CN114825621A - Power grid accident modeling management system - Google Patents
Power grid accident modeling management system Download PDFInfo
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- CN114825621A CN114825621A CN202210375792.5A CN202210375792A CN114825621A CN 114825621 A CN114825621 A CN 114825621A CN 202210375792 A CN202210375792 A CN 202210375792A CN 114825621 A CN114825621 A CN 114825621A
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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
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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
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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
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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
- 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
- H02J13/00002—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 monitoring
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
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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
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
- H02J13/0004—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers involved in a protection system
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- 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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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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
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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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
- Y04S10/18—Systems supporting electrical power generation, transmission or distribution using switches, relays or circuit breakers, e.g. intelligent electronic devices [IED]
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Human Computer Interaction (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a power grid accident modeling management system, which comprises: the system comprises an accident handling module, a line modeling module and a pipeline management module. The power grid accident modeling management system provided by the invention realizes simulation analysis of the power distribution network, can provide a realistic simulation environment for operators, realizes functions of running simulation, dispatcher simulation training and the like, does not influence normal monitoring of the system through simulation operation, and is convenient for management of line equipment.
Description
The application is a divisional application, the original application is an invention patent named as 'a power grid accident modeling management system', the application number of the original application is '2020103890867', and the application date is 5, month and 9 days in 2020.
Technical Field
The invention relates to the field of power grid management, in particular to a power grid accident modeling management system.
Background
In the distribution network, because data acquisition points are many, the face is wide, and spatial grid structure changes frequently, and distribution automation's construction condition has great gap with big electric wire netting, and monitoring point covers incompletely, causes distribution network's whole observability not strong. In addition, various real-time monitoring signals have certain relevance, for example, switch deflection is often triggered by protection action, the relevance of telemetering out-of-limit and power flow disturbance is strong, and measurement sudden change and fault signals often reflect the same event.
In consideration of these practical situations, how to model the accident of the power grid in advance so as to manage each line device based on the modeling is an urgent problem to be solved in the power distribution network.
Disclosure of Invention
In order to solve the defects and shortcomings in the prior art, the power grid accident modeling management system comprises: the system comprises an accident handling module, a line modeling module and a pipeline management module; wherein.
And the accident handling module is used for.
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 corresponding switches to reclose, if the fault is transient, 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.
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; inquiring and demonstrating faults, inquiring a dynamic information database to obtain an accurate operation mode section of any historical time point, and simultaneously acquiring a current power grid model and a current graph; when fault tripping occurs, automatically memorizing related data according to the corresponding relation defined by a user, and demonstrating the fault process of the power grid; specifically, a power grid model of a system during fault, a graph during fault and an event during fault occurrence are automatically matched and called according to a given fault recall moment, an event sequence occurring at that time is demonstrated on the basis, and a user is supported to control the progress of demonstration.
The line modeling module performs modeling operation on overhead lines and cable lines outside the substation and the switching station. The line modeling supports all main equipment in the transmission and distribution network, including main equipment of 35kV and 10kV distribution networks; the line modeling module is used for.
Providing a tool to complete equipment addition, deletion and movement operations; finishing topology adjustment and maintenance; the multi-line transmission line can support multiple lines on the same pole; supporting multi-step undo/redo before saving to a database; the method supports automatic capture of electrical connection points, and the current position can automatically jump to the end point and the line section of the equipment only by approaching a cursor to the target equipment; the distributed collaborative modeling is supported, multiple users can simultaneously model different parts of the distribution network, and two persons cannot modify the same equipment; a topology correctness checking and repairing tool is provided.
Equipment editing, which supports the modeling of all types of distribution network equipment and the editing of parameter attributes, and comprises the following steps: newly building, moving and deleting various devices in a power distribution network; editing and checking various device attribute parameters and image data; editing the actual contour of the transformer substation; editing positions of outlet ports of various stations; manually setting the marking positions of various devices automatically arranged by the system; and adding and deleting transformers, generators and high-voltage motors in the power distribution station and setting parameter attributes. And providing an equipment template editing tool for a user to combine elements as tools into an equipment template of common equipment, wherein the equipment template comprises a breaker cabinet, a load switch cabinet, a grounding cabinet and the like of common models.
