CN107919243A - A kind of improved structure and control method in disconnecting switch electric blocking circuit - Google Patents
A kind of improved structure and control method in disconnecting switch electric blocking circuit Download PDFInfo
- Publication number
- CN107919243A CN107919243A CN201710454285.XA CN201710454285A CN107919243A CN 107919243 A CN107919243 A CN 107919243A CN 201710454285 A CN201710454285 A CN 201710454285A CN 107919243 A CN107919243 A CN 107919243A
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- CN
- China
- Prior art keywords
- disconnecting switch
- breaker
- line
- positive pole
- earthing isolator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
Abstract
The present invention relates to a kind of improved structure and control method in disconnecting switch electric blocking circuit.One end of positive pole disconnecting switch 1G is connected with the total operation power of alternating current 220V, the other end of positive pole disconnecting switch 1G is connected through breaker line side earthing isolator 3GD1 with the common port of breaker DL, and the normally opened contact DL 2 of breaker DL is connected through positive pole disconnecting switch 1G with the parallel circuit of secondary female disconnecting switch 2G with positive pole disconnecting switch control loop and secondary female disconnecting switch control loop.The normally-closed contact DL 1 of breaker DL is connected with one end of line-to-ground disconnecting switch 3GD2, the other end of line-to-ground disconnecting switch 3GD2 is connected with line disconnecting switch control loop, and the normally-closed contact DL 1 of breaker DL is connected with positive pole disconnecting switch control loop and secondary female disconnecting switch control loop again.The present invention not only realizes isolating-switch locking requirement, but also effectively reduces the laying of auxiliary node and cable, simplifies secondary circuit, reduces maintenance work amoun, saves engineering material, reduce cost.
Description
Technical field
The present invention relates to a kind of disconnecting switch electric blocking circuit, more particularly to a kind of to reduce laying cable, simplification secondary
The improved structure and control method in the disconnecting switch electric blocking circuit in circuit.
Background technology
220kV substations carry main power supply task in local power network, and station equipment is numerous, to operating personnel just
Really operation proposes higher requirement.Therefore, no matter from the safe operation of grid equipment, or the personal safety from operating personnel
Angle is set out, and design Improving Equipment anti-misoperation locking measure is the important content of Substation Design.At present, in 220kV substations every
Leave that pass uses electrically operated mode, therefore, design and reliable electrically error blocking proof circuit is installed it is possible to prevente effectively from
The maloperation of disconnecting switch.
Isolating-switch locking circuit common at present is returned using stand alone type, i.e., each disconnecting switch using independent locking more
Road, locked loop is serially connected within respective control loop, although this connection mode can realize the basic of anti-misoperation locking
It is required that but there is it is following the shortcomings that：The auxiliary contact needed is more, and cable is also required to be laid respectively, cable consumption
It is larger；Circuit quantity is more, more complicated, increases the difficulty of daily O＆M defect elimination.
The content of the invention
The present invention is in order to solve the above-mentioned technical problem, there is provided a kind of improved structure in disconnecting switch electric blocking circuit and control
Method processed, it effectively reduces cable laying amount and auxiliary node usage amount, simplifies secondary circuit, reduces the work of daily O＆M defect elimination
Measure, save engineering material, reduce cost.
The above-mentioned technical problem of the present invention is mainly what is be addressed by following technical proposals：A kind of isolation of the present invention
Switch the improved structure in electric blocking circuit, including breaker DL, positive pole disconnecting switch 1G, secondary female disconnecting switch 2G, breaker
Bus bar side earthing isolator 1GD and breaker line side earthing isolator 3GD1, one end of positive pole disconnecting switch 1G and friendship
The stream total operation powers of 220V are connected, and the other end of positive pole disconnecting switch 1G through breaker line side earthing isolator 3GD1 and breaks
The common port A of road device DL is connected, and the normally opened contact DL-2 of breaker DL is through positive pole disconnecting switch 1G's and secondary female disconnecting switch 2G
Parallel circuit is connected with positive pole disconnecting switch control loop and secondary female disconnecting switch control loop.
Preferably, the improved structure in the disconnecting switch electric blocking circuit includes line disconnecting switch 3G and circuit
The normally-closed contact DL-1 of earthing isolator 3GD2, breaker DL are connected with one end of line-to-ground disconnecting switch 3GD2, circuit
The other end of earthing isolator 3GD2 is connected with line disconnecting switch control loop, the normally-closed contact DL-1 of breaker DL again and
The positive pole disconnecting switch control loop and secondary female disconnecting switch control loop are connected.
