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Abstract:
在中性点不接地系统中,单相接地故障与铁磁谐振时有发生,二者的外在表现特征非常相似,难以区分.本文分析了单相接地故障与铁磁谐振电压、电流特征,提出了利用HHT频率检测及信号注入相结合的识别方法.HHT频率检测法实现对分频和高频谐振故障的检测,利用H桥型逆变器注入电流信号实现对基频谐振故障的检测,避免了将铁磁谐振故障误判断为单相接地.仿真结果验证该方法能够有效识别谐振状态与单相接地故障.
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电气技术
ISSN: 1673-3800
CN: 11-5255/TM
Year: 2015
Issue: 12
Page: 31-35,51
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count: -1
Chinese Cited Count:
30 Days PV: 3
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