The modeling of the wiring diagram inside the station supports the editing and storing of the primary wiring diagram of the electrical inside the substation, the distribution station, the box-type substation, the switching station, the ring main unit and the cable branch box distribution station, and provides a graphic symbol library of distribution equipment based on the requirement of the power grid standard, wherein the graphic symbol library comprises a distribution transformer, a load switch, a circuit breaker, an isolating switch, a bus, a current transformer and a capacitor, and the graphic symbol library is used for editing the primary wiring diagram. The various devices are provided in the form of device primitives in the internal wiring diagram editing. And automatically establishing topological connection relations among various electrical devices in the combined equipment by using an internal wiring diagram established by the equipment elements.
The pipeline management module is used for managing the pipeline.
Underground pipe network editing management, underground pipe network management provide tunnel, cable pit, examination well/worker well, pipeline, cable prevent public facilities such as hot wall's modeling and maintenance, include.
And (5) modeling facilities. And carrying out graphical modeling on the underground pipe network facilities by using a modeling tool, and automatically maintaining topological relations, incidence relations and dependency relations according to the power grid model rules. And maintaining the attribute. The maintenance of public attribute parameters of the underground pipe network facilities is realized through the attribute maintenance function, and uploading, association and deletion of accessories related to the attributes of the underground pipe network facilities are provided. And (6) checking and inquiring. And device cards and machine account checking and statistics of various facilities are supported. Wireline well deployment. Providing a maintenance function for a development drawing of the cable well, wherein the development drawing is provided with a plurality of sections of pipe ditches; pipe hole, reserved cable line, cable line connector indication, north arrow and indication road information; the expansion drawing of the cable well and the pipe hole number in the section can be displayed; for irregular cable wells with more than four profiles, manual adjustment of the new trench profile is allowed. Cable laying cross-section. And providing a maintenance cable laying section diagram, wherein the cable laying section diagram supports graphic operation and graphic editing, and supports adding buried pipes and establishing cable buried pipe association.
Optical cable network management for managing optical cable lines, optical cable segments, fiber cores, and splicing equipment resources, including.
And managing the optical cable and the fiber core. Management of the cable is accomplished through the lines and cable sections. An optical cable route is made up of one or more optical cable segments. Adding of optical cable sections: is automatically generated during the process of laying the optical cable. Deleting the optical cable segment: after the optical cable section is appointed, the deletion of all attribute information of the optical cable section is completed, and occupied pipeline network resources and terminal occupation of connected splicing equipment and an optical fiber distribution frame are released simultaneously. Fiber core resource management: establishing fiber core data according to an optical cable template in the modeling process of the optical cable section, and supporting fiber core technical parameters to be distributed; and displaying the use of the fiber core according to the service access after the optical service is opened. A start point and an end point are designated, and optical fiber connection information of optical paths constituting the start point and the end point are given. And double naming of fiber core positioning and optical cable lines according to specified distances is supported.
And continuing equipment management. And the addition, the movement and the deletion on the continuous equipment graph are supported. And supporting the internal continuation diagram of the continuation equipment, wherein the internal continuation diagram can be imported from the template or drawn manually. Supporting the welding of the fiber core and supporting the automatic display of the core color. Supporting the editing and query of basic data of the continuous equipment. When splicing equipment is added, the optical cable section can be automatically cut. Trunk splice deletion can automatically merge cable segments. Joint topology analysis and topology verification are supported.
Topology management and automatic mapping. In the optical cable network, the start/stop points, the central office station and the splicing equipment of the optical cable section are used as nodes in the topology, and the optical cable section is used as a line in the logic topology. And generating a topological routing graph of the optical cable network according to the association relationship of the nodes and the lines. And forming a logic topological diagram of each system according to the service carried by the fiber core of the optical cable, and supporting a user in the system diagram to adjust the position in the line equipment diagram to enable the line equipment diagram to be horizontal and vertical, wherein the adjustment of the equipment position does not influence the actual geographical position of the equipment in the geographical diagram. The user in the system diagram is supported to edit the line equipment data, and the data is automatically synchronized with the geographic diagram. And the functions of inquiring, positioning and counting the optical cable network resources in the system diagram are supported.
Checking, positioning and statistical management, checking and inquiring of cable resources is used for inquiring, positioning and counting the occupation and use conditions of cable segment data and optical cable core network resources, checking and inquiring of optical cable routes according to circuits, displaying the cable segments and the connection devices passing through the routes, and clicking devices in the routes to display device attribute data. Various modes of checking and counting of geographic maps are supported. Including statistical management of cable lines, cable segments, wire pairs, and distribution boxes.
