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首页> 外文期刊>Electrical engineering in Japan >Insulation Characteristics of GIS under Nonstandard Lightning-Impulse Oscillations: Insulation Characteristics under Single-Frequency Oscillations with Various Frequencies and Damping Ratios
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Insulation Characteristics of GIS under Nonstandard Lightning-Impulse Oscillations: Insulation Characteristics under Single-Frequency Oscillations with Various Frequencies and Damping Ratios

机译：非标准雷电冲击下的GIS绝缘特性：不同频率和阻尼比的单频振荡下的绝缘特性

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摘要

To improve GIS insulation specifications, it is important to recognize the insulation characteristics under oscillatory overvoltage waveforms occurring in the field. This paper describes investigations of insulation characteristics for single-frequency oscillatory waveforms with various frequencies and damping ratios. It was found that minimum breakdown voltages (V{sub}(min)) rose with frequency rising under the same damping condition and V{sub}(min) rose with damping ratio rising under the same frequency condition. From an analysis of actual breakdown voltage characteristics, the probability of breakdown at a valley of oscillation rose with damping increasing. It was found that the insulation characteristics were treated ail-inclusively based on the characteristics of V{sub}(min) for rise time or damping time.
机译：为了提高GIS绝缘规范，重要的是要认识到在现场出现的振荡过电压波形下的绝缘特性。本文介绍了具有不同频率和阻尼比的单频振荡波形的绝缘特性研究。结果发现，在相同的阻尼条件下，最小击穿电压（V {sub}（min））随频率的升高而升高，而在相同的频率条件下，V {sub}（min）的阻尼比随频率的升高而升高。通过对实际击穿电压特性的分析，在振荡谷处击穿的概率随着阻尼的增加而增加。发现绝缘特性基于上升时间或阻尼时间的V {sub}（min）的特性而被全部地处理。

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