Improved EHV line switching surge control by application of MO-arrestors and controlled switching
Conference
·
OSTI ID:433831
- ABB High Voltage Technologies Ltd., Zuerich-Oerlikon (Switzerland)
Transmission line switching surges and its limitation by means of metal-oxide (MO) surge arresters and controlled switching are discussed. The benefits of these overvoltage control methods are analyzed based on extensive simulation studies of 550 kV transmission lines. The line length is taken as independent parameter and the degree of shunt-compensation is considered as well. The simulation studies show that MO arresters and controlled switching cope in most cases with the insulation coordination requirements of 550 kV networks, thus eliminating the need of closing resistors.
- OSTI ID:
- 433831
- Report Number(s):
- CONF-951136--; ISBN 0-7803-2981-3
- Country of Publication:
- United States
- Language:
- English
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