The power grid accident modeling management system provided by the invention realizes simulation analysis of the power distribution network, can provide a realistic simulation environment for operators, realizes functions of running simulation, dispatcher simulation training and the like, does not influence normal monitoring of the system through simulation operation, and is convenient for management of line equipment.
Drawings
Fig. 1 is a structural diagram of a power grid accident modeling management system of the present invention.
Detailed Description
As shown in fig. 1, the grid accident modeling management system of the present invention includes: the system comprises an accident handling module, a line modeling module and a pipeline management module; wherein.
And the accident handling module is used for.
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.
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; inquiring and demonstrating faults, inquiring a dynamic information database to obtain an accurate operation mode section of any historical time point, and simultaneously acquiring a current power grid model and a current graph; when fault tripping occurs, automatically memorizing related data according to the corresponding relation defined by a user, and demonstrating the fault process of the power grid; specifically, a power grid model of a system during fault, a graph during fault and an event during fault occurrence are automatically matched and called according to a given fault recall moment, an event sequence occurring at that time is demonstrated on the basis, and a user is supported to control the progress of demonstration.
The operation of establishing and maintaining the electrical topology is contained in simple and visual drawing operation, and complicated topological relation specifying operation is avoided.
The line modeling module performs modeling operation on overhead lines and cable lines outside the substation and the switching station. The line modeling supports all main equipment in the transmission and distribution network, including main equipment of 35kV and 10kV distribution networks; the line modeling module is used for.
Providing a tool to complete equipment addition, deletion and movement operations; finishing topology adjustment and maintenance; the multi-line transmission line can support multiple lines on the same pole; supporting multi-step undo/redo before saving to a database; the method supports automatic capture of electrical connection points, and the current position can automatically jump to the end point and the line section of the equipment only by approaching a cursor to the target equipment; the distributed collaborative modeling is supported, multiple users can simultaneously model different parts of the distribution network, and two persons cannot modify the same equipment; a topology correctness checking and repairing tool is provided.
Equipment editing, which supports the modeling of all types of distribution network equipment and the editing of parameter attributes, and comprises the following steps: newly building, moving and deleting various devices in a power distribution network; editing and checking various device attribute parameters and image data; editing the actual contour of the transformer substation; editing positions of outlet ports of various stations; manually setting the marking positions of various devices automatically arranged by the system; and adding and deleting transformers, generators and high-voltage motors in the power distribution station and setting parameter attributes. And providing an equipment template editing tool for a user to combine elements as tools into an equipment template of common equipment, wherein the equipment template comprises a breaker cabinet, a load switch cabinet, a grounding cabinet and the like of common models.
The modeling of the wiring diagram inside the station supports the editing and storing of the primary wiring diagram of the electrical inside the substation, the distribution station, the box-type substation, the switching station, the ring main unit and the cable branch box distribution station, and provides a graphic symbol library of distribution equipment based on the requirement of the power grid standard, wherein the graphic symbol library comprises a distribution transformer, a load switch, a circuit breaker, an isolating switch, a bus, a current transformer and a capacitor, and the graphic symbol library is used for editing the primary wiring diagram. The various devices are provided in the form of device primitives in the internal wiring diagram editing. And automatically establishing topological connection relations among various electrical devices in the combined equipment by using an internal wiring diagram established by the equipment elements.
With the change of the distribution network, the workload of modifying and releasing the pipeline is large, which is easy to cause inconsistency between the pipeline and the field condition, resulting in potential safety hazard.
The pipeline management module is used for managing the pipeline.
Underground pipe network editing management, underground pipe network management provide tunnel, cable pit, examination well/worker well, pipeline, cable prevent public facilities such as hot wall's modeling and maintenance, include.
And (5) modeling facilities. And carrying out graphical modeling on the underground pipe network facilities by using a modeling tool, and automatically maintaining topological relations, incidence relations and dependency relations according to the power grid model rules. And maintaining the attribute. The maintenance of public attribute parameters of the underground pipe network facilities is realized through the attribute maintenance function, and uploading, association and deletion of accessories related to the attributes of the underground pipe network facilities are provided. And (6) checking and inquiring the statistics. And device cards and machine account checking and statistics of various facilities are supported. And (4) unfolding the cable well. Providing a maintenance function of a cable well development drawing, wherein the development drawing is provided with a plurality of pipe channels; pipe hole, reserved cable line, cable line connector indication, north arrow and indication road information; the expanded view (four sections) of the cable well and the pipe hole numbers in the section can be displayed; for irregular cable wells with more than four profiles, manual adjustment of the new trench profile is allowed. Cable laying cross-section. And providing a maintenance cable laying section diagram, wherein the cable laying section diagram supports graphic operation and graphic editing, and supports adding buried pipes and establishing cable buried pipe association.
