CN113904312A - Intelligent station 220kV bus differential protection networking optical fiber broken link defect eliminating method and device - Google Patents
Intelligent station 220kV bus differential protection networking optical fiber broken link defect eliminating method and device Download PDFInfo
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- CN113904312A CN113904312A CN202111217273.8A CN202111217273A CN113904312A CN 113904312 A CN113904312 A CN 113904312A CN 202111217273 A CN202111217273 A CN 202111217273A CN 113904312 A CN113904312 A CN 113904312A
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- 230000004224 protection Effects 0.000 title claims abstract description 323
- 230000006855 networking Effects 0.000 title claims abstract description 191
- 239000013307 optical fiber Substances 0.000 title claims abstract description 113
- 230000007547 defect Effects 0.000 title claims abstract description 110
- 238000000034 method Methods 0.000 title claims abstract description 58
- 230000002159 abnormal effect Effects 0.000 claims abstract description 49
- 230000008030 elimination Effects 0.000 claims abstract description 49
- 238000003379 elimination reaction Methods 0.000 claims abstract description 49
- 238000004891 communication Methods 0.000 claims abstract description 43
- 241000272814 Anser sp. Species 0.000 claims abstract description 30
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- 238000004080 punching Methods 0.000 claims description 4
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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
- 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
- H02J13/00016—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 using a wired telecommunication network or a data transmission bus
- H02J13/00017—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 using a wired telecommunication network or a data transmission bus using optical fiber
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The embodiment of the invention discloses a method and a device for link breaking and defect elimination of an optical fiber of a 220kV bus differential protection networking of an intelligent station. The method comprises the following steps: acquiring a background chain breakage warning soft message of the intelligent station; confirming that the 220kV bus differential protection networking receives all the GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking; disconnecting the 220kV bus differential protection networking side optical fiber, and judging whether a communication plug-in of the 220kV bus differential protection networking is abnormal or not through an accessed tester; after the result that whether the communication plug-in is abnormal is confirmed, determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message; and determining a defect point of the 220kV bus differential protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point. The method and the device have the advantages that the defect processing of the rapid and safe effect is realized, and the operation safety, stability and power supply reliability of the power grid are improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of intelligent substations, in particular to a method and a device for link breaking and defect elimination of 220kV bus differential protection networking optical fibers of an intelligent substation.
Background
The existing power grid newly-thrown transformer stations are intelligent stations, and the work of emergency repair and defect treatment of the intelligent stations is gradually increased by one-line operation and inspection personnel of the power system.
The 220kV intelligent station is usually a regional ground grid hub substation, and 220kV bus differential protection is used as main protection of a 220kV bus and is very important for safe and stable power supply of users in a district. The main defect type of the intelligent device of the intelligent station is optical fiber broken chain, once an electric power operation and inspection worker incorrectly processes the defect, particularly the optical fiber broken chain defect of the 220kV bus protection networking is incorrectly processed, serious consequences such as defect range expansion, power failure range expansion, incorrect outage of the protection device, reduction of power supply reliability and the like are probably caused.
How to provide a method for eliminating optical fiber chain breakage and defects of a 220kV bus differential protection networking of an intelligent station becomes an urgent need for power operation and inspection personnel to carry out defect processing work, and is an important ring for ensuring the power supply safety of regional power grids.
Disclosure of Invention
The embodiment of the invention provides a method and a device for link breaking and defect elimination of an optical fiber of a 220kV bus differential protection networking of an intelligent station, so as to realize rapid and safe defect processing and improve the operation safety, stability and power supply reliability of a power grid.
In a first aspect, an embodiment of the present invention provides an intelligent station 220kV bus differential protection networking optical fiber break-link defect eliminating method, where the intelligent station 220kV bus differential protection networking optical fiber break-link defect eliminating method includes:
acquiring a background chain breakage warning soft message of the intelligent station, wherein the chain breakage warning soft message comprises chain breakage warning signals on the receiving side and the transmitting side of a 220kV bus differential protection networking;
confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking;
disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester;
after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message;
and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point.
Further, the chain breakage warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking comprise: the method comprises the steps that all 220kV line protection and all main transformer protection receive chain breakage warning signals of 220kV bus differential protection, and all 220kV line protection, all main transformer protection and bus coupling protection received chain breakage warning signals of 220kV bus differential protection.
