面向高电缆化率配电网的中性点接地技术探讨  

Exploration of Neutral Point Grounding Techniques Oriented Towards High Cable Density Distribution Networks

作　　者：李昌林 沈宗正 周楦颉 何才松 LI Changlin;SHEN Zongzheng;ZHOU Xuanjie;HE Caisong(State Grid Chongqing Electric Power Company Bishan Power Supply Branch,Chongqing 402760,China)

机构地区：[1]国网重庆市电力公司璧山供电分公司,重庆402760

出　　处：《通信电源技术》2024年第10期61-63,共3页Telecom Power Technology

摘　　要：随着城镇化的飞速发展,配电网系统的电缆比例不断提高,电缆开始逐渐替代传统的架空线路。然而,现有许多变电站的中性点接地方式仍基于纯架空线路设计,难以适应高电缆化率配电网系统的需求。文章针对配电网中性点接地方式进行了系统研究,详细阐述其类型、特性以及对电力系统的作用。针对高电缆化率配电网,提出中性点接地方式的选择建议,为保障配电网的安全稳定运行提供参考。With the rapid development of urbanization,the proportion of cable applications in power distribution networks has been increasing steadily,and cables are progressively replacing traditional overhead lines.However,many substations’neutral point grounding methods still rely on designs tailored for purely overhead line systems,which fail to adequately address the requirements of high-cable-density distribution networks.This paper conducts a systematic study on the neutral point grounding techniques in power distribution networks,providing detailed descriptions of their types,characteristics,and the pivotal roles they play within electric power systems.In response to the challenges posed by highly cable-dense distribution networks,this paper presents recommendations for selecting suitable neutral point grounding methods,thereby offering guidance to enhance the safety and stability of power distribution network operations.

关 键 词：配电网 中性点接地方式 故障选线 高电缆化率 消弧线圈并联小电阻 

分 类 号：TM862[电气工程—高电压与绝缘技术] TM727