CN101458505A - Full-station anti-mistaking closedown design method based on IEC61850 standard - Google Patents
Full-station anti-mistaking closedown design method based on IEC61850 standard Download PDFInfo
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- CN101458505A CN101458505A CNA2008102434264A CN200810243426A CN101458505A CN 101458505 A CN101458505 A CN 101458505A CN A2008102434264 A CNA2008102434264 A CN A2008102434264A CN 200810243426 A CN200810243426 A CN 200810243426A CN 101458505 A CN101458505 A CN 101458505A
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Abstract
The invention relates to an all-station system anti-misoperation lockout design method based on IEC61850 standard which processes uniform collocation management to all-station anti-misoperation lockout logic rule by method of combining with integrated anti-misoperation lockout in station control layer and dispersed anti-misoperation lockout in distance layer. A remote control interlocking is used between a background monitor system in station control layer and a remote communication server, IEC61850 standard is used for communication between the station control layer and distance layer to realize data interlocking; GOOSE serve provided by IEC61850 standard among anti-misoperation lockout devices in distance layer to realize data sharing among distances and complete anti-misoperation function in distances. The method makes up for a lack of traditional anti-misoperation, provides an uniform anti-misoperation logic collocation management, ensures consistency of the anti-misoperation logic rule, provides convenient operation maintaining management method; uses two-stage anti-misoperation lock to realize anti-misredundancy and complement each other, increases safe reliability of system operation.
Description
Technical field
The present invention relates to a kind of anti-misoperation locking method for designing of electric system, relate in particular to a kind of digital transformer substation automated system anti-misoperation locking method for designing based on the IEC61850 standard.Belong to the power automation technical field.
Background technology
Measure in the control procedure in the automation of transformation substations, in order to prevent the generation of maloperation, require the interior system in station to possess anti mis-closedown function, common anti-misoperation locking has mechanical latching, electric-magnetic lock, electric secondary anti-misoperation locking and computer anti-misoperation and lockout.Mechanical latching is the closedown mode that reaches reciprocal interlocking by the physical construction restriction of operation of equipment mechanism, and this locking can only realize in integrated disconnector or voltage switchgear, and is powerless for the locking between the equipment arranged apart; Electric-magnetic lock is to utilize auxiliary contacts such as switch, disconnector, facility network door, being switched on or switched off the electromagnetic lock power supplys such as disconnector that need locking can't rotate its operating mechanism and the device that reaches the equipment interlocking, the disconnector auxiliary contact since mechanical reason can not correct operation and electromagnetic lock because sealing is relatively poor, often water inlet is got rusty and can't be moved flexibly; Electric anti-misoperation is a kind of anti-error function that is based upon on the secondary operation loop, and general auxiliary contact by isolating switch and switch seals on its operation secondary circuit and reciprocal interlocking is realized.But secondary circuit wiring complexity, in addition, the secondary operation loop insulation breakdown of electrically operated disconnector and grounding switch also very easily causes the mistake of switch to draw and miss and close; Error proof locking system of microcomputer is realized anti-misoperation locking by special five anti-machine microcomputer software rule bases and on-the-spot lockset, but when computer system failure and unlocking, " five is anti-" function loses fully.Tradition anti-misoperation locking mode can not meet the demands, and as the error proof locking system of microcomputer of integrated automation of transformation stations application and development direction, there is not unified interface with interval equipment anti-misoperation locking, the error proof locking system of microcomputer logic rules can't be shared with interval equipment anti-misoperation locking logic, are still waiting further to improve and improve in function aspects.
The application of progressively implementing with the IEC61850 standard along with the digital transformer substation construction constantly is tending towards ripe, for the anti-misoperation locking of electric substation automation system provides new thinking and implementation method.
Summary of the invention
In order to solve the deficiencies in the prior art, the object of the invention is to provide a kind of full-station anti-mistaking closedown design method based on the IEC61850 standard, solve interior all the anti-misoperation locking logic rules in station and unify the configuration management problem, by station level and wall two-stage anti-misoperation locking, and it is anti-error in conjunction with the computer key lockset, prevent the generation of maloperation, improve the safe reliability of operation, the operation maintenance management means of providing convenience.
