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核电站在反应堆停堆换料期间 ,根据计划安排许多电源配电盘 (主要是核岛 )需要停电检修 ,而这些配电盘的一些负荷 (如通风空调系统、照明系统、消防系统、仪表监视系统、吊装系统、保安系统、辐射防护监测系统等 )要求持续供电 ,如采取常规的临时敷设电缆来满足供电要求 ,除增加工作量、错误接线外 ,有可能降低机组的安全性能 ,如法国有些核电站采用的再供电系统 ,不但能保证持续供电负荷的要求 ,还具有切换速度快、操作简便、安全可靠 ,减少大修周期 ,值得我们借鉴。
During the reactor shutdown and refueling period, many power distribution panels (mainly nuclear islands) were planned and scheduled to be black-out for maintenance. Some of the load on these distribution panels (such as ventilation and air conditioning systems, lighting systems, fire protection systems, instrumentation and monitoring systems, hoisting systems, Security systems, radiation protection monitoring systems, etc.) require continuous power supply, such as the use of conventional temporary cable to meet the power supply requirements, in addition to increasing the workload, wrong wiring, it may reduce the safety performance of units such as France, some nuclear power plants using the power supply System, not only to ensure the continuous power load requirements, but also has the switching speed, easy to operate, safe and reliable, reduce the overhaul cycle, it is worth learning from.