Title :
Fundamentals for the Determination of EHV Switching-Surge Ratings
Author :
Hertig, G.E. ; Ingman, R.W.
Author_Institution :
I-T-E Circuit Breaker Company, Greensburg, Pa.
fDate :
3/1/1965 12:00:00 AM
Abstract :
This paper develops a theoretical method which leads to an efficient practical one and provides a mathematical basis for establishing EHV switching-surge ratings. Detailed analyses of the major factors involved in EHV testing are presented. Application of statistical and probability mathematics to the test results indicates the necessity of a rigorous evaluation of the test data and the need for defining the environmental differences between laboratories. Statements of rating include references to error factors and the degree of confidence that a particular series of test results have a certain probability of occurrence.
Keywords :
Equations; Flashover; Industrial relations; Insulation testing; Laboratories; Mining industry; Probability; Sampling methods; Surges; Voltage;
Journal_Title :
Power Apparatus and Systems, IEEE Transactions on
DOI :
10.1109/TPAS.1965.4766184