To ensure the power system safe, reliable and economy operation, it requires that temporary overvoltages can be monitor and analysis research.

为了保证电力系统的安全、可靠、经济运行，迫切需要对暂态过电压进行监测与分析研究。

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Paper covers temporary overvoltages, second arc current, switching overvoltage, major parameters of MOA and insulation level of UHV AC apparatus.

主要内容包括：工频暂时过电压，潜供电流，操作过电压，金属氧化物避雷器主要参数，特高压电气设备的绝缘水平等。

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