CN204886156U - Protection of line change group - Google Patents
Protection of line change group Download PDFInfo
- Publication number
- CN204886156U CN204886156U CN201520445266.7U CN201520445266U CN204886156U CN 204886156 U CN204886156 U CN 204886156U CN 201520445266 U CN201520445266 U CN 201520445266U CN 204886156 U CN204886156 U CN 204886156U
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- protection
- transformer
- circuit breaker
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Abstract
The utility model discloses a protection of line change group, the node of leaving of transformer trip protection export passes through the income of opening that transformer low voltage side circuit breaker DL3 is connected to the hardwire, the 110kV that jumps onto grade transformer substation 1 by circuit optic fibre differential protection's the straight jump function side circuit breaker of being qualified for the next round of competitions is still opened through what the hardwire was connected to circuit optic fibre differential protection by the node of leaving of transformer trip protection export. The utility model discloses to have cancelled transformer substation of subordinate 2 and set up the circuit breaker in the middle of circuit and transformer originally, but the needs in order protecting to keep the current transformer between them.
Description
Technical field
The utility model relates to a kind of electric power protection, specifically a kind of line change group protection.
Background technology
The wiring of line change group is exactly that circuit is directly connected with transformer, form independently wiring units, centre does not have bus, it is the simplest mode of connection of one, the equipment that is characterized in is few, reduced investment, easy and simple to handle, be suitable for enlarging, but flexibility and reliability lower, become the main flow mode of connection of present newly-built 110kV passive termination transformer station.
As shown in Figure 1, be traditional circuit transformer group wiring schematic diagram.110kV line configuring Current Differential Protection, during line fault between 1 to subordinate transformer station of higher level transformer station 2, our station 110kV outgoing line side circuit breaker DL1 is jumped in higher level transformer station 1 Current Differential Protection action, transmit to transformer station of subordinate 2 by optical fiber remote transmission device, our station inlet wire side circuit breaker DL2 jumps in transformer station of subordinate 2 simultaneously; In like manner, this side circuit breaker DL2 jumps in transformer station of subordinate 2, transmits simultaneously and jumps circuit breaker DL1 to higher level transformer station 1.
Transformer station of subordinate 2 transformer configures differential protection, backup protection and non-ionizing energy loss routinely, and protection act jumps both sides circuit breaker DL2 and DL3.
Utility model content
The purpose of this utility model is to provide a kind of line change group to protect, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
The protection of a kind of line change group, tranformer protection tripping operation outlet output node by hardwire connection transformer low-pressure side circuit breaker DL3 open into; Tranformer protection tripping operation outlet output node also by hardwire be connected to circuit optical fiber differential protection open into, jumped onto the 110kV outgoing line side circuit breaker of grade transformer station 1 by the straight jumping function of circuit optical fiber differential protection.
Compared with prior art, the beneficial effects of the utility model are: eliminate the circuit breaker that transformer station of subordinate 2 was erected at circuit and transformer centre originally, but the needs in order to protect, retain the current transformer between them.Relaying configuration aspect, configures identical with traditional transformer station, 110kV line configuring Current Differential Protection; Transformer configuration differential protection, backup protection and non-ionizing energy loss; 110kV line current longitudinal difference protection is consistent with traditional transformer station; jump this side circuit breaker separately after protection act and transmitted by optical fiber remote transmission device and jump offside circuit breaker to offside; transformer station of subordinate 2 transformer configures differential protection, backup protection and non-ionizing energy loss routinely; protection act jumps our station low-pressure side circuit breaker DL3, and concurrent trip signal goes to jump onto grade transformer station 1 line-breaker DL1 through the optical fiber remote transmission device teletransmission of 110kV line protective devices.
Accompanying drawing explanation
Fig. 1 is traditional circuit transformer group wiring schematic diagram;
Fig. 2 is line-transformer-connection schematic diagram of the present utility model.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1 ~ 2, in the utility model embodiment, the protection of a kind of line change group, tranformer protection tripping operation outlet output node by hardwire connection transformer low-pressure side circuit breaker DL3 open into; Tranformer protection tripping operation outlet output node also by hardwire be connected to circuit optical fiber differential protection open into, jumped onto the 110kV outgoing line side circuit breaker of grade transformer station 1 by the straight jumping function of circuit optical fiber differential protection.
Operation principle of the present utility model is: refer to Fig. 2, and 110kV line current longitudinal difference protection is consistent with traditional transformer station, jumps this side circuit breaker separately and is transmitted by optical fiber remote transmission device and jump offside circuit breaker to offside after protection act.
Transformer station of subordinate 2 transformer configures differential protection, backup protection and non-ionizing energy loss routinely, jumps both sides circuit breaker after protection act.
Tranformer protection tripping operation outlet output node by hardwire connection transformer low-pressure side circuit breaker DL3 open into.
Tranformer protection tripping operation outlet output node by hardwire be connected to circuit optical fiber differential protection open into; jumped onto the 110kV outgoing line side circuit breaker of grade transformer station 1 by the straight jumping function of circuit optical fiber differential protection, thus realize tranformer protection jumping both sides circuit breaker.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (1)
1. line change group protection, is characterized in that, tranformer protection tripping operation outlet output node by hardwire connection transformer low-pressure side circuit breaker DL3 open into; Tranformer protection tripping operation outlet output node also by hardwire be connected to circuit optical fiber differential protection open into, jumped onto the 110kV outgoing line side circuit breaker of a grade transformer station (1) by the straight jumping function of circuit optical fiber differential protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445266.7U CN204886156U (en) | 2015-06-25 | 2015-06-25 | Protection of line change group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445266.7U CN204886156U (en) | 2015-06-25 | 2015-06-25 | Protection of line change group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204886156U true CN204886156U (en) | 2015-12-16 |
Family
ID=54830488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520445266.7U Expired - Fee Related CN204886156U (en) | 2015-06-25 | 2015-06-25 | Protection of line change group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204886156U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896470A (en) * | 2016-06-03 | 2016-08-24 | 南京国电南自电网自动化有限公司 | Double loop network-based protection device free of main in-situ transformer and protection method |
| CN106300262A (en) * | 2016-08-26 | 2017-01-04 | 大唐黄岛发电有限责任公司 | A kind of 220kV grade transformer protection method for transformer station's remote power-feeding |
| CN108711834A (en) * | 2018-06-06 | 2018-10-26 | 广东电网有限责任公司 | Improve the system and method for reclosing success rate |
-
2015
- 2015-06-25 CN CN201520445266.7U patent/CN204886156U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896470A (en) * | 2016-06-03 | 2016-08-24 | 南京国电南自电网自动化有限公司 | Double loop network-based protection device free of main in-situ transformer and protection method |
| CN106300262A (en) * | 2016-08-26 | 2017-01-04 | 大唐黄岛发电有限责任公司 | A kind of 220kV grade transformer protection method for transformer station's remote power-feeding |
| CN106300262B (en) * | 2016-08-26 | 2019-02-05 | 大唐黄岛发电有限责任公司 | A kind of 220kV grade transformer protection method for substation's remote power-feeding |
| CN108711834A (en) * | 2018-06-06 | 2018-10-26 | 广东电网有限责任公司 | Improve the system and method for reclosing success rate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200625 |