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文章介绍动车组的高压保护控制逻辑和变压器风机高低速控制原理,针对现场出现的风机断路器跳开引起变压器和高压系统保护故障,进行原因分析,并提出了解决措施。
This paper introduces the control logic of high voltage protection of EMU and the principle of high and low speed control of the fan of the EMU. According to the protection fault of the transformer and high voltage system caused by the jump of the fan circuit breaker in the field, the reasons are analyzed and the solutions are proposed.