CN102403796A - Protocol self-adapting access method of intensive management and control system of unwatched transformer substation - Google Patents
Protocol self-adapting access method of intensive management and control system of unwatched transformer substation Download PDFInfo
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- CN102403796A CN102403796A CN2011103326841A CN201110332684A CN102403796A CN 102403796 A CN102403796 A CN 102403796A CN 2011103326841 A CN2011103326841 A CN 2011103326841A CN 201110332684 A CN201110332684 A CN 201110332684A CN 102403796 A CN102403796 A CN 102403796A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a working method of a remote management and control system of an automatic system of an unwatched transformer substation. The intensive management and control system comprises a remote virtual terminal, a remote virtual patrol module and a protocol self-adapting access module. In work, the working method comprises the steps that the remote virtual terminal patrols the whole automatic system of the transformer substation through the remote virtual patrol module and automatically displays state information of patrolled equipment in real time; when the equipment is found to be abnormal, the remote virtual terminal starts and stops the software and the hardware of the corresponding equipment remotely so as to realize the remote management and control; the state information of the patrolled equipment is written into an alternate patrol log; during the remote management and control, for multiple pieces of equipment adopting different communication protocols, the different communication protocols are automatically recognized according to feature codes of the different communication protocols and converted into one communication protocol; and then the software and the hardware are started and stopped.
Description
Technical field
The present invention relates to the technical field of the long-range management and control of unattended substation, specifically is a kind of stipulations self-adaptive access method of intensification managing and control system of unattended substation.
Background technology
Existing unattended substation is equipped with equipment such as complex automatic system background devices, failure wave-recording information system; Can gather the situation such as details, working condition, event information of the equipment of all accesses; But communication aspects is confined to this transformer station, does not accomplish teletransmission.Therefore, the ruuning situation of some system's background devices lacks effectively keeps watch on, and often can not get for a long time finding after fault or the deadlock and in time handles, and has brought hidden danger for its performance should have to act on.In case during unit exception, usually the signal received of main station monitoring is too simple, detailed fault message such as has only to be on the scene and could to obtain at the O&M personnel, can't the very first time make discriminatory analysis.When it come to arrive the fault of 220kV major network, the higher level dispatches and requires the report of quick submission incident details, has under the accident conditions relating to a plurality of transformer stations, gives the bigger pressure that brings of O&M unit.Because fault or abnormal information that main station monitoring is received are limited, whether there is problem to be difficult to judge simultaneously, brings certain blindness for the preparation of repairing spare unit spare, often have influence on the operating efficiency of repairing automation equipment.
The mode that work on the spot is gone in employing to automated system in standing carry out regular visit, check definite value, the running status assessment also taken a large amount of manpowers, vehicle, time resource.
Summary of the invention
The technical problem that the present invention will solve provides a kind of stipulations self-adaptive access method of intensification managing and control system of unattended substation; The operating efficiency of, power system fault analysis unusual to the unattended substation automation equipment to improve and processing shortens stopping the labour time of unusual and accident equipment.
For solving the problems of the technologies described above, in the stipulations self-adaptive access method of the intensification managing and control system of unattended substation provided by the invention, said intensification managing and control system comprises:
Remote dummy terminal: be used to realize the remote emulation of unattended substation automated system, and long-range electric substation automation system carried out start and stop soft, hardware;
Remote dummy tour module: be used to simulate the operator on duty and make an inspection tour whole electric substation automation system by preset taking turn plan; In the tour process, will be shown through the display at said remote dummy terminal in real time by the state information of the equipment of tour automatically; For the unusual condition in the tour process, control said remote dummy terminal and carry out audible and visual alarm; Simultaneously to being write the taking turn daily record by the state information of the equipment of tour;
Stipulations self adaptation AM access module: be used for when the equipment of the different communication protocol of a plurality of employings of long-range management and control electric substation automation system; According to the condition code in each communication protocol, discern various communication protocols automatically and with a kind of communication protocol of converting to of various communication protocols.Need the equipment of long-range management and control numerous in the transformer station, relate to different producers, different stipulations.In order to adapt to the equipment of various different stipulations, native system has been developed the stipulations adaptation module.Module possesses the ability of resolving transformer station's configuration language (SCL) text, also possesses interface equipment information simultaneously and goes into library facility, can device attribute and communication element registration thereof be got into the model repository.To exist the intelligent electronic device configuration information in the model repository to read in internal memory then, and, it carried out modeling according to its information of IEC61850 regular weaves.Former, the access of this different stipulations equipment realizes that through hardware module native system utilizes software to realize the function of hardware.
