CN113902316A - Power grid fault handling plan generation method and system - Google Patents
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Abstract
The invention provides a power grid fault handling plan generation method and a power grid fault handling plan generation system, which relate to the technical field of power grid dispatching, and comprise the following steps: s1: acquiring preset fault equipment information and a power grid topological structure; s2: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process; s3: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow; s4: and carrying out preset analysis on the multiple complex power supply plans to obtain an optimal fault handling plan. The method solves the problems of omission and negligence caused by the fact that a dispatcher obtains a power supply path only by means of observation and experience.
Description
Technical Field
The invention relates to the technical field of power grid dispatching, in particular to a power grid fault handling plan generating method and system.
Background
Along with the rapid construction and development of urban large power grids, the operation characteristics of mutual dependence between main power distribution networks are increasingly highlighted, the emergency response for dealing with the main network sudden failure needs integration of main power distribution coordination control urgently, once the condition of power loss of a substation in a whole station occurs, on the basis of accurately positioning the power grid failure, how to take effective measures to reduce the power failure range as far as possible, shorten the power failure time, prevent the expansion and spread of accidents, and recover power supply as early as possible is a very important research topic in the field of dispatching automation systems.
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, if the optimal plan for power failure fault handling cannot be provided quickly, as regional power grids are enlarged day by day, dispatching personnel search power supply paths for power failure loads, and power supply paths obtained by observation and experience are inevitable to have omission and negligence.
Disclosure of Invention
The invention solves the problem of how to obtain an optimal power restoration plan and use the optimal power restoration plan as a final fault handling plan, and solves the omission and negligence caused by the fact that a dispatcher obtains a power supply path only by depending on observation and experience.
In order to solve the above problems, the present invention provides a method for generating a grid fault handling plan, which includes the steps of:
s1: acquiring preset fault equipment information and a power grid topological structure;
s2: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process;
s3: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow;
s4: and carrying out preset analysis on the multiple complex power supply plans to obtain an optimal fault handling plan.
Further, the preset fault equipment information includes switch opening and closing state information, bus fault information, line fault information and total station voltage loss information.
Specifically, when the power grid is abnormal, preset fault equipment information is acquired in a real-time periodic scanning mode. And dispatching power grid model information, equipment remote signaling data information, equipment remote sensing data information, equipment parameters and equipment node connection relation information in the control end, and establishing initial interruption of fault recovery analysis. When a real-time fault occurs, the organization form of a message and a channel of the message are determined by the intelligent warning function, and if the organization form of the message and the channel of the message are completely consistent, preset fault equipment information is received if the fault occurs. According to preset fault equipment information and a power grid topological structure, searching a current power-off plant station and a current power-off bus thereof to generate a power-off plan, performing risk preset analysis on each power-off plan, obtaining an optimal power-off plan according to the preset analysis, and using the optimal power-off plan as a final fault handling plan.
Further, the step S2 includes:
s21: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
s22: acquiring power grid model information, equipment remote signaling data information, equipment remote sensing data information, equipment parameters and equipment node connection relation information in a scheduling control end, and establishing an initial section for fault recovery analysis;
s23: judging whether the spare power automatic switching is started on a cross section of the fault equipment after the action of a tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
s24: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
s25: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
Specifically, topology analysis: after receiving the preset fault equipment information, analyzing the tripping switches around the fault equipment until a bus and a main transformer are analyzed according to a power grid topological structure (obtained from a power grid CIM model) and switch on-off state information.
Specifically, the preset judgment process is as follows: 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. 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.
Further, step S3 includes:
s31: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
s32: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
s33: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
s34: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
Specifically, a power restoration process is preset: 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, and the larger the number of important users is, the priority is for power restoration. And (4) 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 higher the power restoration is preferentially carried out. Firstly 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 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 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.
Further, step S4 includes:
s41: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
s42: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
Specifically, risk assessment is carried out on all the power recovery plans, and the optimal power recovery plan is used 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.
