CN107276028A - Contact net current misdelivery proof system - Google Patents
Contact net current misdelivery proof system Download PDFInfo
- Publication number
- CN107276028A CN107276028A CN201710357126.8A CN201710357126A CN107276028A CN 107276028 A CN107276028 A CN 107276028A CN 201710357126 A CN201710357126 A CN 201710357126A CN 107276028 A CN107276028 A CN 107276028A
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- Prior art keywords
- contact net
- disconnecting switch
- parameter
- detector
- breaker
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
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- H02J13/0075—
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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
-
- 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
- Y04S40/126—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 wireless data transmission
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- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the present invention provides a kind of contact net current misdelivery proof system, belongs to electric power safety.The system includes：Contact net, breaker, monitor, detector, blocking device and disconnecting switch, wherein, the breaker connects bus, and the disconnecting switch is used to select to connect the contact net and the detector or connects the contact net and the breaker；The detector is used for when being connected with the contact net, detects the parameter of the contact net, and the parameter of the contact net is sent to the monitor；And the monitor is connected with the detector, during for judging whether to have organism near the contact net to have organism near the contact net according to the change of the parameter, make the breaker and the disconnecting switch akinesia.The system automatic butt net-fault state can be diagnosed and controlled in contact net interruption maintenance, discharged dispatcher and said the word by mistake the electric event of the misdelivery that causes, it is ensured that operating personnel's is perfectly safe.
Description
Technical field
The present invention relates to electric power safety, more particularly to a kind of contact net current misdelivery proof system.
Background technology
The electric locomotive of electric railway, including high ferro EMUs, special supply lines of its traction power above railway
Road --- contact net is provided, and because contact net does not have standby, not only insulation is acted on by high-tension electricity in operation, also
The mechanical impact force effect produced by the pantograph of high-speed motion in electric locomotive (or high ferro EMUs), condition of work is non-
It is often harsh, it is necessary to periodically or non-periodically overhaul.When contact net is overhauled, operating personnel is in high-altitude, once occur traction substation
Misdelivery electricity, it is possible to directly contribute upkeep operation personnel and get an electric shock or falling from high altitude, threat to life safety.In China,
All wrong power transmission event occurs in annual contact net maintenance, and lesson written in blood an urgent demand takes new technical measures to prevent contact
The electric event of electric substation's misdelivery occurs during net maintenance, to ensure the life security of upkeep operation personnel, it is ensured that contact net maintenance life
The order of work of production.
In order to prevent from occurring when contact net is overhauled the electric event of traction substation misdelivery, it is ensured that the person of upkeep operation personnel
Safe, current prior art is：
(1) electrical safety " five prevent " is performed in traction substation, content is：1) anti-error division breaker, 2) anti-band bear
Lotus division disconnecting switch, 3) anti-live connection of ground wire, 4) anti-line with ground closes breaker or disconnecting switch, 5) between anti-mistakenly entering into charged
Every.Implement the main method of electrical safety " five prevent " measure, 1) it is to be listed " to have life in equipment by traction substation operator on duty
Object works, No switching on ", overhaul of the equipments terminates to disappear makes, power transmission by dispatch issue an order, registration on duty, the program such as monitor operation Lai
Complete.2) microcomputer of traction substation utilizes screen display (including imitation screen), computer key, electric puzzle lock, mechanical coding lock
Etc. function element, the function such as automatic cover bar net door for performing division earthing, interlock.
But, " five prevent " measure in traction substation is manually set, or microcomputer is according to the instruction execution of people,
These measures personnel can release in a reverse order.It can be seen that：The measure existing defects of electrical safety " five prevent ", it is necessary to
Improve.
(2) electrical safety measurement that contact net Overhaul site is implemented is：Mounted on the contact net circuit at work section two ends
Ground wire.Overhaul site and power supply dispatching and traction substation contact instrument, are substantially intercom or mobile phone.Mutually led to
During news, intercom or mobile phone are easy by noise jamming, or because the reasons such as the careless of insider, personnel's variation are leaked
Hole；Or scheduling error is issued an order, electric substation's operator on duty's maloperation etc., contact net may be all caused to be misdelivered during overhauling
Electric event.Due to maintainer there may be be grounded line parallel situation, the high current that traction substation is misdelivered away, due to
The shunting action that ground wire and human body are constituted, upkeep operation personnel's body is passed through by some.Therefore, traction substation is misdelivered
Electricity is likely to result in contact net maintainer and got an electric shock and died or falling from high altitude.It can be seen that：Contact net Overhaul site hanging earthing conductor
Secure unique measure, it is impossible to absolute guarantee's upkeep operation personal security, it is necessary to ensured using new technology contact net examine
The life security of operating personnel during repairing.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of contact net current misdelivery proof system, and the contact net current misdelivery proof system can
With in contact net interruption maintenance automatic butt net-fault state diagnosed and controlled, discharged dispatcher and said the word by mistake and caused
The electric event of misdelivery, it is ensured that operating personnel's is perfectly safe.
