CN102361352B - Change-over switch integration circuit for circuit breaker of intelligent converting station - Google Patents
Change-over switch integration circuit for circuit breaker of intelligent converting station Download PDFInfo
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- CN102361352B CN102361352B CN2011103260045A CN201110326004A CN102361352B CN 102361352 B CN102361352 B CN 102361352B CN 2011103260045 A CN2011103260045 A CN 2011103260045A CN 201110326004 A CN201110326004 A CN 201110326004A CN 102361352 B CN102361352 B CN 102361352B
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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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Abstract
The invention discloses a change-over switch integration circuit for a circuit breaker of an intelligent converting station. The change-over switch integration circuit comprises a change-over switch which is connected with the input end of an intelligent terminal, wherein the intelligent terminal is connected with a circuit breaker in a primary mechanism through a logic judgment contact; the circuit breaker comprises a closing coil; the closing coil of the circuit breaker is connected with a closing control loop of a monitoring background I; the closing control loop of the monitoring background I comprises a closing logic judgment contact of the intelligent terminal under the control of the monitoring background; and a closing logic judgment contact of the intelligent terminal under the control of a monitoring background II is connected in parallel to the monitoring background I. The invention has the beneficial effects: the intelligent mechanism is integrated with the change-over switch of the circuit breaker of the primary mechanism, redundant functional devices are eliminated, multiple sets of monitoring backgrounds correspond to mechanism closing at the future development stage of the intelligent converting station simultaneously, and the change-over switch integration circuit has long-term development trend and extensive application space.
Description
Technical field
The present invention relates to a kind of change-over switch integration line, relate in particular to a kind of change-over switch integration circuit for circuit breaker of intelligent converting station.
Background technology
In intelligent substation, deciliter control loop for circuit breaker, be respectively equipped with two cover distant places/on the spot, close a floodgate/the tripping operation change over switch, the change over switch that the traditional secondary measure and control device that one cover keeps for relay bungalow is derived and, it is by being connected with intelligent terminal, utilize the logic of intelligent terminal to judge that contact carries out deciliter control to circuit breaker, i.e. relay bungalow " distant place " change over switch of conventional substation definition; Another set of for directly acting on the change over switch of circuit breaker in the power distribution equipment district convergence control cabinet, i.e. power distribution equipment district " on the spot " change over switch of conventional substation definition.Current situation about facing is:
1, along with technical development, intelligent terminal is transferred by relay bungalow and is arranged in the power distribution equipment district, and one on it a cover distant place/on the spot, close a floodgate/tripping operation change over switch has lost relay bungalow " distant place " operation effect, only had " on the spot " operating function.Namely form in theory, at the same area, with the change over switch that directly acts on circuit breaker in the convergence control cabinet, the power distribution equipment district that is the conventional substation definition carries out deciliter control with series model to circuit breaker with " on the spot " change over switch, the situation that formation functional redundancy, hardware device repeat to arrange is run counter to the integrated guideline of intelligent substation; And operation, maintainer be when power distribution equipment district Work in Place, needs strictly in order, repetitive operation two cover change over switches, and complex procedures causes the operating accident incidence to improve.
2, in the current intelligent substation, circuit breaker in mechanism only is provided with one group of closing coil, and one group of closing coil needs a corresponding cover monitoring backstage, when the monitoring backstage more than when cover, existing circuit breaker deciliter control loop just can't realize that the circuit breaker that will overlap the monitoring backstage more and only contain one group of closing coil mates to satisfy the situation of design requirement.
Summary of the invention
Purpose of the present invention is exactly in order to address the above problem, and a kind of change-over switch integration circuit for circuit breaker of intelligent converting station is provided, and it has practical, and convenient economical, development prospect is advantage widely.