For achieving the above object, according to above-mentioned thought design, the present invention designs by following technical scheme:
A kind of full-station anti-mistaking closedown design method based on the IEC61850 standard is characterized in that adopting 5 sub-function module: anti-misoperation locking logic configuration administration module, background monitoring anti-misoperation locking module, telemechanical communication server anti-misoperation locking module, interval equipment anti-misoperation locking module, computer key anti-misoperation locking module; The mode that adopts station level to concentrate anti-misoperation locking and wall to disperse anti-misoperation locking to combine, design the two-stage anti-misoperation locking system of full station system, full station anti-misoperation locking logic rules are unified configuration management, adopt the remote control interlocking between the station level background monitoring system and the telemechanical communication server, station level and wall communicate by the IEC61850 standard, realize data interaction; Wall anti-misoperation locking equipment room is realized the compartment data sharing by the GOOSE service that the IEC61850 standard provides, and finishes interior at interval anti mis-closedown function; For on-the-spot on-electric and do not dispose the equipment of intelligent data collecting unit, adopt the computer key lockset anti-error, the collection of on-electric device signal is gathered by the computer key lockset, computer key sends background monitoring system by serial communication with signal again, and background monitoring system provides the information of computer key collection by the IEC61850 standard GOOSE service sends at interval that equipment participates in logical operation.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that described full station anti-misoperation locking logic rules unify the anti-misoperation locking logic that configuration management is meant full station and only need import once, automatically generate background monitoring, the telemechanical communication server and the anti-error logic rules of each interval equipment storehouse by background monitoring system, be directly downloaded to each equipment by network, realize the unified configuration management of the anti-mis-logical in full station.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that the concentrated anti-misoperation locking of described station level comprises background monitoring anti-misoperation locking and telemechanical communication server anti-misoperation locking, by the background monitoring or the telemechanical communication server all controlled objects of full station are controlled, background monitoring anti-misoperation locking module is differentiated carry out anti-error logic blocking by the control command of background monitoring system, logical condition satisfies then permission operation, otherwise quiescing; Telemechanical communication server anti-misoperation locking module is differentiated carrying out anti-error logic blocking from dispatching system by the control command of the telemechanical communication server, and logical condition satisfies the permission operation, otherwise quiescing.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that described wall disperses anti-misoperation locking to be meant that equipment anti-misoperation locking module is at interval finished separately anti-error logic discrimination is carried out in the control operation at interval, the GOOSE service that provides by the IEC61850 standard realizes the compartment data sharing.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that adopting between the described station level background monitoring system and the telemechanical communication server remote control interlocking to be meant between the telemechanical communication server and the background monitoring system and realize the straighforward operation interlocking by udp broadcast, background monitoring system is controlled locking by romote controlled locking broadcasting to the telemechanical communication server, and control operation finishes and by remote controlled unlocking broadcasting the telemechanical communication server controlled release; The telemechanical communication server is controlled locking by romote controlled locking broadcasting to background monitoring system, control operation finishes and by remote controlled unlocking broadcasting background monitoring system far away is controlled release, the background monitoring system or the telemechanical communication server are in after the remote control interlocking state time exceeds schedule time for a long time, and the background monitoring system or the telemechanical communication server can automatic unlockings.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that described 5 main sub-function module are to design according to following logical relation in system, realize the anti-misoperation locking of full station system: after the telemechanical communication server receives that dispatching terminal is sent out control command, telemechanical communication server anti-misoperation locking module is carried out logic discrimination (comprise with the remote control interlocking of background monitoring system and differentiating), conditions permit, then transmit guidance command to interval equipment, otherwise return locking control failure information; After background monitoring system was received control command, background monitoring anti-misoperation locking module was carried out logic discrimination (comprise with the remote control interlocking of the telemechanical communication server and differentiating), and conditions permit is then transmitted guidance command to interval equipment, otherwise returns locking control failure information; After receiving background monitoring system or telemechanical communication server control command at interval, equipment anti-misoperation locking module is carried out logic discrimination more at interval, and conditions permit then allows control operation, otherwise returns locking control failure information; During operation on-electric equipment, at first by computer key in-site collecting on-electric status information of equipment, the computer key lockset carries out data interaction by serial communication and background monitoring, background monitoring anti-misoperation locking module is to carrying out logic discrimination, logic allows, then background monitoring system sends the release coding to the computer key lockset, and computer key receives that the release coding carries out unlocking operation to the on-electric equipment of correspondence.
