CN111049131A - Method and system for generating regional power grid online fault disposal plan - Google Patents
Method and system for generating regional power grid online fault disposal plan Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The invention discloses a method for generating a regional power grid online fault disposal plan, which comprises the steps of analyzing a tripping switch at the periphery of a fault device according to fault device information and a power grid topological structure; searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid; generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle; and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan. A corresponding system is also disclosed. According to the method, the power failure station and the power failure bus thereof are searched according to the fault equipment information and the power grid topological structure, the power recovery plans are generated, risk assessment is carried out on each power recovery plan, the optimal power recovery plan is obtained according to the assessment result and serves as the final fault handling plan, compared with the plan generated by the traditional method, the method is more reasonable and comprehensive, and the capability of a dispatcher in handling major faults of the power grid is greatly improved.
Description
Technical Field
The invention relates to a method and a system for generating a regional power grid online fault handling plan, and belongs to the technical field of intelligent analysis and control of power systems.
Background
The problems that the current power grid operation mode is complex, the equipment load is heavy, the power supply capacity is insufficient and the like are increasingly prominent, the pressure of safe operation of the power grid is increased day by day, the power grid fault events are frequent day by day, and the serious consequences are brought to the safe operation of the power grid.
In the dispatching operation accident processing, an optimal plan for power failure fault handling needs to be provided quickly, and as regional power grids are gradually enlarged, when a dispatcher searches a power supply path for a power failure load, the power supply path obtained by observation and experience is inevitable to have omission and negligence, so that a new method for generating the plan for fault handling is urgently needed.
Disclosure of Invention
The invention provides a method and a system for generating a regional power grid online fault disposal plan, which solve the problems disclosed in the background technology.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a method for generating a regional power grid online fault handling plan comprises the following steps,
analyzing a tripping switch at the periphery of the fault equipment according to the fault equipment information and the power grid topological structure;
searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid;
generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle;
and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
The fault equipment information is fault equipment information extracted from the fault warning information or fault equipment information preset on a plant station diagram.
The process of searching the power-losing station and the power-losing bus thereof comprises the following steps,
judging whether the spare power automatic switching is started on the section after the tripping switch acts;
responding to the starting of the spare power automatic switching device, writing the action information of the spare power automatic switching device into an analysis section, and searching a power-off station and a power-off bus thereof.
The process of judging whether the backup power automatic switching device is started is that,
and scanning the whole network bus, judging whether the voltage is lost according to the bus measurement information, and judging whether the backup power automatic switching is started or not according to a backup power automatic switching model and action logic in the dispatching control system if the voltage is lost.
Starting from the fault equipment, searching the power-losing equipment by adopting a breadth-first search algorithm according to the power flow direction of the power grid, and separating the power-losing station and the power-losing bus thereof from the power-losing equipment.
The principle of the compound electricity is as follows:
according to the descending order of the voltage grades, the power-lost power station is powered up again; if the voltage grades are the same, the power-off station is powered back according to a preset rule;
according to the descending order of the voltage grades, the power-losing buses of the power-losing station are powered up;
searching whether an external power supply replenishes the power-losing bus, then searching whether a bus coupler replenishes the power-losing bus, and finally searching whether a high-voltage main transformer of the original power supply replenishes the power-losing bus.
And calculating the weight value of each power distribution plan, and evaluating the risk level according to the weight value, wherein the power distribution plan with the lowest risk level is the optimal power distribution plan.
A generation system of an online fault disposal plan of a regional power grid comprises,
trip switch analysis module: analyzing a tripping switch at the periphery of the fault equipment according to the fault equipment information and the power grid topological structure;
the power-off searching module: searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid;
a complex electricity plan generating module: generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle;
an evaluation module: and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to perform a regional power grid online fault handling plan generation method.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing a regional power grid online fault handling plan generation method.
