CN202678731U - Quick spare phase layout structure for setting high-voltage cable outgoing line of power station - Google Patents
Quick spare phase layout structure for setting high-voltage cable outgoing line of power station Download PDFInfo
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- CN202678731U CN202678731U CN 201120395032 CN201120395032U CN202678731U CN 202678731 U CN202678731 U CN 202678731U CN 201120395032 CN201120395032 CN 201120395032 CN 201120395032 U CN201120395032 U CN 201120395032U CN 202678731 U CN202678731 U CN 202678731U
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- 239000012212 insulator Substances 0.000 claims abstract description 5
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- 239000004020 conductor Substances 0.000 claims description 5
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- 230000005611 electricity Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
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Abstract
The utility model discloses a quick spare phase layout structure for setting a high-voltage cable outgoing line of a power station. A high-voltage cable is laid by adopting a tunnel or channel, an A-B-C phase cable and a spare phase cable are set for line outgoing every time, and the cables are arranged in parallel. The quick spare phase layout structure is characterized in that: the spare phase cable is reserved with a wiring terminal, two ends of the spare phase cable are mounted with spare phase cable terminals, distances between the spare phase cable terminals and working cable terminals in horizontal and vertical directions are not smaller than distances between crossed uncovered live parts asynchronous in power cut overhaul, two line outgoing ends of the cable are provided with a tubular busbar constructed by post insulators, the tubular busbar and the spare phase cable terminal are in paratactic arrangement and are connected through a soft lead, the tubular busbar is in parallel arrangement with the working cable terminals, and an outgoing line at a main transformer high-voltage side is connected with the working cable terminals by overhead lines. The quick spare phase layout structure can greatly shorten the unscheduled shutdown time caused by fault of cable outgoing lines; meanwhile, the electrified distance is considered in the layout structure, the fault cable can be overhauled during the operation of a unit; and the replacement of the fault cable with the spare phase cable can be finished in several hours by adopting the quick spare phase layout scheme.
Description
Technical field
The utility model is applicable to also can adopt in line and Voltage Cable Lines Construction design at transformer station's cable in the design of electrical system that power plant high-tension cable outlet arranges spare phase, relates to a kind of Voltage Cable Lines Construction the spare phase arrangement is set.
Background technology
Along with the increase of power plant expansion project and the continuous compression of power plant's floor space, power plant's inner high voltage overhead outlet is arranged and is become increasingly complex, difficulty, even the engineering that the overhead wire outlet can't realize has appearred, only take other forms of outlet--high-tension cable or the outlet of SF6 gas-insulated pipeline bus.Because general outlet distance is all long, at least one span, adopt SF6 gas-insulated pipeline bus cost too high, thereby the engineering that a plurality of high-tension cable outlets occurred, I all adopt the high-tension cable outlet at Dongying strand engineering, Malaysian wood glue engineering and Vietnam Yongxin the second stage of the project of institute's design.Because there is certain failure rate in high-tension cable, and the high-tension cable Maintenance and Repair cycle is longer, therefore in order to shorten the time of causing the power plant to send owing to outlet cable fault, employing is implemented with the design of spare phase for the high-voltage terminal cable.And a simple high-tension cable for subsequent use is as spare phase; can not fully play the effect of Reduction of failure time, adopt cable termination, overvoltage protection measure, connection gold utensil etc. to arrange that fully the alternative scheme of installing can shorten the time that the power plant (electric substation) that is caused by the high-tension cable fault can't send electricity greatly.
The utility model content
The purpose of this utility model provides the arrangement that spare phase in a kind of high-tension cable outlet design substitutes fault phase fast, this arrangement is simple in structure, spare phase replaces the processing time of fault phase short, can at spare phase run duration trouble shooting phase cable, overhaul very convenient.
[0004]For achieving the above object, the utility model provides the high-tension cable outlet of a kind of power plant that quick spare phase arrangement is set, high-tension cable adopts tunnel or raceway groove to lay, whenever return back out line A is set, B, C three addition spare phase cables, cable adopts and is arranged in juxtaposition, it is characterized in that: the spare phase cable leaves binding post, the spare phase cable termination is installed at the two ends of spare phase cable, spare phase cable termination and working cable terminal level and vertical direction distance all are not less than intersects not the nothing of interruption maintenance simultaneously and blocks distance between the live part, adopt post insulator to be built with a pipe bus at the cable outlet two ends, this pipe bus and spare phase cable termination are arranged in juxtaposition, connect by flexible conductor, this pipe bus and working cable terminal are arranged in parallel, and the outlet of main transformer high-pressure side adopts overhead wire to be connected with the working cable terminal.