Aforesaid full-station anti-mistaking closedown design method based on the IEC61850 standard, it is characterized in that background monitoring system adopts the GOOSE service that provides by the IEC61850 standard to send data message by network, equipment receives back-end data information by the GOOSE mode at interval.
The invention has the beneficial effects as follows: the present invention remedies the deficiency of traditional anti-misoperation locking, reduces the secondary circuit circuit and connects, and simplifies construction; Unified anti-misoperation locking logic configuration management is provided, guarantees anti-misoperation locking logic rules consistance; The station level background monitoring and the telemechanical communication server, wall two-stage anti-misoperation locking are realized anti-error redundancy, complement each other, and solve anti-error blind spot, the safe reliability of raising system operation.
Description of drawings
Fig. 1 is a full-station anti-mistaking closedown function networking structure synoptic diagram;
Fig. 2 unifies the configuration management synoptic diagram for the full-station anti-mistaking closedown function;
Fig. 3 is a full-station anti-mistaking closedown functional module logical relation synoptic diagram.
Embodiment
Fig. 1 is a full-station anti-mistaking closedown function networking structure synoptic diagram of the present invention, Fig. 2 unifies the configuration management synoptic diagram for the full-station anti-mistaking closedown function, Fig. 3 is a full-station anti-mistaking closedown functional module logical relation synoptic diagram, below in conjunction with accompanying drawing the present invention is done concrete introduction.
Full-station anti-mistaking closedown design method based on the IEC61850 standard of the present invention, the mode that adopts station level to concentrate anti-misoperation locking and wall to disperse anti-misoperation locking to combine, design the two-stage anti-misoperation locking system of full station system, full station anti-misoperation locking logic rules are unified configuration management, adopt the remote control interlocking between the station level background monitoring system and the telemechanical communication server, station level and wall communicate by the IEC61850 standard, realize data interaction; Wall anti-misoperation locking equipment room is realized the compartment data sharing by the GOOSE service that the IEC61850 standard provides, and finishes interior at interval anti mis-closedown function; For on-the-spot on-electric and do not dispose the equipment of intelligent data collecting unit, adopt the computer key lockset anti-error, the collection of on-electric device signal is gathered by the computer key lockset, computer key sends background monitoring system by serial communication with signal again, and background monitoring system provides the information of computer key collection by the IEC61850 standard GOOSE service sends at interval that equipment participates in logical operation.
As shown in Figure 1, Fig. 1 is a full-station anti-mistaking closedown function networking structure synoptic diagram, anti mis-closedown function implementation method of the present invention comprises 5 main modular: anti-misoperation locking logic configuration administration module, background monitoring anti-misoperation locking module, telemechanical communication server anti-misoperation locking module, interval equipment anti-misoperation locking module, computer key anti-misoperation locking module.Wherein anti-misoperation locking logic configuration administration module is integrated in the background monitoring system and realizes, background monitoring anti-misoperation locking module is integrated in the background monitoring system and realizes, telemechanical communication server anti-misoperation locking module is integrated in the communication server equipment and realizes, equipment anti-misoperation locking module is integrated into equipment realization at interval at interval, and computer key anti-misoperation locking module realizes in the anti-lockset of computer spoon.Send the data to the background monitoring and the telemechanical communication server by network according to IEC61850 Standards Code form after the equipment acquired signal at interval in the network.Receive simultaneously from background monitoring and telemechanical communication server control command.The data communication of equipment room does not rely on the background monitoring and the telemechanical communication server at interval, and directly the GOOSE service that provides by the IEC61850 standard realizes the compartment data sharing.Computer key and background monitoring communicate by serial ports and separate padlock information alternately, by computer key on-electric equipment are carried out release then.
