CN111478324A - Power station alarm analysis system - Google Patents
Power station alarm analysis system Download PDFInfo
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- CN111478324A CN111478324A CN202010388266.3A CN202010388266A CN111478324A CN 111478324 A CN111478324 A CN 111478324A CN 202010388266 A CN202010388266 A CN 202010388266A CN 111478324 A CN111478324 A CN 111478324A
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
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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
- Y04S10/16—Electric power substations
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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
- Y04S10/40—Display of information, e.g. of data or controls
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Abstract
The invention discloses a power station alarm analysis system, which comprises: the system comprises a local processing module, a centralized processing module, an alarm analysis module, a simulation analysis module and a map analysis query module. The power station alarm analysis system provided by the invention also provides the functions of intelligent alarm monitoring analysis, intelligent distribution network simulation analysis, map analysis query and the like when realizing the fault management functions of basic operation state evaluation, prevention control and recovery control.
Description
Technical Field
The invention relates to the field of power station management, in particular to a power station alarm analysis system.
Background
The power station system can be divided into a platform function, a basic analysis function, a line automation function, a distribution operation management function, a practical processing function, a fault control function and the like. The fault control comprises power distribution network topology analysis, state estimation, load flow calculation, load prediction, load transfer and supply, solution and loop analysis, network reconstruction, power supply capacity evaluation, risk evaluation, anti-misoperation and the like.
When the power station fault management is performed, how to integrate and provide comprehensive and reasonable simulation analysis and map support is an important content of the fault management.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the invention provides a power station alarm analysis system, which comprises: the system comprises a local processing module, a centralized processing module, an alarm analysis module, a simulation analysis module and a map analysis query module; wherein.
The local processing module is used for processing the data.
After a fault occurs, a local relay protection device of a substation outgoing line breaker or a line switch acts to trip the local relay protection device; and if the fault still exists after reclosing, the relay protection device acts again to enable the switch controlled by the relay protection device to trip.
If the fault is an overhead line or a cable-overhead mixed line, the automatic reclosing controller can control the corresponding switch to reclose, if the fault is transient, the normal power supply is recovered, and if the fault is permanent, the protection action is caused to trip again.
For an important user with double power supplies, when a fault occurs on one power supply path, the other power supply path is automatically switched to under the control of the automatic spare power automatic switching controller.
The centralized processing module is used for processing the data.
And confirming that the starting condition is that the outgoing line breaker or the line switch of the transformer substation has protection action trip.
The power distribution network control station collects information reported by each fault information collection device, and determines the time length set in the collection process according to the communication means adopted by the fault information collection devices.
After the fault information collection stage is finished, the power distribution network control station carries out fault positioning on the basis of mastering the global information, determines a minimum fault positioning area and a minimum fault automatic positioning area, displays a minimum fault automatic positioning result to a human-computer interface and stores a fault record.
After the fault positioning stage is finished, the power distribution network control station obtains a minimum fault isolation area and a minimum fault isolation area according to a fault automatic positioning result and the current network topology of the power distribution network, displays a human-computer interface, stores a fault record, automatically or manually confirms to execute corresponding switch remote control operation, and isolates the fault within the range of the minimum fault isolation area.
After the fault isolation stage is finished, the power distribution network control station automatically generates a power supply recovery scheme of the sound area according to the current network topology of the power distribution network and the load distribution of the sound area which is affected by the fault and has power failure before the fault, displays the power supply recovery scheme to a human-computer interface, stores a fault record, and automatically or manually confirms to execute corresponding switch remote control operation.
For a power distribution network containing a distributed power supply with regulation capacity, after a sound region power supply recovery stage is finished, if loads which are not recovered yet can be supplied with power through isolated islands of the distributed power supply and the operation stability of the isolated islands is ensured, a power distribution network control station automatically generates isolated island isolation schemes and black start schemes of all the isolated islands, displays a human-computer interface and stores fault records, and automatically or manually confirms to execute corresponding switch remote control operation.
The alarm analysis module performs information analysis, association and merging according to the line unit on the basis of the model and data of the alarm based on fault processing, and performs alarm hierarchical classification management according to the importance level and the hierarchical relationship. When an accident occurs, firstly, various collected information is utilized to carry out fault diagnosis, then an alarm is given comprehensively, and is prompted to a dispatcher in the forms of a light word board, a dialog box and the like, and finally a fault processing strategy is given.