The invention achieves the following beneficial effects: according to the method, the power failure station and the power failure bus thereof are searched according to the fault equipment information and the power grid topological structure, the power recovery plans are generated, risk assessment is carried out on each power recovery plan, the optimal power recovery plan is obtained according to the assessment result and serves as the final fault handling plan, compared with the plan generated by the traditional method, the method is more reasonable and comprehensive, and the capability of a dispatcher in handling major faults of the power grid is greatly improved.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a method for generating a plan for online fault handling of a regional power grid includes the following steps:
step 1, collecting fault equipment information.
Under the condition that the power grid is abnormal, acquiring fault equipment information extracted from fault alarm information or fault equipment information preset on a plant station diagram in a real-time periodic scanning mode; and acquiring power grid model information, equipment remote signaling and remote measuring data, equipment parameters, node connection relation and the like in the dispatching control system, and establishing an initial section for fault recovery analysis.
The fault equipment information mainly comprises: switch tripping, bus fault, line fault and total station voltage loss information.
When a real-time fault occurs, the organization form of a message and a channel of the message are determined by the intelligent alarm function, and if the organization form of the message and the channel of the message are completely consistent, fault equipment information is received if the fault occurs.
And 2, analyzing the tripping switches around the fault equipment according to the fault equipment information and the power grid topological structure.
After fault equipment information is received, the topological structure and the switch opening and closing state of the power grid are analyzed until a bus and a main transformer are achieved, and tripping switches on the periphery of the fault equipment are analyzed.
Step 3, searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid; the specific process is as follows:
31) and judging whether the spare power automatic switching is started on the cross section after the tripping switch acts.
And scanning the whole network bus, judging whether the voltage is lost according to the bus measurement information, and judging whether the backup power automatic switching is started or not according to a backup power automatic switching model and action logic in the dispatching control system if the voltage is lost.
32) Responding to the starting of the spare power automatic switching device, writing the action information of the spare power automatic switching device into an analysis section (namely writing into an initial section), remotely signaling and telemetering data on the new analysis section according to a power grid topological structure, starting from fault equipment, searching for power loss equipment by adopting a breadth-first search algorithm according to the power grid tide direction, and then separating out a power loss station and a power loss bus thereof from the power loss equipment; and responding to the condition that the spare power automatic switching device is not started, and searching a power-off station and a power-off bus thereof under the condition of the initial section.
And 4, generating a power restoration plan of the power loss station and the power loss bus thereof according to a preset power restoration principle.
The compound electricity principle is as follows:
A. according to the descending order of the voltage grades, the power-off station is powered back, namely, the higher the voltage grade is, the power-off station is powered back preferentially; if the voltage grades are the same, the power-off station is powered back according to a preset rule; the preset rules are artificially configured rules, such as: the loss load is large, the number of important users is large, and the like, namely the higher the loss load is, the higher the priority is for power restoration, the larger the number of important users is, the higher the priority is for power restoration;
B. according to the descending order of the voltage grades, the power-losing buses of the power-losing station are subjected to power restoration, namely, the higher the voltage grade is, the power restoration is prioritized;
C. searching whether an external power supply replenishes the power-losing bus, if so, generating an external power supply replenisher plan, then searching whether a bus coupler replenishes the power-losing bus, if so, generating a bus coupler replenisher plan, and finally searching whether a high-voltage main transformer of the original power supply replenishes the power-losing bus, and if so, generating a high-voltage main transformer replenisher plan; wherein, the weight coefficient of the power recovery by the external power is high; the weight coefficient of the bus-coupled complex power is the second one, and the weight coefficient of the high-voltage main transformer complex power of the original power supply is the lowest one.
And 5, performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
And calculating the weight value of each power distribution plan, and evaluating the risk level according to the weight value, wherein the power distribution plan with the lowest risk level is the optimal power distribution plan.
According to the method, the power-off station and the power-off bus thereof are searched according to the fault equipment information and the power grid topological structure, the power-on plans are generated, risk assessment is carried out on each power-on plan, the optimal power-on plan is obtained according to the assessment result and serves as the final fault handling plan, compared with the plan generated by the traditional method, the method is more reasonable and comprehensive, and the capability of a dispatcher in handling major faults of the power grid is greatly improved.