Fig. 2 unifies the configuration management synoptic diagram for the full-station anti-mistaking closedown function, the anti-misoperation locking logic at full station only need be imported once, generate anti-misoperation locking logic rules storehouse, full station by anti-misoperation locking logic configuration administration module, automatic simultaneously decomposition generates each logic rules storehouse at interval, sends to background monitoring anti-misoperation locking module, telemechanical communication server anti-misoperation locking module and anti-misoperation locking logic rules storehouse, the full station of equipment anti-misoperation locking module realization, interval by network and shares.
Station level concentrates anti-misoperation locking to comprise background monitoring anti-misoperation locking and telemechanical communication server anti-misoperation locking, by the background monitoring or the telemechanical communication server all controlled objects of full station are controlled, background monitoring anti-misoperation locking module is differentiated carry out anti-error logic blocking by the control command of background monitoring system, logical condition satisfies then permission operation, otherwise quiescing; Telemechanical communication server anti-misoperation locking module is differentiated carrying out anti-error logic blocking from dispatching system by the control command of the telemechanical communication server, and logical condition satisfies the permission operation, otherwise quiescing.Equipment anti-misoperation locking module is finished separately anti-error logic discrimination is carried out in interior at interval control operation at interval, and the GOOSE service that provides by the IEC61850 standard realizes the compartment data sharing.
Adopt the remote control interlocking between the station level background monitoring system and the telemechanical communication server, realize the straighforward operation interlocking by udp broadcast between the telemechanical communication server and the background monitoring system, background monitoring system is controlled locking by romote controlled locking broadcasting to the telemechanical communication server, and control operation finishes and by remote controlled unlocking broadcasting the telemechanical communication server controlled release; The telemechanical communication server is controlled locking by romote controlled locking broadcasting to background monitoring system, control operation finishes and by remote controlled unlocking broadcasting background monitoring system far away is controlled release, the background monitoring system or the telemechanical communication server are in after the remote control interlocking state time exceeds schedule time for a long time, and the background monitoring system or the telemechanical communication server can automatic unlockings.
Fig. 3 is a full-station anti-mistaking closedown functional module logical relation synoptic diagram, after the telemechanical communication server receives that dispatching terminal is sent out control command, telemechanical communication server anti-misoperation locking module is carried out logic discrimination (comprise with the remote control interlocking of background monitoring system and differentiating), conditions permit, then transmit guidance command to interval equipment, otherwise return locking control failure information; After background monitoring system was received control command, background monitoring anti-misoperation locking module was carried out logic discrimination (comprise with the remote control interlocking of the telemechanical communication server and differentiating), and conditions permit is then transmitted guidance command to interval equipment, otherwise returns locking control failure information; After receiving background monitoring system or telemechanical communication server control command at interval, equipment anti-misoperation locking module is carried out logic discrimination more at interval, and conditions permit then allows control operation, otherwise returns locking control failure information; During operation on-electric equipment, at first gather the on-electric status information of equipment by computer key, communicate by serial ports with background monitoring then, background monitoring equipment anti-misoperation locking module is carried out logic discrimination to the on-electric operation of equipment, logic allows, then background monitoring system sends the release coding by serial communication to the computer key lockset, and computer key anti-misoperation locking module receives that the release coding carries out unlocking operation to the on-electric equipment of correspondence.
Background monitoring system adopts the GOOSE service that provides by the IEC61850 standard to send data message by network in the present invention, and equipment receives back-end data information by the GOOSE mode at interval.
The foregoing description does not limit the present invention in any form, and all technical design methods that mode obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.