The alarm analysis is used for screening, processing and displaying various event information so as to enable a dispatcher to carry out line control; the load change conditions and the operation risks of power protection users, important users and large users are monitored in real time through alarm analysis, wherein primary loads require power supply from buses of different substations, and secondary loads require double power supplies to be buses of different substations or different buses of the same substation.
The simulation analysis module is used for analyzing the simulation data.
And (5) simulating the control operation. The control operation of equipment such as a transformer substation, a switching station, a ring main unit, a switch and the like is simulated, and the same operation interface as real-time monitoring and control is provided. In a simulation state, all computers can pull and close the switch at will and analyze the power failure range, and the equipment fault causing regional power failure is analyzed by tracking the power failure region, so that the condition of a simulation power grid is intuitively reflected.
And simulating the operation mode. And simulating an operation scheme under the overload condition, adjusting and calculating the operation mode according to the overload condition of the line and the predicted overload condition, and simulating a manual/automatic handling mode of the accident.
And (6) fault simulation. Various faults at any place and state changes of the system are simulated, and a reference scheme is provided for an actual operation mode. In a simulation research mode, a hypothetical fault can be artificially set, and the processing process of the fault, including the fault positioning, the isolation process and the preview of the main station recovery strategy, can be automatically demonstrated.
And (5) simulation testing. The simulation test environment based on the line automation technology provides simulation of a power distribution network, a distributed power supply, faults, an algorithm and result matching.
And the map analysis query module is used for analyzing the map.
And (4) analyzing the shortest path, automatically analyzing and generating a shortest path graph according to the set starting point and the set ending point, and performing simulated navigation. And analyzing the power supply range, and simulating and displaying the power supply range of a certain transformer substation on a map. The method comprises the steps of performing quasi-three-dimensional simulation tour on a line, selecting a starting point of the tour on the line, performing simulation tour according to the advancing direction of the line, and automatically reminding a special area, a dangerous point, cross spanning information and defect information around a line path in the tour process. And (4) simulating and inspecting the cable line pipeline, checking the cable laying condition in the pipeline, and measuring the distance and the angle. And (4) specifying a track area or an administrative area, and automatically analyzing and counting the power grid equipment in the area. Path planning: after a track line is drawn on a map, the running line crossed by the track line can be automatically identified and analyzed to form a report; and counting the crossing span related to the line, counting the range of the line and the tower related to the planned railway or expressway in a certain range.
And a big and small graph mechanism is provided, the grid structure is displayed in an all-around manner, and the big graph and the small graph automatically correspond to each other according to the topological connection relation. On one hand, the system contact diagram and the station interior diagram of the high-voltage distribution network and the system contact diagram and the line single line diagram of the medium-voltage distribution network automatically correspond and synchronously operate; on the other hand, the related operations of setting, listing, removing and jumping can be operated on any type of graphs and automatically synchronized. The method comprises the following steps of constructing a power distribution network, connecting a tower with a tower pole, connecting a tower pole with a tower pole, and connecting a tower pole with a tower pole, wherein the operations of disconnecting and connecting and jumping are operations in the construction and operation of the power distribution network, the disconnecting and connecting refers to disconnecting of a head on the tower pole, and the jumping refers to short-circuit operation between double return lines on the.
In the area examination, a user defines an area, and all lines and devices in the area are selected. Including viewing the geographic distribution of devices by device type. The query is fuzzy. When a user needs to search a certain distribution line or equipment, the specific position is not known, and the exact name is not known, the type of the equipment to be checked is selected from a checking range pull-down list through a fuzzy checking and inquiring window, specifically, when the type of the equipment is a distribution transformer, a keyword of the distribution transformer to be checked is input, the distribution transformer to be checked is selected from a user list, a positioning button is clicked, and the distribution transformer is displayed in the center of a map window and flickers through fuzzy inquiry. Or the distribution transformer can be directly double-clicked in the query result, and the distribution transformer can also be positioned.
