电力机车冷却风机电机保护用断路器异常跳闸分析及优化

Analysis and Optimization of Abnormal Tripping of Breaker for Motor Protection of Cooling Fan in Electric Locomotive

和谐型电力机车辅助供电冗余过程中出现冷却风机电机保护断路器跳闸。分析试验数据,锁定跳闸原因,提出先完成辅助系统配置,再允许辅助供电系统输出的控制优化方案。最后试验证明优化方案有效。

During the auxiliary power supply redundancy of a Hexie-type electric locomotive,cooling-fan-protective circuit breaker of the motor was tripped.This paper analyzes the test data,determines the causal problem,and proposes a modified control scheme which sequences auxiliary system configuration prior to enacting auxiliary supply system.The test proves the effectiveness of the optimized scheme.