CN103475104A - Unlocking screen for misoperation-preventive locking system of integrated automation substation - Google Patents
Unlocking screen for misoperation-preventive locking system of integrated automation substation Download PDFInfo
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- CN103475104A CN103475104A CN2013104520392A CN201310452039A CN103475104A CN 103475104 A CN103475104 A CN 103475104A CN 2013104520392 A CN2013104520392 A CN 2013104520392A CN 201310452039 A CN201310452039 A CN 201310452039A CN 103475104 A CN103475104 A CN 103475104A
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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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- 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
Abstract
The invention relates to an unlocking screen for a misoperation-preventive locking system of an integrated automation substation. Slight modification is achieved on the basis of an existing integrated automation device with a monitoring misoperation-preventive system adopted; an unlocking operation screen is additionally installed in a spacer layer of a substation automatic system; each key with an interlocking position and an unlocking position is arranged on the unlocking operation screen and corresponds to each monitoring device, with spaced locking, in the substation in a one-to-one mode; the position states (interlocking or unlocking) serve as a set of double-position remote signals to be input into an unlocking monitor unit in the screen, and the remote signals serve as new conditions to participate in five-prevention logical judgment of a relative device. As the unlocking screen for the misoperation-preventive locking system of the substation is additionally arranged in the misoperation-preventive system of the substation, the acceptance problem in reconstruction and extension projects and the difficulty problem that a prior misoperation-preventive system and a new misoperation-preventive system are used in a mixed mode in the integration and automatic transformation processes of the substation are solved, and the frequency of unlocking operation in the switching operation process can be reduced.
Description
Technical field
The present invention relates to a kind of anti-error locking system screen-unblocking of integrated automation converting station.
Background technology
At present Substation Anti-misoperation System adopts the anti-error system form of " logic blocking+electric blocking of computer supervisory control system " mostly, realizes in station, improves the anti-incorrect manipulation deadlock function between standing.In actual moving process, on the one hand, be accompanied by the increase of automation equipment quantity and the growth of service life, the automation equipment frequency that particularly bay device goes wrong or equipment remote signalling auxiliary contact is not in place progressively increases; On the other hand, transformer station changes, extension project, and particularly integrated automation of transformation stations transformation also is progressively increases trend, and reconstruction and extension project need to be verified the locked loop correctness.Because the monitoring locking has perfect full station property logic blocking function, the monitoring anti-error system is full station property logic, exists across the interval problem.Once above-mentioned two kinds of situations occur, or the interval equipment that can cause being associated can not normal running, can only apply for unlocking operation; Be subject to the impact of power failure range, expansion spacing or Comprehensive Automation Retrofit interval five-defence block can not be complete checking (in theory, usually adopt shorting stub short-circuited terminal after operational outfit observing and controlling screen to realize the remote signalling displacement of operational outfit, but misoperation danger is also very large, general person on duty dare not do like this for the purpose of careful), for later operational management stays potential safety hazard.
Fig. 1 is typical switch operation circuit theory figure, and in figure, LD is the far and near control of disconnecting link diverter switch, and PC, PO are that disconnecting link is closely controlled action button, and L is the hand operation electromagnetic lock of disconnecting link.
Wherein, computer supervisory control system has perfect full station property logic blocking function, except the barring condition of differentiating this interval electric loop, also must be differentiated by the relevant barring condition across interval other; Electric blocking is different slightly variant because of primary equipment on the spot, to open type equipment, is this equipment interval electric blocking; To combined electric appliance equipment, it is perfect electric blocking.So the wall automation equipment is the maincenter of transformer station's anti-misoperation locking, should avoid the observing and controlling anti-error system out of service as far as possible.
As can be seen from the figure, no matter be electric operating or manual operation in the switch mechanism case, or be in the observing and controlling of a distant place or straighforward operation on supervisory control comuter, all must meet " logic blocking+electric blocking of computer supervisory control system " barring condition simultaneously.
In current running process, electric blocking occurs can removing its locking by independent electric unlock key when abnormal; Equally, occur can removing its locking (being divided into two kinds of hard contact release and logic releases) by the observing and controlling unlock key when abnormal when measurement and control unit.
According to traditional design, no matter be that electric error operation proof system or observing and controlling anti-error system go wrong while causing operation not continue smoothly, all need unlocking operation, cause the frequency of transformer station's unlocking operation progressively to increase, and anti-misoperation locking device is the important technical that prevents misoperation, once lost efficacy, grid switching operation has just lost last line of defense.Statistics shows, most of misoperation is in the situation that the anti-error system afunction occurs.Therefore, should take measures to reduce the frequency and the scope of unlocking operation, the Preventing Misoperation System of Substation screen-unblocking just can be realized this point.
