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高压电器  2015 

匝间绝缘故障对干式空心电抗器电感参数影响的仿真研究

DOI: 10.13296/j.1001-1609.hva.2015.10.018, PP. 117-121

Keywords: 干式空心电抗器,匝间绝缘,电感,有限元分析法

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Abstract:

干式空心电抗器存在匝间故障时,主要对其电感参数造成影响,准确计算空心电抗器不同位置处故障电感参数变化量,对分析空心电抗器故障位置具有很重要意义。文中分别采用解析法和有限元法计算一个完整电抗器线圈电感参数,确定计算结果的准确性,然后采用有限元法模拟线圈匝间短路,针对不同短路位置,计算线圈电感变化量。结果表明同一故障位置,越靠近外侧对电抗器整体电感参数影响越大;同一层不同故障位置,越靠近中部对电抗器整体电感参数影响越大。通过电路仿真,不同位置处故障,所测波形的衰减频率的不同,验证了电抗器匝间绝缘检测的有效性。

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