The high voltage circuit breaker’s condition messages are of multilayer and multifactor

so a layered evaluation indexs system is built in this paper.An operation condition evaluation model for high voltage circuit breaker

which evaluates the state of every layer and gives a comprehensive assessment of circuit breaker

is established on the basis of the fuzzy comprehensive judgment.A constant weight of every index is firstly determined by the AHP method.Then by introducing the variable weight model based on the balanced function to modify the constant weight

a variable weight is obtained to improve the assessment accuracy.This study would provide a new method for high voltage circuit breaker condition assessment.