A grid fault handling plan generation system, comprising:
an acquisition module: the method comprises the steps of acquiring preset fault equipment information and a power grid topological structure;
a judging module: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process;
a generation module: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow;
an analysis module: the method is used for carrying out preset analysis on the multiple complex power supply plans to obtain the optimal fault handling plan.
Further, the preset fault equipment information includes switch opening and closing state information, bus fault information, line fault information and total station voltage loss information.
Further, the judging module comprises:
a first analysis unit: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
an acquisition information establishing unit: the system comprises a dispatching control end, a fault recovery analysis module, a fault analysis module and a fault analysis module, wherein the dispatching control end is used for acquiring power grid model information, equipment remote signaling data information, equipment parameters and equipment node connection relation information in the dispatching control end and establishing an initial section of the fault recovery analysis;
a judging unit: the system is used for judging whether the spare power automatic switching is started on the section of the fault equipment after the action of the tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
a second analysis unit: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
a search unit: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
Further, the generating module includes:
a descending unit: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
a first generation unit: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
a second generation unit: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
a third generation unit: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
Further, the analysis module includes:
a calculation unit: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
a sorting unit: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
The technical scheme adopted by the invention has 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, so that the power recovery plans are generated, the risk preset analysis is carried out on each power recovery plan, the optimal power recovery plan is obtained according to the preset analysis and is used as the final fault handling plan.
Drawings
Fig. 1 is a first flowchart of a method for generating a grid fault handling plan according to a first embodiment of the present invention;
fig. 2 is a flowchart of a method for generating a grid fault handling plan according to a first embodiment of the present invention;
fig. 3 is a first structural diagram of a power grid fault handling plan generation system according to a second embodiment of the present invention;
fig. 4 is a second structural diagram of a power grid fault handling plan generation system according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
The present embodiment provides a method for generating a grid fault handling plan, as shown in fig. 1 and fig. 2, the method includes the steps of: s1: acquiring preset fault equipment information and a power grid topological structure; s2: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process; s3: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow; s4: and carrying out preset analysis on the multiple complex power supply plans to obtain an optimal fault handling plan.
Specifically, when the power grid is abnormal, preset fault equipment information is acquired in a real-time periodic scanning mode. And dispatching power grid model information, equipment remote signaling data information, equipment remote sensing data information, equipment parameters and equipment node connection relation information in the control end, and establishing initial interruption of fault recovery analysis. When a real-time fault occurs, the organization form of a message and a channel of the message are determined by the intelligent warning function, and if the organization form of the message and the channel of the message are completely consistent, preset fault equipment information is received if the fault occurs. According to preset fault equipment information and a power grid topological structure, searching a current power-off plant station and a current power-off bus thereof to generate a power-off plan, performing risk preset analysis on each power-off plan, obtaining an optimal power-off plan according to the preset analysis, and using the optimal power-off plan as a final fault handling plan.
The preset fault equipment information comprises switch opening and closing state information, bus fault information, line fault information and total station voltage loss information.
Wherein, step S2 includes:
s21: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
s22: acquiring power grid model information, equipment remote signaling data information, equipment remote sensing data information, equipment parameters and equipment node connection relation information in a scheduling control end, and establishing an initial section for fault recovery analysis;
s23: judging whether the spare power automatic switching is started on a cross section of the fault equipment after the action of a tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
s24: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
s25: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
Specifically, topology analysis: after receiving the preset fault equipment information, analyzing the tripping switches around the fault equipment until a bus and a main transformer are analyzed according to a power grid topological structure (obtained from a power grid CIM model) and switch on-off state information.
Specifically, the preset judgment process is as follows: 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. 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.
Wherein, step S3 includes:
s31: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
s32: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
s33: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
s34: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
Specifically, a power restoration process is preset: 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, and the larger the number of important users is, the priority is for power restoration. And (4) 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 higher the power restoration is preferentially carried out. Firstly 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 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 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.
