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发明公开
CN110429575A 一种可控型金属氧化物避雷器及过电压控制方法 无效 - 撤回

一种可控型金属氧化物避雷器及过电压控制方法
摘要：
本发明公开了一种可控型金属氧化物避雷器及过电压控制方法，所述避雷器包括：串联连接的避雷器固定单元和避雷器可控单元，与所述避雷器固定单元并联的第一电阻，与所述避雷器可控单元并联的第二电阻，以及与是避雷器可控单元并联的控制单元；过电压控制方法包括：在受到冲击电压后，所述可控型金属氧化物避雷器接收动作命令，所述电力电子开关合闸，电流依次流经所述第一电阻和避雷器固定单元组成的并联支路、电感和电力电子开关；一段时间后，旁通断路器合闸；再一段时间后，电力电子开关的触发脉冲停发，电子电子开关断开，电流依次流经第一电阻和避雷器固定单元组成的并联支路、电感和旁通断路器，将冲击电压的电流导向大地。
摘要（英）：

The invention discloses a controllable metal oxide lightning arrester and an overvoltage control method. The lightning arrester comprises a lightning arrester fixing unit and a lightning arrester controllable unit connected in series, a first resistor connected in parallel with the arrester fixing unit, a second resistor connected in parallel with the lightning arrester controllable unit and a control unit connected in parallel with the lightning arrester controllable unit. The overvoltage control method comprises steps: after receiving surge voltage, the controllable metal oxide lightning arrester receives an action command, a power electronic switch is closed, and current flows through a parallel branch formed by the first resistor and the lightning arrester fixing unit, an inductor andthe power electronic switch; after a period of time, a bypass circuit breaker is closed; and after a period of time, trigger pulses of the power electronic switch are stopped, the power electronic switch is cut off, current flows through a parallel branch formed by the first resistor and the lightning arrester fixing unit, an inductor and the bypass circuit breaker; and the current of the surge voltage is guided to the earth.

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