Insulation Levels for VEPCO 500-Kv Substation Equipment
- 1 March 1964
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. 83 (3) , 236-241
- https://doi.org/10.1109/TPAS.1964.4765992
Abstract
A detailed study has been made of the Virginia Electric and Power Copmany (VEPCO) 500-kv transmission sytem to determine optimum insulation levels for the substation equipment. Results of this study depend on both economic and technical considerations. For the VEPCO system, a 70% arrester can be used at the generator step-up transformer locations, and a 75% will be required at step-down substations. Adequate impulse and switching surge margins permit a transformer BIL (basic impulse insulation level) of 1,300 kv to be used at all locations. The most practical circuit breaker BIL, consistent with good engineering practice and economy of application, is 1,550 kv.Keywords
This publication has 1 reference indexed in Scilit:
- Application of Arresters for Complete Lightning Protection of SubstationsTransactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1958