CN109870647A - A kind of monitoring system of breaker open operation electric loop failure - Google Patents
A kind of monitoring system of breaker open operation electric loop failure Download PDFInfo
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- CN109870647A CN109870647A CN201910241533.1A CN201910241533A CN109870647A CN 109870647 A CN109870647 A CN 109870647A CN 201910241533 A CN201910241533 A CN 201910241533A CN 109870647 A CN109870647 A CN 109870647A
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- breaker
- power supply
- normally closed
- position relay
- closed contact
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 45
- 238000004891 communication Methods 0.000 claims abstract description 30
- 238000004146 energy storage Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 10
- 238000007689 inspection Methods 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
This application discloses a kind of breaker open operation electric loop fault monitoring systems, it include: DC power supply, microcomputer protecting controller, breaker assists normally closed contact, breaker assists normal opened contact, closing position monitors red light, communication processor and background monitoring machine, breaker is in operating normally power supply process, operator both can monitor red light by the closing position on the control cabinet door face board of inspection high-tension switch cabinet at the scene to judge that whether complete the sub-gate circuit of breaker is reliable, it can be by checking live microcomputer protecting device, the warning message for the control loop template that background monitoring machine is checked can also be passed through, without going on-the-spot make an inspection tour, breaker open operation electric loop failure can be learned in real time, to adopt an effective measure in time, quickly eliminate brake division loop of circuit breaker failure, ensure the safe and reliable operation of breaker.
Description
Technical field
This application involves brake division loop of circuit breaker malfunction monitoring technical fields, and in particular to a kind of breaker open operation electrically returns
The monitoring system of road failure.
Background technique
Breaker is to refer to cutting or no-load current and load current in closed circuit, and work as system jam
When can by protective device, cut off overload electric current and short circuit current device.Therefore in the power system, breaker also right and wrong
Often important power supply unit.In normal operation, the separating brake electric control loop of breaker should be complete for breaker, when route occurs
When short trouble, breaker trip protection exit relay is acted, junction closure, and breaker open operation coil obtains electric, drive point
The movement of lock operating mechanism, completes the tripping of breaker, thus disengagement failure point.
But if element fault occurs in brake division loop of circuit breaker, cause circuit imperfect, cannot normal sub-switching operation,
When meeting line short fault, breaker protection can tripping, can only overstepping disconnect fault point, will lead to bus large area mistake
Electrification.If can find breaker open operation electric loop failure in time and then exclude in time can be to avoid bus large area power loss
Accident.
Therefore, how in time discovery breaker open operation electric loop failure is this field urgent problem to be solved.
Summary of the invention
In order to solve the above-mentioned technical problem the application, proposes following technical solution:
In a first aspect, the embodiment of the present application provides a kind of breaker open operation electric loop fault monitoring system, comprising: straight
Galvanic electricity source, microcomputer protecting controller, breaker auxiliary normally closed contact, breaker auxiliary normal opened contact, closing position monitoring are red
Lamp, communication processor and background monitoring machine, in which: the microcomputer protecting controller includes: tripping position relay coil, closes
Gate position relay coil, closing operation position relay auxiliary normal opened contact, closing operation position relay auxiliary normally closed contact and tripping
Position relay assist normally closed contact, the tripping position relay coil, closing operation position relay coil and trip position after
One end of electric appliance auxiliary normally closed contact is electrically connected with the anode of the DC power supply, the both ends of the breaker auxiliary normally closed contact
It is electrically connected respectively with the cathode of the other end of the tripping position relay coil and the DC power supply, the breaker auxiliary
The both ends of normal opened contact are electrically connected with the cathode of the other end of the closing operation position relay coil and the DC power supply respectively；
One end of the closing operation position relay auxiliary normally closed contact and the other end of tripping position relay auxiliary normally closed contact
Connecing in the microcomputer protecting controller is arranged in the other end of electrical connection, the closing operation position relay auxiliary normally closed contact
In line terminals；The both ends of the closing operation position relay auxiliary normal opened contact monitor one end of red light with the closing position respectively
It is electrically connected with the cathode of DC power supply, the anode of the other end and the DC power supply of the closing position monitoring red light is electrically connected
It connects；The communication processor signal receiving end and the microcomputer protecting controller communicate to connect, the communication processor signal
Transmitting terminal and the background monitoring machine communicate to connect.