To achieve these goals, the embodiment of the present invention provides a kind of contact net current misdelivery proof system, and the system includes：Connect
Touch net and breaker, the breaker connects bus, the system also includes：Monitor, detector, blocking device and keep apart
Close, wherein, the disconnecting switch is used to select to connect the contact net and the detector or connects the contact net and institute
State breaker；The detector is used for when be connected with the contact net, the parameter of the detection contact net, and by the contact
The parameter of net is sent to the monitor；And the monitor is connected with the detector, for the change according to the parameter
When change judges whether to have organism near the contact net to have organism near the contact net, sent out to the blocking device
Go out block signal, the blocking device makes the breaker and the disconnecting switch akinesia.
Preferably, the parameter make a living object proximity contact net influence parameter.
Preferably, the system also includes：Electric device, is connected with the disconnecting switch, for being driven according to control signal
The folding of the disconnecting switch.
Preferably, the disconnecting switch includes disconnecting link and two binding posts, and the disconnecting link is connected with the contact net, and first
Binding post is connected with the detector, and the second binding post is connected with the breaker.
Preferably, when the contact net has a power failure, the electric device controls the disconnecting link of the disconnecting switch and described the
One binding post is connected.
Preferably, when the contact net is powered, the electric device controls the disconnecting link of the disconnecting switch and described the
Two binding posts are connected.
Preferably, when the bus has a power failure, the electric device controls the disconnecting link of the disconnecting switch hanging.
Preferably, the disconnecting switch rotates the disconnecting link using gear transmission structure.
Preferably, the system also includes：Heating and dehumidification device, for being heated and being dehumidified, to protect in the system
Part.
Preferably, the initial parameter detected when the monitor is connected using the detector with the contact net is base
Standard, the parameter detected by after is contrasted with the initial parameter, the parameter detected after described and the initial parameter
When different, it is judged as there is organism near the contact net.
By above-mentioned technical proposal, the contact net current misdelivery proof system provided using the present invention, the system includes：Contact
Net, breaker, monitor, detector, blocking device and disconnecting switch, wherein, the breaker connects bus, the isolation
Switch for selecting to connect the contact net and the detector or connecting the contact net and the breaker；The detection
Device is used for when being connected with the contact net, detects the parameter of the contact net, and the parameter of the contact net is sent to institute
State monitor；And the monitor is connected with the detector, for judging the contact net according to the change of the parameter
When nearby whether having organism to have organism near the contact net, block signal is sent to the blocking device, it is described
Blocking device makes the breaker and the disconnecting switch akinesia.The contact net current misdelivery proof system can stop in contact net
Automatic butt net-fault state is diagnosed and controlled when electric-examination is repaiied, and has been discharged dispatcher and has been said the word by mistake the electric thing of the misdelivery that causes
Part, it is ensured that operating personnel's is perfectly safe.
The further feature and advantage of the embodiment of the present invention will be described in detail in subsequent embodiment part.
Brief description of the drawings
Accompanying drawing is that the embodiment of the present invention is further understood for providing, and constitutes a part for specification, with
The embodiment in face is used to explain the embodiment of the present invention together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure：
Fig. 1 is the structural representation for the contact net current misdelivery proof system that an embodiment of the present invention is provided；
Fig. 2 is the structural representation for the contact net current misdelivery proof system that another embodiment of the invention is provided；
Fig. 3 is the structural representation for the contact net current misdelivery proof system that another embodiment of the invention is provided；
Fig. 4 is the structural representation for the disconnecting switch that an embodiment of the present invention is provided.
Description of reference numerals
The breaker of 1 contactor 2
The detector of 3 monitor 4
The disconnecting switch of 5 blocking device 6
7 electric devices.
Embodiment
The embodiment of the embodiment of the present invention is described in detail below in conjunction with accompanying drawing.It should be appreciated that this
The embodiment of place description is merely to illustrate and explain the present invention embodiment, is not intended to limit the invention embodiment.
Fig. 1 is the structural representation for the contact net current misdelivery proof system that an embodiment of the present invention is provided.As shown in figure 1,
Contact net current misdelivery proof system includes：A kind of contact net current misdelivery proof system, the system includes：Contact net 1, breaker 2, monitoring
Device 3, detector 4, blocking device 5 and disconnecting switch 6, wherein, the breaker 2 connects bus, and the disconnecting switch 6 is used for
The selection connection contact net 1 and the detector 4 connect the contact net 1 and the breaker 2；The detector 4
For when being connected with the contact net 1, detecting the parameter of the contact net 1, and the parameter of the contact net 1 is sent to institute
State monitor 3；And the monitor 3 is connected with the detector 4, for judging the contact according to the change of the parameter
When whether net 1 nearby has organism to have organism near the contact net 1, block signal is sent to the blocking device 5,
The blocking device 5 makes the breaker 2 and the akinesia of the disconnecting switch 6.
The surface structure of monitor 3 is four square box, is manufactured using aluminium alloy or steel sheet material, with level, drawer side
Formula is arranged on the main control room of traction substation, with acousto-optic instruction device, is indicated using acoustooptic：Whether contact net 1 stops
Electricity, whether in inspecting state (having organism near contact net), whether overhaul and terminate (nobody near contact net 1).
Contact net 1 have a power failure when, monitor 3 is automatically engaged, rapid abutting joint touch net 1 automatic electricity-testing, diagnose its state automatically.Connect
When net-fault 1 restores electricity, monitor 3 is automatically exited from, and keeps sufficiently large space with contact net 1, not in the contact net 1 of operation
Upper any equipment of mounting, it is ensured that the original main electrical scheme of traction substation, contact net 1, relay protection setting value, operation mode of operation
Do not change.
Monitor 3 has the telemechanical interface of passive " dry contact " protocol form, and uploading contact net to power supply dispatching center is
It is no have a power failure, whether inspecting state, whether overhaul end etc. information；Control centre can also remote control monitor operation.
Monitor 3 has self-checking function, and equipment is all non-maintaining.
Blocking device 5 can be breaker 2 and the combined floodgate circuit of disconnecting switch 6, in the He of 5 locking breaker of blocking device 2
During disconnecting switch 6, operate anyway, disconnecting switch 6 will not be acted, likewise, breaker 2 will not also be acted, with
Fully locked disconnecting switch 6 and breaker 2.
The parameter of contact net 1 can make a living object proximity contact net 1 influence parameter, such as electric capacity and impedance, this hair
It is bright not limit, the change of direct-to-ground capacitance can be preferably detected, monitor 3 is detected when being connected with detector 4 with contact net 1
Initial capacitance on the basis of (electric capacity is data of contact net when just having a power failure, and does not now have biology necessarily near contact net
Body), the electric capacity detected by after is contrasted with initial capacitance, when the electric capacity detected after is different from initial capacitance, is judged
Nearby there is organism for the contact net 1, so that breaker 2 and the akinesia of disconnecting switch 6, to prevent misdelivery electricity, it is ensured that
Personal security near contact net.
Fig. 2 is the structural representation for the contact net current misdelivery proof system that another embodiment of the invention is provided.Such as Fig. 2 institutes
Show, the system also includes：Electric device 7, is connected with the disconnecting switch 6, for keeping apart according to control signal driving
The folding of pass 6.
The profile of electric device 7 is the body structure that stainless steel plate is made, and core is decelerator, by permanent magnet direct current motor
And NMRV double worm and gears mechanism composition, using closed structure, all drive disk assemblies are encapsulated in Al alloy shell body, structure
Compact, large carrying capacity；Being provided with prevents the protection device for burning motor, and signal is provided automatically when mechanism malfunction；
In addition to electronic, additionally it is possible to carry out hand operation.The auxiliary switch of electric device 7, disconnecting switch is provided using limit method
Disconnecting link position signalling, separating brake to 80% fracture distance after send sub-gate signal；Sent after disconnecting link connection major loop of high pressure
Switching signal.Power switch, divide-shut brake button, distant place control and local control change-over switch are provided with electric device 7, is also set
It is equipped with the position indicator and change-over switch of disconnecting link.Output connection is by the weldering of flanged plate group, the weldering of flange group, flange briquetting three
It is grouped into, it is convenient to install and adjust.The temperature and humidity controller of box house, starts or disconnects AC 220V heating and remove automatically
Wet loop, to ensure in the case of severe cold of the ice covering thickness no more than 20mm, device is in sough or extremely frigid zones in case
Normally use.The mechanical strength of casing has foot in the case of can guarantee that maximum wind velocity 35m/s and 0.5g horizontal vibrating while acting on
Enough intensity；Casing tripartite is provided with door, when operating mechanism is in any operating position, can open.