And (4) thematic map management, namely extracting the electric topological structure of the power grid from the geographical map maintained by the modeling tool to generate a single line map and a system map. The generated map can be correspondingly and automatically updated along with the modification of the geographical map, the single line map is the logic development of a single line, the equipment to which the line belongs is searched from the geographical map according to the hierarchical relationship and the electrical connection relationship of branches, and the relative position relationship is determined according to the principles of horizontal, vertical and non-overlapping space. After the special line graph is modified, corresponding deletion and addition operations are carried out in the single line graph through topology searching and comparison, and the distances between the deleted and added devices are adjusted by adopting a space pushing and compressing algorithm, so that the automatic generation, increment updating and approval processes from the geographical graph to the single line graph are completed. Aiming at the automatic generation of the single line diagram, a user specifies a line, and the topology of the line, including a main trunk, all branches, all distribution transformers, switches and drop-out fuse equipment, is extracted from an internal primary diagram such as a geographical diagram and a switching station, and is displayed in a horizontal, flat and vertical mode. And manual layout adjustment is performed, so that a user can drag equipment, adjust the directions of the distribution transformer and the switch, keep the connection of the electrical connecting lines and the electrical connection relation correct, and modify the position, font size and character direction of equipment marking. After a primary map modification inside the geographical map and the switchyard, it is detected that the single-line map needs to be updated. The updated single line diagram reflects the new topological relation, including addition, removal and reconnection of the line and the equipment. For each single line diagram, the system has three states, formal draft, and archived draft. Official draft is a single line diagram seen by all network owners; draft is a single line diagram being updated, visible only to the designer.
The power station alarm analysis system provided by the invention also provides the functions of intelligent alarm monitoring analysis, intelligent distribution network simulation analysis, map analysis query and the like when realizing the fault management functions of basic operation state evaluation, prevention control and recovery control.
Drawings
Fig. 1 is a structural diagram of a power station alarm analysis system according to the present invention.
Detailed Description
As shown in fig. 1, the present invention provides a power station alarm analysis system, which includes: the system comprises a local processing module, a centralized processing module, an alarm analysis module, a simulation analysis module and a map analysis query module; wherein.
The local processing module is used for processing the data.
After a fault occurs, a local relay protection device of a substation outgoing line breaker or a line switch acts to trip the local relay protection device; and if the fault still exists after reclosing, the relay protection device acts again to enable the switch controlled by the relay protection device to trip.
If the fault is an overhead line or a cable-overhead mixed line, the automatic reclosing controller can control the corresponding switch to reclose, if the fault is transient, the normal power supply is recovered, and if the fault is permanent, the protection action is caused to trip again.
For an important user with double power supplies, when a fault occurs on one power supply path, the other power supply path is automatically switched to under the control of the automatic spare power automatic switching controller.
The centralized processing module is used for processing the data.
And confirming that the starting condition is that the outgoing line breaker or the line switch of the transformer substation has protection action trip.
The power distribution network control station collects information reported by each fault information collection device, and determines the time length set in the collection process according to the communication means adopted by the fault information collection devices.
After the fault information collection stage is finished, the power distribution network control station carries out fault positioning on the basis of mastering the global information, determines a minimum fault positioning area and a minimum fault automatic positioning area, displays a minimum fault automatic positioning result to a human-computer interface and stores a fault record.
After the fault positioning stage is finished, the power distribution network control station obtains a minimum fault isolation area and a minimum fault isolation area according to a fault automatic positioning result and the current network topology of the power distribution network, displays a human-computer interface, stores a fault record, automatically or manually confirms to execute corresponding switch remote control operation, and isolates the fault within the range of the minimum fault isolation area.
After the fault isolation stage is finished, the power distribution network control station automatically generates a power supply recovery scheme of the sound area according to the current network topology of the power distribution network and the load distribution of the sound area which is affected by the fault and has power failure before the fault, displays the power supply recovery scheme to a human-computer interface, stores a fault record, and automatically or manually confirms to execute corresponding switch remote control operation.
For a power distribution network containing a distributed power supply with regulation capacity, after a sound region power supply recovery stage is finished, if loads which are not recovered yet can be supplied with power through isolated islands of the distributed power supply and the operation stability of the isolated islands is ensured, a power distribution network control station automatically generates isolated island isolation schemes and black start schemes of all the isolated islands, displays a human-computer interface and stores fault records, and automatically or manually confirms to execute corresponding switch remote control operation.
