冷冻机软启动导致上级开关跳闸的故障分析与处理

Fault Analysis and Treatment of Upper Switch Tripping Caused by Soft Start of Freezer

针对秦山CANDU机组冷冻机在启机试验过程中发生上级供电开关跳闸的事件,展开了故障分析,确定原因是软启动设置的时间过长不满足系统要求,并提出了软启动参数修改的处理方案。

In view of the event that the upper power supply switch tripped during the start-up test of the freezer of Qinshan CANDU unit,the fault analysis was carried out and reason was that the soft start setting time was too long and did not meet the system requirements.The solution to the modification of soft-start parameters is proposed.