摘要
为了维持系统动态无功平衡,换流站交流断路器需要频繁的投切滤波器组,容易出现击穿燃弧事故,破坏断路器的绝缘能力甚至引发爆炸等恶性事故。由于断路器燃弧故障电流呈现高频振荡衰减特性,振荡持续时间短,无固定稳态周期,无明显零休区间,现有的燃弧故障检测方法难以适用。针对该问题,该文通过分析预击穿阶段和稳态燃弧阶段的电弧电流特性,提出一种基于一阶累加生成和平均偏移度的断路器高频燃弧故障检测方法。仿真分析不同故障条件下算法的正确性和适用性,现场录波数据证实算法的有效性。
To keep balance of reactive power in HVDC substation,Circuit Breaker（CB） in filter branch is switched frequently,which is easy to cause arc fault,the insulating ability of CB can be destroyed,even exploded.Considering CB arc fault belongs to high-frequency transient fault,the duration is short,the arc currents don＇t have fixed steady-state cycles and obvious current zero intervals,the existing arc detection method is not applicable to detect CB arc fault.Aiming at this issue,through analyzing the arc currents of pre-breakdown stage and steady arcing stage,an arc detection method based on first order accumulation and average deviation was proposed in this paper.The correctness and feasibility of simulation results in different situations were analyzed,besides,real recorded data proved the validity of the proposed algorithm.
作者
王宾
魏向向
张国辉
冯迎春
温渤婴
董新洲
WANG Bin;WEI Xiangxiang;ZHANG Guohui;FENG Yingchun;WEN Boying;DONG Xinzhou(State Key Lab of Control and Simulation of Power Systems and Generation Equipments（Department of Electrical Engineering, Tsinghua University）, Haidian District, Beijing 100084, China;College of Information and Electrical Engineering, China Agricultural University, Haidian District, Beijing 100083, China;State Grid Shandong Electric Power Company Electric Power Research Institute, Jinan 250000, Shandong Province, China;State Grid Shandong Electric Power Company Maintenance Company, Jinan 250118, Shandong Province, China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2018年第6期1837-1845,共9页
Proceedings of the CSEE
基金
国家重点研发计划项目(2016YFB0900600)
国家自然科学基金项目(51477084)~~
关键词
交流滤波器
断路器
燃弧故障
平均偏移度
AC filter
circuit breaker
arc fault
average deviation degree