The alarm analysis module performs information analysis, association and merging according to the line unit on the basis of the model and data of the alarm based on fault processing, and performs alarm hierarchical classification management according to the importance level and the hierarchical relationship. When an accident occurs, firstly, various collected information is utilized to carry out fault diagnosis, then an alarm is given comprehensively, and is prompted to a dispatcher in the forms of a light word board, a dialog box and the like, and finally a fault processing strategy is given.
The alarm analysis is used for screening, processing and displaying various event information so as to enable a dispatcher to carry out line control; the load change conditions and the operation risks of power protection users, important users and large users are monitored in real time through alarm analysis, wherein primary loads require power supply from buses of different substations, and secondary loads require double power supplies to be buses of different substations or different buses of the same substation.
The simulation analysis of the power distribution network can provide a realistic simulation environment for operators, and realize the functions of running simulation, dispatcher simulation training and the like, and the normal monitoring of the system is not influenced by the simulation operation, and the simulation analysis mainly comprises the following functions.
The simulation analysis module is used for analyzing the simulation data.
And (5) simulating the control operation. The control operation of equipment such as a transformer substation, a switching station, a ring main unit, a switch and the like is simulated, and the same operation interface as real-time monitoring and control is provided. In a simulation state, all computers can pull and close the switch at will and analyze the power failure range, and the equipment fault causing regional power failure is analyzed by tracking the power failure region, so that the condition of a simulation power grid is intuitively reflected.
And simulating the operation mode. And simulating an operation scheme under the overload condition, adjusting and calculating the operation mode according to the overload condition of the line and the predicted overload condition, and simulating a manual/automatic handling mode of the accident.
And (6) fault simulation. Various faults at any place and state changes of the system are simulated, and a reference scheme is provided for an actual operation mode. In a simulation research mode, a hypothetical fault can be artificially set, and the processing process of the fault, including the fault positioning, the isolation process and the preview of the main station recovery strategy, can be automatically demonstrated.
And (5) simulation testing. The simulation test environment based on the line automation technology provides simulation of a power distribution network, a distributed power supply, faults, an algorithm and result matching.
And the map analysis query module is used for analyzing the map.
And (4) analyzing the shortest path, automatically analyzing and generating a shortest path graph according to the set starting point and the set ending point, and performing simulated navigation. And analyzing the power supply range, and simulating and displaying the power supply range of a certain transformer substation on a map. The method comprises the steps of performing quasi-three-dimensional simulation inspection on lines (overhead lines, cable lines and hybrid erection lines), selecting a starting point of the line inspection, performing simulation inspection according to the advancing direction of the lines, and automatically reminding special areas, dangerous points, cross spanning information and defect information around the line path in the inspection process. And (4) simulating and inspecting the cable line pipeline, checking the cable laying condition in the pipeline, and measuring the distance and the angle. And (4) specifying a track area or an administrative area, and automatically analyzing and counting the power grid equipment in the area. Path planning: after a track line is drawn on a map, the running line crossed by the track line can be automatically identified and analyzed to form a report; and counting the crossing span related to the line, counting the range of the line and the tower related to the planned railway or expressway in a certain range.
And a big and small graph mechanism is provided, the grid structure is displayed in an all-around manner, and the big graph and the small graph automatically correspond to each other according to the topological connection relation. On one hand, the system contact diagram and the station interior diagram of the high-voltage distribution network and the system contact diagram and the line single line diagram of the medium-voltage distribution network automatically correspond and synchronously operate; on the other hand, the related operations of setting, listing, removing and jumping can be operated on any type of graphs and automatically synchronized. The method comprises the following steps of constructing a power distribution network, connecting a tower with a tower pole, connecting a tower pole with a tower pole, and connecting a tower pole with a tower pole, wherein the operations of disconnecting and connecting and jumping are operations in the construction and operation of the power distribution network, the disconnecting and connecting refers to disconnecting of a head on the tower pole, and the jumping refers to short-circuit operation between double return lines on the.
In the area examination, a user defines an area (a rectangle, a circle, or a plurality of rows), and all lines and devices in the area are selected. Including viewing the geographic distribution of devices by device type. The query is fuzzy. When a user needs to search a certain distribution line or equipment, the specific position is not known, and the exact name is not known, the type of the equipment to be checked is selected from a checking range pull-down list through a fuzzy checking and inquiring window, specifically, when the type of the equipment is a distribution transformer, a keyword of the distribution transformer to be checked is input, the distribution transformer to be checked is selected from a user list, a positioning button is clicked, and the distribution transformer is displayed in the center of a map window and flickers through fuzzy inquiry. Or the distribution transformer can be directly double-clicked in the query result, and the distribution transformer can also be positioned.