To achieve these goals, the present invention adopts following technical scheme:
A kind of change-over switch integration circuit for circuit breaker of intelligent converting station, it comprises monitoring backstage, change over switch electric loop, intelligent terminal, described intelligent terminal judges by logic that contact and circuit breaker in mechanism have and is connected that described circuit breaker is provided with a cover closing coil, and two overlap switching windings; Described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop, monitoring backstage II separating brake control loop II; Described breaker closing coil is connected with monitoring backstage I combined floodgate control loop, the combined floodgate logic that comprises the intelligent terminal under this monitoring Background control in the I combined floodgate control loop of described monitoring backstage is judged contact I, described change over switch electric loop is connected with the intelligent terminal input, the monitoring backstage I combined floodgate control loop that the described combined floodgate logic that comprises intelligent terminal is judged contact I is with to belong to monitoring backstage II combined floodgate control loop II in parallel, and described combined floodgate control loop II is connected in parallel on combined floodgate logic judgement contact I two ends or is connected in parallel on the combined floodgate control loop of the monitoring backstage I that comprises combined floodgate logic judgement contact I.
Described change over switch electric loop comprises one group of distant place/on the spot, closes a floodgate/the tripping operation change over switch, this group distant place/on the spot, close a floodgate/the tripping operation change over switch comprises the on the spot switch that contact one end is connected with power circuit, the other end of a contact of switch is connected with the parallel circuits of hand TRIP contact and pressure hand combination switch contact and is branch road I on the spot, and branch road I is connected with intelligent terminal; Comprise that also another contact of switch and same period hand closes the branch road II of contact series connection on the spot, described branch road II is connected with intelligent terminal; Also comprise the distant place switch that an end is connected with power circuit, the other end of a contact of distant place switch is connected with distant parallel circuits one end that closes contact, distant jumping contact; The distant contact of closing that is arranged in parallel circuits is connected on the line branch road of forcing hand combination switch contact and intelligent terminal, and the distant jumping contact that is arranged in parallel circuits is connected on the line branch road of hand TRIP contact and intelligent terminal.
Also be provided with the closing relay coil in the I combined floodgate control loop of described monitoring backstage, the combined floodgate logic of the intelligent terminal under described closing relay coil and this monitoring Background control is judged the contact series connection and is connected with circuit breaker input in mechanism.
The separating brake logic judgement contact that comprises respectively the intelligent terminal under this monitoring Background control among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II.
Be respectively equipped with the separating brake relay coil among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II; The separating brake logic of the intelligent terminal under described separating brake relay coil and this monitoring Background control judges that contact connects.
A kind of change-over switch integration circuit for circuit breaker of intelligent converting station in addition, it comprises the monitoring backstage, the change over switch electric loop, intelligent terminal, described intelligent terminal is judged by logic that contact and circuit breaker in mechanism have and is connected, described circuit breaker is provided with two closing coils, two closing coils of described circuit breaker independently of one another and respectively with monitoring backstage I combined floodgate control loop, monitoring backstage II combined floodgate control loop A connects described monitoring backstage I combined floodgate control loop, the combined floodgate logic that comprises respectively the intelligent terminal under this monitoring Background control among the combined floodgate control loop A of monitoring backstage II is judged contact.Described monitoring backstage I combined floodgate control loop, monitoring also are respectively equipped with the closing relay coil among the II combined floodgate control loop A of backstage, and the combined floodgate logic judgement contact of the intelligent terminal under described closing relay coil and this monitoring Background control is connected.Circuit breaker in the described mechanism is provided with two cover switching windings, and described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop, monitoring backstage II separating brake control loop II.The separating brake logic that is respectively equipped with the intelligent terminal under separating brake relay coil and this monitoring Background control among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II is judged contact; The separating brake logic of the intelligent terminal under described separating brake relay coil and this monitoring Background control judges that contact connects.
In the above-mentioned two situations, described monitoring backstage II is at least one.