Further, confirming that the 220kV bus differential protection networking receives all the GOOSE exceptions at intervals to exit the outlet soft pressing plate of the 220kV bus differential protection networking, includes:
and confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity, and all 220kV line protection and all main transformer protection receive the broken link alarm signal of the 220kV bus differential protection, withdrawing all 220kV bus differential protection outlet soft pressing plates and starting failure soft pressing plates, and withdrawing all main transformer protection outlet soft pressing plates and starting failure soft pressing plates.
Further, the disconnection of the 220kV bus differential protection networking side optical fiber and the judgment of whether the communication plug-in of the 220kV bus differential protection networking is abnormal through the accessed tester include:
and disconnecting the 220kV bus differential protection networking side optical fiber, determining whether the message can be normally received through an accessed tester, if so, judging that the communication plug-in of the 220kV bus differential protection networking is abnormal, and if not, checking a central switch.
Further, the intelligent station 220kV bus differential protection networking chain breakage and loss elimination method further includes:
after judging that the communication plug-in unit of the 220kV busbar differential protection networking is abnormal, punching the 220kV busbar differential protection overhaul pressing plate and restarting;
and judging whether the alarm of the protection device and the background of the intelligent station is recovered or not, and performing corresponding defect elimination according to the result of whether the alarm is recovered or not.
Further, determining the switch operating state of the central switch according to the optical fiber signal indicator light and the message includes:
judging whether the optical fiber signal indicator lamp is fully bright, if so, judging whether the message is normal by packet grabbing and checking, and if not, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
if the packet capturing and checking are normal, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
and if the packet capturing and checking message is abnormal, determining that the switch running state of the central switch is an abnormal state.
Further, the intelligent station 220kV bus differential protection networking chain breakage and loss elimination method further includes:
and after the central switch is judged to be damaged, the central switch is replaced to the 220kV bus differential protection optical fiber.
Further, before determining a defect point of a 220kV bus differential protection networking broken link of the intelligent station according to the running state of the switch, the method further includes:
restarting the central switch;
determining a defect point of a 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point, wherein the method comprises the following steps:
and after determining that the running state of the switch of the central switch is an abnormal state, judging whether the alarm of the protection device and the background of the intelligent station is recovered, if so, confirming that the defect point is correspondingly eliminated, and if not, replacing the central switch.
In a second aspect, an embodiment of the present invention further provides an intelligent station 220kV bus differential protection networking optical fiber disconnection and loss eliminating device, where the intelligent station 220kV bus differential protection networking optical fiber disconnection and loss eliminating device includes:
the system comprises a soft message acquisition module, a link breaking alarm module and a link breaking alarm module, wherein the soft message acquisition module is used for acquiring a background link breaking alarm soft message of an intelligent station, and the link breaking alarm soft message comprises link breaking alarm signals on the receiving side and the transmitting side of a 220kV bus differential protection networking;
the interval GOOSE confirming module is used for confirming that the 220kV busbar differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV busbar differential protection networking;
the communication plug-in inspection module is used for disconnecting the 220kV bus differential protection networking side optical fiber and judging whether the communication plug-in of the 220kV bus differential protection networking is abnormal or not through an accessed tester;
the switch checking module is used for checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking after confirming the result that whether the communication plug-in is abnormal or not, grabbing a packet to check a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message;
and the broken link defect eliminating module is used for determining a defect point of the broken link of the 220kV bus differential protection networking of the intelligent station according to the running state of the switch and performing corresponding defect elimination according to the defect point.
In a third aspect, an embodiment of the present invention further provides an intelligent station, where the intelligent station includes the device for link-breaking and defect-eliminating in 220kV bus differential protection networking provided in the embodiment of the second aspect of the present invention.
According to the technical scheme of the embodiment of the invention, a background broken link warning soft message of the intelligent station is obtained, wherein the broken link warning soft message comprises broken link warning signals at the receiving and transmitting sides of a 220kV bus differential protection networking; confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking; disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester; after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message; and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point. The problems that processing has potential safety hazards, low efficiency and the like due to the fact that standardized flow of a processing method of a 220kV bus differential protection networking optical fiber broken link defect of a 220kV intelligent station is lost are solved, so that rapid and safe defect processing is achieved, and the operation safety, stability and power supply reliability of a power grid are improved.