Preferably, in the 220KV line segregation primary systems of 220KV double bus schemes, one end of breaker DL, one
Road is connected through positive pole disconnecting switch 1G with 220KV positive bus-bars, and another way is connected through pair mother disconnecting switch 2G with 220KV pair busbares,
Also it is grounded all the way through circuit breaker bus line side earthing isolator 1GD, the other end of breaker DL, all the way via line disconnecting switch
3G is connected with electric line, and another way is grounded through breaker line side earthing isolator 3GD1, line disconnecting switch 3G and use
Via line earthing isolator 3GD2 is grounded again for the connecting pin of electric line.
Preferably, the positive pole disconnecting switch 1G, pair mother disconnecting switch 2G and line disconnecting switch 3G are electronic
Operating-mode switch, circuit breaker bus line side earthing isolator 1GD, the breaker line side earthing isolator 3GD1 and
Line-to-ground disconnecting switch 3GD2 is manual operation mode switch.
The control method of the improved structure in a kind of disconnecting switch electric blocking circuit of the present invention, for positive pole disconnecting switch
1G, when meeting following two conditions a period of time, can be unlocked operation：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, break
The normally opened contact DL-2 of road device DL is closing position, and pair mother disconnecting switch 2G is in conjunction position；
For secondary female disconnecting switch 2G, when meeting following two conditions a period of time, operation can be unlocked：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, break
The normally opened contact DL-2 of road device DL is closing position, and positive pole disconnecting switch 1G is in conjunction position.
Preferably, the control method of the improved structure in the disconnecting switch electric blocking circuit includes：For circuit
Disconnecting switch 3G, when meeting circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1, line
The normally-closed contact DL-1 of road earthing isolator 3GD2 and breaker DL can connect line disconnecting switch control when dividing position
Circuit.
The beneficial effects of the invention are as follows：By the improvement to disconnecting switch electric blocking circuit, isolation can be not only realized
Circuit breaker lock requirement, can also effectively reduce the laying of auxiliary node and cable, simplify secondary circuit, reduce daily O＆M defect elimination
Workload, save engineering material, reduce cost.
Brief description of the drawings
Fig. 1 is a kind of attachment structure schematic diagram of the present invention.
Fig. 2 is the 220KV line segregation primary system figures of 220KV double bus schemes in the present invention.
The total operation power of 1. alternating current 220V in figure, 2. positive pole disconnecting switch control loops, 3. secondary female disconnecting switch control back
Road, 4. line disconnecting switch control loops, 5.220KV positive bus-bars, 6.220KV pair busbares, 7. use electric line.
Embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
Embodiment：The improved structure in a kind of disconnecting switch electric blocking circuit of the present embodiment, in 220KV double bus schemes
220KV line segregation primary systems in, as shown in Fig. 2, including breaker DL, positive pole disconnecting switch 1G, secondary female disconnecting switch
2G, line disconnecting switch 3G, circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and
Line-to-ground disconnecting switch 3GD2, one end of breaker DL, is connected, separately through positive pole disconnecting switch 1G with 220KV positive bus-bars 5 all the way
It is connected all the way through pair mother disconnecting switch 2G with 220KV pairs busbar 6, also all the way through circuit breaker bus line side earthing isolator 1GD
It is grounded, the other end of breaker DL, via line disconnecting switch 3G is connected with electric line 7 all the way, and another way is through breaker circuit
Side earthing isolator 3GD1 is grounded, line disconnecting switch 3G and with the connecting pin of electric line 7 via line earthing isolator again
3GD2 is grounded.Positive pole disconnecting switch 1G, pair mother disconnecting switch 2G and line disconnecting switch 3G are electric operation mode switch, are broken
Road device bus bar side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and line-to-ground disconnecting switch 3GD2
It is manual operation mode switch.
The improved structure in the disconnecting switch electric blocking circuit of the present embodiment, as shown in Figure 1, the one of positive pole disconnecting switch 1G
End operation power 1 total with alternating current 220V is connected, and the other end of positive pole disconnecting switch 1G is through breaker line side earthing isolator
3GD1 is connected with the common port A of breaker DL, and the normally opened contact DL-2 of breaker DL is through positive pole disconnecting switch 1G and secondary female isolation
The parallel circuit for switching 2G is connected with positive pole disconnecting switch control loop 2 and secondary female disconnecting switch control loop 3.Breaker DL's
Normally-closed contact DL-1 is connected with one end of line-to-ground disconnecting switch 3GD2, the other end and line of line-to-ground disconnecting switch 3GD2
Road disconnecting switch control loop 4 is connected, the normally-closed contact DL-1 of breaker DL and and positive pole disconnecting switch control loop 2 and secondary mother
Disconnecting switch control loop 3 is connected.