Beneficial effect of the present invention:
(1) intelligent terminal and mechanism's circuit breaker change-over switch integration, cancel the redundancy feature device, reduced device configuration quantity, save screen cabinet arrangement space, improve degree of integration, advanced the fully fusion design of intelligent terminal and a mechanism, the intelligentized primary equipment of realizing the intelligent substation final goal has been provided actual solution.
(2) the integrated employing intelligent terminal of change over switch function realizes that classical circuit board loop design has guaranteed that security of system is reliable.
(3) the disposable design of opening into intelligent terminal of change over switch action utilizes the GOOSE network to share the change over switch state, has the equipment of demand all can call for the change over switch state, namely save the change over switch contact, again Guarantee Status in time, comprehensively shared.
(4) brand-new loop design can be flexible, solve reliably two covers monitoring backstage of recent stage of intelligent substation or many cover monitoring backstage, the unmatched problem of the one cover He Quan of mechanism (closing coil), many cover monitoring backstage is through overall arrangement, utilize the logic of the intelligent terminal under this monitoring Background control to judge that the contact implementation is to the control of the circuit breaker in the same mechanism, through convenient, simple reconfiguration design, can satisfy simultaneously intelligent substation developing stage at a specified future date and overlap the monitoring backstage more, close situation corresponding to circle with mechanism, long term growth trend and extensive use space are arranged in the intelligent substation design field.
Description of drawings
Figure 1A: change over switch and intelligent terminal elementary diagram;
Figure 1B: another set of change over switch and intelligent terminal elementary diagram;
Fig. 1 C: monitoring backstage I combined floodgate control loop is connected fundamental diagram with monitoring backstage II combined floodgate control loop with mechanism's circuit breaker;
Fig. 2: two cover monitoring backstage, a cover He Quan of mechanism do not mate the solution schematic diagram;
Fig. 3: circle solution schematic diagram closes in two covers monitoring backstage, two cover mechanism.
Wherein, 1. intelligent terminal, 2. circuit breaker, 3. monitoring backstage I combined floodgate control loop is 4. monitored backstage II combined floodgate control loop II, 5. change over switch electric loop, 6. hand combination switch contact is 7. forced in hand TRIP contact, and 8. the same period, hand closed the contact, 9. switch on the spot, 10. distant place switch, the 11. distant contacts of closing, 12. distant jumping contact, 13. combined floodgate logics are judged contact I, 14. monitoring backstage II combined floodgate control loop A, 15. monitoring backstage I separating brake control loop, 16. monitoring backstage II separating brake control loop II.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment.
Figure 1A, Figure 1B are the change over switch that intelligent substation terminal 1 input connects, and are that Redundancy Design is considered, comprise a distant place/on the spot, close a floodgate/tripping operation change over switch two cover contacts, by independent monitoring backstage it are controlled respectively.Described change over switch electric loop 5 comprises one group of distant place/on the spot, closes a floodgate/the tripping operation change over switch, this group distant place/on the spot, close a floodgate/the tripping operation change over switch comprises the on the spot switch 9 that contact one end is connected with power circuit, the other end of 9 one contacts of switch is connected with the parallel circuits of hand TRIP contact 6 and pressure hand combination switch contact 7 and is branch road I on the spot, and branch road I is connected with intelligent terminal 1; Comprise that also switch 9 another contacts and same period hand closes the branch road II of contact 8 series connection on the spot, described branch road II is connected with intelligent terminal 1; Also comprise the distant place switch 10 that an end is connected with power circuit, the other end of 10 1 contacts of distant place switch is connected with distant parallel circuits one end that closes contact 11, distant jumping contact 12; The distant contact 11 of closing that is arranged in parallel circuits is connected on the line branch road of forcing hand combination switch contact 7 and intelligent terminal 1, and the distant jumping contact 12 that is arranged in parallel circuits is connected on the line branch road of hand TRIP contact 6 and intelligent terminal 1.