Drawings
Fig. 1 is a flowchart of an optical fiber link breaking and defect eliminating method for a 220kV bus differential protection networking of an intelligent station according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for link breaking and defect elimination of an optical fiber in a 220kV bus differential protection networking of an intelligent station according to a second embodiment of the present invention;
fig. 3 is a structural diagram of an optical fiber link breaking and loss eliminating device for a 220kV bus differential protection networking of an intelligent station according to a third embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention.
It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Example one
Fig. 1 is a flowchart of an intelligent station 220kV bus differential protection networking optical fiber break chain elimination method according to an embodiment of the present invention, which is applicable to providing a standardized design of such a defect processing "five-step method" when a 220kV bus differential protection networking optical fiber break chain defect occurs in an intelligent station, and instructing a transportation and inspection worker to complete a defect processing work using a fastest speed and safest path, where the intelligent station 220kV bus differential protection networking optical fiber break chain elimination method may be executed by an intelligent station 220kV bus differential protection networking optical fiber break chain elimination device, and the intelligent station 220kV bus differential protection networking optical fiber break chain elimination device may be implemented in a form of software and/or hardware. The method for eliminating the chain breakage and the defect of the 220kV bus differential protection networking optical fiber of the intelligent station specifically comprises the following steps:
s110, obtaining a background chain breakage warning soft message of the intelligent station, wherein the chain breakage warning soft message comprises chain breakage warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking.
The intelligent substation is an intelligent substation, adopts advanced, reliable, integrated and environment-friendly intelligent equipment, automatically completes basic functions of information acquisition, measurement, control, protection, metering, detection and the like according to basic requirements of total station information digitization, communication platform networking and information sharing standardization, and meanwhile, has a substation supporting high-level functions of power grid real-time automatic control, intelligent regulation, online analysis decision making, cooperative interaction and the like.
The 220kV bus protection function generally comprises bus differential protection (busbar differential protection), bus-tie related protection (bus-tie failure protection, bus-tie dead zone protection, bus-tie overcurrent protection, bus-tie charging protection and the like) and breaker failure protection. Important buses with voltage levels of 220kV and above are doubled, two sets of bus protection are configured, in the embodiment, an A set of 220kV bus differential protection and a B set of 220kV bus differential protection are set as main protection of the 220kV buses, and it can be understood that the method for eliminating the chain breakage of the 220kV bus differential protection networking of the intelligent station is simultaneously suitable for the chain breakage elimination of the A set of 220kV bus differential protection networking and the B set of 220kV bus differential protection networking.
Specifically, an electric power operation and inspection worker firstly checks a background chain breakage warning soft message, namely obtains the background chain breakage warning soft message of the intelligent station, wherein the chain breakage warning soft message comprises chain breakage warning signals on the receiving and sending sides of a 220kV bus differential protection networking, when an optical fiber of the 220kV bus differential protection networking is subjected to chain breakage, the optical fiber is subjected to chain breakage on the receiving and sending sides, namely all 220kV line protections, all main transformer protections receive a chain breakage warning of the 220kV bus differential protection A, and the 220kV bus differential protection receives all line protections, all main transformer protections and a bus coupling protection chain breakage warning.
On the basis, the chain breakage warning signals of the 220kV bus differential protection networking receiving and sending sides comprise: the method comprises the steps that all 220kV line protection and all main transformer protection receive chain breakage warning signals of 220kV bus differential protection, and all 220kV line protection, all main transformer protection and bus coupling protection received chain breakage warning signals of 220kV bus differential protection.
And S120, confirming that the 220kV bus differential protection networking receives all the GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking.
Wherein, goose refers to a substation event facing to a general object, and is a fast message transmission mechanism in IEC61850, and is used for transmitting important real-time signals between IEDs in a substation. The GOOSE adopts network signals to replace a hard-wired communication mode between conventional substation devices, and the secondary cable wiring of the substation is greatly simplified.
In this embodiment, it is confirmed that the 220kV busbar differential protection network receives all the interval GOOSE anomalies, and all the 220kV line protection and all the main transformer protection receive 220kV busbar differential protection broken link alarms.