Claims (7)
1, based on the full-station anti-mistaking closedown design method of IEC61850 standard, it is characterized in that adopting 5 sub-function module: anti-misoperation locking logic configuration administration module, background monitoring anti-misoperation locking module, telemechanical communication server anti-misoperation locking module, interval equipment anti-misoperation locking module, computer key anti-misoperation locking module; The mode that adopts station level to concentrate anti-misoperation locking and wall to disperse anti-misoperation locking to combine, design the two-stage anti-misoperation locking system of full station system, full station anti-misoperation locking logic rules are unified configuration management, adopt the remote control interlocking between the station level background monitoring system and the telemechanical communication server, station level and wall communicate by the IEC61850 standard, realize data interaction; Wall anti-misoperation locking equipment room is realized the compartment data sharing by the GOOSE service that the IEC61850 standard provides, and finishes interior at interval anti mis-closedown function; For on-the-spot on-electric and do not dispose the equipment of intelligent data collecting unit, adopt the computer key lockset anti-error, the collection of on-electric device signal is gathered by the computer key lockset, computer key sends background monitoring system by serial communication with signal again, and background monitoring system provides the information of computer key collection by the IEC61850 standard GOOSE service sends at interval that equipment participates in logical operation.。
2, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that described full station anti-misoperation locking logic rules unify the anti-misoperation locking logic that configuration management is meant full station and only need import once, automatically generate background monitoring, the telemechanical communication server and the anti-error logic rules of each interval equipment storehouse by background monitoring system, be directly downloaded to each equipment by network, realize the unified configuration management of the anti-mis-logical in full station.
3, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that the concentrated anti-misoperation locking of described station level comprises background monitoring anti-misoperation locking and telemechanical communication server anti-misoperation locking, by the background monitoring or the telemechanical communication server all controlled objects of full station are controlled, background monitoring anti-misoperation locking module is differentiated carry out anti-error logic blocking by the control command of background monitoring system, logical condition satisfies then permission operation, otherwise quiescing; Telemechanical communication server anti-misoperation locking module is differentiated carrying out anti-error logic blocking from dispatching system by the control command of the telemechanical communication server, and logical condition satisfies the permission operation, otherwise quiescing.
4, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that described wall disperses anti-misoperation locking to be meant that equipment anti-misoperation locking module is at interval finished separately anti-error logic discrimination is carried out in the control operation at interval, the GOOSE service that provides by the IEC61850 standard realizes the compartment data sharing.
5, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that adopting between the described station level background monitoring system and the telemechanical communication server remote control interlocking to be meant between the telemechanical communication server and the background monitoring system and realize the straighforward operation interlocking by udp broadcast, background monitoring system is controlled locking by romote controlled locking broadcasting to the telemechanical communication server, and control operation finishes and by remote controlled unlocking broadcasting the telemechanical communication server controlled release; The telemechanical communication server is controlled locking by romote controlled locking broadcasting to background monitoring system, control operation finishes and by remote controlled unlocking broadcasting background monitoring system far away is controlled release, the background monitoring system or the telemechanical communication server are in after the remote control interlocking state time exceeds schedule time for a long time, and the background monitoring system or the telemechanical communication server can automatic unlockings.
6, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that described 5 main sub-function module are to design according to following logical relation in system, realize the anti-misoperation locking of full station system: after the telemechanical communication server receives that dispatching terminal is sent out control command, telemechanical communication server anti-misoperation locking module is carried out logic discrimination, conditions permit, then transmit guidance command to interval equipment, otherwise return locking control failure information; After background monitoring system was received control command, background monitoring anti-misoperation locking module was carried out logic discrimination, and conditions permit is then transmitted guidance command to interval equipment, otherwise returned locking control failure information; After receiving background monitoring system or telemechanical communication server control command at interval, equipment anti-misoperation locking module is carried out logic discrimination more at interval, and conditions permit then allows control operation, otherwise returns locking control failure information; During operation on-electric equipment, at first by computer key in-site collecting on-electric status information of equipment, the computer key lockset carries out data interaction by serial communication and background monitoring, background monitoring anti-misoperation locking module is to carrying out logic discrimination, logic allows, then background monitoring system sends the release coding to the computer key lockset, and computer key receives that the release coding carries out unlocking operation to the on-electric equipment of correspondence.