And (4) thematic map management, namely extracting the electric topological structure of the power grid from the geographical map maintained by the modeling tool to generate a single line map and a system map. The generated map can be correspondingly and automatically updated along with the modification of the geographical map, the single line map is the logic development of a single line, the equipment to which the line belongs is searched from the geographical map according to the hierarchical relationship and the electrical connection relationship of branches, and the relative position relationship is determined according to the principles of horizontal, vertical and non-overlapping space. After the special line graph is modified, corresponding deletion and addition operations are carried out in the single line graph through topology searching and comparison, and the distances between the deleted and added devices are adjusted by adopting a space pushing and compressing algorithm, so that the automatic generation, increment updating and approval processes from the geographical graph to the single line graph are completed. Aiming at the automatic generation of the single line diagram, a user specifies a line, the topology of the line is extracted from an internal primary diagram such as a geographical diagram, a switching station and the like, and the topology comprises a main trunk, all branches, all distribution transformers, switches (including a pole switch and a switch cabinet in the switching station) and drop-out fuse equipment, and the topology is displayed in a horizontal, flat and vertical mode. And manual layout adjustment is performed, so that a user can drag equipment, adjust the directions of the distribution transformer and the switch, keep the connection of the electrical connecting lines and the electrical connection relation correct, and modify the position, font size and character direction of equipment marking. After a primary map modification inside the geographical map and the switchyard, it is detected that the single-line map needs to be updated. The updated single line diagram reflects the new topological relation, including addition, removal and reconnection of the line and the equipment. For each single line diagram, the system has three states, formal draft, and archived draft. Official draft is a single line diagram seen by all network owners; draft is a single line diagram being updated, visible only to the designer.
The determining of the minimum fault location area and the minimum fault automatic location area includes determining a fault point or a fault range according to fault information reported by an installed fault information acquisition device, and further determining the minimum fault location area and the minimum fault automatic undetermined area, where the fault information acquisition devices are divided into two types: one type is a transmission type fault information acquisition device which can transmit fault information to a power distribution network control station; the other type is a local fault information acquisition device which cannot transmit fault information to a power distribution network control station; the fault information comprises fault current exceeding setting value, fault power direction, protection action, switch state and the like; the minimum fault positioning area is an area which is formed by surrounding of the fault information acquisition device and does not contain the fault information acquisition device any more; the minimum fault automatic positioning area is an area which is surrounded by the transmission type fault information acquisition devices and does not contain the transmission type fault information acquisition devices any more, and is called as a minimum fault automatic positioning area.
The minimum fault positioning area is a minimum area for carrying out fault positioning on the power distribution network in an automatic mode or a manual mode according to fault information, and the minimum fault automatic positioning area is a minimum area for carrying out fault positioning on the power distribution network control station; the minimum fault localization area includes one or more of the minimum fault localization areas.
Wherein, distribution network fault isolation relies on the switch of installation to carry out, the switch can be divided into two kinds: one is a switch capable of being remotely operated and is a remote-controllable switch, and the other is a switch incapable of being remotely operated and is a manual switch; the minimum fault isolation area is an area which is surrounded by the switches and does not contain the switches any more; the minimum fault automatic isolation area is an area which is surrounded by the remote-controlled switch and does not contain the remote-controlled switch any more.
The minimum fault isolation area is a minimum area for fault isolation of the power distribution network in a remote control mode or a manual mode, and the minimum fault automatic isolation area is a minimum area for fault isolation of the power distribution network control station in a remote control mode; the minimum fault isolation zone comprises one or more of the minimum fault isolation zones.
Further, the element enclosing the region is an end point of the region, for the minimum fault location region, the end point is a fault information acquisition device and a line end, and for the minimum fault automatic location region, the end point is a transmission type fault information acquisition device and a line end; for the minimum fault isolation zone, the endpoints are manual switches and line tips, and for the minimum fault isolation zone, the endpoints are remote control switches and line tips.