Whole electric substation automation system is maked an inspection tour through remote dummy tour module in the remote dummy terminal; In the tour process, will be shown through the display at said remote dummy terminal in real time by the state information of the equipment of tour automatically; When the unit exception in the discovery electric substation automation system, through said remote dummy terminal remote corresponding apparatus is carried out start and stop soft, hardware, promptly realize long-range management and control; Simultaneously to being write the taking turn daily record by the state information of the equipment of tour.
Said stipulations self-adaptive access method comprises: when carrying out said long-range management and control; Equipment to the different communication protocol of a plurality of employings; According to the condition code in each communication protocol; Automatically discern various communication protocols and, carry out start and stop soft, hardware then a kind of communication protocol of converting to of various communication protocols.
Said remote dummy terminal module is suitable for the physical equipment with electric substation automation system, invents the analog machine on the computer, monitor the various data of said physical equipment directly show through display.
Said intensification managing and control system also comprises: equipment is logined automatically and is published module on the spot, is used for the long-range management and control at equipment, under the normal condition, when signing in to remote equipment, needs input user's name and login password.In native system, through technological means, utilize good login account number of configured in advance and password (this username and password and the user account title in system is bound), realize the automatic login of remote equipment.In addition, when withdrawing from certain equipment, the function that automatically locks this device screen is provided, has effectively guaranteed by the information security of monitoring equipment.
Equipment is logined automatically and is published module on the spot, provides to see through the security protection system of equipment on the spot, logins automatically and publishes the functional module of equipment on the spot.Under the normal condition, when signing in on the spot equipment, need safety certification.In native system,, utilized the Isa secret file of Windows through technological means; Implantation is by in the equipment on the spot of management and control; And use 256 the SSLv3 technology secrecy keyboards and the mouse signal of standard, and communicate with the secret file, realize the automatic login of equipment on the spot.In addition, when withdrawing from certain equipment, the function that automatically locks this device screen is provided, has effectively guaranteed by the information security of monitoring equipment.
The technique effect that the present invention has: the long-range managing and control system of intensification of (1) unattended substation automated system of the present invention; Adopt advanced IP-Based KVM technology; According to unattended substation automated system novel maintenance demand; In conjunction with the secondary Safe Protection requirement; Novel maintenance system based on the automated system of the unattended substation of wide area network and remote dummy terminal technology is provided, has formulated related management standard, workflow of electric substation automation system novel maintenance etc.Improved the operating efficiency of, power system fault analysis unusual and processing to the unattended substation automation equipment; For the analysis of main equipment health status, synergic system and auxiliary system provides full and accurate data, be beneficial to comprehensively carrying out in a deep going way of electric substation automation system repair based on condition of component work.Reduced and adopted the mode of going work on the spot automated system in standing is carried out regular visit, checked definite value, the running status assessment is shared a large amount of manpowers, vehicle, time resource.(2) automation of transformation substations novel maintenance system based on wide area network and remote dummy terminal technology of the present invention; Realized the unified management of electric substation automation system centralization, hardware and software platform, effective simplification the problem of the managerial confusion that disperses to bring owing to equipment; " localization " management mode to remote equipment is provided, has improved the response speed of problem greatly, reduced being maintained as cost, reduced the meaningless labour intensity of personnel.System provides safe management means, has guaranteed handling safety, and standard O&M personnel's operation behavior guarantees the automated system safe and reliable operation.The use of novel maintenance system can greatly improve the efficient of electric substation automation system O&M, has reduced human cost, and being widely used of system also will promote operating standard, modification rules to further develop.After adopting novel maintenance system, patrol and examine, operate distant place controlled device, information is checked all will have bigger differently with workflow in the past with revising or the like, needs the relevant operation of establishment, maintenance procedure, satisfies the device security under the new situation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated:
The intensification managing and control system of the unattended substation of present embodiment comprises:
The remote dummy terminal is (during practical implementation; This remote dummy terminal is a computer that remote dummy terminal system software is installed): the remote terminal emulation that the Telnet agreement that is similar to Internet is provided; Can be embedded in the service system at no interface; Allow the user through being remotely logged in the virtual terminal, be connected to the destination service system.Can realize the remote emulation of unattended substation automated system through this The Application of Technology, long-range automated system carried out start and stop soft, hardware.
