本文先对真空开关各种操作过电压产生过程进行理论分析，为过电压分析及保护仿真研究提供了理论依据。
At first, theoretical analyses are discussed about various VCB switching overvoltages 'generating process. This can provide theoretical basis for overvoltages 'analysis and protection research.
针对试验过程中可能产生的瞬时过电压和故障过电压分别建立了数学和仿真模型，分析了过电压的产生机理、危害及特点。
The mathematics and simulation model for transient and fault overvoltage are established and their generation mechanisms, harm and characteristic are analyzed.
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