Specifically, after confirming that the 220kV busbar differential protection networking receives all interval GOOSE anomalies, and all 220kV line protections and all main transformer protections receive the chain breakage warning signal of the 220kV busbar differential protection, the operation personnel requires the operation personnel to stop the 220kV busbar differential protection, that is, to withdraw from all outlet soft pressing plates of the 220kV busbar differential protection, the operation personnel requires the operation personnel to stop all 220kV line protections, that is, to withdraw from all outlet soft pressing plates and start-up failure soft pressing plates of the 220kV line protections, and the operation personnel requires the operation personnel to stop all main transformer protections, that is, to withdraw from all outlet soft pressing plates and start-up failure soft pressing plates of the all main transformer protections.
S130, disconnecting the 220kV bus differential protection networking side optical fiber, and judging whether the communication plug-in of the 220kV bus differential protection networking is abnormal or not through an accessed tester.
In order to determine whether a defect point of a broken link of a 220kV bus differential protection networking optical fiber of an intelligent station is a 220kV bus differential protection networking side optical fiber or a communication plug-in unit of a 220kV bus differential protection networking, the 220kV bus differential protection networking side optical fiber is pulled out and inserted into a handheld tester, namely the 220kV bus differential protection networking side optical fiber is disconnected and connected into the tester, the tester can be a handheld tester, and the embodiment does not make any limitation on the type of the specific tester.
On the basis of the embodiment, the 220kV bus differential protection networking side optical fiber is disconnected, whether the message can be normally received or not is determined through an accessed GOOSE message module in the tester, if yes, the communication plug-in unit of the 220kV bus differential protection networking is judged to be abnormal, and if not, the central switch is checked.
Specifically, the optical fiber on the 220kV bus differential protection networking side is pulled out and inserted into the handheld tester, whether the message is normal or not is checked through a GOOSE message module in the tester, if the message is normal, the communication plug-in of the 220kV bus differential protection networking is judged to be abnormal, and if the message cannot be received, the next-stage central switch is checked.
Further, the intelligent station 220kV bus differential protection networking chain breakage and loss elimination method further includes: after judging that the communication plug-in unit of the 220kV busbar differential protection networking is abnormal, punching the 220kV busbar differential protection overhaul pressing plate and restarting; and judging whether the alarm of the protection device and the background of the intelligent station is recovered or not, and performing corresponding defect elimination according to the result of whether the alarm is recovered or not.
S140, after the result that whether the communication plug-in unit is abnormal is confirmed, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message.
On the basis of the above embodiment, determining the switch operating state of the central switch according to the optical fiber signal indicator light and the message includes: judging whether the optical fiber signal indicator lamp is fully bright, if so, judging whether the message is normal by packet grabbing and checking, and if not, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged; further, if the packet is normally checked, it is determined that the bus differential protection optical fiber from the central switch to 220kV is damaged; and if the packet capturing and checking message is abnormal, determining that the switch running state of the central switch is an abnormal state.
Specifically, to central switch screen, whether the fiber signal pilot lamp of central switch to 220kV bus differential protection A is bright entirely, if central switch to 220kV bus differential protection A's fiber signal pilot lamp is not bright or does not flash, then inspect central switch to 220kV bus differential protection optic fibre, judge central switch promptly to 220kV bus differential protection optic fibre damages.
Further, on the basis of the above embodiment, after it is determined that the bus differential protection optical fiber from the central switch to 220kV is damaged, the bus differential protection optical fiber from the central switch to 220kV is replaced.
If central switch goes out or bright not scintillation to 220kV bus differential protection A's optical fiber signal pilot lamp, then uses the hand-held type tester to pass through reserve optic fibre and inserts central switch mouth, judges to grab the package and look over whether the message is normal, if the message is normal, then judge central switch extremely 220kV bus differential protection optic fibre damages, then change central switch extremely 220kV bus differential protection optic fibre, if grab the package and look over the message is abnormal, no message promptly, then judge that the switch running state of central switch is abnormal state, and central switch hardware module damages promptly.
S150, determining a defect point of the 220kV bus differential protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point.
The defect point of the broken link of the 220kV bus differential protection networking of the intelligent station can correspond to a 220kV bus differential protection networking side optical fiber, a communication plug-in unit of the 220kV bus differential protection networking or a central switch hardware module.