Fig. 1 C monitoring backstage I combined floodgate control loop is connected fundamental diagram with monitoring backstage II combined floodgate control loop with mechanism's circuit breaker, shown in the figure: face two covers and monitor backstage, and overlap mechanism and close and enclose unmatched situation schematic diagram; The closing coil of the circuit breaker 2 among the figure in mechanism only has one.
Among Fig. 2, a kind of change-over switch integration circuit for circuit breaker of intelligent converting station, it comprises monitoring backstage, change over switch electric loop, intelligent terminal, described intelligent terminal is judged by logic that contact and circuit breaker in mechanism have and is connected, described circuit breaker is provided with a cover closing coil, two cover switching windings; Described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop, monitoring backstage II separating brake control loop II; Described breaker closing coil is connected with monitoring backstage I combined floodgate control loop, the combined floodgate logic that comprises the intelligent terminal under this monitoring Background control in the I combined floodgate control loop of described monitoring backstage is judged contact I, described change over switch electric loop is connected with the intelligent terminal input, the monitoring backstage I combined floodgate control loop that the described combined floodgate logic that comprises intelligent terminal is judged contact I is with to belong to monitoring backstage II combined floodgate control loop II in parallel, and described combined floodgate control loop II is connected in parallel on combined floodgate logic judgement contact I two ends or is connected in parallel on the combined floodgate control loop of the monitoring backstage I that comprises combined floodgate logic judgement contact I.Described monitoring backstage II is 1.
Described change over switch electric loop comprises one group of distant place/on the spot, closes a floodgate/the tripping operation change over switch, this group distant place/on the spot, close a floodgate/the tripping operation change over switch comprises the on the spot switch that contact one end is connected with power circuit, the other end of a contact of switch is connected with the parallel circuits of hand TRIP contact and pressure hand combination switch contact and is branch road I on the spot, and branch road I is connected with intelligent terminal; Comprise that also another contact of switch and same period hand closes the branch road II of contact series connection on the spot, described branch road II is connected with intelligent terminal; Also comprise the distant place switch that an end is connected with power circuit, the other end of a contact of distant place switch is connected with distant parallel circuits one end that closes contact, distant jumping contact; The distant contact of closing that is arranged in parallel circuits is connected on the line branch road of forcing hand combination switch contact and intelligent terminal, and the distant jumping contact that is arranged in parallel circuits is connected on the line branch road of hand TRIP contact and intelligent terminal.
Also be provided with the closing relay coil in the I combined floodgate control loop of described monitoring backstage, the combined floodgate logic of the intelligent terminal under described closing relay coil and this monitoring Background control is judged the contact series connection and is connected with circuit breaker input in mechanism.
The separating brake logic judgement contact that comprises respectively the intelligent terminal under this monitoring Background control among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II.
Be respectively equipped with the separating brake relay coil among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II; The separating brake logic of the intelligent terminal under described separating brake relay coil and this monitoring Background control judges that contact connects.
Represent among Fig. 3: another change-over switch integration circuit for circuit breaker of intelligent converting station, it comprises the monitoring backstage, change over switch electric loop 5, intelligent terminal 1, described intelligent terminal 1 is judged by logic that contact and circuit breaker 2 in mechanism have and is connected, described circuit breaker 2 is provided with two closing coils, two closing coils of described circuit breaker independently of one another and respectively with monitoring backstage I combined floodgate control loop 3, monitoring backstage II combined floodgate control loop A14 connects described monitoring backstage I combined floodgate control loop 3, the combined floodgate logic that comprises respectively the intelligent terminal under this monitoring Background control among the combined floodgate control loop A14 of monitoring backstage II is judged contact 13.Same described monitoring backstage II is 1.
Described monitoring backstage I combined floodgate control loop 3, monitoring also are respectively equipped with the closing relay coil among the backstage II combined floodgate control loop A 14, and the combined floodgate logic judgement contact 13 of the intelligent terminal 1 under described closing relay coil and this monitoring Background control is connected.
Circuit breaker in the described mechanism is provided with two cover switching windings, and described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop 15, monitoring backstage II separating brake control loop II16.
