10kV高压断路器越级跳闸的故障分析及整改措施

Fault Analysis and Corrective Measures for the Overstep Trip of 10kV High Voltage Circuit Breaker

分析低压出线回路短路造成10 kV高压断路器越级跳闸的原因,并给出了相应的整改措施.除了对断路器整定值及跳闸时间适当调整,保证其选择性分断,还需根据工艺流程对变压器负荷进行分组整合,以减小停电范围,保证生产的顺利进行.

This paper analyzes the reason of overriding trip of 10kV high voltage circuit breaker caused by short circuit of low-voltage outlet circuit,and put forward the corresponding rectification measures.In addition to adjusting the setting value and tripping time of the circuit breaker to ensure the selectivity,the load of the transformer is also grouped and integrated according to the process flow to reduce the power outage range and ensure the smooth progress of production.