新型消弧装置的研究与设计

Research and Design of Novel Arc Extinguishing Device

在不改变系统运行方式的前提下,利用计算机控制技术和氧化锌非线性电阻限压技术,对电网电压实现不间断的监控,不仅能够实现对由于雷电、操作等原因产生的瞬时过电压进行可靠限制,确保电气设备的安全,而且通过氧化锌非线性电阻和消弧电阻的组合能够可靠消除弧光接地过电压,抑制谐振过电压。

As operation mode of the system is not changed, the computer control technique and the voltage limiting technique using nonlinear resistance of zinc oxide are used to monitor voltage of electric network continuously. It may limit instantaneous overvoltage due to lightning and operation causes, so as to guarantee safety of electric plants. It may also extinguish overvohage due to arc earthing through combination of the nonlinear resistance of zinc oxide with the arc extinguishing resistance, so as to restrain resonant overvoltage.