Title :
A 3D calculation method for assessing the voltage distribution across breaks of HV circuit breakers
Author :
Valiquette, Denis ; Landry, Michel ; Roy, Michel ; DO, Xuan-Dai
Author_Institution :
Hydro-Quebec, Varennes, Que., Canada
fDate :
7/1/1999 12:00:00 AM
Abstract :
This paper presents a validated method to calculate the voltage distribution across breaks of HV circuit breakers. The method is based on the use of a software featuring calculation of three-dimensional electric fields and assessment of stray capacitances between breaks and with respect to ground, which significantly affect the voltage distribution across the series breaks. Tests on 5- and 8-break circuit breaker were performed and the test results reveal that the real values measured agree to within 2% with the values calculated by software. A nonintrusive test technique which does not affect the stray capacitances with respect to ground, is also presented
Keywords :
capacitance; circuit breakers; electric fields; voltage distribution; 3D calculation method; 3D electric fields calculation; 5-break circuit breaker; 8-break circuit breaker; HV circuit breakers; grading capacitors; nonintrusive test technique; software; stray capacitances; stray capacitances assessment; three-dimensional electric fields; voltage distribution; Capacitance; Capacitors; Circuit breakers; Circuit testing; Integral equations; Laplace equations; Performance evaluation; Samarium; Software testing; Voltage;
Journal_Title :
Power Delivery, IEEE Transactions on