[0005]By taking the high-tension cable arrangement with quick spare phase, can greatly shorten the nonscheduled down time that causes because of outlet cable fault.Simultaneously, this arrangement has been considered the band electrical distance, can overhaul failure cable during unit operation.To a high voltage fault cable check fully, the projects such as reparation, withstand voltage test may need a week even longer time, and adopt quick spare phase arrangement, just can finish the work of spare phase cable replacement failure cable in several hours.For 1 600MW unit, take the 0.394 yuan/kWh of stake electrovalence of Liaoning Area as example, 1 hour energy output of every increase can bring 23.64 ten thousand yuan income.Therefore reduce the nonscheduled down time that the high-tension cable fault causes, still all have high economic worth and social value for the electricity consumption client for electricity power enterprise.
Description of drawings
Fig. 1 is the high-tension cable outlet floor plan schematic diagram with quick spare phase;
Fig. 2 is the high-tension cable outlet transformer side sectional schematic diagram with the spare phase cable termination;
Fig. 3 is the high-tension cable outlet power distribution equipment side section schematic diagram with the spare phase cable termination.
Embodiment
With reference to Fig. 1, set up two frameworks 1 in transformer side and cable termination side, transformer 2, lightning arrester 3, working cable terminal 4, spare phase cable termination 5, pipe bus 6 and post insulator 7 become row to arrange successively, and high-tension cable 8 adopts and is arranged in juxtaposition.Spare phase cable termination 5 and working cable terminal 4 levels and vertical direction distance all are not less than intersects not the nothing of interruption maintenance simultaneously and blocks distance between the live part, the distance of spare phase cable termination 5 and pipe bus 6 and working cable terminal 4 by not simultaneously interruption maintenance consider.For making things convenient for each phase outlet to be connected with electric phase cable terminal 5 for subsequent use, set up pipe bus 6 with post insulator 7, pipe bus 6 adopts flexible conductor to be connected with spare phase cable termination 5.Each opposite position installs the connection gold utensil in advance on the pipe bus.
[0008]With reference to Fig. 2, the HV Terminal of transformer 2, lightning arrester 3, working cable terminal 4 adopt aerial condutor to connect.In the time of any phase cable fault, after the shutdown, the flexible conductor of fault phase taken apart at working cable terminal 4 places be transferred on the pipe bus 6, realize the replacement of this side high-tension cable.
[0009]With reference to Fig. 3, the other end of high-tension cable adopts the design same with transformer side, be provided with equally spare phase cable termination 5, the facilities such as pipe bus 6, working cable terminal 4 and lightning arrester 3, when any phase cable fault, the flexible conductor of fault phase taken apart at working cable terminal 4 places be transferred on the pipe bus 6, realize the replacement of this side high-tension cable, thereby realize the replacement of whole failure cable.Because cable termination has been considered not simultaneously interruption maintenance in distance, and the high-tension cable metal sheath takes to prevent the overvoltage measure, be not more than 50V at normal operation period metal outer jacket induced voltage peak, so failure cable can overhaul during unit operation, overhauling can become the work phase after complete again during unit maintenance.
Claims (1)
1. a power plant high-tension cable outlet arranges quick spare phase arrangement, high-tension cable adopts tunnel or raceway groove to lay, whenever return back out line A is set, B, C three addition spare phase cables, cable adopts and is arranged in juxtaposition, it is characterized in that: the spare phase cable leaves binding post, the spare phase cable termination is installed at the two ends of spare phase cable, spare phase cable termination and working cable terminal level and vertical direction distance all are not less than intersects not the nothing of interruption maintenance simultaneously and blocks distance between the live part, adopt post insulator to be built with a pipe bus at the cable outlet two ends, this pipe bus and spare phase cable termination are arranged in juxtaposition, connect by flexible conductor, this pipe bus and working cable terminal are arranged in parallel, and the outlet of main transformer high-pressure side adopts overhead wire to be connected with the working cable terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120395032 CN202678731U (en) | 2011-10-17 | 2011-10-17 | Quick spare phase layout structure for setting high-voltage cable outgoing line of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120395032 CN202678731U (en) | 2011-10-17 | 2011-10-17 | Quick spare phase layout structure for setting high-voltage cable outgoing line of power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202678731U true CN202678731U (en) | 2013-01-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120395032 Expired - Fee Related CN202678731U (en) | 2011-10-17 | 2011-10-17 | Quick spare phase layout structure for setting high-voltage cable outgoing line of power station |
Country Status (1)
| Country | Link |
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| CN (1) | CN202678731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412060A (en) * | 2018-12-13 | 2019-03-01 | 国网浙江省电力有限公司 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
-
2011
- 2011-10-17 CN CN 201120395032 patent/CN202678731U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412060A (en) * | 2018-12-13 | 2019-03-01 | 国网浙江省电力有限公司 | A kind of flexible direct current converter station quick-switching spare phase transformer arrangement structure and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP NORTHEAST Free format text: FORMER NAME: NORTHEASTERN ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP03 | Change of name, title or address |
Address after: 130021 Jilin City, Changchun province people's street, No. 4368 Patentee after: Co., Ltd of Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation Address before: 130021 Northeast Power Design Institute, No. 4368 Renmin Street, Jilin, Changchun Patentee before: Northeastern Electric Power Design Institute, China Power Engineering Consulting Group Corporation |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20201017 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |