CN107919243B - The improvement structure and control method in a kind of disconnecting switch electric blocking circuit - Google Patents
The improvement structure and control method in a kind of disconnecting switch electric blocking circuit Download PDFInfo
- Publication number
- CN107919243B CN107919243B CN201710454285.XA CN201710454285A CN107919243B CN 107919243 B CN107919243 B CN 107919243B CN 201710454285 A CN201710454285 A CN 201710454285A CN 107919243 B CN107919243 B CN 107919243B
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- Prior art keywords
- disconnecting switch
- breaker
- line
- positive pole
- earthing isolator
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005204 segregation Methods 0.000 claims description 4
- 238000012423 maintenance Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 4
- 230000008030 elimination Effects 0.000 description 4
- 238000003379 elimination reaction Methods 0.000 description 4
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- 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
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- Gas-Insulated Switchgears (AREA)
Abstract
The present invention relates to a kind of improvement structure in disconnecting switch electric blocking circuit and control methods.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 end of breaker DL, and the normally opened contact DL-2 of breaker DL is connected with the parallel circuit of secondary female disconnecting switch 2G with positive pole disconnecting switch control loop and secondary female disconnecting switch control loop through positive pole disconnecting switch 1G.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, reduces cost.
Description
Technical field
The present invention relates to a kind of disconnecting switch electric blocking circuit more particularly to a kind of reduction laying cable, simplification are secondary
The improvement structure and control method in the disconnecting switch electric blocking circuit in circuit.
Background technique
220kV substation carries main power supply task in local power network, and station equipment is numerous, just to operator
Really operation proposes higher requirement.Therefore, no matter from the safe operation of grid equipment, or the personal safety from operator
Angle is set out, and design Improving Equipment anti-misoperation locking measure is the important content of Substation Design.Currently, in 220kV substation every
Leave pass and mostly use electrically operated mode, therefore, design and reliable electrical 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 mostly uses stand alone type, i.e., each disconnecting switch is latched back using independent
Locked loop is serially connected within respective control loop by road, although the basic of anti-misoperation locking may be implemented in this connection type
It is required that but have the shortcomings that following: the auxiliary contact of needs 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.
Summary of the invention
In order to solve the above-mentioned technical problem the present invention, provides the improvement structure and control in a kind of disconnecting switch electric blocking circuit
Method processed effectively reduces cable laying amount and auxiliary node usage amount, simplifies secondary circuit, reduces the work of daily O&M defect elimination
It measures, saves engineering material, reduce cost.
Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals: a kind of isolation of the invention
Switch the improvement 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
It flows the total operation power of 220V to be connected, the other end of positive pole disconnecting switch 1G through breaker line side earthing isolator 3GD1 and breaks
The common end 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 improvement structure in the disconnecting switch electric blocking circuit includes line disconnecting switch 3G and route
The normally-closed contact DL-1 of earthing isolator 3GD2, breaker DL are connected with one end of line-to-ground disconnecting switch 3GD2, route
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 system of 220KV double bus scheme, one end of breaker DL, one
Road is connected through positive pole disconnecting switch 1G with 220KV positive bus-bar, and another way is connected through pair mother disconnecting switch 2G with 220KV pair bus,
It is also 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 improvement structure in a kind of disconnecting switch electric blocking circuit of the invention, for positive pole disconnecting switch
1G can be unlocked operation when meeting following two condition for the moment:
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 breaks in quartile
The normally opened contact DL-2 of road device DL is in coincidence, and mother disconnecting switch 2G is in coincidence for pair；
Operation can be unlocked when meeting following two condition for the moment for secondary female disconnecting switch 2G:
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 breaks in quartile
The normally opened contact DL-2 of road device DL is in coincidence, and 1G is in coincidence for positive pole disconnecting switch.
Preferably, the control method of the improvement structure in the disconnecting switch electric blocking circuit includes: for route
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 in quartile, can connect line disconnecting switch control
Circuit.
The beneficial effects of the present invention are: not only may be implemented to be isolated by the improvement to disconnecting switch electric blocking circuit
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.
Detailed description of the invention
Fig. 1 is a kind of attachment structure schematic diagram of the invention.
Fig. 2 is the 220KV line segregation primary system figure of 220KV double bus scheme 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-bar, 6.220KV pair bus, 7. use electric line.
Specific 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: a kind of improvement structure in disconnecting switch electric blocking circuit of the present embodiment, in 220KV double bus scheme
220KV line segregation primary system 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 are connected through positive pole disconnecting switch 1G with 220KV positive bus-bar 5, separately all the way
It is connected all the way through pair mother disconnecting switch 2G with 220KV pair bus 6, there are also all the way through circuit breaker bus line side earthing isolator 1GD
Ground connection, 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 route
Side earthing isolator 3GD1 ground connection, line disconnecting switch 3G and with the connecting pin of electric line 7 via line earthing isolator again
3GD2 ground connection.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 improvement 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 is connected with the total operation power 1 of alternating current 220V, and the other end of positive pole disconnecting switch 1G is through breaker line side earthing isolator
3GD1 is connected with the common end 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 of switch 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, and the normally-closed contact DL-1 of breaker DL is again and positive pole disconnecting switch control loop 2 and secondary female
Disconnecting switch control loop 3 is connected.
