| ZnO压敏电阻老化机理的研究进展 |
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| 引用本文： | 刘俊,何金良,胡军,龙望成.ZnO压敏电阻老化机理的研究进展[J].电工电能新技术,2010,29(3). |
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| 作者姓名： | 刘俊 何金良 胡军 龙望成 |
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| 作者单位： | 清华大学电机系电力系统及发电设备控制和仿真国家重点实验室,北京,100084 |
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| 摘 要： | ZnO压敏电阻作为避雷器的关键元件在限制电力系统过电压方面具有极为重要的作用,直接决定电力系统的过电压水平和设备的绝缘水平。然而其在承受长期工作电压或短时冲击电流作用时不可避免地会产生老化现象。本文总结了国内外学者对于ZnO压敏电阻老化机理的不同观点及最新研究进展,分析了其老化机理,并讨论了提高ZnO压敏电阻稳定性的方法。
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| 关 键 词： | ZnO压敏电阻 老化机理 离子迁移 稳定性 |
Research progress of degradation mechanism of ZnO varistors |
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| LIU Jun,HE Jin-liang,HU Jun,LONG Wang-cheng.Research progress of degradation mechanism of ZnO varistors[J].Advanced Technology of Electrical Engineering and Energy,2010,29(3). |
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| Authors: | LIU Jun HE Jin-liang HU Jun LONG Wang-cheng |
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| Affiliation: | LIU Jun,HE Jin-liang,HU Jun,LONG Wang-cheng(State Key Laboratory of Control , Simulation of Power System , Generation Equipment,Department of Electrical Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | ZnO varistors played an important role in suppressing overvoltage of power systems,which directly determines the overvoltage level of power systems and the insulation level of apparatus.However,it is inevitable that the electrical property of ZnO varistor degrades as it is under long-term voltage stress or short-term impulse current stress.In this paper,different viewpoints and the latest development on the degradation mechanism of ZnO varistors proposed by domestic and abroad researchers in literatures wer... |
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| Keywords: | ZnO varistors degradation mechanism ion migration stability |
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