The remote dummy polling module: provide to be similar to the administration module that the operator on duty makes an inspection tour behavior, the whole process that the simulation operator on duty makes an inspection tour according to operator on duty's tour requirement, customizes out the taking turn plan that meets the rules requirement.In the process of taking turn, the state information that will be maked an inspection tour equipment automatically with the mode of real-time desktop be presented in the operator on duty in face of.Unusual condition in the taking turn process provides alarm modes such as acousto-optic.Facility information in the time of all taking turns writes the taking turn daily record.
Equipment is logined automatically and is published module on the spot: in the long-range management and control of equipment, under the normal condition, when signing in to remote equipment, need input user's name and login password.In native system, through technological means, utilize good login account number of configured in advance and password (this username and password and the user account title in system is bound), realize the automatic login of remote equipment.In addition, when withdrawing from certain equipment, the function that automatically locks this device screen is provided, has effectively guaranteed by the information security of monitoring equipment.
Stipulations self adaptation AM access module: need the equipment of long-range management and control numerous in the transformer station, relate to different producers, different stipulations.In order to adapt to the equipment of various different stipulations, native system has been developed the stipulations adaptation module.For certain equipment that need insert,, just can insert this equipment easily then if simple stipulations configuration is then carried out in the not statement in the stipulations storehouse of system of the stipulations of this equipment.Former, the access of this different stipulations equipment realizes that through hardware module native system utilizes software to realize the function of hardware.
In the above-mentioned remote dummy terminal module, core is through instrument board, and perhaps monitoring scene is showed the information of equipment to be detected.The electric substation automation system unification is being arranged a plurality of virtual terminal panel boards according to user's wish; Each shows the key message that certain automated system is gathered; Each virtual terminal interface can convergent-divergent; Can move transposition, show the content that the operation operator on duty pays close attention to, and abundant virtual terminal information customization function is provided.
In the above-mentioned remote dummy polling module; Its core is through computer picture; Initiatively invocation facility is various by concern information, and according to significance level, initiatively " propelling movement " is in face of administrative staff; It is on-the-spot to make that administrative staff need not arrive substation equipment, also can accomplish the tour work of equipment.For unusual situation, can also write down automatically and report, exempted the various work that administrative staff carry out for abnormality processing.
Above-mentioned equipment is on the spot logined automatically and is published in the module; Its core is to analyze and write down the login mode of various server apparatus; The function privilege authentication of coupling system and equipment purview certification; Set up the matching relationship between user, equipment, the lander, and utilize the bottom communication rule of server apparatus, send the instruction of screen locking and screen unlocking to server.Thereby avoided security risk effectively.