Simultaneously, in reconstruction and extension project, once occur once, the secondary device construction is asynchronous, to cause the examination of anti-misoperation locking not implement smoothly, it is imperfect that this causes again anti-error system to check and accept conversely, hidden danger increases and causes unlocking operation further to increase, thus reduce anti-error system the O&M personnel status in the heart, make misoperation be more prone to occur.
Summary of the invention
In order to overcome above deficiency, the invention provides a kind of integrated automation converting station anti-misoperation system screen-unblocking, by increase the Preventing Misoperation System of Substation screen-unblocking in Substation Anti-misoperation System, not only can solve the examination problem in reconstruction and extension project, can also reduce the frequency of unlocking operation in the grid switching operation process.
Main technical content of the present invention is as follows:
Change a little on the basis that has the synthetic automatic device that adopts the monitoring anti-error system now, increase by one group of measuring and controlling equipment at wall and just can solve an above-mentioned difficult problem.Install a unlocking operation screen additional at the electric substation automation system wall, the unlocking operation screen is upper for existing each measure and control device across the interval locking that " interlocking " and " release " two-position key one to one is set in station, its location status (interlocking or release) is opened into release measurement and control unit in the unlocking operation screen as one group of two-position remote signalling, this remote signalling is participated in to the five prevention logic judgement of relevant device.Under normal circumstances, key corresponding on transformer station's all intervals screen-unblocking all is placed in " interlocking " position, and now all devices participates in judging across the interval latching logic of miscellaneous equipment according to its time of day; When the corresponding key in certain interval is placed in " release " state, there is with it the grid switching operation of the equipment of latching relation not to be subject to the impact of this release interval equipment state, only need the remote signalling state of miscellaneous equipment in the judgement barring condition.In other words, the unlock key shielded by operation just can address the above problem: when in the screen cabinet, the unlock key of corresponding units is in " interlocking " position, the logic blocking of relevant device is judged according to normal logic; When in the screen cabinet, the unlock key of certain unit is in " release " position, while having with it the equipment of latching relation to carry out the logic blocking judgement, the state of not considering to be unlocked unit (namely is unlocked the unconditional five-defence block logical condition that meets the equipment of other unit of state of the equipment of unit, and no matter its virtual condition is how), as long as the remote signalling state of miscellaneous equipment in barring condition is judged.
But it may be noted that when this key is switched to " release " position, do not affect collection and the execution of remote signalling, remote control and the telemetered signal of the corresponding measure and control device of this key, only affect the judgement of associated receipts or other documents in duplicate element device five prevention logic.
By technique scheme, the present invention at least has following advantages:
According to Jiangsu Power Company " Preventing Misoperation System of Substation transformation implement directions suggestion ", Preventing Misoperation System of Substation transformation target is the anti-error system function that possesses regulation in province company " Anti-maloperation for Substation technical stipulation ", adopts the anti-error system form of " computer supervisory control system+electric blocking ".Extremely the operation disruption release caused of measurement and control unit, reconstruction and extension project and vertical examination problem and the operational management problem often run in transformation process are the problems generally faced in the monitoring anti-error system.Transformer station's unlocking operation screen can reduce the frequency and the scope of transformer station's unlocking operation, reduces the dangerous spot in reconstruction and extension project, greatly reduces the possibility of misoperation in the grid switching operation process, can in each electric pressure transformer station, widely popularize.
Successively in Suzhou, a plurality of 500 kv substations are used the Preventing Misoperation System of Substation screen-unblocking, in integrated automation of transformation stations transformation, transformer station's reconstruction and extension project and day-to-day operation work, have brought into play huge effect.When measurement and control unit or remote signalling occur can reducing the frequency of unlocking operation by it when abnormal; In reconstruction and extension project, by it, can make to check and accept more comprehensive, careful; In integrated automation of transformation stations retrofit work, the management worry in the time of can solving two cover block sytem paired runnings by it.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
The accompanying drawing explanation
Fig. 1 is the anti-error schematic diagram of supervisory control of substation;
Fig. 2 is the integrated automation converting station system block diagram;
Fig. 3 installs the front positive female disconnecting link latching relation figure of mother 25301 of screen-unblocking in embodiment;
Fig. 4 installs the positive female disconnecting link latching relation figure of mother 25301 after screen-unblocking in embodiment.