Optical cable network management for managing optical cable lines, optical cable segments, fiber cores, and splicing equipment resources, including.
And managing the optical cable and the fiber core. Management of the cable is accomplished through the lines and cable sections. An optical cable route is made up of one or more optical cable segments. Adding of optical cable sections: is automatically generated during the process of laying the optical cable. Deleting the optical cable segment: after the optical cable section is appointed, the deletion of all attribute information of the optical cable section is completed, and occupied pipeline network resources and terminal occupation of connected splicing equipment and an optical fiber distribution frame are released simultaneously. Fiber core resource management: establishing fiber core data according to an optical cable template in the modeling process of the optical cable section, and supporting fiber core technical parameters to be distributed; and displaying the use of the fiber core according to the service access after the optical service is opened. A start point and an end point are designated, and optical fiber connection information of optical paths constituting the start point and the end point are given. And double naming of fiber core positioning and optical cable lines according to specified distances is supported.
And continuing equipment management. And the addition, the movement and the deletion on the continuous equipment graph are supported. And supporting the internal continuation diagram of the continuation equipment, wherein the internal continuation diagram can be imported from a template or drawn manually. Supporting the welding of the fiber core and supporting the automatic display of the core color. Supporting the editing and query of basic data of the continuous equipment. When splicing equipment is added, the optical cable section can be automatically cut. Trunk splice deletion can automatically merge cable segments. Joint topology analysis and topology verification are supported.
Topology management and automatic mapping. In the optical cable network, the start/stop points, the central office station and the splicing equipment of the optical cable section are used as nodes in the topology, and the optical cable section is used as a line in the logic topology. And generating a topological routing graph of the optical cable network according to the association relationship of the nodes and the lines. And forming a logic topological diagram of each system according to the service carried by the fiber core of the optical cable, and supporting a user in the system diagram to adjust the position in the line equipment diagram to enable the line equipment diagram to be horizontal and vertical, wherein the adjustment of the equipment position does not influence the actual geographical position of the equipment in the geographical diagram. The user in the system diagram is supported to edit the line equipment data, and the data is automatically synchronized with the geographic diagram. And the functions of inquiring, positioning and counting the optical cable network resources in the system diagram are supported.
Checking, positioning and statistical management, checking and inquiring of cable resources is used for inquiring, positioning and counting the occupation and use conditions of cable segment data and optical cable core network resources, checking and inquiring of optical cable routes according to circuits, displaying the cable segments and the connection devices passing through the routes, and clicking devices in the routes to display device attribute data. Various modes of checking and counting of geographic maps are supported. Including statistical management of cable lines, cable segments, wire pairs, and distribution boxes.
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 accident processing module, the line modeling module and the pipeline management 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 a program code stored in a physical processor execution memory.
The power grid accident modeling management system provided by the invention realizes simulation analysis of the power distribution network, can provide a realistic simulation environment for operators, realizes functions of running simulation, dispatcher simulation training and the like, does not influence normal monitoring of the system through simulation operation, and is convenient for management of line equipment.
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 as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (9)
1. Grid accident modeling management system, characterized by, includes: the system comprises an accident handling module, a line modeling module and a pipeline management module; wherein, the first and the second end of the pipe are connected with each other,
the accident handling module is used for:
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;
the line modeling module performs modeling operation on overhead lines and cable lines outside the transformer substation and the switching station;
the line modeling module is configured to:
providing a tool to complete equipment addition, deletion and movement operations;
editing equipment;
modeling a wiring diagram inside a station;
the pipeline management module is configured to:
editing and managing an underground pipe network;
managing an optical cable network;
managing the continuous equipment;
topology management and automatic mapping;
checking, positioning and statistical management.
2. The system of claim 1, wherein for accident handling, if the fault still exists after reclosing, the relay protection device acts again to trip the switch it controls; 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.
3. The system of claim 2, wherein the start condition is confirmed as a substation outgoing line breaker or line switch tripping for protection action; 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.