Module during above-mentioned stipulations self adaptation inserts, its core is the condition code based on electric power automation communication protocol, discerns and accomplish the conversion of various stipulations automatically, so that handle various stipulations with a kind of unified form.When the equipment of different vendor docks with native system, can discern stipulations that this vendor equipment is used automatically, load and dispose this stipulations automatically.Removed numerous and diverse human configuration from, reduced system's arrangement cost, avoided causing system normally to move because of mistake appears in configuration.
The enforcement of unattended substation remote centralized supervising platform make that not only technology such as KVM over IP and the Internet are specifically realized in electric power system, and its advantage is fully reflected also in the system management of electric power system:
(1) the single-point technical management carries out the transition to comprehensive centralized management
The quantity of each rank transformer station and various kinds of equipment increases day by day,, substation management is had higher requirement.After having adopted the remote centralized supervising platform, way to manage has carried out the transition to the mode that control terminal can be managed comprehensive centralized management of overall substation equipment that only needs by every original platform substation equipment once the single-point technical management of cover mouse-keyboard display.
(2) the conventional system management carries out the transition to the safety system management
Perfected operation empowerment management mechanism: in present management mode, the technical staff's of participative management empowerment management mechanism is unsound, and the most systems management is to be based upon on the basic foundation of trust of administrative staff, but objectively is unscientific.And after having adopted concentrated controling management software, can carry out detailed partition to each user's management and operating right, and set different administration authorities according to different administrative staff's responsibilities, follow " authority is minimum " principle, improved security of system.
(3) regional local management carries out the transition to the remote control management
Generally adopt today of open IT framework at electric power enterprise; Managerial isolated island phenomenon remains ubiquitous; And be a main cause that influences the electric power enterprise information system capabilities of technical support, this mainly is not solve the remote technology support issue comprehensively.Adopted after the ivr platform, just solved the problem of the remote control management.
(4) management of " passive " system monitoring carries out the transition to the management of " initiatively " system monitoring
The technical support personnel at center is a fireman's role what many times play the part of at present.When the network that is distributed in each transformer station, work station or use when various catastrophic failure occurring, the technical staff must find and deal with problems apace, otherwise the production business will be affected, even can produce serious consequence.Because too many potential enchancement factor meeting traffic affecting availability and performance are arranged; The system maintenance personnel have to carry out the work with the mode of " problematic drive "; In management system, also managed, be difficult to guarantee " grade of service " or " service quality " of whole service system by system.The reason that causes this problem is that the mode to the system implementation monitoring management lags behind.Traditional system monitoring management tool generally adopts " passive type " mode of operation: monitor the characteristic parameter of various systems, according to monitoring management strategy (Policy) situation is made and being judged and processing.Obviously, " solving after going wrong " is to be difficult to adapt to " the professional of bonding that closes " require again.The approach that solves such problem is introduced intelligentized means exactly, thus monitoring management system " initiatively ".And after having introduced novel maintenance system, administrative staff monitor the server of being managed at any time, just can come to solve through telemanagement once pinpoint the problems at once, thereby ensure the professional normal operation in regulation and control center.
Novel maintenance system main website hardware mainly comprises application server, database server and 3 parts of certificate server, is deployed in city's company control centre machine room.Operation moves the DB2 database based on the novel maintenance service of C/S framework on the database server on application server, run user authentication service on the certificate server.
Novel maintenance equipment in the system mainly contains IP-Based KVM Server and IP-Based KVM Client.IP-Based KVM Server is deployed in city's company control centre machine room; In the transformer station that inserts monitoring, dispose IP-Base KVM Client equipment; Be connected through the optical fiber private network between KVM Server and the KVM Client, form novel maintenance network outside the band from the control centre to each transformer station.Complex automatic system in the transformer station, switch, remote power supply management, backstage protective device, video monitoring will insert IP-Base KVM terminal, realize the remote maintenance to these equipment and system.
Land novel maintenance system and need pass through the physical security authenticate device through controlling main platform, guaranteed handling safety, standard O&M personnel's operation behavior guarantees the automated system safe and reliable operation.
