Title :
Open Breaker Protection of EHV Systems
Author :
Hileman, Andrew R. ; Wagner, Charles L. ; Kisner, Richard B., Jr.
Author_Institution :
Westinghouse Electric Corporation
fDate :
7/1/1969 12:00:00 AM
Abstract :
Although the use of line-entrance lightning arresters provides absolute protection for an open breaker condition, it represents a costly installation. No line entrance protection represents some risk of breaker damage. Line entrance rod gaps offer a compromise between these extremes. This paper discusses the probabilities of failures using these three alternatives and describes a procedure whereby the spacing of the line-entrance gap can be determined. Since this procedure depends on the particular configuration of the gap being used, test data are presented on one particular configuration used on a 345-kV system. Based on these data, recommended gap spacings for 345-and 500-kV systems are developed.
Keywords :
Arresters; Circuit breakers; Circuit testing; Costs; Flashover; Lightning; Power system protection; Surge protection; Switches; System testing;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1969.292499