Distance protection performance during simultaneous faults
作者:
V.Cook,
期刊:
Proceedings of the Institution of Electrical Engineers
(IET Available online 1977)
卷期:
Volume 124,
issue 2
页码: 141-146
年代: 1977
DOI:10.1049/piee.1977.0025
出版商: IEE
数据来源: IET
摘要:
The paper considers the performance of both unswitched and switched distance protection schemes using polarised-mho relays on systems subjected to simultaneous faults. The disturbances considered are flashoverfaults to earth, cross-country earth faults and open-conductor plus earth faults on a double-circuit 132 kV transmission system. Consideration is also given to protection performance for double earth faults separatedby a star-delta transformer. Differences in protection philosophies of British and Continental relay manufacturers are highlighted and a comparison is given for switched schemes employing overcurrent starter units.
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