Use the remote power supply management devices equipment such as supervisory control of substation main website, switch are carried out power management; When the machine situation appears delaying in main station system; Can restart server through the remote power supply management; Improve the response speed of problem greatly, reduced maintenance cost, reduced the meaningless labour intensity of personnel.
The view layer mainly combines JSP to realize with ExtJs.On ways of presentation, come standard page pattern through CSS.Key-course is realized circulating with the control of the page with the Struts framework.Business Logic is made up of a series of Service, mainly carries out Business Processing, and each Service is the business function of one group of tight association, and these business functions call the data, services layer interface and accomplish persistence.
Business Logic is concerned about service logic.Be designed to thread-safe, and be single instance mode, realize with JavaBean.
Data access layer mainly is responsible for data sources such as access relational databases, and is data transaction that Java object programs is used.Here carry out alternately through ibatis and database,, and combine the spring framework to realize visit and operation data with JavaBean definition of data object.
Obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not to be qualification to execution mode of the present invention.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all execution modes.And these belong to conspicuous variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (1)
1. the stipulations self-adaptive access method of the intensification managing and control system of a unattended substation is characterized in that:
Said intensification managing and control system comprises:
Remote dummy terminal: be used to realize the remote emulation of unattended substation automated system, and long-range electric substation automation system carried out start and stop soft, hardware;
Remote dummy tour module: be used to simulate the operator on duty and make an inspection tour whole electric substation automation system by preset taking turn plan; In the tour process, will be shown through the display at said remote dummy terminal in real time by the state information of the equipment of tour automatically; For the unusual condition in the tour process, control said remote dummy terminal and carry out audible and visual alarm; Simultaneously to being write the taking turn daily record by the state information of the equipment of tour;
Stipulations self adaptation AM access module: be used for when the equipment of the different communication protocol of a plurality of employings of long-range management and control electric substation automation system; According to the condition code in each communication protocol, discern various communication protocols automatically and with a kind of communication protocol of converting to of various communication protocols;
Whole electric substation automation system is maked an inspection tour through remote dummy tour module in the remote dummy terminal; In the tour process, will be shown through the display at said remote dummy terminal in real time by the state information of the equipment of tour automatically; When the unit exception in the discovery electric substation automation system, through said remote dummy terminal remote corresponding apparatus is carried out start and stop soft, hardware, promptly realize long-range management and control; Simultaneously to being write the taking turn daily record by the state information of the equipment of tour;
Said stipulations self-adaptive access method comprises: when carrying out said long-range management and control; Equipment to the different communication protocol of a plurality of employings; According to the condition code in each communication protocol; Automatically discern various communication protocols and, carry out start and stop soft, hardware then a kind of communication protocol of converting to of various communication protocols.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510537874.5A CN105356595B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive remote-control system |
| CN201510537821.3A CN105356594B (en) | 2011-10-28 | 2011-10-28 | Intensive managing and control system |
| CN201510537896.1A CN105356596B (en) | 2011-10-28 | 2011-10-28 | The intensive remote-control system of unattended substation |
| CN201510538075.XA CN105356597B (en) | 2011-10-28 | 2011-10-28 | The intensive managing and control system of unattended substation |
| CN201510538144.7A CN105356598B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive managing and control system of unattended substation |
