CN104242266A - Circuit design preventing false action and used for three-phase body inconsistent protection - Google Patents
Circuit design preventing false action and used for three-phase body inconsistent protection Download PDFInfo
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- CN104242266A CN104242266A CN201410441445.3A CN201410441445A CN104242266A CN 104242266 A CN104242266 A CN 104242266A CN 201410441445 A CN201410441445 A CN 201410441445A CN 104242266 A CN104242266 A CN 104242266A
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Abstract
The invention discloses circuit design preventing false action and used for three-phase body inconsistent protection. A first starting loop, a second starting loop and an outlet loop are involved in the circuit design. The first starting loop and the second starting loop are connected between the positive electrode and the negative electrode of a power supply and respectively comprise a switching-off normally closed contact group, a switching-on normally open contact group, a time relay, an outlet intermediate relay and a time relay normally open contact, the switching-off normally closed contact groups, the switching-on normally open contact groups and the time relays are sequentially connected in series, and the outlet intermediate relays are connected with the time relay normally open contacts in series and then connected with the time relays in parallel; the outlet loop is connected between the positive electrode and the negative electrode of the power supply and comprises six normally open contacts of the outlet intermediate relay of the first starting loop, six normally open contacts of the outlet intermediate relay of the second starting loop and six circuit breaker tripping coils, every two normally open contacts are connected with one corresponding circuit breaker tripping coil in series and the normally open contacts are connected in parallel. The two starting loops are respectively connected with one time relay, each time relay is used for starting one outlet intermediate relay, contacts of the two intermediate relays are connected in series, only when the two intermediate relays act, can the loops be switched on, and false action of switches is prevented.
Description
Technical field
The present invention relates to breaker technical field, particularly relate to a kind of circuit design of body three phases un identical protection of faulty action preventing.
Background technology
The circuit breaker adopting phase-splitting to operate in the electrical network of 220KV and above, for various reasons, there will be the situation of breaker body unbalanced three-phase lines in operation, can have a negative impact to system like this, image system normally works.In order to solve the problem, adopt breaker body three phases un identical protection, avoiding the harm that breaker body unbalanced three-phase lines produces system.
Traditional breaker body three phases un identical protection, employing one group of circuit breaker contact point combination as shown in Figure 1 and the loop design of the single time relay and starting tripping as shown in Figure 2, the normal opened contact ZJ1-1 owing to exporting intermediate relay ZJ 1 is repeatedly there is in traditional design in practice, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6 insulation reduces or is subject to the factors such as external agency's vibrations, the normal opened contact loop making it export intermediate relay ZJ 1 when time relay sj 1 is not activated is connected, occur that outlet auxiliary relay fault causes the situation of switch mis-jumping.
Summary of the invention
Based on above-mentioned situation, the present invention proposes a kind of circuit design of body three phases un identical protection of faulty action preventing, greatly improve circuit reliability, ensure that system safety, there is very high using value.
To achieve these goals, the embodiment of technical solution of the present invention is:
A circuit design for the body three phases un identical protection of faulty action preventing, comprises starting-up later time one, starting-up later time two and outlet loop;
Described starting-up later time one is connected between power positive cathode, comprise the normal opened contact SJ1-1 of separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1, outlet intermediate relay ZJ 1 and described time relay sj 1, described separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1 are connected successively, and described outlet intermediate relay ZJ 1 is in parallel with described time relay sj 1 after connecting with the normal opened contact SJ1-1 of described time relay sj 1, described starting-up later time two is connected between power positive cathode, comprise the normal opened contact SJ2-1 of separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2, outlet intermediate relay ZJ 2 and described time relay sj 2, described separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2 are connected successively, and described outlet intermediate relay ZJ 2 is in parallel with described time relay sj 2 after connecting with the normal opened contact SJ2-1 of described time relay sj 2, described outlet loop is connected between power positive cathode, comprise 6 normal opened contact ZJ1-1 of described outlet intermediate relay ZJ 1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6, 6 normal opened contact ZJ2-1 of described outlet intermediate relay ZJ 2, ZJ2-2, ZJ2-3, ZJ2-4, ZJ2-5, ZJ2-6 and 6 circuit breaker trip coil, described normal opened contact ZJ1-1, ZJ2-1 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-2, ZJ2-2 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-3, ZJ2-3 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-4, ZJ2-4 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-5, ZJ2-5 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-6, ZJ2-6 is in parallel one by one again with after 1 circuit breaker trip coils connected in series,
Described separating brake normally-closed contact group one and described separating brake normally-closed contact group two are formed in parallel by three-phase separating brake normally-closed contact respectively, and described combined floodgate normally opened contact group one and described combined floodgate normally opened contact group two are formed in parallel by three-phase combined floodgate normally opened contact respectively.
Compared with prior art, beneficial effect of the present invention is: the circuit design of the body three phases un identical protection of faulty action preventing of the present invention, and the every of three-phase breaker all gets normally opened contact, normally-closed contact mutually; Parallel three phase is carried out respectively after the normally-open normally-close contact series of every phase; A time relay is connected separately again after composition two cover starting-up later time; The time relay starts an outlet auxiliary relay respectively; Two outlet auxiliary relay contact series connection, after only having two equal actions of outlet auxiliary relay, outlet loop could be connected; traditional non-uniform protection is prevented to occur the situation of malfunction; greatly improve circuit reliability, ensure that system safety, there is very high using value.
Accompanying drawing explanation
Fig. 1 is the circuit topology figure of existing one group of circuit breaker contact point combination and the single time relay;
Fig. 2 is the loop design circuit topology figure of existing starting tripping;
Fig. 3 is the circuit topology figure of the starting-up later time one of the circuit design of the body three phases un identical protection of faulty action preventing in an embodiment;
Fig. 4 is the circuit topology figure of the starting-up later time two of the circuit design of the body three phases un identical protection of faulty action preventing in an embodiment;
Fig. 5 is the circuit topology figure of the outlet loop of the circuit design of the body three phases un identical protection of faulty action preventing in an embodiment;
Fig. 6 is the circuit topology figure of the transmitting circuit of the circuit design of the body three phases un identical protection of faulty action preventing in an embodiment.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein only in order to explain the present invention, do not limit protection scope of the present invention.
The circuit design of the body three phases un identical protection of faulty action preventing in an embodiment, comprises starting-up later time one, starting-up later time two and outlet loop;
Described starting-up later time one as shown in Figure 3, be connected between power positive cathode, comprise the normal opened contact SJ1-1 of separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1, outlet intermediate relay ZJ 1 and described time relay sj 1, described separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1 are connected successively, and described outlet intermediate relay ZJ 1 is in parallel with described time relay sj 1 after connecting with the normal opened contact SJ1-1 of described time relay sj 1, described starting-up later time two as shown in Figure 4, be connected between power positive cathode, comprise the normal opened contact SJ2-1 of separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2, outlet intermediate relay ZJ 2 and described time relay sj 2, described separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2 are connected successively, and described outlet intermediate relay ZJ 2 is in parallel with described time relay sj 2 after connecting with the normal opened contact SJ2-1 of described time relay sj 2, described outlet loop as shown in Figure 5, be connected between power positive cathode, comprise 6 normal opened contact ZJ1-1 of described outlet intermediate relay ZJ 1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6, 6 normal opened contact ZJ2-1 of described outlet intermediate relay ZJ 2, ZJ2-2, ZJ2-3, ZJ2-4, ZJ2-5, ZJ2-6 and 6 circuit breaker trip coil, described normal opened contact ZJ1-1, ZJ2-1 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-2, ZJ2-2 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-3, ZJ2-3 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-4, ZJ2-4 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-5, ZJ2-5 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-6, ZJ2-6 is in parallel one by one again with after 1 circuit breaker trip coils connected in series,
Described separating brake normally-closed contact group one and described separating brake normally-closed contact group two are formed in parallel by three-phase separating brake normally-closed contact respectively, described combined floodgate normally opened contact group one and described combined floodgate normally opened contact group two are formed in parallel by three-phase combined floodgate normally opened contact respectively, namely described separating brake normally-closed contact group one is by three-phase separating brake normally-closed contact DL1, DL2, DL3 is formed in parallel, described separating brake normally-closed contact group two is by three-phase separating brake normally-closed contact DL4, DL5, DL6 is formed in parallel, described combined floodgate normally opened contact group one is by three-phase combined floodgate normally opened contact DL7, DL8, DL9 is formed in parallel, described combined floodgate normally opened contact group two is by three-phase combined floodgate normally opened contact DL10, DL11, DL12 is formed in parallel.
Known from the above description, the circuit design of the body three phases un identical protection of faulty action preventing of the present invention, the every of three-phase breaker all gets normally opened contact, normally-closed contact mutually; Parallel three phase is carried out respectively after the normally-open normally-close contact series of every phase; A time relay is connected separately again after composition two cover starting-up later time; The time relay starts an outlet auxiliary relay respectively; Two outlet auxiliary relay contact series connection; If it is not corresponding that circuit breaker position occurs; then two cover starting-up later time start non-uniform protection time relay sj 1, SJ2; the time relay contact SJ1-1, SJ2-1 restart outlet intermediate relay ZJ 1, ZJ2; after only having two equal actions of outlet auxiliary relay; outlet loop could be connected; thus the situation of misoperation when preventing any outlet auxiliary relay fault, be applicable to practical application.
As an embodiment, also comprise transmitting circuit, as shown in Figure 6, described transmitting circuit comprises the normal opened contact ZJ1-7 of the outlet intermediate relay ZJ 1 be arranged in parallel and the normal opened contact ZJ2-7 of outlet intermediate relay ZJ 2;
Because normally closed auxiliary contact is not in place or loose contact and not conducting in traditional design, non-uniform protection is caused to be failure to actuate, as shown in Figure 1, after normal circuit breaker A phase separating brake, DL7 is by closing out, the now combined floodgate normally opened contact DL8 of another two-phase, DL9 is conducting, the separating brake normally-closed contact DL1 conducting of A phase is needed to carry out relay SJ1 start-up time, but because separating brake normally-closed contact DL1 machinery is not in place or contacts is bad and not conducting, time relay sj 1 energized circuit can be caused obstructed, non-uniform protection is failure to actuate, transmitting circuit shown in Fig. 6 is used for solving the problem, this transmitting circuit interface ZJ1-7 and ZJ2-7, so any a set of loop start all can transmit, operations staff can be warned, thus analysis judges that whether action behavior is correct further, reduce three-phase body non-uniform protection be failure to actuate occur probability, using value is high.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (2)
1. a circuit design for the body three phases un identical protection of faulty action preventing, is characterized in that, comprises starting-up later time one, starting-up later time two and outlet loop;
Described starting-up later time one is connected between power positive cathode, comprise the normal opened contact SJ1-1 of separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1, outlet intermediate relay ZJ 1 and described time relay sj 1, described separating brake normally-closed contact group one, combined floodgate normally opened contact group one, time relay sj 1 are connected successively, and described outlet intermediate relay ZJ 1 is in parallel with described time relay sj 1 after connecting with the normal opened contact SJ1-1 of described time relay sj 1, described starting-up later time two is connected between power positive cathode, comprise the normal opened contact SJ2-1 of separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2, outlet intermediate relay ZJ 2 and described time relay sj 2, described separating brake normally-closed contact group two, combined floodgate normally opened contact group two, time relay sj 2 are connected successively, and described outlet intermediate relay ZJ 2 is in parallel with described time relay sj 2 after connecting with the normal opened contact SJ2-1 of described time relay sj 2, described outlet loop is connected between power positive cathode, comprise 6 normal opened contact ZJ1-1 of described outlet intermediate relay ZJ 1, ZJ1-2, ZJ1-3, ZJ1-4, ZJ1-5, ZJ1-6, 6 normal opened contact ZJ2-1 of described outlet intermediate relay ZJ 2, ZJ2-2, ZJ2-3, ZJ2-4, ZJ2-5, ZJ2-6 and 6 circuit breaker trip coil, described normal opened contact ZJ1-1, ZJ2-1 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-2, ZJ2-2 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-3, ZJ2-3 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-4, ZJ2-4 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-5, ZJ2-5 and 1 circuit breaker trip coils connected in series, described normal opened contact ZJ1-6, ZJ2-6 is in parallel one by one again with after 1 circuit breaker trip coils connected in series,
Described separating brake normally-closed contact group one and described separating brake normally-closed contact group two are formed in parallel by three-phase separating brake normally-closed contact respectively, and described combined floodgate normally opened contact group one and described combined floodgate normally opened contact group two are formed in parallel by three-phase combined floodgate normally opened contact respectively.
