±800 kV直流分压器低能量放电故障分析  

Analysis on Low Energy Discharge Fault Analysis of±800 kV DC Voltage Divider

作　　者：张耀月 ZHANG Yaoyue(ANU College of Business and Economics,Canberra 2601,Australia)

机构地区：[1]澳大利亚国立大学商业与经济学院,澳大利亚堪培拉2601

出　　处：《电力电容器与无功补偿》2025年第1期98-105,共8页Power Capacitor & Reactive Power Compensation

摘　　要：低能量放电是一种间歇性火花放电。特高压直流分压器低能量放电将造成电压突然跌落或者跳变,严重影响电网安全稳定运行。本文分析了±800 kV直流分压器低能量放电现象,利用RTDS仿真试验模拟内部对地短路,通过解体、试验、检测等工作,分析了故障原因,并提出预防措施,为防范和杜绝特高压直流分压器故障和异常提供借鉴,为特高压直流设备和电网安全、稳定运行积累宝贵经验。Low energy discharge is an intermittent spark discharge.Low energy discharge of ultra-high voltage DC voltage divider will cause sudden voltage sag or jumps,seriously affecting safe and stable operation of power grid.In this paper,the low-energy discharge phenomenon of±800kV DC voltage dividers is analyzed,the internal short circuits to ground is simulated by using RTDS simulation test.The cause of the fault is analyzed through such works as disassembly,testing,and detection and preventive measures are proposed,which provide reference for preventing and eliminating faults and abnormalities of ultra-high voltage DC voltage divider and accumulating valuable experience for safe and stable operation of ultra-high voltage DC equipment and power grid.

关 键 词：特高压电网 直流输电 直流设备 直流分压器 低能量放电 

分 类 号：TM7[电气工程—电力系统及自动化]