4. The system according to claim 2, wherein after the fault information collection phase is finished, the power distribution network control station performs fault location to determine the minimum fault location area and the minimum fault automatic location area on the basis of grasping the global information, and after the fault location phase is finished, the power distribution network control station obtains the minimum fault isolation area and the minimum fault automatic isolation area according to a fault automatic location result and a current network topology of the power distribution network.
5. The system of claim 1, wherein the device editor supports all types of modeling of distribution network devices and editing of parameter attributes, including: newly building, moving and deleting various devices in a power distribution network; editing and checking various device attribute parameters and image data; editing the actual contour of the transformer substation; editing positions of outlet ports of various stations; manually setting the marking positions of various devices automatically arranged by the system; adding and deleting transformers, generators and high-voltage motors in the power distribution station and setting parameter attributes; and providing an equipment template editing tool for a user to combine elements as tools into an equipment template of common equipment, wherein the equipment template comprises a breaker cabinet, a load switch cabinet, a grounding cabinet and the like of common models.
6. The system of claim 1, wherein the station internal wiring diagram modeling supports editing and saving of the substation, distribution station, box-type substation, switching station, ring main unit and cable branch box distribution station internal electrical primary wiring diagram, and provides a power distribution equipment graphic symbol library based on meeting grid standard requirements, including distribution transformers, load switches, circuit breakers, disconnectors, buses, current transformers and capacitors, for editing the primary wiring diagram; the various devices are provided in the form of device primitives in the internal wiring diagram editing; and automatically establishing topological connection relations among various electrical devices in the combined equipment by using an internal wiring diagram established by the equipment elements.
7. The system of claim 1, wherein the modeling and maintenance of a utility such as a cable firewall comprises:
modeling facilities; carrying out graphical modeling on underground pipe network facilities by using a modeling tool, and automatically maintaining topological relations, incidence relations and dependency relations according to the power grid model rules; maintaining the attribute; the maintenance of public attribute parameters of the underground pipe network facilities is realized through an attribute maintenance function, and uploading, association and deletion of accessories related to the attributes of the underground pipe network facilities are provided; performing statistical examination and inquiry; equipment cards and account checking and counting of various facilities are supported; a wireline well deployment view; providing a maintenance function for a development drawing of the cable well, wherein the development drawing is provided with a plurality of sections of pipe ditches; pipe hole, reserved cable line, cable line connector indication, north arrow and indication road information; the expanded view of the cable well and the pipe hole number in the section can be displayed.
8. The system of claim 1, wherein the topology management and automation graph; in the optical cable network, the start/stop point, the central office station and the connection equipment of the optical cable section are used as nodes in the topology, and the optical cable section is used as a line in the logic topology; generating a topological routing graph of the optical cable network according to the association relationship of the nodes and the lines; forming a logic topological graph of each system according to services carried by a fiber core of the optical cable, supporting a user in the system graph to adjust the position in the line equipment graph to be horizontal and vertical, wherein the adjustment of the position of the equipment does not influence the actual geographical position of the equipment in the geographical graph; the user in the system diagram is supported to edit the line equipment data, and the data is automatically synchronized with the geographic diagram; and the functions of inquiring, positioning and counting the optical cable network resources in the system diagram are supported.
9. The system according to claim 1, wherein the examination, positioning and statistical management is used for examining and inquiring cable resources to inquire, position and count cable segment data, occupancy of optical cable core network resources and use conditions, and supports that optical cable routes are examined according to circuits, cable segments and connection devices passing through the routes are displayed, and device attribute data can be displayed by clicking devices in the routes; checking and inquiring and counting in multiple modes of geographic maps are supported; including statistical management of cable lines, cable segments, wire pairs, and distribution boxes.
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| CN103617760B (en) * | 2013-09-29 | 2016-01-20 | 江苏省电力公司 | A kind of power distribution network DTS analogue system and emulation mode thereof |
| CN104077454A (en) * | 2014-07-08 | 2014-10-01 | 国网辽宁省电力有限公司 | Three-dimensional plant station simulation system and method based on power grid accident |
| JP2018057130A (en) * | 2016-09-28 | 2018-04-05 | 株式会社ダイヘン | Accident training assist device |
| CN107025344B (en) * | 2017-04-01 | 2020-12-18 | 内蒙古电力(集团)有限责任公司培训中心 | Power distribution automation simulation system and simulation method for power distribution DTS |
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