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
李昌林 1沈宗正 1周楦颉 1何才松1
作者信息
- 1. 国网重庆市电力公司璧山供电分公司,重庆 402760
- 折叠
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.
Abstract
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Key words
power distribution network/neutral point earthing methods/fault line selection/high cableization rate/reactance-coupled with small resistance引用本文复制引用
出版年
2024
NETL
NSTL
万方数据