A generation system of an online fault disposal plan of a regional power grid comprises,
trip switch analysis module: analyzing a tripping switch at the periphery of the fault equipment according to the fault equipment information and the power grid topological structure;
the power-off searching module: searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid;
a complex electricity plan generating module: generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle;
an evaluation module: and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
A computer readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a computing device, cause the computing device to generate a method for a regional power grid online fault handling plan.
A computing device comprising one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing a regional power grid online fault handling plan generation method.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may 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, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (10)
1. A method for generating a regional power grid online fault handling plan is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
analyzing a tripping switch at the periphery of the fault equipment according to the fault equipment information and the power grid topological structure;
searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid;
generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle;
and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
2. The method for generating the on-line fault handling plan of the regional power grid according to claim 1, wherein the method comprises the following steps: the fault equipment information is fault equipment information extracted from the fault warning information or fault equipment information preset on a plant station diagram.
3. The method for generating the on-line fault handling plan of the regional power grid according to claim 1, wherein the method comprises the following steps: the process of searching the power-losing station and the power-losing bus thereof comprises the following steps,
judging whether the spare power automatic switching is started on the section after the tripping switch acts;
responding to the starting of the spare power automatic switching device, writing the action information of the spare power automatic switching device into an analysis section, and searching a power-off station and a power-off bus thereof.
4. The method for generating the on-line fault handling plan of the regional power grid according to claim 3, wherein: the process of judging whether the backup power automatic switching device is started is that,
and scanning the whole network bus, judging whether the voltage is lost according to the bus measurement information, and judging whether the backup power automatic switching is started or not according to a backup power automatic switching model and action logic in the dispatching control system if the voltage is lost.
5. The method for generating the on-line fault handling plan of the regional power grid according to claim 3, wherein: starting from the fault equipment, searching the power-losing equipment by adopting a breadth-first search algorithm according to the power flow direction of the power grid, and separating the power-losing station and the power-losing bus thereof from the power-losing equipment.
6. The method for generating the on-line fault handling plan of the regional power grid according to claim 1, wherein the method comprises the following steps: the principle of the compound electricity is as follows:
according to the descending order of the voltage grades, the power-lost power station is powered up again; if the voltage grades are the same, the power-off station is powered back according to a preset rule;
according to the descending order of the voltage grades, the power-losing buses of the power-losing station are powered up;
searching whether an external power supply replenishes the power-losing bus, then searching whether a bus coupler replenishes the power-losing bus, and finally searching whether a high-voltage main transformer of the original power supply replenishes the power-losing bus.
7. The method for generating the on-line fault handling plan of the regional power grid according to claim 1, wherein the method comprises the following steps: and calculating the weight value of each power distribution plan, and evaluating the risk level according to the weight value, wherein the power distribution plan with the lowest risk level is the optimal power distribution plan.
8. The utility model provides a regional electric wire netting online failure treatment scheme generation system which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
trip switch analysis module: analyzing a tripping switch at the periphery of the fault equipment according to the fault equipment information and the power grid topological structure;
the power-off searching module: searching a power-losing station and a power-losing bus thereof from a tripping switch according to the topological structure of the power grid;
a complex electricity plan generating module: generating a power restoration plan of a power loss station and a power loss bus thereof according to a preset power restoration principle;
an evaluation module: and performing risk assessment on all the power recovery plans, and taking the optimal power recovery plan as a final fault handling plan.
9. A computer readable storage medium storing one or more programs, characterized in that: the one or more programs include instructions that, when executed by a computing device, cause the computing device to perform any of the methods of claims 1-7.
10. A computing device, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
one or more processors, memory, and one or more programs stored in the memory and configured to be executed by the one or more processors, the one or more programs including instructions for performing any of the methods of claims 1-7.
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