Open‐phase temporary overvoltage before and after an intermediate subsation accessing a long distance transmission line
| Autor: | Wen Xishan, Lan Lei, Lu Hailiang, Chen Xiaoyue, He Zeyu, Wu Huashi, Wang Yu |
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| Rok vydání: | 2020 |
| Předmět: |
TK1001-1841
Materials science Distribution or transmission of electric power business.industry Electrical engineering Phase (waves) Energy Engineering and Power Technology TK3001-3521 Production of electric energy or power. Powerplants. Central stations Control and Systems Engineering Overvoltage Transmission line Electrical and Electronic Engineering business |
| Zdroj: | IET Generation, Transmission & Distribution, Vol 15, Iss 4, Pp 694-703 (2021) |
| ISSN: | 1751-8695 1751-8687 |
| DOI: | 10.1049/gtd2.12052 |
| Popis: | In transmission lines, shunt‐reactors are commonly applied to counteract the “Ferranti effect.” However, in highly compensated lines, hazardous overvoltage may occur during unbalanced open‐phase conditions. In addition, when a new substation is put into operation, π circuit can be selected by accessing an existing transmission line and the original shunt‐reactor configuration is maintained. Severe overvoltage may occur on the shunt‐reactor side of the newly installed transmission line. In this study, we analysed the effects of compensation, neutral‐reactor, and system frequency on open‐phase overvoltage. The maximum deviation of system frequency is |
| Databáze: | OpenAIRE |
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