Embodiment
Reach for further setting forth the present invention technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, its embodiment, structure, feature and effect thereof that foundation the present invention is proposed, be described in detail as follows.
As shown in Figure 2, comprehensive automation system of transformer substation, comprise station level supervisory control system, master unit, wall measurement and control unit, field apparatus and be integrated in the anti-misoperation locking module in whole system, master unit wall measurement and control unit connects by the optical fiber dual ring net, main control unit connects the station level supervisory control system by electric power data network, field apparatus comprises switch, disconnecting link and can return to the locking node, the net door of position, ground wire equipment, the locking node, by sealing in the electrical wiring of field apparatus, is realized the locking to field apparatus;
The station level supervisory control system running has station level logic blocking module, and the operation of wall measurement and control unit has wall logic blocking module, and the mechanical latching module integration between the incomplete electric blocking module in this interval and disconnecting link and ground cutter is in field apparatus.The wall measurement and control unit is pressed the switch configuration, and master unit adopts A, B two-shipper standby mode each other.
Often can run into this situation in real work.As everyone knows, transformer station is very many across the interval locking, such as the bus switch operation need to judge bus grounding disconnecting link state, the lower switch tool of 3/2 mode of connection, need to sentence corresponding interval circuit (transformer) grounding switch state, the 220 kilovolts of bus heat judgement of falling action need mother interval equipment states etc.As the wall logic blocking that possesses the complete blocking function in full station, once related interval survey remote signalling is undesired, the equipment that relates to so this remote signalling in barring condition just can not operate normally.
Cause the abnormal reason of remote signalling to have a lot, relatively common are following several:
1) measurement and control unit occurs extremely, comprises that the elements such as communication disruption, sampling plate, power panel are abnormal etc.;
2) equipment such as switch, disconnecting link causes remote signalling abnormal because of reasons such as contact are not in place, terminal becomes flexible, make moist;
3) change, in extension project, affected by power failure range, this equipment state can not be changed, but in the course of receiving, needs its state to change etc.;
4) in the comprehensive automation transformation process, equipment does not also complete transformation, and its equipment remote signalling state is not also opened into automated system, but it affects grid switching operation and the examination of reforming equipment.
Certainly, the problems referred to above are if normal grid switching operation all can be readily solved by unlocking operation; If check and accept, abandon so checking simpler.But must be pointed out, the former has increased risk, the frequency of unlocking operation is higher, and habitual probability violating the regulations is just higher; Latter has been evaded risk, has stayed hidden danger, for later operational management has increased difficulty.
The invention provides a kind of integrated automation converting station anti-misoperation system screen-unblocking, increase by one group of unlocking operation screen between the wall measurement and control unit, the unlocking operation screen is the remote signalling collection plate; On screen, for station is interior, exist each measure and control device across the interval locking that " interlocking " and " release " two-position key one to one is set, its location status (interlocking or release) is opened release measurement and control unit in screen as one group of two-position remote signalling, this remote signalling is participated in to the five prevention logic judgement of relevant device.Under normal circumstances, key corresponding on transformer station's all intervals screen-unblocking all is placed in " interlocking " position, and now all devices participates in judging across the interval latching logic of miscellaneous equipment according to its time of day; When the corresponding key in certain interval is placed in " release " state, there is with it the grid switching operation of the equipment of latching relation not to be subject to the impact of this release interval equipment state, only need the remote signalling state of miscellaneous equipment in the judgement barring condition.In other words, the unlock key shielded by operation just can address the above problem: when in the screen cabinet, the unlock key of corresponding units is in " interlocking " position, the logic blocking of relevant device is judged according to normal logic; When in the screen cabinet, the unlock key of certain unit is in " release " position, while having with it the equipment of latching relation to carry out the logic blocking judgement, the state of not considering to be unlocked unit (namely is unlocked the unconditional five-defence block logical condition that meets the equipment of other unit of state of the equipment of unit, and no matter its virtual condition is how), as long as the remote signalling state of miscellaneous equipment in barring condition is judged.
It should be noted that, the installing screen-unblocking originally can not be avoided the use of unlock key fully, can only reduce its frequency of utilization, dwindles in other words the scope of release.Because the measurement and control unit for this interval occurs that abnormal or interval electric blocking occurs extremely having no idea to evade, can only fulfil unlocking operation.But if due to associated interval measurement and control unit or the abnormal operation that affects this interval equipment of remote signalling appearance, so by using screen-unblocking just can avoid locking.