The rotation direction of the disconnecting link of disconnecting switch 6, can be controlled by the rotation direction of the output shaft of electric device 7.According to electrician
Principle, changes the sense of current of dc motor, thus it is possible to vary its rotation direction.
Fig. 3 is the structural representation for the contact net current misdelivery proof system that another embodiment of the invention is provided.Such as Fig. 3 institutes
Show, the disconnecting switch 6 includes disconnecting link and two binding posts, the disconnecting link is connected with the contact net 1, the first binding post and institute
State detector 4 to connect, the second binding post is connected with the breaker 2.
In 1 interruption maintenance of contact net, the electric device 7 controls the disconnecting link of the disconnecting switch 6 and described the
One binding post is connected；When the contact net is for 1 electricity, the electric device 7 controls the disconnecting link of the disconnecting switch 6 and described the
Two binding posts are connected；When the bus has a power failure, the electric device 7 controls the disconnecting link of the disconnecting switch 6 hanging.
Preferably, the disconnecting switch 6 rotates the disconnecting link using gear transmission structure.
Fig. 4 is the structural representation for the disconnecting switch that an embodiment of the present invention is provided.As shown in figure 4, disconnecting switch 6
The basic structure of body is：Outdoor pattern, disconnecting link horizontal rotation, disconnecting link be brass material, contact electroplate, its case hardness >=
HV110, thickness of coating >=30 μm；Underframe material is the cold rolling square tube that wall thickness is not less than 4mm, and the creep age distance of support insulator is
1600 ㎜, spacing 700mm (note：The height above sea level of territory of use be no more than 2500 meters, more than when need it is customized according to High aititude),
Support insulator is arranged on underframe, and rotation post insulator upper end band disconnecting link, bottom end bearing seat is positive and negative built with rolling bearing
To 90 degree can be rotated.Body medium carbon steel material part surface carries out galvanizing by dipping (thickness of coating >=90 μm) processing, respectively
Part is threadedly coupled to have carried out preventing from loosening handling, it is necessary to which the part of lubrication, is provided with lubrication hole, using the progress of antifreeze lubricating grease
Lubrication.
Dust storm, acid rain and extreme high/low temperature in order to solve harsh weather etc. influence, and cause the transmission mechanism of disconnecting switch 6
Corrosion or deformation, the problems such as occurring bite, tripping, disconnecting link opening and closing not in place when being likely to result in disconnecting switch back brake, according to machinery
Principle is learned, using gear drive.Because size, the number of teeth of gear are all changeless, the gearratio of generation is constant
Value；Malleation force direction is constant between flank profil, and energy transmission loss is small；The field of conjugate action between gear is relatively large, coordinates close, tolerance
Fit precision is high.Therefore, the Bevel Gear Transmission scheme combined with size is proposed in the present invention, as shown in figure 4, operation principle
It is：The vertical rotary that the output shaft motive power of electric device 7 is produced, passes to waling stripe, and change into water by bevel gear pair
Flat rotation；Again by being delivered to by bevel gear pair in the load on both sides, make support insulator axle vertical rotary, drive disconnecting switch
Plug-in strip completes separating brake, feed motion.
By above-mentioned technical proposal, the contact net current misdelivery proof system provided using the present invention, the system includes：Contact
Net, breaker, monitor, detector, blocking device and disconnecting switch, wherein, the breaker connects bus, the isolation
Switch for selecting to connect the contact net and the detector or connecting the contact net and the breaker；The detection
Device is used for when being connected with the contact net, detects the parameter of the contact net, and the parameter of the contact net is sent to institute
State monitor；And the monitor is connected with the detector, for judging the contact net according to the change of the parameter
When nearby whether having organism to have organism near the contact net, block signal is sent to the blocking device, it is described
Blocking device makes the breaker and the disconnecting switch akinesia.The contact net current misdelivery proof system can stop in contact net
Automatic butt net-fault state is diagnosed and controlled when electric-examination is repaiied, and has been discharged dispatcher and has been said the word by mistake the electric thing of the misdelivery that causes
Part, it is ensured that operating personnel's is perfectly safe.
The optional embodiment of example of the present invention is described in detail above in association with accompanying drawing, still, the embodiment of the present invention is not limited
Detail in above-mentioned embodiment, can be to the embodiment of the present invention in the range of the technology design of the embodiment of the present invention
Technical scheme carry out a variety of simple variants, these simple variants belong to the protection domain of the embodiment of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the embodiment of the present invention pair
Various possible combinations no longer separately illustrate.
