| 110kV变压器中性点绝缘采用金属氧化物避雷器与棒型间隙并联保护的分析 |
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| 引用本文： | 李明贵.110kV变压器中性点绝缘采用金属氧化物避雷器与棒型间隙并联保护的分析[J].广西电力,2005,28(3):5-9. |
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| 作者姓名： | 李明贵 |
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| 作者单位： | 广西电力试验研究院有限公司,广西,南宁,530023 |
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| 摘 要： | 针对广西电网110kV变压器中性点绝缘改为金属氧化物避雷器(MOA)与棒型间隙并联附加过流保护方式后，其中性点的并联间隙出现误动的情况，通过变压器中性点过电压水平的计算，对各种保护方式进行分析，提出了MOA与棒型间隙并联保护的配合原则。
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| 关 键 词： | 变压器中性点 MOA 棒型间隙 过电压保护 |
| 文章编号： | 1671-8380(2005)03-0005-04 |
| 修稿时间： | 2005年2月28日 |
Analysis about Insulation Protection for Neutral on 110 kV Transformer by MOA in Parallel with Rod-gap |
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| LI Ming-gui.Analysis about Insulation Protection for Neutral on 110 kV Transformer by MOA in Parallel with Rod-gap[J].Guangxi Electric Power,2005,28(3):5-9. |
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| Authors: | LI Ming-gui |
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| Abstract: | After the insulation protection for neutral on 110 kV transformer was changed into MOA(Metal oxide lightning arrester) in parallel with a rod-gap adding overcurrent relay, there had been found misoperation on the rod-gap. Through calculations about overvoltage level of the transformer neutral and analyses about alternative types of protection, the principle of coordination between MOA and rod-gap was recommended. |
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| Keywords: | neutral of transformer MOA rod-gap overvoltage protection |
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