摘要
在500kV自耦变中性点由直接接地改成经小电抗接地的方式后,对其中性点、主变入口处上出现的过电压进行了详细全面的分析,并在此基础上对中性点电抗器的小电抗取值、主变中性点和主变入口处的过电压保护和绝缘配合问题进行了探讨。
The general analysis is focused on insulation level of the autotransformer neutral and the entrance of the autotrans-former after small reactance grounding. In addition, the impedance value of the small reactance, the protection of the neutral and autotransformer entrance, and insulation coordination is particular discussed.
出处
《电气应用》
北大核心
2005年第5期24-27,共4页
Electrotechnical Application