Using above-mentioned implementation, in operating normally power supply process, operator can both lead to breaker at the scene
Cross check high-tension switch cabinet control cabinet door face board on closing position monitoring red light come judge breaker sub-gate circuit whether
It is complete reliable, both can be by the warning message for the control loop template checked on live microcomputer protecting device, it can also be by checking
The warning message for the control loop template that background monitoring machine issues, without going on-the-spot make an inspection tour, so that it may learn breaker in real time
Separating brake electric loop failure quickly eliminates brake division loop of circuit breaker failure, it is ensured that breaker to adopt an effective measure in time
Safe and reliable operation.
With reference to first aspect, in a first possible implementation of that first aspect, the breaker assists normally closed contact
Closing coil is set between the cathode of the DC power supply, and the both ends of the closing coil are normal with breaker auxiliary respectively
Close the cathode electrical connection of contact and the DC power supply.
The first possible implementation with reference to first aspect, in a second possible implementation of that first aspect, institute
It states and opening coil is set between breaker auxiliary normal opened contact and the cathode of the DC power supply, the both ends point of the opening coil
The cathode of normal opened contact and the DC power supply is not assisted to be electrically connected with the breaker.
Second of possible implementation with reference to first aspect, in first aspect in the third possible implementation, institute
It states and is provided with cathode power supply connecting terminal and negative power supply connecting terminal on microcomputer protecting controller, the cathode power supply wiring
Terminal is electrically connected with the anode of the DC power supply, and the cathode of the negative power supply connecting terminal and the DC power supply is electrically connected
It connects.
The third possible implementation with reference to first aspect, in the 4th kind of possible implementation of first aspect, institute
It states and is additionally provided with the first communication interface and the second communication interface on microcomputer protecting controller, first communication interface and second
Communication interface is communicated to connect with the signal receiving end of the communication processor.
4th kind of possible implementation with reference to first aspect, in the 5th kind of possible implementation of first aspect, institute
It states and is provided with spring energy-storage normal opened contact, the bullet between tripping position relay coil and breaker auxiliary normally closed contact
Spring energy storage normal opened contact is electrically connected with the tripping position relay coil with breaker auxiliary normally closed contact respectively.
It with reference to first aspect or the first to five kind of first aspect any possible implementation, can at the 6th kind of first aspect
In the implementation of energy, dc circuit breaker is additionally provided between the DC power supply and current supply circuit, the dc circuit breaker is used
It powers in cutting off the DC power supply.
6th kind of possible implementation with reference to first aspect, in the 7th kind of possible implementation of first aspect, institute
Stating direct current power source voltage is 220V.
7th kind of possible implementation with reference to first aspect, in the 8th kind of possible implementation of first aspect, institute
Stating background monitoring machine includes combined aural and visual alarm and display screen, and the combined aural and visual alarm is for issuing alarm signal, the display screen
For showing fault message.
Detailed description of the invention
Fig. 1 is a kind of structural representation of breaker open operation electric loop fault monitoring system provided by the embodiments of the present application
Figure；
In Fig. 1, symbol is expressed as:
KM- DC power supply, QF1- breaker assist normally closed contact, and QF2- breaker assists normal opened contact, HQ- closing line
Circle, TQ- opening coil, HD- closing position monitor red light, TWJ- tripping position relay coil, TWJ2- tripping position relay
Normally closed contact, HWJ- closing operation position relay coil are assisted, HWJ1- closing operation position relay assists normal opened contact, and HWJ2- closes a floodgate
Position relay assists normally closed contact, S1- spring Chu Manneng normal opened contact, 1DK- dc circuit breaker, P1- cathode power supply terminals
Son, P2- negative power supply connecting terminal, the first communication interface of S3-, the second communication interface of S4-.
Specific embodiment
This programme is illustrated with specific embodiment with reference to the accompanying drawing.
Fig. 1 is a kind of structural representation of breaker open operation electric loop fault monitoring system provided by the embodiments of the present application
Figure, referring to Fig. 1, breaker open operation electric loop fault monitoring system, comprising: DC power supply KM, the DC power supply KM voltage
For 220V, microcomputer protecting controller, breaker auxiliary normally closed contact QF1, breaker assist normal opened contact QF2, closing position
Monitor red light HD, communication processor and background monitoring machine.
The microcomputer protecting controller include: tripping position relay coil TWJ, closing operation position relay coil HWJ,
Closing operation position relay assists normal opened contact HWJ1, closing operation position relay auxiliary normally closed contact HWJ2 and tripping position relay
Assist normally closed contact TWJ2, the tripping position relay coil TWJ, closing operation position relay coil HWJ and trip position after
One end of electric appliance auxiliary normally closed contact TWJ2 is electrically connected with the anode of the DC power supply, and the breaker assists normally closed contact
The both ends of QF1 are electrically connected with the cathode of the other end of the tripping position relay coil TWJ and the DC power supply respectively, institute
State the both ends of breaker auxiliary normal opened contact QF2 respectively with the other end of the closing operation position relay coil HWJ and described straight
The cathode in galvanic electricity source is electrically connected.
One end of the closing operation position relay auxiliary normally closed contact HWJ2 assists normally closed with the tripping position relay
The other end of contact TWJ2 is electrically connected, and the other end of the closing operation position relay auxiliary normally closed contact HWJ2 is arranged described micro-
On connecting terminal in machine protection supervisory equipment；The both ends of closing operation position relay auxiliary normal opened contact HWJ1 respectively with institute
One end of closing position monitoring red light HD and the cathode electrical connection of DC power supply are stated, the closing position monitoring red light HD's is another
It holds and is electrically connected with the anode of the DC power supply；The communication processor signal receiving end and the microcomputer protecting controller are logical
Letter connection, the communication processor signal sending end and the background monitoring machine communicate to connect.
Further, closing line is set between the breaker auxiliary normally closed contact QF1 and the cathode of the DC power supply
HQ is enclosed, the both ends of the closing coil HQ assist the cathode of normally closed contact QF1 and the DC power supply with the breaker respectively
Electrical connection.Setting opening coil TQ between the breaker auxiliary normal opened contact QF2 and the cathode of the DC power supply, described point
The both ends of brake cable circle TQ assist the cathode of normal opened contact QF2 and the DC power supply to be electrically connected with the breaker respectively.
Cathode power supply connecting terminal P1 and negative power supply connecting terminal P2, institute are provided on the microcomputer protecting controller
The anode for stating cathode power supply connecting terminal P1 and the DC power supply be electrically connected, the negative power supply connecting terminal P2 and it is described directly
The cathode in galvanic electricity source is electrically connected.
It is additionally provided with the first communication interface S3 and the second communication interface S4 on the microcomputer protecting controller, described first
Communication interface S3 and the second communication interface S4 is arranged on a communication joint, and the communication of the first communication interface S3 and second connects
Mouth S4 is communicated to connect with the signal receiving end of the communication processor.The tripping position relay coil TWJ breaks with described
Be provided with spring energy-storage normal opened contact S1 between road device auxiliary normally closed contact QF1, the spring energy-storage normal opened contact S1 respectively with
The tripping position relay coil TWJ is electrically connected with breaker auxiliary normally closed contact QF1.
Dc circuit breaker 1DK is additionally provided between the DC power supply and current supply circuit, the dc circuit breaker 1DK is used for
Cut off the DC power supply power supply.The background monitoring machine includes combined aural and visual alarm and display screen, and the combined aural and visual alarm is used for
Alarm signal is issued, the display screen is for showing fault message.
