Switching Surge Tests on Simulated and Full-Scale EHV Tower-Insulator Systems
- 1 April 1965
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. 84 (4) , 293-303
- https://doi.org/10.1109/TPAS.1965.4766194
Abstract
Switching surge tests performed on simulated tower-insulator systems representative of possible 345- and 500-kV transmission line designs were performed so that line design parameters could be estimated for a specific value of switching surge overvoltage. Switching surge studies of the Southern California Edison Company (SCE) 500-kV transmission system dictated that the switching surge withstand strength for wet conditions should be 1065 kV. From the design-application curves, the center phase of the SCE 500-kV transmission tower-insulator system was designed to have a 12-foot 8-inch minimum horizontal strike distance and 27 insulators used in a 90-degree V-string configuration. Full-scale tower tests confirmed the switching surge design criteria.Keywords
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