Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line
In order to give out inverse V-type insulator tower air-gaps configuration of double-circuit UHV AC power transmission line, different distance air-gaps from high-voltage electrode to tower frame discharge tests of inverse V-string are carried out. Discharge characteristics curves of power frequency...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2019-04-01
|
| Series: | The Journal of Engineering |
| Subjects: | |
| Online Access: | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8720 |
| _version_ | 1819062269124804608 |
|---|---|
| author | Huo Feng Nan Jing Ye Qiming Ma Yeming |
| author_facet | Huo Feng Nan Jing Ye Qiming Ma Yeming |
| author_sort | Huo Feng |
| collection | DOAJ |
| description | In order to give out inverse V-type insulator tower air-gaps configuration of double-circuit UHV AC power transmission line, different distance air-gaps from high-voltage electrode to tower frame discharge tests of inverse V-string are carried out. Discharge characteristics curves of power frequency voltage, 1000 μs long wave-front switching impulse voltage, and lightning impulse of UHV AC double-circuit tower are obtained. Results show that the 50% discharge voltage gradient of bottom phase air-gaps is higher than middle phase. 1000 μs wave-front switching impulse 50% discharge voltage gradient of bottom phase air-gaps is 4.6% higher than the middle phase. Based on the test results and the characters of operating voltage and overvoltage of UHV AC power transmission system, the UHV AC double-circuit tower inverse V-type insulator air-gaps configuration is proposed. The air-gap configurations of power frequency voltage and switching overvoltage are 2.9 and 6.5 m, and the lightning protection air-gaps are 6.7 and 7.2 m, in mountains and plains. |
| first_indexed | 2024-12-21T14:56:05Z |
| format | Article |
| id | doaj.art-8cdde97b571840eda1db5faf7506271e |
| institution | Directory Open Access Journal |
| issn | 2051-3305 |
| language | English |
| last_indexed | 2024-12-21T14:56:05Z |
| publishDate | 2019-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Journal of Engineering |
| spelling | doaj.art-8cdde97b571840eda1db5faf7506271e2022-12-21T18:59:45ZengWileyThe Journal of Engineering2051-33052019-04-0110.1049/joe.2018.8720JOE.2018.8720Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit lineHuo Feng0Nan Jing1Ye Qiming2Ma Yeming3China Electric Power Research InstituteChina Electric Power Research InstituteChina Electric Power Research InstituteChina Electric Power Research InstituteIn order to give out inverse V-type insulator tower air-gaps configuration of double-circuit UHV AC power transmission line, different distance air-gaps from high-voltage electrode to tower frame discharge tests of inverse V-string are carried out. Discharge characteristics curves of power frequency voltage, 1000 μs long wave-front switching impulse voltage, and lightning impulse of UHV AC double-circuit tower are obtained. Results show that the 50% discharge voltage gradient of bottom phase air-gaps is higher than middle phase. 1000 μs wave-front switching impulse 50% discharge voltage gradient of bottom phase air-gaps is 4.6% higher than the middle phase. Based on the test results and the characters of operating voltage and overvoltage of UHV AC power transmission system, the UHV AC double-circuit tower inverse V-type insulator air-gaps configuration is proposed. The air-gap configurations of power frequency voltage and switching overvoltage are 2.9 and 6.5 m, and the lightning protection air-gaps are 6.7 and 7.2 m, in mountains and plains.https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8720power transmission linespoles and towersinsulatorslightning protectionair gapselectrodesovervoltage protectionpower transmission protectiondistance 7.2 mdistance 6.7 mdistance 6.5 mdistance 2.9 mtime 1000.0 musdischarge voltage gradientUHV AC double-circuit towerlightning impulsewavefront switching impulse voltageinverse V-stringtower air-gap discharge characteristicslightning protection air-gap configurationsphase air-gap configurationsdouble-circuit UHV AC power transmission line systemtower frame discharge testinginsulation coordinationpower frequency voltagedischarge characteristics curveshigh-voltage electrodeinverse V-type insulator tower air-gaps configurationUHV AC double-circuit line |
| spellingShingle | Huo Feng Nan Jing Ye Qiming Ma Yeming Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line The Journal of Engineering power transmission lines poles and towers insulators lightning protection air gaps electrodes overvoltage protection power transmission protection distance 7.2 m distance 6.7 m distance 6.5 m distance 2.9 m time 1000.0 mus discharge voltage gradient UHV AC double-circuit tower lightning impulse wavefront switching impulse voltage inverse V-string tower air-gap discharge characteristics lightning protection air-gap configurations phase air-gap configurations double-circuit UHV AC power transmission line system tower frame discharge testing insulation coordination power frequency voltage discharge characteristics curves high-voltage electrode inverse V-type insulator tower air-gaps configuration UHV AC double-circuit line |
| title | Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line |
| title_full | Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line |
| title_fullStr | Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line |
| title_full_unstemmed | Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line |
| title_short | Tower Air-gaps discharge characteristics and insulation coordination for UHV AC double-circuit line |
| title_sort | tower air gaps discharge characteristics and insulation coordination for uhv ac double circuit line |
| topic | power transmission lines poles and towers insulators lightning protection air gaps electrodes overvoltage protection power transmission protection distance 7.2 m distance 6.7 m distance 6.5 m distance 2.9 m time 1000.0 mus discharge voltage gradient UHV AC double-circuit tower lightning impulse wavefront switching impulse voltage inverse V-string tower air-gap discharge characteristics lightning protection air-gap configurations phase air-gap configurations double-circuit UHV AC power transmission line system tower frame discharge testing insulation coordination power frequency voltage discharge characteristics curves high-voltage electrode inverse V-type insulator tower air-gaps configuration UHV AC double-circuit line |
| url | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8720 |
| work_keys_str_mv | AT huofeng towerairgapsdischargecharacteristicsandinsulationcoordinationforuhvacdoublecircuitline AT nanjing towerairgapsdischargecharacteristicsandinsulationcoordinationforuhvacdoublecircuitline AT yeqiming towerairgapsdischargecharacteristicsandinsulationcoordinationforuhvacdoublecircuitline AT mayeming towerairgapsdischargecharacteristicsandinsulationcoordinationforuhvacdoublecircuitline |