The dc circuit breaker 1DK of the monitoring system of breaker open operation electric loop failure is in breaker normal operation
Closing position.In the operation of breaker normal power supply, breaker assists normal opened contact QF2 closure, closing operation position relay coil HWJ
Electric, auxiliary normal opened contact HWJ1 closure is obtained, the closing position monitoring red light HD on the control cabinet door face board of high-tension switch cabinet is bright,
Show breaker in closing position, the sub-gate circuit of breaker is complete.Closing position monitors red light HD and closing position relay
Closing position monitoring circuit where device coil HWJ is used to monitor the integrality of brake division loop of circuit breaker, i.e., by checking high pressure
Closing position on the control cabinet door face board of switchgear monitors whether lighting for red light HD, whether to judge brake division loop of circuit breaker
Completely.In the present embodiment, so-called auxiliary normal opened contact HWJ1, refer to the coil of closing operation position relay HWJ not it is electric
When, closing operation position relay auxiliary normal opened contact HWJ1 is maintained at normally open, when the coil of closing operation position relay HWJ is obtaining
When electric, which can be then closed.
Protection supervisory equipment can detect the state of circuit-breaker switching on-off position relay automatically, and breaker is in power supply fortune of closing a floodgate
When row, when the opening coil TQ of breaker open operation electric loop, breaker normal opened contact and its certain unitary in connecting wire circuit
In the event of failure, closing position monitoring circuit is obstructed for part.Closing operation position relay coil HWJ must not be electric, assists normal opened contact
HWJ1 is not closed, and closing position on the control cabinet door face board of high-tension switch cabinet monitoring red light HD does not work, meanwhile, closing position after
Electric appliance assists normally closed contact HWJ2 to reset connection.Also, in closing position, breaker auxiliary normally closed contact QF1's answers breaker
Return disconnection, for monitoring that the coil TWJ of tripping position relay of closing circuit of circuit breaker integrality also must not be electric, auxiliary is normal
It closes contact TWJ2 and resets connection.In this way, two group relay normally closed contacts of circuit-breaker switching on-off position are connected in series, protective device
By logic judgment, that is, think that the separating brake control loop of breaker is broken, issues the alarm signal of " control loop template "
Breath, and in microcomputer protecting controller liquid crystal screen display " control loop template ".
As can be seen from the above embodiments, a kind of breaker open operation electric loop fault monitoring system is present embodiments provided, is broken
For road device in operating normally power supply process, operator can both pass through the control cabinet shop front of inspection high-tension switch cabinet at the scene
Whether the closing position monitoring red light on plate is complete reliable come the sub-gate circuit for judging breaker, can be by checking that live microcomputer is protected
Protection unit, can also be by the warning message for the control loop template that background monitoring machine is checked, without going on-the-spot make an inspection tour, so that it may in real time
It learns breaker open operation electric loop failure, to adopt an effective measure in time, quickly eliminates brake division loop of circuit breaker failure, really
The safe and reliable operation of breaker is protected.
It should be noted that, in this document, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
Certainly, above description is also not limited to the example above, technical characteristic of the application without description can by or
It is realized using the prior art, details are not described herein；The technical solution that above embodiments and attached drawing are merely to illustrate the application is not
It is the limitation to the application, Tathagata substitutes, and the application is described in detail only in conjunction with and referring to preferred embodiment, ability
Domain it is to be appreciated by one skilled in the art that those skilled in the art were made in the essential scope of the application
Variations, modifications, additions or substitutions also should belong to claims hereof protection scope without departure from the objective of the application.