But it may be noted that when this key is switched to " release " position, do not affect collection and the execution of remote signalling, remote control and the telemetered signal of the corresponding measure and control device of this key, only affect the judgement of associated receipts or other documents in duplicate element device five prevention logic.
Embodiment
Below, with under the comparatively simple double bus scheme mode of latching relation, bus connection switch disconnecting link 25301 is example, and its principle is described.The five-defence block logic diagram that Fig. 3 is the positive female disconnecting link of mother (wherein 2530 is positive female bus grounding disconnecting link for bus connection switch numbering, 253047 and 253048 is respectively bus connection switch grounding switch, 220411), Fig. 4 are the latching logic figure (wherein positive bus-bar interval unlock key state in " positive female interval release " and " positive female interval interlocking " difference homographic solution screen locking) after the installation screen-unblocking.
As can be seen from the figure, on screen-unblocking, mother interval unlock key is at " interlocking " state under normal circumstances, and the latching logic of 25301 disconnecting links is normal logic; When occurring that the remote signalling of positive bus-bar grounding switch is abnormal, mother observing and controlling judges that 24301 disconnecting link five prevention logics do not meet, and operation can not normally be carried out; If the unlock key corresponding positive bus-bar interval on screen-unblocking is switched to " release " position from " interlocking " position, operation just can normally have been carried out so.Although now in barring condition, need not judge bus ground cutter state, other condition all needs normal judgement.
The screen-unblocking of setting up itself is not directly removed the locking at certain interval, only removes remote signalling and the impact of abnormal bay device on other normal operation equipment occur.Abnormal equipment occurs for remote signalling, can carry out state confirmation by the multivariate method required in " electric power safety working regulation ", guarantee the correctness of operation.
In actual motion work, the introducing of screen-unblocking can be brought into play huge effect.When measurement and control unit or remote signalling occur can reducing the frequency of unlocking operation by it when abnormal; In reconstruction and extension project, by it, can make to check and accept more comprehensive, careful; In integrated automation of transformation stations retrofit work, the management worry in the time of can solving two cover block sytem paired runnings by it.
Case 1: the application in transformer station's heat is fallen bus
Certain 500 kv substation is carried out the grid switching operation of 220 kilovolts of 4X32 lines by 220 of the female heat of 220 kilovolts of I kilovolt II bus, occur that when pulling open the 4X321 disconnecting link disconnecting link can not operate, through after inspection, find be the female disconnecting link states of 25301 bus connection switch I at bus connection switch interval uncertain (state that mediates, neither in a minute position, also not in co-bit) due to.
Wherein, the 220 kilovolts of hot a homogeneous example showing an inverse connection between the middle term and the major term lock of the female 4X321 of I conditions are: 4X322 closing position, the 220 kilovolts of female mother 2530 switch closing positions of I II, the female disconnecting link closing position of 25301 bus connection switch I, the female disconnecting link closing position of 25302 bus connection switch II, 4X32 switch grounding switch 4X3244 and 4X3246 open positions, 220 kilovolts of female grounding switch 220411 open positions of I.
If the operations staff can not get rid of that this is abnormal in the short time, two selections are now arranged: the one, directly apply for release, remove the locking of measurement and control unit.Because 220 kilovolts of systems of this transformer station are combined electrical apparatus (hereinafter to be referred as " GIS ") equipment, the person on duty can not directly see whether interval bus disconnecting link operates and put in place, and in system, once occurred in the GIS equipment heat process of falling the bus pulling open the female disconnecting link of I because the female disconnecting link of II does not close a floodgate to put in place, the misoperation of on-load broaching tool lock appears.So direct unlocking operation, the person on duty is not sure, and emit certain risk; It is exactly to wait for that the maintainer comes to get rid of abnormal that another one is selected.This transformer station, apart from 1 hour range of driving in urban district, adds time, and estimation will wait two hours.Therefore, two selections are all imperfect.
After the installing screen-unblocking, all problems is readily solved.At first, by observing the size of current of passing through at the mother interval, on-the-spot disconnecting link remote signalling state, machinery indication, can confirm that mother interval switch, disconnecting link are all at closing position, can problem identificatioin go out abnormal that reasons such as shake at the secondary auxiliary contact cause.Secondly, only need that unlocking operation is shielded to unlock key corresponding to the female mother 2530 switch measure and control devices of upper 220 kilovolts of I II and be switched to " release " position from " interlocking " state, now 4X321 has allowed in the combined floodgate condition to reject the judgement of mother interval switch, disconnecting link state, but also needs system validation 4X322 closing position, 4X3244 open position, 4X3246 open position, 220411 open positions.Now, can determine that the condition that causes operation exception of state is disallowable, operation can be proceeded.
