Tennessee Valley Authority's 500-kY System - Step-Down Substation Design
- 1 January 1966
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-85 (1) , 36-46
- https://doi.org/10.1109/tpas.1966.291518
Abstract
The determining factor, used by the Tennessee Valley Authority, in selecting the insulating system for extra-high-voltage (EHV) substations, is the long-duration switching surge. investment in lines and substations makes outages for maintenance economically undesirable; consequently, TVA has designed its stations so that some changes and maintenance can be performed while the equipment is energized. Employment of vertical reach switches is a TVA design feature, which provides an arrangement whereby mechanical equipment can be used to repair breakers and disconnect switches without outage time. The ring bus switching scheme is applicable except in cases where more than three lines and one bank are likely to be involved; then, the main and transfer scheme is adopted.Keywords
This publication has 3 references indexed in Scilit:
- Switching-Surge Insulation Level of Porcelain Insulator StringsIEEE Transactions on Power Apparatus and Systems, 1964
- Interim Report-Minimum Electrical Clearances ror Substations Based on Switching Surge RequirementsIEEE Transactions on Power Apparatus and Systems, 1963
- Phase-to-Phase Switching Surges on Line EnergizationTransactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems, 1962