Claims (9)
1. a kind of breaker open operation electric loop fault monitoring system characterized by comprising DC power supply, Microcomputer Protection are surveyed
Control device, breaker auxiliary normally closed contact, breaker auxiliary normal opened contact, closing position monitoring red light, communication processor and after
Platform monitoring equipment, in which:
The microcomputer protecting controller include: tripping position relay coil, closing operation position relay coil, closing position after
Electric appliance assists normal opened contact, closing operation position relay auxiliary normally closed contact and tripping position relay to assist normally closed contact, described
Tripping position relay coil, closing operation position relay coil and tripping position relay auxiliary normally closed contact one end with it is described
The anode electrical connection of DC power supply, the both ends of breaker auxiliary normally closed contact respectively with the tripping position relay coil
The other end and the DC power supply cathode electrical connection, the both ends of breaker auxiliary normal opened contact respectively with the combined floodgate
The electrical connection of the cathode of the other end of position relay coil and the DC power supply；
One end of the closing operation position relay auxiliary normally closed contact is another with tripping position relay auxiliary normally closed contact
The other end of one end electrical connection, the closing operation position relay auxiliary normally closed contact is arranged in the microcomputer protecting controller
Connecting terminal on；The both ends of the closing operation position relay auxiliary normal opened contact monitor red light with the closing position respectively
The electrical connection of the cathode of one end and DC power supply, the other end of the closing position monitoring red light and the anode electricity of the DC power supply
Connection；The communication processor signal receiving end and the microcomputer protecting controller communicate to connect, the communication processor letter
Number transmitting terminal and the background monitoring machine communicate to connect.
2. breaker open operation electric loop fault monitoring system according to claim 1, which is characterized in that the breaker
Closing coil is set between auxiliary normally closed contact and the cathode of the DC power supply, the both ends of the closing coil respectively with it is described
Breaker assists the electrical connection of the cathode of normally closed contact and the DC power supply.
3. breaker open operation electric loop fault monitoring system according to claim 2, which is characterized in that the breaker
Opening coil is set between auxiliary normal opened contact and the cathode of the DC power supply, the both ends of the opening coil respectively with it is described
Breaker assists the electrical connection of the cathode of normal opened contact and the DC power supply.
4. breaker open operation electric loop fault monitoring system according to claim 3, which is characterized in that the microcomputer is protected
Cathode power supply connecting terminal and negative power supply connecting terminal, the cathode power supply connecting terminal and institute are provided on shield measure and control device
The anode electrical connection of DC power supply is stated, the negative power supply connecting terminal is electrically connected with the cathode of the DC power supply.
5. breaker open operation electric loop fault monitoring system according to claim 4, which is characterized in that the microcomputer is protected
The first communication interface and the second communication interface, first communication interface and the second communication interface are additionally provided on shield measure and control device
Communicated to connect with the signal receiving end of the communication processor.
6. breaker open operation electric loop fault monitoring system according to claim 5, which is characterized in that the tripping position
It sets and is provided with spring energy-storage normal opened contact between relay coil and breaker auxiliary normally closed contact, the spring energy-storage is normal
Contact is opened to be electrically connected with the tripping position relay coil with breaker auxiliary normally closed contact respectively.
7. breaker open operation electric loop fault monitoring system according to claim 1-6, which is characterized in that institute
It states and is additionally provided with dc circuit breaker between DC power supply and current supply circuit, the dc circuit breaker is for cutting off the DC power supply
Power supply.
8. breaker open operation electric loop fault monitoring system according to claim 7, which is characterized in that the direct current
Source voltage is 220V.