The local processing module, the centralized processing module, the alarm analysis module, the simulation analysis module and the map analysis query module realize module functions through corresponding processes and threads, the modules are connected with each other through logic or electricity, and the specific functions of the modules can be realized by program codes stored in a physical processor execution memory.
The power station alarm analysis system provided by the invention also provides the functions of intelligent alarm monitoring analysis, intelligent distribution network simulation analysis, map analysis query and the like when realizing the fault management functions of basic operation state evaluation, prevention control and recovery control.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. A power station alarm analysis system, comprising: the system comprises a local processing module, a centralized processing module, an alarm analysis module, a simulation analysis module and a map analysis query module; wherein,
the local processing module is configured to:
after a fault occurs, a local relay protection device of a substation outgoing line breaker or a line switch acts to trip the local relay protection device; if the fault still exists after reclosing, the relay protection device acts again to enable the switch controlled by the relay protection device to trip;
if the fault is an overhead line or a cable-overhead mixed line, the automatic reclosing controller can control the corresponding switch to reclose, if the fault is instantaneous, the normal power supply is recovered, and if the fault is permanent, the protection action is caused to trip again;
for an important user with double power supplies, when a fault occurs on one power supply path, the other power supply path is automatically switched to under the control of the automatic spare power automatic switching controller;
the centralized processing module is used for:
confirming that the starting condition is that the transformer substation outgoing line breaker or the line switch has protection action tripping;
the power distribution network control station collects information reported by each fault information acquisition device, and determines the time length set in the collection process according to the communication means adopted by the fault information acquisition devices;
after the fault information collection stage is finished, the power distribution network control station carries out fault positioning on the basis of mastering the global information, determines a minimum fault positioning area and a minimum fault automatic positioning area, displays the minimum fault automatic positioning result to a human-computer interface and stores the minimum fault automatic positioning result into a fault record;
after the fault positioning stage is finished, the power distribution network control station obtains a minimum fault isolation area and a minimum fault automatic isolation area according to a fault automatic positioning result and the current network topology of the power distribution network, displays a human-computer interface, stores a fault record, automatically or manually confirms to execute corresponding switch remote control operation, and isolates the fault in the range of the minimum fault automatic isolation area;
after the fault isolation stage is finished, the power distribution network control station automatically generates a power supply recovery scheme of a sound area according to the current network topology of the power distribution network and the load distribution of the sound area which is affected by the fault and has power failure before the fault, displays the power supply recovery scheme to a human-computer interface, stores a fault record and automatically or manually confirms to execute corresponding switch remote control operation;
for a power distribution network containing a distributed power supply with regulation capacity, after a healthy area power supply recovery stage is finished, if the load which is not recovered yet can be supplied with power through an isolated island of the distributed power supply and the operation stability of the isolated island is ensured, a power distribution network control station automatically generates an isolated island isolation scheme and a black start scheme of each isolated island, displays a human-computer interface and stores fault records, and automatically or manually confirms to execute corresponding switch remote control operation;
the alarm analysis module performs information analysis, association and merging according to the line unit on the basis of a model and data of the alarm based on fault processing, and performs alarm hierarchical classification management according to the importance level and the hierarchical relationship; when an accident occurs, firstly, various collected information is utilized to carry out fault diagnosis, then an alarm is given comprehensively, and is prompted to a dispatcher in the forms of a light word board, a dialog box and the like, and finally a fault processing strategy is given;
the alarm analysis is used for screening, processing and displaying various event information so as to enable a dispatcher to carry out line control; monitoring the load change conditions and the operation risks of power protection users, important users and large users in real time through alarm analysis, wherein primary loads require power supply from buses of different substations, and secondary loads require dual power supplies to be buses of different substations or different buses of the same substation;
the simulation analysis module is used for:
simulating control operation; simulating the control operation of equipment such as a transformer substation, an opening and closing station, a ring main unit, a switch and the like, and providing an operation interface which is the same as real-time monitoring and control; in a simulation state, all computers can pull and close the switch at will and analyze the power failure range, and the equipment fault causing regional power failure is analyzed by tracking the power failure region, so that the condition of a simulation power grid is intuitively reflected;
simulating an operation mode; simulating an operation scheme under the overload condition, adjusting and calculating an operation mode according to the overload of the line and the predicted overload condition, and simulating a manual/automatic processing mode of an accident;