On the basis of the foregoing embodiment, after determining that the switch operating state of the central switch is an abnormal state, before determining a defect point of a 220kV bus differential protection networking broken link of the intelligent station according to the switch operating state, the method further includes: restarting the central switch; further, according to the switch running state, determining a defect point of a 220kV bus differential protection networking broken link of the intelligent station, and according to the defect point, performing corresponding defect elimination, including: and after determining that the running state of the switch of the central switch is an abnormal state, judging whether the alarm of the protection device and the background of the intelligent station is recovered, if so, confirming that the defect point is correspondingly eliminated, and if not, replacing the central switch.
According to the technical scheme of the embodiment of the invention, a background broken link warning soft message of the intelligent station is obtained, wherein the broken link warning soft message comprises broken link warning signals at the receiving and transmitting sides of a 220kV bus differential protection networking; confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking; disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester; after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message; and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point. The problems that processing has potential safety hazards, low efficiency and the like due to the fact that standardized flow of a processing method of a 220kV bus differential protection networking optical fiber broken link defect of a 220kV intelligent station is lost are solved, so that rapid and safe defect processing is achieved, and the operation safety, stability and power supply reliability of a power grid are improved.
Example two
Fig. 2 is a flowchart of a method for link breaking and defect elimination of an optical fiber in a 220kV bus differential protection networking of an intelligent station according to a second embodiment of the present invention, which is optimized based on the above-described embodiment.
Correspondingly, the method of the embodiment specifically includes:
s210, obtaining a background chain breakage warning soft message of the intelligent station, wherein the chain breakage warning soft message comprises chain breakage warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking.
The chain breakage warning signals of the 220kV bus differential protection networking receiving and transmitting sides comprise: the method comprises the steps that all 220kV line protection and all main transformer protection receive chain breakage warning signals of 220kV bus differential protection, and all 220kV line protection, all main transformer protection and bus coupling protection received chain breakage warning signals of 220kV bus differential protection.
S211, confirming that the 220kV bus differential protection networking receives all the GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking.
Specifically, after confirming that the 220kV busbar differential protection networking receives all interval GOOSE anomalies, and all 220kV line protections and all main transformer protections receive the chain breakage warning signal of the 220kV busbar differential protection, the operation personnel requires the operation personnel to stop the 220kV busbar differential protection, that is, to withdraw from all outlet soft pressing plates of the 220kV busbar differential protection, the operation personnel requires the operation personnel to stop all 220kV line protections, that is, to withdraw from all outlet soft pressing plates and start-up failure soft pressing plates of the 220kV line protections, and the operation personnel requires the operation personnel to stop all main transformer protections, that is, to withdraw from all outlet soft pressing plates and start-up failure soft pressing plates of the all main transformer protections.
And S212, disconnecting the 220kV bus differential protection networking side optical fiber and connecting the optical fiber to the tester.
S213, determining whether the message can be normally received through the accessed GOOSE message module in the tester, if so, executing the step S214, and if not, executing the step S216.
S214, judging that the communication plug-in unit of the 220kV bus differential protection networking is abnormal, and executing the step S215.
S215, turning on the 220kV bus differential protection overhaul pressure plate, restarting, and executing the step S222.
S216, checking the central switch.
S217, checking whether an optical fiber signal indicator lamp from the central switch to the 220kV bus differential protection networking is fully on, if so, executing a step S219, and if not, executing a step S218.
S218, judging that the bus differential protection optical fiber from the central switch to the 220kV bus differential protection optical fiber is damaged.
And S219, judging whether a packet capturing check message generated by accessing the central switch through the tester is normal or not, if so, executing the step S218, and if not, executing the step S220.
And S220, if the hardware module of the central switch is damaged, executing the step S221.
And S221, restarting the central switch once.
And S222, judging whether the alarm of the protection device and the intelligent station background is recovered or not, if so, executing a step S223, and if not, executing a step S224.
And S223, confirming that the defect points are correspondingly eliminated, namely the elimination is successful.
And S224, contacting the manufacturer to replace the central switch.
