie-line channels will be put into operation, and the remaining power gap will be considered. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient; If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection lines will be deployed, and the risk control decision will be terminated.

2. The power outage maintenance plan power supply balance risk prevention and control decision-making method according to claim 1, characterized in that, Based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, the total output of all supporting newly started generating units in the power balance risk areas during the maintenance period is calculated. ,include: Based on grid operation data, grid topology information, and power plant affiliations, out-of-service units in power balance risk areas are screened, and all units in power balance risk areas that can be added for operation during maintenance periods are statistically analyzed. ; Calculate all units that support adding new power-on. Total output ;in, ,in, This indicates support for adding new power-on units. Rated power, .

3. The power outage maintenance plan power supply balance risk prevention and control decision-making method according to claim 1, characterized in that, Based on the obtained power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans, calculate the total transmission capacity of all standby tie-line channels supporting operation in the power balance risk areas during the maintenance period. ,include: Based on power grid operation data, power grid topology information, and power plant affiliations, backup tie-line channels between power balance risk areas and external areas are screened, and all backup tie-line channels that can be put into operation in power balance risk areas during maintenance periods are statistically analyzed. ; Calculate all available backup tie-line channels that support commissioning. Total transmission capacity ;in, ,in, This indicates support for the commissioning of the backup communication line. Rated power, .

4. The power outage maintenance plan power supply balance risk prevention and control decision-making method according to claim 1, characterized in that, The method of selecting the top-ranked units according to the adjustment cost index of each unit supporting new startup, in ascending order of its value, is as follows: One feature supports risk control for newly added power units, including: Calculate the adjustment cost index for each unit that supports new startup. ;in, , This indicates support for adding new power-on units. The cost of booting up, This indicates support for adding new power-on units. Rated power; According to the adjustment cost index Sort the units that support adding new power-on in ascending order, and select those that meet the criteria. and The former It supports risk control for newly added power generation units.

5. The power outage maintenance plan power supply balance risk prevention and control decision-making method according to claim 1, characterized in that, The selection is based on the adjustment cost index of each supporting standby tie line channel, in ascending order of its value. One backup connection channel is supported for risk control, including: Calculate the adjustment cost index for each supporting standby tie line channel to be put into operation. ;in, , This indicates support for the commissioning of the backup communication line. The cost of booting up, This indicates support for the commissioning of the backup communication line. Rated power; According to the adjustment cost index Sort the available backup tie-line channels for commissioning in ascending order of size, and select those that meet the requirements. and The former Each backup connection line channel is supported for risk control.

6. The power outage maintenance plan power supply balance risk prevention and control decision-making method according to claim 1, characterized in that, The backup communication line channels include hot backup communication lines and cold backup communication lines.

7. A power outage maintenance plan power supply balance risk prevention and control decision system, characterized in that, include: The data preprocessing module is used to: calculate the total output of all generating units that support new startups in the power balance risk areas during the maintenance period, based on the acquired power grid operation data, power grid topology information, power plant affiliations, and power balance risk areas caused by power outage maintenance plans. And the total transmission capacity of all standby tie-line channels supporting operation in power balance risk areas during maintenance periods. ; The Level 1 risk control module is used to: if the first criterion is met, select the top-ranked units according to the order of adjustment cost indicators supporting new unit startup from smallest to largest. One supports risk control for newly added operating units; among which, the first criterion is , This indicates a power shortage in the power grid caused by the planned power outage for maintenance. The secondary risk control module is used to: if the first criterion is not met but the second criterion is met, activate all units supporting new startup, and select the top-performing units in ascending order of adjustment cost indices for each supported standby tie line channel. One backup connection channel is supported for risk control; among which, the second criterion is ; The three-tier risk control module is used to: if the first criterion is not met, or if the second criterion is not met but the third criterion is met, activate all units supporting new startup and backup tie-line channels, and adjust the remaining power supply based on the remaining power gap. The load power was reduced in advance. The third criterion is: , , This represents the threshold value for the standard power deficit in the event of an accident. This indicates the set adjustment coefficient; If the first criterion, the second criterion, and the third criterion are not met, all support for newly added generating units and backup interconnection lines will be deployed, and the risk control decision will be terminated.

8. A computer-readable storage medium storing computer instructions thereon, characterized in that, When the computer instruction is executed by the processor, it implements the steps of the power supply balance risk prevention and control decision-making method for power outage maintenance plans as described in any one of claims 1-6.

9. A computer device, characterized in that, include: Memory, used to store computer instructions; A processor for executing the computer instructions to implement the steps of the power outage maintenance plan power supply balance risk prevention and control decision-making method as described in any one of claims 1-6.

10. A computer program product comprising computer instructions, characterized in that, When the computer instruction is executed by the processor, it implements the steps of the power supply balance risk prevention and control decision-making method for power outage maintenance plan as described in any one of claims 1-6.

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