Performance of gas-insulated substations and associated grounding networks during fault and transient conditions
Conference
·
OSTI ID:389985
- Korea Industrial Safety Corp., Inchon (Korea, Republic of)
- Safe Engineering Services and Technologies Ltd., Montreal, Quebec (Canada)
This paper discusses in detail the electric modeling of the overhead tubular enclosures of a 500 kV circuit breaker in a gas insulated substation. Under both steady-state and phase-to-ground fault conditions, the current distribution on the enclosure as well as the spatial distribution of the scalar potentials and electromagnetic fields near the circuit breaker are computed at different frequencies for various wire-mesh models of the breaker enclosure. The selected frequencies are representative of those present in the frequency spectrum of typical lightning transient currents. The different models of the breaker enclosure are obtained by varying the number of conductors used to represent the enclosure. For a given enclosure diameter and length, the minimum number of conductors required to obtain satisfactory current distribution and electromagnetic field results at different frequencies are determined.
- OSTI ID:
- 389985
- Report Number(s):
- CONF-960426--
- Country of Publication:
- United States
- Language:
- English
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