The invention innovatively develops a 220kV bus differential protection networking optical fiber broken link defect elimination method, which has the main functions of positioning defect points based on methods such as alarm signals, switch inspection, digital photovoltaic bale grabbing and the like, providing defect processing strategies according to different defect parts, designing a standardized flow of the 220kV bus differential protection networking optical fiber broken link defects, guiding operation and inspection personnel to complete the processing work of the defects in the fastest and safest way, and having great economic and engineering application values. The problems that processing has potential safety hazards, low efficiency and the like due to the fact that standardized flow of a processing method for the 220kV busbar differential protection networking optical fiber broken chain defect of a 220kV intelligent station is lost are solved, and the safety, stability and power supply reliability of power grid operation are remarkably improved.
EXAMPLE III
Fig. 3 is a structural diagram of an intelligent station 220kV bus differential protection networking optical fiber broken link defect eliminating device provided in the third embodiment of the present invention, and this embodiment can be applied to a situation where when a 220kV bus differential protection networking optical fiber broken link defect occurs in an intelligent station, a standardized design such as a defect handling "five-step method" is provided to guide a human operator to complete a defect handling work using the fastest and safest path.
As shown in fig. 3, the device for link breaking and loss elimination of the optical fiber in the 220kV bus differential protection networking of the intelligent station comprises: a soft packet obtaining module 310, an interval GOOSE confirming module 320, a communication plug-in checking module 330, a switch checking module 340, and a broken link eliminating module 350, wherein:
the soft message acquisition module 310 is configured to acquire a background chain scission warning soft message of the intelligent station, where the chain scission warning soft message includes chain scission warning signals on both sides of a 220kV bus differential protection networking transceiver;
the interval GOOSE confirming module 320 is configured to confirm that the 220kV bus differential protection networking receives all the interval GOOSE exceptions, so as to exit the outlet soft pressing plate of the 220kV bus differential protection networking;
the communication plug-in inspection module 330 is configured to disconnect the optical fiber on the 220kV bus differential protection networking side, and determine whether the communication plug-in of the 220kV bus differential protection networking is abnormal through an accessed tester;
the switch checking module 340 is configured to check an optical fiber signal indicator lamp of a central switch to the 220kV bus differential protection networking after determining a result of whether the communication plug-in is abnormal, grab a packet to check a message generated by accessing the central switch through the tester, and determine a switch operating state of the central switch according to the optical fiber signal indicator lamp and the message;
and the chain breakage and defect elimination module 350 is used for determining a defect point of the 220kV bus bar protection networking chain breakage of the intelligent station according to the running state of the switch and carrying out corresponding defect elimination according to the defect point.
According to the optical fiber broken link defect eliminating device for the 220kV bus differential protection networking of the embodiment, a background broken link warning soft message of the intelligent station is obtained, wherein the broken link warning soft message comprises broken link warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking; confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking; disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester; after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message; and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point. The problems that processing has potential safety hazards, low efficiency and the like due to the fact that standardized flow of a processing method of a 220kV bus differential protection networking optical fiber broken link defect of a 220kV intelligent station is lost are solved, so that rapid and safe defect processing is achieved, and the operation safety, stability and power supply reliability of a power grid are improved.
On the basis of the above embodiments, the chain breakage warning signals at the receiving and sending sides of the 220kV bus differential protection networking include: the method comprises the steps that all 220kV line protection and all main transformer protection receive chain breakage warning signals of 220kV bus differential protection, and all 220kV line protection, all main transformer protection and bus coupling protection received chain breakage warning signals of 220kV bus differential protection.
Based on the foregoing embodiments, the GOOSE interval confirmation module 320 is specifically configured to:
and confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity, and all 220kV line protection and all main transformer protection receive the broken link alarm signal of the 220kV bus differential protection, withdrawing all 220kV bus differential protection outlet soft pressing plates and starting failure soft pressing plates, and withdrawing all main transformer protection outlet soft pressing plates and starting failure soft pressing plates.
On the basis of the above embodiments, the communication plug-in checking module 330 is specifically configured to:
and disconnecting the 220kV bus differential protection networking side optical fiber, determining whether the message can be normally received through an accessed tester, if so, judging that the communication plug-in of the 220kV bus differential protection networking is abnormal, and if not, checking a central switch.
