Research On The Cooperation Problems And The Solutions Of The Breaker Anti-jump Circuit

Jump of breaker is one of the most serious failure, and poses great threats to the safety of euipment and the power grid. The anti-jump circuits usually used in power system are the series anti-jump circuit in operating box and the parallel anti-jump circuit in local control Panel in China. However, the design requirement in all standard s is only described as "the series anti-jump circuit in operating box and the parallel anti-jump circuit in local control Panel are permitted only one circui". In operation, because of the undefined design standard, there are many problems caused by the cooperation of anti-jump circuit. In this paper, based on the theory of breaker closing contorl circuit and anti-jump circuit, combined with the problems taken place in operation, the defects of anti-circuit have beed analyzed. Becaus e the small-scale of the series anti-jump circuit in operating box, the parallel anti-jump circuit must be used first, and there are several cooperated problems as the parallel anti-jump circuit used. Then the solved ways have been researched,such as the Normally closed auxiliary contact of breaker should be put in series of the closing monitoring circuit, the breaker closing control circuit should be choosen the split-phase control circuit, and the self-perpetuating current should confirm the self-perpetuating circuit cut reliably when the self-perpetuating circuit and the anti-jump circuit in local control panel have been put into series, at last, the development of the breaker control circuit in the future has been introduced. The conclusion in this paper would benefit the standardization design of the breaker control circuit.