Case 2: the application in integrated automation of transformation stations transformation process
As everyone knows, in the full substation automation system transformation process of transformer station, must be faced with equipment component and complete transformation, and the situation that the transformation of other equipment is being carried out or remained.Do not complete those intervals of automatic improving, its primary equipment remote signals just can not be uploaded to station level equipment, will affect those and exist the equipment across the interval locking to carry out grid switching operation.
Take and toply mention that case is as example, if the automatic improving at mother interval does not also complete, and the transformation at 220 kilovolts of ripe still 4X32 line intervals has finished, and so now carries out heat and falls operation and also will face the problem of " release ".After installing screen-unblocking cabinet, problem can easy to doly solve again.Before transformation, the logical condition after can finishing the logical base at full station according to transformation fully set, and transformation on screen-unblocking is not completed to unlock key corresponding to interval simultaneously and is switched to " release " position, and that has transformed is switched to " interlocking " position.The grid switching operation carried out like this, previously still can normally carry out.For the equipment that completes transformation, carry out new five-prevention locking system; For the equipment that does not complete transformation, carry out old five-prevention locking system (most of is the micro_computer five_proof system).
Case 3: the application in transformer station's reconstruction and extension project
The transformer station's enlarging line segregation under common double bus scheme mode of take is example, and now, because increased new interval, the barring condition of bus grounding disconnecting link can change.In barring condition due to bus grounding disconnecting link, require on bus this section bus disconnecting link of all circuits all at open position, but these circuits also can not have an opportunity to have a power failure, so its barring condition are difficult to verify comprehensively all in running status.But, by the unlock key on screen-unblocking, this problem is not difficult to solve.
During checking, this section bus should be stopping the labour state, and except operational outfit, the miscellaneous equipment in the bus grounding disconnecting link barring condition (such as expansion spacing equipment, pressure become disconnecting link etc.) all can carry out the execute-in-place cooperation.At first, the unlock key that on screen-unblocking, all working lines are corresponding is switched to " release " position, miscellaneous equipment is operated to the state that meets bus ground cutter barring condition, and checking bus ground cutter can divide, closing operation; Subsequently, by working line on screen-unblocking, corresponding unlock key is switched to " interlocking " position in turn, verifies one by one circuit bus disconnecting link locking bus grounding disconnecting link when running status, and bus grounding disconnecting link can not divide, closing operation.
The above, it is only preferred embodiment of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (1)
1. the anti-error locking system screen-unblocking of an integrated automation converting station, it is characterized in that: at the existing electric substation automation system wall of the synthetic automatic device of monitoring anti-error system that adopts, install a unlocking operation screen additional, described unlocking operation screen is upper for existing each measure and control device across the interval locking that " interlocking " and " release " two-position key one to one is set in station, the location status of described interlocking or release is opened into release measurement and control unit in the unlocking operation screen as one group of two-position remote signalling, described remote signalling is participated in to the five prevention logic judgement of relevant device, under normal circumstances, key corresponding on transformer station's all intervals screen-unblocking all is placed in " interlocking " position, and now all devices participates in judging across the interval latching logic of miscellaneous equipment according to its time of day, when the corresponding key in certain interval is placed in " release " state, there is with it the grid switching operation of the equipment of latching relation not to be subject to the impact of this release interval equipment state, only need the remote signalling state of miscellaneous equipment in the judgement barring condition.
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| CN105656202A (en) * | 2016-01-27 | 2016-06-08 | 江苏省电力公司检修分公司 | Measurement and control five-prevention operation device for reducing unlocking frequency of five-prevention system of substation |
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| CN108376966A (en) * | 2018-03-09 | 2018-08-07 | 中国电力科学研究院有限公司 | Intelligent substation anti-misoperation locking logic interval association relationship analysis method and system |
| CN108376966B (en) * | 2018-03-09 | 2022-08-19 | 中国电力科学研究院有限公司 | Method and system for analyzing correlation relationship between misoperation-preventive locking logic intervals of intelligent substation |
| CN108429344A (en) * | 2018-03-27 | 2018-08-21 | 国网山东省电力公司潍坊供电公司 | A kind of substation equipment method of operation accuracy is from check method |
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