Strength Characteristics of Air Gaps Subjected to Interphase Switching Surges
- 1 March 1970
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-89 (3) , 448-452
- https://doi.org/10.1109/tpas.1970.292722
Abstract
The present philosophy in the selection of phase-to- phase clearances has been examined. On the basis of a number of oscillograms of switching surges in an EHV system, some characteristics of the overvoltage stresses between phases that have not been considered by the interphase testing methods adopted up to now are demonstrated. By means of a series of switching impulse laboratory tests, it has been shown that these characteristics of thephase-to- phase overvoltages cannot be overlooked in assessing the dielectric strength of phase-to-phase air-insulated structures of substations.Keywords
This publication has 2 references indexed in Scilit:
- Minimum Phase-to-Phase Electrical Clearances for Substations Based on Switching Surges and Lightning SurgesIEEE Transactions on Power Apparatus and Systems, 1966
- Rationalization of Electrical Clearances for Applications at Extra-High Voltages, 230 Kv to 460/500 KvTransactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1959