fault simulation; simulating various faults and system state changes at any place, and providing a reference scheme for an actual operation mode; in a simulation research mode, a hypothetical fault can be artificially set, and the processing process of the fault, including the fault positioning, the isolation process and the preview of the main station recovery strategy, can be automatically demonstrated;
carrying out simulation test; the simulation test environment based on the line automation technology provides the simulation of the power distribution network, the distributed power supply, the fault, the algorithm and the result matching;
the map analysis query module is used for:
analyzing the shortest path, automatically analyzing and generating a shortest path graph according to the set starting point and the set ending point, and performing simulated navigation; analyzing a power supply range, and simulating and displaying the power supply range of a certain transformer substation on a map; the method comprises the following steps of performing quasi-three-dimensional simulation inspection on a line, selecting a starting point of the line inspection, performing simulation inspection according to the advancing direction of the line, and automatically reminding a special area, a dangerous point, cross spanning information and defect information around a line path in the inspection process; the method comprises the following steps of (1) simulating inspection of a cable line pipeline, checking the cable laying condition in the pipeline, and measuring the distance and the angle; a track area or an administrative area is designated, and the power grid equipment in the area can be automatically analyzed and counted; path planning: after a track line is drawn on a map, the running line crossed by the track line can be automatically identified and analyzed to form a report; counting the crossing span related to the line, and counting the range of the line and the tower related to the planned railway or expressway within a certain range;
providing a big and small graph mechanism, displaying the grid structure in an all-around way, and automatically corresponding the big graph and the small graph according to the topological connection relation; on one hand, the system contact diagram and the station interior diagram of the high-voltage distribution network and the system contact diagram and the line single line diagram of the medium-voltage distribution network automatically correspond and synchronously operate; on the other hand, the related operations of setting, listing, removing and jumping can be operated on any type of graphs and automatically synchronized; the method comprises the following steps that the operation of removing and jumping is the operation in the construction and operation of the power distribution network, the removing and jumping refers to the removal of a lap joint on a disconnected tower, and the jumping refers to the short-circuit operation between double return lines on the same tower;
region examination, wherein a user defines a region, and all lines and devices in the region are selected; including, viewing the geographic distribution of devices by device type; fuzzy query; when a user needs to search a certain distribution line or equipment, specific positions are not known, and exact names are not known, the type of the equipment to be checked is selected from a checking range pull-down list through a fuzzy checking and inquiring window, specifically, when the type of the equipment is a distribution transformer, keywords of the distribution transformer to be checked are input, the distribution transformer to be checked is selected from a user list, a positioning button is clicked, and the distribution transformer is displayed in the center of a map window and flickers in a fuzzy inquiry; or the distribution transformer can be directly double-clicked in the query result, and the distribution transformer can also be positioned;
thematic map management, namely extracting a power grid electrical topological structure from a geographical map maintained by a modeling tool to generate a single line map and a system map; the generated map can be correspondingly and automatically updated along with the modification of a geographical map, the single line map is used for logically expanding a single line, searching equipment to which the line belongs from the geographical map according to the hierarchical relationship and the electrical connection relationship of branches, and determining the relative position relationship according to the principles of horizontal, vertical and non-overlapping space; after the special line graph is modified, corresponding deletion and addition operations are carried out in the single line graph through topology search and comparison, and the distances between the deleted and added devices are adjusted by adopting a space pushing and compressing algorithm, so that the automatic generation, increment updating and approval processes from the geographical graph to the single line graph are completed; aiming at the automatic generation of a single line diagram, a user specifies a line, and the topology of the line, including a main trunk, all branches, all distribution transformers, switches and drop-out fuse equipment, is extracted from an internal primary diagram such as a geographical diagram and a switching station and is displayed in a horizontal, flat and vertical mode; manual layout adjustment is carried out, so that a user can drag equipment, adjust the directions of a distribution transformer and a switch, keep the connection of electrical connecting lines and the electrical connection relation correct, and modify the position, the font size and the character direction of equipment marking; detecting that a single line diagram needs to be updated after a geographical diagram and a primary diagram modification inside a switching station; the updated single line diagram reflects a new topological relation, including addition, removal and reconnection of lines and equipment; for each single line diagram, the system has three states of official draft, draft and archived draft; official draft is a single line diagram seen by all network owners; draft is a single line diagram being updated, visible only to the designer.
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