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| Content Provider | IET Digital Library |
|---|---|
| Author | Feng, Huo Jing, Nan Qiming, Ye Yeming, Ma |
| Abstract | 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. |
| Starting Page | 2089 |
| Ending Page | 2092 |
| Page Count | 4 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8720 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-24 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | A.c. Transmission Air Gap Connector Discharge Characteristic Curves Discharge Voltage Gradient Distance 2.9 M Distance 6.5 M Distance 6.7 M Distance 7.2 M Double-circuit UHV AC Power Transmission Line System Electrode High-voltage Electrode Insulation Coordination Insulator Inverse V-string Inverse V-type Insulator Tower Air-gaps Configuration Lightning Impulse Lightning Protection Lightning Protection Air-gap Configurations Overvoltage Protection Phase Air-gap Configurations Poles And Towers Power Frequency Voltage Power Line Supports Power System Protection Power Transmission Line Power Transmission Protection Protection Apparatus Time 1000.0 Mus Tower Air-gap Discharge Characteristic Tower Frame Discharge Testing UHV AC Double-circuit Line UHV AC Double-circuit Tower Wavefront Switching Impulse Voltage |
| Content Type | Text |
| Resource Type | Article |
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