The control method of the improved structure in above-mentioned disconnecting switch electric blocking circuit is：
For positive pole disconnecting switch 1G, when meeting following two conditions a period of time, operation can be unlocked：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, break
The normally opened contact DL-2 of road device DL is closing position, and pair mother disconnecting switch 2G is in conjunction position.
For secondary female disconnecting switch 2G, when meeting following two conditions a period of time, operation can be unlocked：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, break
The normally opened contact DL-2 of road device DL is closing position, and positive pole disconnecting switch 1G is in conjunction position.
For line disconnecting switch 3G, when meeting circuit breaker bus line side earthing isolator 1GD, breaker line side ground connection
The normally-closed contact DL-1 of disconnecting switch 3GD1, line-to-ground disconnecting switch 3GD2 and breaker DL can be connected when dividing position
Line disconnecting switch control loop 4.
In locking requirement, obvious cut-off point cannot be considered as to breaker, therefore, to positive pole disconnecting switch 1G, it is secondary female every
Leave that to close 2G, the electric operating locking requirement of line disconnecting switch 3G as follows：
1) breaker DL closes position, electric blocking positive pole disconnecting switch 1G, secondary mother disconnecting switch 2G and line disconnecting switch 3G.
2) positive pole disconnecting switch 1G closes position, it is not necessary to sentences breaker DL positions, you can open secondary female disconnecting switch 2G operations.
3) secondary female disconnecting switch 2G closes position, it is not necessary to sentences breaker DL positions, you can open positive pole disconnecting switch 1G operations.
4) earthing isolator 3GD1 in breaker line side closes position, and electric blocking positive pole disconnecting switch 1G, secondary mother keep apart
Close 2G and line disconnecting switch 3G.
5) line-to-ground disconnecting switch 3GD2 closes position, blocked line disconnecting switch 3G.
6) circuit breaker bus line side earthing isolator 1GD closes position, electric blocking positive pole disconnecting switch 1G, secondary female disconnecting switch
2G and line disconnecting switch 3G.
The present embodiment can meet electric blocking requirement of the scene to disconnecting switch, and the cable core number needed for it is 19 cores,
The use of auxiliary node quantity is 7, and traditional disconnecting switch electric blocking circuit, required cable core number are 30 cores, use is auxiliary
It is 12 to help number of nodes.
After applying the present invention, it can not only realize isolating-switch locking requirement, can also effectively reduce auxiliary node and electricity
The laying of cable, simplifies secondary circuit, reduces the workload of daily O＆M defect elimination, saves engineering material, reduces cost.
Claims (6)
1. a kind of improved structure in disconnecting switch electric blocking circuit, it is characterised in that including breaker DL, positive pole disconnecting switch
1G, secondary female disconnecting switch 2G, circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1,
One end of positive pole disconnecting switch 1G is connected with the total operation power of alternating current 220V (1), and the other end of positive pole disconnecting switch 1G is through open circuit
Device line side earthing isolator 3GD1 is connected with the common port A of breaker DL, and the normally opened contact DL-2 of breaker DL is through positive pole
The parallel circuit and positive pole disconnecting switch control loop (2) of disconnecting switch 1G and secondary female disconnecting switch 2G and secondary female disconnecting switch control
Circuit (3) processed is connected.
2. the improved structure in a kind of disconnecting switch electric blocking circuit according to claim 1, it is characterised in that including line
The normally-closed contact DL-1 and line-to-ground disconnecting switch of road disconnecting switch 3G and line-to-ground disconnecting switch 3GD2, breaker DL
One end of 3GD2 is connected, and the other end of line-to-ground disconnecting switch 3GD2 is connected with line disconnecting switch control loop (4), open circuit
The normally-closed contact DL-1 of device DL and and the positive pole disconnecting switch control loop (2) and secondary female disconnecting switch control loop (3)
It is connected.
3. the improved structure in a kind of disconnecting switch electric blocking circuit according to claim 2, it is characterised in that in 220KV
In the 220KV line segregation primary systems of double bus scheme, one end of breaker DL, all the way through positive pole disconnecting switch 1G and
220KV positive bus-bars (5) are connected, and another way is connected through pair mother disconnecting switch 2G with 220KV pairs busbar (6), also all the way through open circuit
Device bus bar side earthing isolator 1GD is grounded, the other end of breaker DL, via line disconnecting switch 3G and uses electric line all the way
(7) it is connected, another way is grounded through breaker line side earthing isolator 3GD1, line disconnecting switch 3G and with electric line (7)
Connecting pin again via line earthing isolator 3GD2 be grounded.
