Gapless surge arresters for power systems applications. Volume 3. 500-kV gapless arrester field tests. Final report
A set of three metal oxide 550-kV, station type lightning arresters was installed on the West Point-Braswell 500-kV Line adjacent to a set of conventional gap-type surge arresters which protect a 500-kV, 100-MVAR shunt reactor bank. The unique feature of the new arresters which warrant field tests is that they are completely gapless. Twenty-five sets of tests were made on the metal-oxide arresters during September 22, 1981 to January 4, 1983. These tests consisted principally of recording the arrester current and associated phase-to-neutral 500-kV voltage on an oscillogram. Thirteen tests, occuring at approximately monthly intervals, have been reported. These tests indicate that there are no significant changes in the arrester currents such as would indicate trouble in the arrester. There was one discharge counter operation on the C-phase arrester on January 3, 1983 when lightning caused a C phase-to-ground operation on the Miller 500-kV Line.
- Research Organization:
- Tennessee Valley Authority, Chattanooga (USA)
- OSTI ID:
- 5349586
- Report Number(s):
- EPRI-EL-3166-Vol.3; ON: DE84920081
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of gapless metal oxide surge arresters for 362 kV gas-insulated substations
Design, development and testing of 1200 kV and 550 kV gapless surge arresters