2. the circuit design of the body three phases un identical protection of faulty action preventing according to claim 1; it is characterized in that; also comprise transmitting circuit, described transmitting circuit comprises the normal opened contact ZJ1-7 of the outlet intermediate relay ZJ 1 be arranged in parallel and the normal opened contact ZJ2-7 of outlet intermediate relay ZJ 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441445.3A CN104242266A (en) | 2014-09-01 | 2014-09-01 | Circuit design preventing false action and used for three-phase body inconsistent protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410441445.3A CN104242266A (en) | 2014-09-01 | 2014-09-01 | Circuit design preventing false action and used for three-phase body inconsistent protection |
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| CN104242266A true CN104242266A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410441445.3A Pending CN104242266A (en) | 2014-09-01 | 2014-09-01 | Circuit design preventing false action and used for three-phase body inconsistent protection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322518A (en) * | 2015-10-30 | 2016-02-10 | 河南平芝高压开关有限公司 | Control cubicle matched with GIS equipment for use |
| CN107959280A (en) * | 2017-12-28 | 2018-04-24 | 贵州电网有限责任公司 | A kind of breaker body three phases un identical protection circuit and control method |
| CN110880742A (en) * | 2019-12-13 | 2020-03-13 | 深圳供电局有限公司 | High-voltage circuit breaker body three-phase inconsistent protection secondary circuit structure |
Citations (3)
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| JPS6474016A (en) * | 1987-09-10 | 1989-03-20 | Nissin Electric Co Ltd | Controller for distribution line section switch |
| CN201025670Y (en) * | 2006-12-11 | 2008-02-20 | 国电南京自动化股份有限公司 | Dual and/or protection outlet error tolerance mechanism |
| CN103928915A (en) * | 2014-04-11 | 2014-07-16 | 国家电网公司 | Non-full-phase protecting circuit of circuit breaker |
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2014
- 2014-09-01 CN CN201410441445.3A patent/CN104242266A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6474016A (en) * | 1987-09-10 | 1989-03-20 | Nissin Electric Co Ltd | Controller for distribution line section switch |
| CN201025670Y (en) * | 2006-12-11 | 2008-02-20 | 国电南京自动化股份有限公司 | Dual and/or protection outlet error tolerance mechanism |
| CN103928915A (en) * | 2014-04-11 | 2014-07-16 | 国家电网公司 | Non-full-phase protecting circuit of circuit breaker |
Non-Patent Citations (4)
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| 刘滨涛等: "一起三相不一致保护误动分析", 《广西电力》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322518A (en) * | 2015-10-30 | 2016-02-10 | 河南平芝高压开关有限公司 | Control cubicle matched with GIS equipment for use |
| CN107959280A (en) * | 2017-12-28 | 2018-04-24 | 贵州电网有限责任公司 | A kind of breaker body three phases un identical protection circuit and control method |
| CN107959280B (en) * | 2017-12-28 | 2023-06-16 | 贵州电网有限责任公司 | Three-phase inconsistent protection circuit of circuit breaker body |
| CN110880742A (en) * | 2019-12-13 | 2020-03-13 | 深圳供电局有限公司 | High-voltage circuit breaker body three-phase inconsistent protection secondary circuit structure |
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Application publication date: 20141224 |