The control method of the improvement structure in above-mentioned disconnecting switch electric blocking circuit are as follows:
Operation can be unlocked when meeting following two condition for the moment for positive pole disconnecting switch 1G:
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 breaks in quartile
The normally opened contact DL-2 of road device DL is in coincidence, and mother disconnecting switch 2G is in coincidence for pair.
Operation can be unlocked when meeting following two condition for the moment for secondary female disconnecting switch 2G:
1) circuit breaker bus line side earthing isolator 1GD, breaker line side earthing isolator 3GD1 and breaker DL
Normally-closed contact DL-1 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 breaks in quartile
The normally opened contact DL-2 of road device DL is in coincidence, and 1G is in coincidence for positive pole disconnecting switch.
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 in quartile, can be connected
Line disconnecting switch control loop 4.
Locking cannot be considered as apparent cut-off point to breaker in requiring, therefore, to positive pole disconnecting switch 1G, it is secondary female every
Leave close 2G, line disconnecting switch 3G electric operating locking require it is as follows:
1) breaker DL coincidence, electric blocking positive pole disconnecting switch 1G, secondary mother disconnecting switch 2G and line disconnecting switch 3G.
2) positive pole disconnecting switch 1G coincidence does not need to sentence the position breaker DL, can open pair mother disconnecting switch 2G operation.
3) secondary female disconnecting switch 2G coincidence, does not need to sentence the position breaker DL, can open positive pole disconnecting switch 1G operation.
4) breaker line side earthing isolator 3GD1 coincidence, 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 coincidence, blocked line disconnecting switch 3G.
6) circuit breaker bus line side earthing isolator 1GD coincidence, electric blocking positive pole disconnecting switch 1G, secondary female disconnecting switch
2G and line disconnecting switch 3G.
The present embodiment can satisfy electric blocking requirement of the scene to disconnecting switch, needed for cable core number be 19 cores,
It 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
Helping number of nodes is 12.
After applying the present invention, isolating-switch locking requirement not only may be implemented, auxiliary node and electricity can also be effectively reduced
The laying of cable simplifies secondary circuit, reduces the workload of daily O&M defect elimination, saves engineering material, reduces cost.
Claims (2)
1. a kind of control method of the improvement structure in disconnecting switch electric blocking circuit, it is characterised in that disconnecting switch electric blocking
The improvement structure in circuit, including breaker DL, positive pole disconnecting switch 1G, secondary female disconnecting switch 2G, circuit breaker bus line side ground connection every
It leaves and closes 1GD and breaker line side earthing isolator 3GD1, one end of positive pole disconnecting switch 1G and alternating current 220V always operate
Power supply (1) is connected, and the other end of positive pole disconnecting switch 1G is through breaker line side earthing isolator 3GD1 and breaker DL
Common end A is connected, parallel circuit of the normally opened contact DL-2 of breaker DL through positive pole disconnecting switch 1G and secondary female disconnecting switch 2G
It is connected with positive pole disconnecting switch control loop (2) and secondary female disconnecting switch control loop (3)；Including line disconnecting switch 3G and line
The normally-closed contact DL-1 of road earthing isolator 3GD2, breaker DL are connected with one end of line-to-ground disconnecting switch 3GD2, line
The other end of road earthing isolator 3GD2 is connected with line disconnecting switch control loop (4), the normally-closed contact DL- of breaker DL
1 is connected with the positive pole disconnecting switch control loop (2) and secondary female disconnecting switch control loop (3) again；In 220KV double-bus
In the 220KV line segregation primary system of wiring, one end of breaker DL, all the way through positive pole disconnecting switch 1G and 220KV positive pole
Line (5) is connected, and another way is connected through pair mother disconnecting switch 2G with 220KV pair bus (6), and there are also connect through circuit breaker bus line side all the way
Ground disconnecting switch 1GD ground connection, the other end of breaker DL, via line disconnecting switch 3G is connected with electric line (7) all the way, another
Road is grounded through breaker line side earthing isolator 3GD1, line disconnecting switch 3G and is passed through again with the connecting pin of electric line (7)
Line-to-ground disconnecting switch 3GD2 ground connection；
The control method of the improvement structure in disconnecting switch electric blocking circuit are as follows:
Operation can be unlocked when meeting following two condition for the moment for positive pole disconnecting switch 1G:
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 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are in quartile, breaker
The normally opened contact DL-2 of DL is in coincidence, and mother disconnecting switch 2G is in coincidence for pair；
Operation can be unlocked when meeting following two condition for the moment for secondary female disconnecting switch 2G:
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 in quartile；
2) circuit breaker bus line side earthing isolator 1GD and breaker line side earthing isolator 3GD1 are in quartile, breaker
The normally opened contact DL-2 of DL is in coincidence, and 1G is in coincidence for positive pole disconnecting switch.
2. a kind of control method of the improvement structure in disconnecting switch electric blocking circuit according to claim 1, feature
Be include: for line disconnecting switch 3G, when meet circuit breaker bus line side earthing isolator 1GD, breaker route flanks
The normally-closed contact DL-1 of ground disconnecting switch 3GD1, line-to-ground disconnecting switch 3GD2 and breaker DL are in quartile, Fang Kejie
Logical 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 CN107919243A (en) | 2018-04-17 |
| CN107919243B true 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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| Publication number | Publication date |
|---|---|
| CN107919243A (en) | 2018-04-17 |
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