Wherein, step S4 includes:
s41: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
s42: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
Specifically, risk assessment is carried out on all the power recovery plans, and the optimal power recovery plan is used 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.
Each power supply line has a power supply limit, and the method for calculating the weight value is that the power supply limit-user load is equal to the power supply margin (i.e., the weight value of the power restoration plan), and the more the power supply margin is, the lower the risk level is, and the optimal power restoration plan can be selected.
Specifically, the task of the safety protection of the power transmission section is to coordinate the actions of each backup protection and the safety automatic device from the global point of view, maintain the integrity and the power transmission capacity of the power transmission section and avoid the occurrence of the interlocking overload trip. In other words, when an element is abnormally operated and overloaded, if the element is cut off in a protection mode, other branches in the section are not overloaded, the element is allowed to be cut off in a protection mode; when judging that the branch circuit can cause overload of a new branch circuit in the section after tripping, an emergency control measure is needed to eliminate the overload, and the occurrence of interlocking overload tripping is avoided.
According to the method, a power-off station and a power-off bus thereof are searched according to fault equipment information and a power grid topological structure, so that a power-on recovery plan is generated, risk preset analysis is performed on each power-on recovery plan, an optimal power-on recovery plan is obtained according to the preset analysis and serves as a final fault handling plan.
Example two
This embodiment provides a power grid fault handles scheme generation system, and this system includes: an acquisition module: the method comprises the steps of acquiring preset fault equipment information and a power grid topological structure; a judging module: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process; a generation module: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow; an analysis module: the method is used for carrying out preset analysis on the multiple complex power supply plans to obtain the optimal fault handling plan.
The preset fault equipment information comprises switch opening and closing state information, bus fault information, line fault information and total station voltage loss information.
Wherein, the judging module includes:
a first analysis unit: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
an acquisition information establishing unit: the system comprises a dispatching control end, a fault recovery analysis module, a fault analysis module and a fault analysis module, wherein the dispatching control end is used for acquiring power grid model information, equipment remote signaling data information, equipment parameters and equipment node connection relation information in the dispatching control end and establishing an initial section of the fault recovery analysis;
a judging unit: the system is used for judging whether the spare power automatic switching is started on the section of the fault equipment after the action of the tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
a second analysis unit: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
a search unit: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
Wherein, the generation module includes:
a descending unit: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
a first generation unit: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
a second generation unit: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
a third generation unit: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
Wherein, the analysis module includes:
a calculation unit: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
a sorting unit: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
The system is developed by adopting a framework with separated front and back ends, the front end adopts vue (a progressive framework for constructing a user interface), element-ui (a component library packaged based on vue) and axios (an HTTP client used for a browser and nodejs based on Promise) schemes for development, nginx (HTTP and a reverse proxy web server) is used for deployment, the back end adopts a springboot (open source framework), mybases (open source project iBatis) and a data query system for development, an ActiveMQ (open source message bus) is used for realizing instant message pushing, an image recognition part adopts OpenCV (computer vision and machine learning software library) and Tess4j (image recognition) schemes, topology analysis and plan list generation are developed by using python, and interaction with the back end is carried out through a message queue.
The system searches the power-off plant station and the power-off bus thereof according to the fault equipment information and the power grid topological structure, so that the power-off plans are generated, risk preset analysis is carried out on each power-off plan, the optimal power-off plan is obtained according to the preset analysis and serves as the final fault handling plan.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (10)
1. A power grid fault handling plan generation method is characterized by comprising the following steps:
s1: acquiring preset fault equipment information and a power grid topological structure;
s2: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process;
s3: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow;
s4: and carrying out preset analysis on the multiple complex power supply plans to obtain an optimal fault handling plan.
2. The grid fault handling plan generation method according to claim 1, wherein the preset fault device information includes switch on/off state information, bus fault information, line fault information, and total station voltage loss information.
