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220kV不接地变压器中性点绝缘保护研究 被引量:1

Study on Neutral Point Protection without Grounding for 220 kV Transformer
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摘要 电力系统内一部分220 kV变压器的中性点不接地,运行时中性点会受到大气过电压和工频过电压的作用,中性点绝缘需要加以保护。针对采用无间隙金属氧化物避雷器(MOA)与棒间隙并联保护变压器中性点的方式进行了研究,并验证了该保护方式的可行性。
出处 《东北电力技术》 2009年第9期33-35,共3页 Northeast Electric Power Technology
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