9. breaker open operation electric loop fault monitoring system according to claim 8, which is characterized in that the backstage prison
Control machine includes combined aural and visual alarm and display screen, and the combined aural and visual alarm is for issuing alarm signal, and the display screen is for showing
Fault message.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910241533.1A CN109870647A (en) | 2019-03-28 | 2019-03-28 | A kind of monitoring system of breaker open operation electric loop failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910241533.1A CN109870647A (en) | 2019-03-28 | 2019-03-28 | A kind of monitoring system of breaker open operation electric loop failure |
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| CN109870647A true CN109870647A (en) | 2019-06-11 |
Family
ID=66921391
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|---|---|---|---|
| CN201910241533.1A Pending CN109870647A (en) | 2019-03-28 | 2019-03-28 | A kind of monitoring system of breaker open operation electric loop failure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514961A (en) * | 2019-08-27 | 2019-11-29 | 宁波天安（集团）股份有限公司 | Ring network cabinet fault monitoring control device |
| CN110988665A (en) * | 2019-12-01 | 2020-04-10 | 国网辽宁省电力有限公司锦州供电公司 | Abnormal alarm method for closing function of spring type circuit breaker |
| CN112433147A (en) * | 2020-10-30 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | High-voltage circuit breaker control circuit fault self-diagnosis device |
| CN113777531A (en) * | 2021-09-10 | 2021-12-10 | 国网江苏省电力有限公司徐州供电分公司 | Substation operation loop monitoring and fault analysis method |
| CN114217218A (en) * | 2021-12-15 | 2022-03-22 | 宿迁阳光送变电工程有限公司 | Circuit breaker switch tripping and operation loop real-time monitoring device |
| CN118244682A (en) * | 2024-05-24 | 2024-06-25 | 山东浪潮智慧建筑科技有限公司 | Intelligent monitoring system and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005065424A (en) * | 2003-08-14 | 2005-03-10 | Tm T & D Kk | Automatic monitoring circuit for protective relay system |
| CN105305620A (en) * | 2015-10-22 | 2016-02-03 | 山东钢铁股份有限公司 | Disconnection monitoring system of breaker closing control circuit |
| CN107290658A (en) * | 2017-07-13 | 2017-10-24 | 国网浙江省电力公司绍兴供电公司 | A kind of Anti-jump Circuit of Breaker method of testing |
| CN108631439A (en) * | 2018-04-26 | 2018-10-09 | 山东钢铁股份有限公司 | Breaker remote breaking-closing operating trouble shoot method |
| CN209946326U (en) * | 2019-03-28 | 2020-01-14 | 山东钢铁股份有限公司 | Breaker opening electric loop fault monitoring system |
-
2019
- 2019-03-28 CN CN201910241533.1A patent/CN109870647A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005065424A (en) * | 2003-08-14 | 2005-03-10 | Tm T & D Kk | Automatic monitoring circuit for protective relay system |
| CN105305620A (en) * | 2015-10-22 | 2016-02-03 | 山东钢铁股份有限公司 | Disconnection monitoring system of breaker closing control circuit |
| CN107290658A (en) * | 2017-07-13 | 2017-10-24 | 国网浙江省电力公司绍兴供电公司 | A kind of Anti-jump Circuit of Breaker method of testing |
| CN108631439A (en) * | 2018-04-26 | 2018-10-09 | 山东钢铁股份有限公司 | Breaker remote breaking-closing operating trouble shoot method |
| CN209946326U (en) * | 2019-03-28 | 2020-01-14 | 山东钢铁股份有限公司 | Breaker opening electric loop fault monitoring system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514961A (en) * | 2019-08-27 | 2019-11-29 | 宁波天安（集团）股份有限公司 | Ring network cabinet fault monitoring control device |
| CN110514961B (en) * | 2019-08-27 | 2023-12-08 | 宁波天安（集团）股份有限公司 | Ring main unit fault monitoring control device |
| CN110988665A (en) * | 2019-12-01 | 2020-04-10 | 国网辽宁省电力有限公司锦州供电公司 | Abnormal alarm method for closing function of spring type circuit breaker |
| CN112433147A (en) * | 2020-10-30 | 2021-03-02 | 国网山东省电力公司聊城供电公司 | High-voltage circuit breaker control circuit fault self-diagnosis device |
| CN113777531A (en) * | 2021-09-10 | 2021-12-10 | 国网江苏省电力有限公司徐州供电分公司 | Substation operation loop monitoring and fault analysis method |
| CN113777531B (en) * | 2021-09-10 | 2024-06-07 | 国网江苏省电力有限公司徐州供电分公司 | Substation operation loop monitoring and fault analysis method |
| CN114217218A (en) * | 2021-12-15 | 2022-03-22 | 宿迁阳光送变电工程有限公司 | Circuit breaker switch tripping and operation loop real-time monitoring device |
| CN114217218B (en) * | 2021-12-15 | 2024-02-13 | 宿迁阳光送变电工程有限公司 | Real-time monitoring device for switch stealing and tripping and operation loop of circuit breaker |
| CN118244682A (en) * | 2024-05-24 | 2024-06-25 | 山东浪潮智慧建筑科技有限公司 | Intelligent monitoring system and method |
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