The separating brake logic that is respectively equipped with the intelligent terminal 1 under separating brake relay coil and this monitoring Background control among described monitoring backstage I separating brake control loop 15, the monitoring backstage II separating brake control loop II16 is judged contact; The separating brake logic of the intelligent terminal 1 under described separating brake relay coil and this monitoring Background control judges that contact connects.
Although above-mentionedly by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (9)
1. change-over switch integration circuit for circuit breaker of intelligent converting station, it comprises monitoring backstage, change over switch electric loop, intelligent terminal, described intelligent terminal is judged by logic that contact and circuit breaker in mechanism have and is connected, described circuit breaker is provided with a cover closing coil, two cover switching windings; Described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop, monitoring backstage II separating brake control loop II; Described breaker closing coil is connected with monitoring backstage I combined floodgate control loop, the combined floodgate logic that comprises the intelligent terminal under this monitoring Background control in the I combined floodgate control loop of described monitoring backstage is judged contact I, it is characterized in that, described change over switch electric loop is connected with the intelligent terminal input, the described combined floodgate logic that comprises intelligent terminal is judged the combined floodgate control loop of monitoring backstage I of contact I with to belong to the combined floodgate control loop II that monitor backstage II in parallel, and described combined floodgate control loop II is connected in parallel on combined floodgate logic judgement contact I two ends or is connected in parallel on the combined floodgate control loop of the monitoring backstage I that comprises combined floodgate logic judgement contact I; Described change over switch electric loop comprises one group of distant place/on the spot, closes a floodgate/the tripping operation change over switch, this group distant place/on the spot, close a floodgate/the tripping operation change over switch comprises the on the spot switch that contact one end is connected with power circuit, the other end of a contact of switch is connected with the parallel circuits of hand TRIP contact and pressure hand combination switch contact and is branch road I on the spot, and branch road I is connected with intelligent terminal; Comprise that also another contact of switch and same period hand closes the branch road II of contact series connection on the spot, described branch road II is connected with intelligent terminal; Also comprise the distant place switch that an end is connected with power circuit, the other end of a contact of distant place switch is connected with distant parallel circuits one end that closes contact, distant jumping contact; The distant contact of closing that is arranged in parallel circuits is connected on the line branch road of forcing hand combination switch contact and intelligent terminal, and the distant jumping contact that is arranged in parallel circuits is connected on the line branch road of hand TRIP contact and intelligent terminal.
2. a kind of change-over switch integration circuit for circuit breaker of intelligent converting station as claimed in claim 1, it is characterized in that, also be provided with the closing relay coil in the I combined floodgate control loop of described monitoring backstage, the combined floodgate logic of the intelligent terminal under described closing relay coil and this monitoring Background control is judged contact I series connection and is connected with circuit breaker input in mechanism.
3. a kind of change-over switch integration circuit for circuit breaker of intelligent converting station as claimed in claim 1, it is characterized in that, comprise respectively the separating brake logic judgement contact of the intelligent terminal under this monitoring Background control among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II.
4. such as claim 1 or 3 described a kind of change-over switch integration circuit for circuit breaker of intelligent converting stations, it is characterized in that, be respectively equipped with the separating brake relay coil among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II; The separating brake logic of the intelligent terminal under described separating brake relay coil and this monitoring Background control judges that contact connects.