7, the full-station anti-mistaking closedown design method based on the IEC61850 standard according to claim 1, it is characterized in that background monitoring system adopts the GOOSE service that provides by the IEC61850 standard to send data message by network, equipment receives back-end data information by the GOOSE mode at interval.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101951028A (en) * | 2010-09-01 | 2011-01-19 | 江西省电力科学研究院 | Intelligent control scheme for transformer substation auxiliary equipment |
| CN102157983A (en) * | 2011-04-01 | 2011-08-17 | 南京南瑞继保电气有限公司 | GOOSE (generic object oriented substation event)-based five-prevention locking method of measuring and controlling device |
| CN101692585B (en) * | 2009-10-16 | 2011-08-31 | 国电南京自动化股份有限公司 | Anti-operation locking system of transformation substation automatic system |
| CN101609332B (en) * | 2009-07-22 | 2012-06-06 | 天津市电力公司 | Online three-layer synchronous anti-error locking system |
| CN102738892A (en) * | 2011-04-12 | 2012-10-17 | 河海大学 | Realization method of intelligent anti-error system of transformer substation based on IEC61850 |
| CN103475089A (en) * | 2013-08-20 | 2013-12-25 | 南京胜太迪玛斯电力系统有限公司 | Mis-locking prevention monitoring system |
| CN103559749A (en) * | 2013-11-01 | 2014-02-05 | 南京南瑞继保电气有限公司 | Process interlocking system and method of motors |
| CN106549493A (en) * | 2015-09-23 | 2017-03-29 | 珠海优特电力科技股份有限公司 | Transformer station's error-unlocking prevention control device and control method |
| CN106814661A (en) * | 2015-12-01 | 2017-06-09 | 佳霖科技股份有限公司 | Machine table monitoring interlocking system |
| CN109525038A (en) * | 2018-11-29 | 2019-03-26 | 国电南京自动化股份有限公司 | Ocs isolating switch monitoring system method of controlling security and system |
| CN111913976A (en) * | 2020-08-11 | 2020-11-10 | 广东电网有限责任公司广州供电局 | A secondary operation closed loop operation and maintenance management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101609332B (en) * | 2009-07-22 | 2012-06-06 | 天津市电力公司 | Online three-layer synchronous anti-error locking system |
| CN101692585B (en) * | 2009-10-16 | 2011-08-31 | 国电南京自动化股份有限公司 | Anti-operation locking system of transformation substation automatic system |
| CN101951028A (en) * | 2010-09-01 | 2011-01-19 | 江西省电力科学研究院 | Intelligent control scheme for transformer substation auxiliary equipment |
| CN102157983A (en) * | 2011-04-01 | 2011-08-17 | 南京南瑞继保电气有限公司 | GOOSE (generic object oriented substation event)-based five-prevention locking method of measuring and controlling device |
| CN102157983B (en) * | 2011-04-01 | 2014-04-23 | 南京南瑞继保电气有限公司 | GOOSE (generic object oriented substation event)-based five-prevention locking method of measuring and controlling device |
| CN102738892A (en) * | 2011-04-12 | 2012-10-17 | 河海大学 | Realization method of intelligent anti-error system of transformer substation based on IEC61850 |
| CN103475089B (en) * | 2013-08-20 | 2015-12-23 | 南京胜太迪玛斯电力系统有限公司 | A kind of monitoring anti-error locking system |
| CN103475089A (en) * | 2013-08-20 | 2013-12-25 | 南京胜太迪玛斯电力系统有限公司 | Mis-locking prevention monitoring system |
| CN103559749A (en) * | 2013-11-01 | 2014-02-05 | 南京南瑞继保电气有限公司 | Process interlocking system and method of motors |
| CN106549493A (en) * | 2015-09-23 | 2017-03-29 | 珠海优特电力科技股份有限公司 | Transformer station's error-unlocking prevention control device and control method |
| CN106549493B (en) * | 2015-09-23 | 2020-08-04 | 珠海优特电力科技股份有限公司 | Transformer substation anti-misoperation unlocking control device and control method |
| CN106814661A (en) * | 2015-12-01 | 2017-06-09 | 佳霖科技股份有限公司 | Machine table monitoring interlocking system |
| CN109525038A (en) * | 2018-11-29 | 2019-03-26 | 国电南京自动化股份有限公司 | Ocs isolating switch monitoring system method of controlling security and system |
| CN109525038B (en) * | 2018-11-29 | 2021-12-07 | 国电南京自动化股份有限公司 | Safety control method and system for monitoring system of contact net isolating switch |
| CN111913976A (en) * | 2020-08-11 | 2020-11-10 | 广东电网有限责任公司广州供电局 | A secondary operation closed loop operation and maintenance management system |
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