In addition, can also be combined between a variety of embodiments of the embodiment of the present invention, as long as it is not
The thought of the embodiment of the present invention is run counter to, it should equally be considered as disclosure of that of the embodiment of the present invention.
Claims (10)
1. a kind of contact net current misdelivery proof system, the system includes：Contact net and breaker, the breaker connect bus, its
It is characterised by, the system also includes：
Monitor, detector, blocking device and disconnecting switch, wherein,
The disconnecting switch is used to select to connect the contact net and the detector or connects the contact net and described disconnected
Road device；
The detector is used for when be connected with the contact net, the parameter of the detection contact net, and by the contact net
Parameter is sent to the monitor；And
The monitor is connected with the detector, for judging whether have near the contact net according to the change of the parameter
When organism near the contact net to have organism, block signal is sent to the blocking device, the blocking device makes
The breaker and the disconnecting switch akinesia.
2. contact net current misdelivery proof system according to claim 1, it is characterised in that parameter object proximity of making a living connects
The parameter of net-fault influence.
3. contact net current misdelivery proof system according to claim 1, it is characterised in that the system also includes：
Electric device, is connected with the disconnecting switch, the folding for driving the disconnecting switch according to control signal.
4. contact net current misdelivery proof system according to claim 1, it is characterised in that the disconnecting switch include disconnecting link and
Two binding posts, the disconnecting link is connected with the contact net, and the first binding post is connected with the detector, the second binding post and institute
State breaker connection.
5. contact net current misdelivery proof system according to claim 3, it is characterised in that when the contact net has a power failure, institute
Stating electric device controls the disconnecting link of the disconnecting switch to be connected with first binding post.
6. contact net current misdelivery proof system according to claim 3, it is characterised in that when the contact net is powered, institute
Stating electric device controls the disconnecting link of the disconnecting switch to be connected with second binding post.
7. contact net current misdelivery proof system according to claim 3, it is characterised in that described when the bus has a power failure
Electric device controls the disconnecting link of the disconnecting switch hanging.
8. contact net current misdelivery proof system according to claim 4, it is characterised in that the disconnecting switch is passed using gear
Dynamic structure rotates the disconnecting link.
9. contact net current misdelivery proof system according to claim 1, it is characterised in that the system also includes：
Heating and dehumidification device, for being heated and being dehumidified, to protect the part in the system.
10. contact net current misdelivery proof system according to claim 1, it is characterised in that the monitor is with the detection
On the basis of the initial parameter that device is detected when being connected with the contact net, the parameter detected by after and the initial parameter pair
Than when the parameter detected after described is different from the initial parameter, being judged as there is organism near the contact net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357126.8A CN107276028B (en) | 2017-05-19 | 2017-05-19 | Contact net current misdelivery proof system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357126.8A CN107276028B (en) | 2017-05-19 | 2017-05-19 | Contact net current misdelivery proof system |
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| Publication Number | Publication Date |
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| CN107276028A true CN107276028A (en) | 2017-10-20 |
| CN107276028B CN107276028B (en) | 2019-05-03 |
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| CN201710357126.8A Active CN107276028B (en) | 2017-05-19 | 2017-05-19 | Contact net current misdelivery proof system |
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| CN205282328U (en) * | 2016-01-07 | 2016-06-01 | 马海涛 | Prevent blocking device of transformer operation back brake maloperation |
| CN205319057U (en) * | 2015-12-31 | 2016-06-15 | 国网山东省电力公司青岛供电公司 | Busbar grounding isolator has electric anti -misoperation lockout system |
| CN106025886A (en) * | 2016-07-12 | 2016-10-12 | 国网江西省电力公司赣州供电分公司 | Disconnector mechanism charged overhauling vertical connection rod fixation device |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201541058U (en) * | 2009-06-09 | 2010-08-04 | 叶宏 | Intelligent misoperation prevention system of substation primary equipment |
| CN205319057U (en) * | 2015-12-31 | 2016-06-15 | 国网山东省电力公司青岛供电公司 | Busbar grounding isolator has electric anti -misoperation lockout system |
| CN205282328U (en) * | 2016-01-07 | 2016-06-01 | 马海涛 | Prevent blocking device of transformer operation back brake maloperation |
| CN106025886A (en) * | 2016-07-12 | 2016-10-12 | 国网江西省电力公司赣州供电分公司 | Disconnector mechanism charged overhauling vertical connection rod fixation device |
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