On the basis of the above embodiments, the device for link breaking and defect elimination of the 220kV bus differential protection networking of the intelligent station further comprises:
after judging that the communication plug-in unit of the 220kV busbar differential protection networking is abnormal, punching the 220kV busbar differential protection overhaul pressing plate and restarting;
and judging whether the alarm of the protection device and the background of the intelligent station is recovered or not, and performing corresponding defect elimination according to the result of whether the alarm is recovered or not.
On the basis of the above embodiments, determining the switch operating state of the central switch according to the optical fiber signal indicator light and the message includes:
judging whether the optical fiber signal indicator lamp is fully bright, if so, judging whether the message is normal by packet grabbing and checking, and if not, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
if the packet capturing and checking are normal, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
and if the packet capturing and checking message is abnormal, determining that the switch running state of the central switch is an abnormal state.
On the basis of the above embodiments, the device for link breaking and defect elimination of the 220kV bus differential protection networking of the intelligent station further comprises:
and after the central switch is judged to be damaged, the central switch is replaced to the 220kV bus differential protection optical fiber.
On the basis of the foregoing embodiments, before determining a defect point of a 220kV busbar differential protection networking broken link of an intelligent station according to the operation state of the switch, the method further includes:
restarting the central switch;
determining a defect point of a 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point, wherein the method comprises the following steps:
and after determining that the running state of the switch of the central switch is an abnormal state, judging whether the alarm of the protection device and the background of the intelligent station is recovered, if so, confirming that the defect point is correspondingly eliminated, and if not, replacing the central switch.
The device for eliminating the broken link of the optical fiber of the intelligent station 220kV bus differential protection networking provided by each embodiment can execute the method for eliminating the broken link of the optical fiber of the intelligent station 220kV bus differential protection networking provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method for eliminating the broken link of the optical fiber of the intelligent station 220kV bus differential protection networking.
Example four
The fourth embodiment of the invention also provides an intelligent station, which comprises the optical fiber link breaking and loss eliminating device for the 220kV bus differential protection networking of the intelligent station provided by the embodiment of the invention, can execute the optical fiber link breaking and loss eliminating method for the 220kV bus differential protection networking of the intelligent station provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects for executing the optical fiber link breaking and loss eliminating method for the 220kV bus differential protection networking of the intelligent station.
According to the optical fiber broken link defect eliminating device for the 220kV bus differential protection networking of the embodiment, a background broken link warning soft message of the intelligent station is obtained, wherein the broken link warning soft message comprises broken link warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking; confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking; disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester; after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message; and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point. The problems that processing has potential safety hazards, low efficiency and the like due to the fact that standardized flow of a processing method of a 220kV bus differential protection networking optical fiber broken link defect of a 220kV intelligent station is lost are solved, so that rapid and safe defect processing is achieved, and the operation safety, stability and power supply reliability of a power grid are improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A chain breakage and defect elimination method for a 220kV bus differential protection networking of an intelligent station is characterized by comprising the following steps:
acquiring a background chain breakage warning soft message of the intelligent station, wherein the chain breakage warning soft message comprises chain breakage warning signals on the receiving side and the transmitting side of a 220kV bus differential protection networking;
confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV bus differential protection networking;
disconnecting the optical fiber at the 220kV bus differential protection networking side, and judging whether a communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester;
after confirming whether the communication plug-in is abnormal or not, checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking, grabbing a packet, checking a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message;
and determining a defect point of the 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point.
2. The intelligent station 220kV bus differential protection networking chain breakage elimination method according to claim 1, wherein the chain breakage warning signals on the receiving side and the transmitting side of the 220kV bus differential protection networking comprise: the method comprises the steps that all 220kV line protection and all main transformer protection receive chain breakage warning signals of 220kV bus differential protection, and all 220kV line protection, all main transformer protection and bus coupling protection received chain breakage warning signals of 220kV bus differential protection.
3. The intelligent station 220kV bus differential protection networking chain breakage elimination method according to claim 2, wherein confirming that the 220kV bus differential protection networking receives all interval GOOSE anomalies to exit the 220kV bus differential protection networking outlet soft pressing plate comprises:
and confirming that the 220kV bus differential protection networking receives all interval GOOSE abnormity, and all 220kV line protection and all main transformer protection receive the broken link alarm signal of the 220kV bus differential protection, withdrawing all 220kV bus differential protection outlet soft pressing plates and starting failure soft pressing plates, and withdrawing all main transformer protection outlet soft pressing plates and starting failure soft pressing plates.