5. change-over switch integration circuit for circuit breaker of intelligent converting station, it comprises the monitoring backstage, the change over switch electric loop, intelligent terminal, described intelligent terminal is judged by logic that contact and circuit breaker in mechanism have and is connected, it is characterized in that, described circuit breaker is provided with two closing coils, two closing coils of described circuit breaker independently of one another and respectively with monitoring backstage I combined floodgate control loop, monitoring backstage II combined floodgate control loop A connects described monitoring backstage I combined floodgate control loop, the combined floodgate logic that comprises respectively the intelligent terminal under this monitoring Background control among the combined floodgate control loop A of monitoring backstage II is judged contact; Described change over switch electric loop comprises one group of distant place/on the spot, closes a floodgate/the tripping operation change over switch, this group distant place/on the spot, close a floodgate/the tripping operation change over switch comprises the on the spot switch that contact one end is connected with power circuit, the other end of a contact of switch is connected with the parallel circuits of hand TRIP contact and pressure hand combination switch contact and is branch road I on the spot, and branch road I is connected with intelligent terminal; Comprise that also another contact of switch and same period hand closes the branch road II of contact series connection on the spot, described branch road II is connected with intelligent terminal; Also comprise the distant place switch that an end is connected with power circuit, the other end of a contact of distant place switch is connected with distant parallel circuits one end that closes contact, distant jumping contact; The distant contact of closing that is arranged in parallel circuits is connected on the line branch road of forcing hand combination switch contact and intelligent terminal, and the distant jumping contact that is arranged in parallel circuits is connected on the line branch road of hand TRIP contact and intelligent terminal.
6. a kind of change-over switch integration circuit for circuit breaker of intelligent converting station as claimed in claim 5, it is characterized in that, described monitoring backstage I combined floodgate control loop, monitoring also are respectively equipped with the closing relay coil among the II combined floodgate control loop A of backstage, and the combined floodgate logic judgement contact of the intelligent terminal under described closing relay coil and this monitoring Background control is connected.
7. a kind of change-over switch integration circuit for circuit breaker of intelligent converting station as claimed in claim 5, it is characterized in that, circuit breaker in the described mechanism is provided with two cover switching windings, and described two cover switching windings are independent respectively to be connected with monitoring backstage I separating brake control loop, monitoring backstage II separating brake control loop II.
8. a kind of change-over switch integration circuit for circuit breaker of intelligent converting station as claimed in claim 7, it is characterized in that the separating brake logic that is respectively equipped with the intelligent terminal under separating brake relay coil and this monitoring Background control among described monitoring backstage I separating brake control loop, the monitoring backstage II separating brake control loop II is judged contact; The separating brake logic of the intelligent terminal under described separating brake relay coil and this monitoring Background control judges that contact connects.
9. such as claim 1 or 5 described a kind of change-over switch integration circuit for circuit breaker of intelligent converting stations, it is characterized in that described monitoring backstage II is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103260045A CN102361352B (en) | 2011-10-24 | 2011-10-24 | Change-over switch integration circuit for circuit breaker of intelligent converting station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103260045A CN102361352B (en) | 2011-10-24 | 2011-10-24 | Change-over switch integration circuit for circuit breaker of intelligent converting station |
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| CN102361352A CN102361352A (en) | 2012-02-22 |
| CN102361352B true CN102361352B (en) | 2013-10-30 |
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| CN103376758B (en) * | 2013-07-15 | 2015-09-02 | 福开尔（西安）电气有限公司 | A kind of latching relay that adopts realizes two main disconnected automatic alternate run circuit |
| CN113872330B (en) * | 2021-11-05 | 2023-03-14 | 国网宁夏电力有限公司建设分公司 | Double-set intelligent terminal starting control loop of transformer substation circuit breaker |
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| AU2003216397A1 (en) * | 2002-02-25 | 2003-09-09 | General Electric Company | Electrical protection system for reliability improvement based on sensitivity analysis |
| CN101867227B (en) * | 2010-07-01 | 2012-01-04 | 唐山盾石电气有限责任公司 | Method and device for electrically controlling high voltage circuit breaker to switch on or switch off |
| CN201877814U (en) * | 2010-12-15 | 2011-06-22 | 中国神华能源股份有限公司 | Controller for circuit breaker |
| CN202333981U (en) * | 2011-10-24 | 2012-07-11 | 山东电力工程咨询院有限公司 | Change-over switch integration line for circuit breaker of intelligent transformer substation |
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