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AP1000是第三代先进压水堆核电厂,该厂对设备的可靠性要求比较高,核岛中压开关柜的可靠性是整个核岛安全供电的基本保障。中压开关柜如果发生电弧故障可能会产生非常大的破坏作用,首先介绍了AP1000核岛中压开关柜的特点以及开关柜内产生电弧故障的原因,电弧故障的形成过程,以及常见的弧光保护措施。介绍了弧光保护在中压开关设备中的重要性,通过分析快速灭弧装置的工作原理以及结构特点,说明为了满足AP1000对中压开关柜高可靠性要
AP1000 is the third generation of advanced pressurized water reactor nuclear power plant, the plant on the reliability of equipment is relatively high, the reliability of nuclear island medium voltage switchgear is the basic guarantee of safe power supply for the entire nuclear island. Medium voltage switchgear in the event of an arc fault may have a very damaging effect, first introduced the characteristics of the AP1000 nuclear island medium voltage switchgear and switchgear arcing fault causes, the formation of arc fault, and the common arc protection Measures. The importance of arc protection in medium voltage switchgear is introduced. By analyzing the working principle and structural characteristics of quick quenching device, it is shown that in order to meet the high reliability of medium voltage switchgear