摘要
介绍了一些主要国家及我国目前所采用的配电网中性点接地方式,总结了近年来国内外20 kV配电网中性点接地方式的发展趋势;分析了三种主流中性点接地方式的主要技术特点和适用范围及研究的20 kV配电网中性点经消弧线圈接地方式与经小电阻接地方式各自电容电流的不同适用范围。结合浙江省雷害严重的实际情况,对20 kV配电网的中性点接地方式提出了具体建议。
The neutral grounding modes of distribution network in some main countries are discussed and the trends of neutral grounding in 20 kV distribution network in recent years are summarized.Then the main technical characteristics and the suitable scope of three neutral grounding modes are analyzed.The scope of capacitance currents in neutral point through arc suppression coil and through low resistance are studied in this paper.Finally,detailed recommendations of the neutral grounding in 20 kV distribution network are put forward through a real lightning situation in Zhejiang Province.
出处
《能源工程》
2010年第6期1-9,共9页
Energy Engineering
关键词
20KV配电网
中性点
接地方式
20kV distribution network
neutral
grouding methods
