SUN Peng-ju, LU Hong-ming. Analysis of Grading Capacitor tanδ Expansion for High Voltage Circuit Breaker[J]. High voltageapparatus, 2009, 45(2): 97-98+105.
SUN Peng-ju, LU Hong-ming. Analysis of Grading Capacitor tanδ Expansion for High Voltage Circuit Breaker[J]. High voltageapparatus, 2009, 45(2): 97-98+105.DOI:
This paper analyzes the principle of a grading capacitor in a high voltage circuit breaker
its losses
and the cause of tanδ expansion
giving emphasis on polarization loss and dielectric loss of the dielectric material under alternate voltage.The variation of a grading capacitor tanδ under different field intensities is also analyzed.In addition
a method to suppress tanδ expansion is suggested by reducing ionic contaminations.