4. the improved structure in a kind of disconnecting switch electric blocking circuit according to Claims 2 or 3, it is characterised in that described
Positive pole disconnecting switch 1G, pair mother disconnecting switch 2G and line disconnecting switch 3G be electric operation mode switch, it is described disconnected
Road device bus bar side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and line-to-ground disconnecting switch 3GD2
It is manual operation mode switch.
5. a kind of control method of the improved structure in disconnecting switch electric blocking circuit, it is characterised in that for positive pole disconnecting switch
1G, when meeting following two conditions a period of time, can be unlocked operation：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL it is normal
Closed contact DL-1 is dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, breaker
The normally opened contact DL-2 of DL is closing position, and pair mother disconnecting switch 2G is in conjunction position；
For secondary female disconnecting switch 2G, when meeting following two conditions a period of time, operation can be unlocked：
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL it is normal
Closed contact DL-1 is dividing position；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are dividing position, breaker
The normally opened contact DL-2 of DL is closing position, and positive pole disconnecting switch 1G is in conjunction position.
6. a kind of control method of the improved structure in disconnecting switch electric blocking circuit according to claim 5, its feature
Being the improved structure in disconnecting switch electric blocking circuit includes line disconnecting switch 3G and line-to-ground disconnecting switch 3GD2, breaks
The normally-closed contact DL-1 of road device DL is connected with one end of line-to-ground disconnecting switch 3GD2, and line-to-ground disconnecting switch 3GD2's is another
One end is connected with line disconnecting switch control loop (4), and the normally-closed contact DL-1 of breaker DL keeps apart with the positive pole again
Close control loop (2) and secondary female disconnecting switch control loop (3) is connected；The control of the improved structure in disconnecting switch electric blocking circuit
Method processed includes：For line disconnecting switch 3G, when meeting circuit breaker bus line side earthing isolator 1GD, breaker line side
The normally-closed contact DL-1 of earthing isolator 3GD1, line-to-ground disconnecting switch 3GD2 and breaker DL, can when dividing position
Connect line disconnecting switch control loop (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454285.XA CN107919243B (en) | 2017-06-15 | 2017-06-15 | The improvement structure and control method in a kind of disconnecting switch electric blocking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710454285.XA CN107919243B (en) | 2017-06-15 | 2017-06-15 | The improvement structure and control method in a kind of disconnecting switch electric blocking circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107919243A true CN107919243A (en) | 2018-04-17 |
| CN107919243B CN107919243B (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710454285.XA Active CN107919243B (en) | 2017-06-15 | 2017-06-15 | The improvement structure and control method in a kind of disconnecting switch electric blocking circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113252A (en) * | 2021-04-08 | 2021-07-13 | 广东电网有限责任公司 | Electric locking loop with outlet intervals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2608239A1 (en) * | 2010-08-20 | 2013-06-26 | Kabushiki Kaisha Toshiba | Magnetizing inrush current suppression device |
| CN106024492A (en) * | 2016-07-15 | 2016-10-12 | 山东钢铁股份有限公司 | Dual-bus disconnecting switch operation blocking electric circuit |
| CN206134549U (en) * | 2016-10-12 | 2017-04-26 | 国网新疆电力公司培训中心 | Device of keeping apart super high voltage circuit breaker |
| CN207038382U (en) * | 2017-06-15 | 2018-02-23 | 国网浙江省电力公司湖州供电公司 | A kind of improved structure in disconnecting switch electric blocking loop |
-
2017
- 2017-06-15 CN CN201710454285.XA patent/CN107919243B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2608239A1 (en) * | 2010-08-20 | 2013-06-26 | Kabushiki Kaisha Toshiba | Magnetizing inrush current suppression device |
| CN106024492A (en) * | 2016-07-15 | 2016-10-12 | 山东钢铁股份有限公司 | Dual-bus disconnecting switch operation blocking electric circuit |
| CN206134549U (en) * | 2016-10-12 | 2017-04-26 | 国网新疆电力公司培训中心 | Device of keeping apart super high voltage circuit breaker |
| CN207038382U (en) * | 2017-06-15 | 2018-02-23 | 国网浙江省电力公司湖州供电公司 | A kind of improved structure in disconnecting switch electric blocking loop |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113113252A (en) * | 2021-04-08 | 2021-07-13 | 广东电网有限责任公司 | Electric locking loop with outlet intervals |
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| Publication number | Publication date |
|---|---|
| CN107919243B (en) | 2019-09-20 |
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