3. The grid fault handling plan generation method according to claim 2, wherein the step S2 includes:
s21: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
s22: acquiring power grid model information, equipment remote signaling data information, equipment remote sensing data information, equipment parameters and equipment node connection relation information in a scheduling control end, and establishing an initial section for fault recovery analysis;
s23: judging whether the spare power automatic switching is started on a cross section of the fault equipment after the action of a tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
s24: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
s25: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
4. The grid fault handling plan generation method according to claim 1, wherein the step S3 includes:
s31: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
s32: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
s33: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
s34: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
5. The grid fault handling plan generation method according to claim 1, wherein the step S4 includes:
s41: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
s42: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
6. A grid fault handling plan generation system, comprising:
an acquisition module: the method comprises the steps of acquiring preset fault equipment information and a power grid topological structure;
a judging module: analyzing and obtaining a tripping switch around the fault equipment according to preset fault equipment information and a power grid topological structure, and obtaining position information of a current power-off station and a power-off bus by taking the tripping switch around the fault equipment as a fault source through a preset judgment process;
a generation module: generating a power restoration plan of the current power loss station and the power loss bus according to a preset power restoration flow;
an analysis module: the method is used for carrying out preset analysis on the multiple complex power supply plans to obtain the optimal fault handling plan.
7. The grid fault handling plan generating system of claim 6, wherein the preset fault device information includes switch on/off state information, bus fault information, line fault information, and total station voltage loss information.
8. The grid fault handling plan generation system of claim 7, wherein the determination module comprises:
a first analysis unit: according to the power grid topological structure and the switch opening and closing state information, the tripping switches around the fault equipment are topologically analyzed;
an acquisition information establishing unit: the system comprises a dispatching control end, a fault recovery analysis module, a fault analysis module and a fault analysis module, wherein the dispatching control end is used for acquiring power grid model information, equipment remote signaling data information, equipment parameters and equipment node connection relation information in the dispatching control end and establishing an initial section of the fault recovery analysis;
a judging unit: the system is used for judging whether the spare power automatic switching is started on the section of the fault equipment after the action of the tripping switch on the periphery of the fault equipment; scanning a whole-network bus, judging whether the bus is under voltage loss according to bus measurement information, and if so, judging whether the backup power automatic switching device is started according to an initial section;
a second analysis unit: when the spare power automatic switching device is started, writing action information of a spare power automatic switching device into an initial section, searching current power loss equipment by adopting a breadth-first search algorithm according to a power grid topological structure, equipment remote signaling data information and equipment remote sensing data information and a power grid tidal current direction from fault equipment, and then analyzing positions of a current power loss station and a current power loss bus thereof from the current power loss equipment;
a search unit: when the backup power automatic switching device is not started, the current power-off station and the position information of the current power-off bus thereof are directly searched under the initial section.
9. The grid fault handling plan generation system of claim 6, wherein the generation module comprises:
a descending unit: according to the descending order of the voltage grades, the power recovery is carried out on the power-lost power station at present, namely the power recovery with high priority is carried out;
a first generation unit: searching whether an external power supply is available for carrying out power restoration on the current power-losing bus, and if so, generating an external power restoration plan;
a second generation unit: searching whether a bus tie carries out power restoration on a current power-losing bus or not, and if so, generating a bus tie power restoration plan;
a third generation unit: searching whether a high-voltage main transformer of an original power supply source carries out power restoration on a current power-losing bus or not, and if so, generating a power restoration plan of the high-voltage main transformer of the original power supply source;
the weight coefficient of the external power supply complex electricity is larger than that of the bus-coupled complex electricity, and the weight coefficient of the bus-coupled complex electricity is larger than that of the high-voltage main transformer complex electricity of the original power supply.
10. The grid fault handling plan generation system of claim 6, wherein the analysis module comprises:
a calculation unit: calculating the weight values of an external power supply compound power plan, a bus-coupled compound power plan and a high-voltage main transformer compound power plan of an original power supply;
a sorting unit: and analyzing and sequencing the risk levels according to the weight values, and determining the complex power supply plan with low risk level as an optimal fault handling plan.
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