4. The intelligent station 220kV bus differential protection networking chain breakage and loss elimination method according to claim 1, wherein the step of disconnecting the 220kV bus differential protection networking side optical fiber and judging whether the communication plug-in unit of the 220kV bus differential protection networking is abnormal or not through an accessed tester comprises the steps of:
and disconnecting the 220kV bus differential protection networking side optical fiber, determining whether the message can be normally received through an accessed tester, if so, judging that the communication plug-in of the 220kV bus differential protection networking is abnormal, and if not, checking a central switch.
5. The intelligent station 220kV busbar differential protection networking chain breakage elimination method according to claim 4, wherein the intelligent station 220kV busbar differential protection networking chain breakage elimination method further comprises:
after judging that the communication plug-in unit of the 220kV busbar differential protection networking is abnormal, punching the 220kV busbar differential protection overhaul pressing plate and restarting;
and judging whether the alarm of the protection device and the background of the intelligent station is recovered or not, and performing corresponding defect elimination according to the result of whether the alarm is recovered or not.
6. The intelligent station 220kV bus differential protection networking chain breakage and loss elimination method according to claim 1, wherein determining the switch operating state of the central switch according to the optical fiber signal indicator light and the message comprises:
judging whether the optical fiber signal indicator lamp is fully bright, if so, judging whether the message is normal by packet grabbing and checking, and if not, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
if the packet capturing and checking are normal, judging that the bus differential protection optical fiber from the central switch to 220kV is damaged;
and if the packet capturing and checking message is abnormal, determining that the switch running state of the central switch is an abnormal state.
7. The intelligent station 220kV busbar differential protection networking chain breakage elimination method according to claim 6, wherein the intelligent station 220kV busbar differential protection networking chain breakage elimination method further comprises:
and after the central switch is judged to be damaged, the central switch is replaced to the 220kV bus differential protection optical fiber.
8. The intelligent station 220kV bus differential protection networking chain breakage elimination method according to claim 6, before determining a defect point of intelligent station 220kV bus differential protection networking chain breakage according to the switch operating state, further comprising:
restarting the central switch;
determining a defect point of a 220kV bus bar protection networking broken link of the intelligent station according to the running state of the switch, and performing corresponding defect elimination according to the defect point, wherein the method comprises the following steps:
and after determining that the running state of the switch of the central switch is an abnormal state, judging whether the alarm of the protection device and the background of the intelligent station is recovered, if so, confirming that the defect point is correspondingly eliminated, and if not, replacing the central switch.
9. The utility model provides an intelligent station 220kV bus differential protection network deployment chain rupture lacks device that disappears which characterized in that includes:
the system comprises a soft message acquisition module, a link breaking alarm module and a link breaking alarm module, wherein the soft message acquisition module is used for acquiring a background link breaking alarm soft message of an intelligent station, and the link breaking alarm soft message comprises link breaking alarm signals on the receiving side and the transmitting side of a 220kV bus differential protection networking;
the interval GOOSE confirming module is used for confirming that the 220kV busbar differential protection networking receives all interval GOOSE abnormity so as to quit the outlet soft pressing plate of the 220kV busbar differential protection networking;
the communication plug-in inspection module is used for disconnecting the 220kV bus differential protection networking side optical fiber and judging whether the communication plug-in of the 220kV bus differential protection networking is abnormal or not through an accessed tester;
the switch checking module is used for checking an optical fiber signal indicator lamp from a central switch to the 220kV bus differential protection networking after confirming the result that whether the communication plug-in is abnormal or not, grabbing a packet to check a message generated by accessing the central switch through the tester, and determining the switch running state of the central switch according to the optical fiber signal indicator lamp and the message;
and the broken link defect eliminating module is used for determining a defect point of the broken link of the 220kV bus differential protection networking of the intelligent station according to the running state of the switch and performing corresponding defect elimination according to the defect point.
10. An intelligent station, characterized in that the intelligent station comprises the 220kV bus differential protection networking break-link elimination device of claim 9.
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