消弧及过电压保护在三峡电源电站和三峡坝区35kV系统中的应用

Application of Arc-extinguishing and Over-voltage Protection Device at the Three Gorges Project Power Service Station and the Three Gorges Dam Area

三峡坝区35kV施工电网是三峡工程的主要施工电源,同时为三峡电站提供重要的厂用电。文中介绍了三峡电源电站及三峡坝区35kV系统消弧及过电压保护装置的原理,分析了该装置在35kV系统中的配置情况、装置动作后的处理过程、实际应用效果以及仍存在的问题。

The 35 kV power grid in the Three Gorges dam area is the main power supply during the construction period, and is important auxiliary power for the Three Gorges power plant. In this paper, the principles and devices of the arc-extinguishing and over-voltage protection in this system are introduced, the process of treatment after the protection action and the practical applications of the devices are analyzed and existing problems, are discussed.