| CN201110332684.1A CN102403796B (en) | 2011-10-28 | 2011-10-28 | The stipulations self-adaptive access method of the intensive managing and control system of unattended substation |
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| CN201110332684.1A CN102403796B (en) | 2011-10-28 | 2011-10-28 | The stipulations self-adaptive access method of the intensive managing and control system of unattended substation |
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| CN201510537874.5A Division CN105356595B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive remote-control system |
| CN201510538075.XA Division CN105356597B (en) | 2011-10-28 | 2011-10-28 | The intensive managing and control system of unattended substation |
| CN201510538144.7A Division CN105356598B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive managing and control system of unattended substation |
| CN201510537821.3A Division CN105356594B (en) | 2011-10-28 | 2011-10-28 | Intensive managing and control system |
| CN201510537896.1A Division CN105356596B (en) | 2011-10-28 | 2011-10-28 | The intensive remote-control system of unattended substation |
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| CN102403796B CN102403796B (en) | 2015-09-16 |
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| CN201510538144.7A Active CN105356598B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive managing and control system of unattended substation |
| CN201510538075.XA Active CN105356597B (en) | 2011-10-28 | 2011-10-28 | The intensive managing and control system of unattended substation |
| CN201510537874.5A Active CN105356595B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive remote-control system |
| CN201510537821.3A Active CN105356594B (en) | 2011-10-28 | 2011-10-28 | Intensive managing and control system |
| CN201510537896.1A Active CN105356596B (en) | 2011-10-28 | 2011-10-28 | The intensive remote-control system of unattended substation |
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| CN201510538075.XA Active CN105356597B (en) | 2011-10-28 | 2011-10-28 | The intensive managing and control system of unattended substation |
| CN201510537874.5A Active CN105356595B (en) | 2011-10-28 | 2011-10-28 | A kind of intensive remote-control system |
| CN201510537821.3A Active CN105356594B (en) | 2011-10-28 | 2011-10-28 | Intensive managing and control system |
| CN201510537896.1A Active CN105356596B (en) | 2011-10-28 | 2011-10-28 | The intensive remote-control system of unattended substation |
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| CN102361354A (en) * | 2011-10-28 | 2012-02-22 | 江苏省电力公司常州供电公司 | Remote intensive management and control system of unattended converting station automatic system |
| CN106558917A (en) * | 2016-11-30 | 2017-04-05 | 国家电网公司 | A kind of secondary operational system protective relaying device inspection method |
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| CN108024090B (en) * | 2016-11-02 | 2020-01-17 | 杭州海康威视系统技术有限公司 | Abnormity positioning method and device for video monitoring platform |
| CN108494737A (en) * | 2018-02-24 | 2018-09-04 | 浙江远望通信技术有限公司 | A kind of video monitoring safety cut-in method based on equipment feature recognition |
| CN108873778A (en) * | 2018-07-03 | 2018-11-23 | 巴中云创空间科技服务有限公司 | A kind of remote supervisory station point operating condition monitoring equipment |
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| CN101854269A (en) * | 2010-04-06 | 2010-10-06 | 珠海市鸿瑞信息技术有限公司 | Information safety operation and maintenance supervising platform of electric power secondary system |
| CN102361354A (en) * | 2011-10-28 | 2012-02-22 | 江苏省电力公司常州供电公司 | Remote intensive management and control system of unattended converting station automatic system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102361354A (en) * | 2011-10-28 | 2012-02-22 | 江苏省电力公司常州供电公司 | Remote intensive management and control system of unattended converting station automatic system |
| CN102361354B (en) * | 2011-10-28 | 2015-12-16 | 江苏省电力公司常州供电公司 | The remote intensive managing and control system of unattended substation automated system |
| CN106558917A (en) * | 2016-11-30 | 2017-04-05 | 国家电网公司 | A kind of secondary operational system protective relaying device inspection method |
| CN106558917B (en) * | 2016-11-30 | 2019-04-30 | 国家电网公司 | A kind of secondary operational system protective relaying device inspection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105356595A (en) | 2016-02-24 |
| CN105356594A (en) | 2016-02-24 |
| CN102403796B (en) | 2015-09-16 |
| CN105356598A (en) | 2016-02-24 |
| CN105356597A (en) | 2016-02-24 |
| CN105356596B (en) | 2018-11-23 |
| CN105356596A (en) | 2016-02-24 |
| CN105356594B (en) | 2018-09-21 |
| CN105356598B (en) | 2018-11-06 |
| CN105356597B (en) | 2018-11-23 |
| CN105356595B (en) | 2018-09-21 |
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