| 一起金属氧化物避雷器缺陷数据的分析及预防措施 |
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| 引用本文： | 姚爱明,幸荣霞.一起金属氧化物避雷器缺陷数据的分析及预防措施[J].电瓷避雷器,2011(6):61-64,69. |
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| 作者姓名： | 姚爱明 幸荣霞 |
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| 作者单位： | 浙江省杭州市临安供电局,浙江临安,311300 |
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| 摘 要： | 对一起220 kV线路金属氧化物避雷器(MOA)运行过程中全电流异常增大的原因进行了分析和处理.针对现场MOA内部受潮劣化后,其运行电压下全电流及阻性电流均增大,尤其是阻性电流分量幅度增加更快的特点,对避雷器进行带电检测试验、停电试验和解体检查,证明了红外测温、阻性电流测量可及时准确发现M0A受潮的内部故障.
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| 关 键 词： | 金属氧化物避雷器 带电测试 阻性电流 红外测温 |
Analysis on Defect Data of MOA in an Accident and Precautions |
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| YAO Ai-ming,XING Rong-xia.Analysis on Defect Data of MOA in an Accident and Precautions[J].Insulators and Surge Arresters,2011(6):61-64,69. |
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| Authors: | YAO Ai-ming XING Rong-xia |
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| Affiliation: | (Lin’an Electric Power Supply Company,Lin’an 311300,China) |
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| Abstract: | An example of analysis and management for abnormal full current increase under the operation voltage of 220 kV MOA(metal oxide arresters)is introduced.Through the analysis of MOA internal moisture,the full current and resistance current increase under the operation voltage,especially the resistive current component increase more sharply.Through the live test,off-line test and disassembly inspection to arresters,which shows that infrared thermometry and resistive current measurement can accurately find the internal fault of MOA due to the moisture in time. |
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| Keywords: | metal oxide arrester live test resistive current Infrared thermometry |
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