摘要
分析了矿井配电网特点及单相接地故障选线与定位难点,提出了一种基于中频信号注入式矿井配电网单相接地故障选线与定位新方法。该方法通过安装在矿井配电网线路上的监测装置监测到故障发生时刻,启动中频信号注入装置向配电网系统注入中频信号,在配电网线路参数已知的情况下,通过分析工频故障信号和中频故障信号来实现故障选线与定位。通过Matlab/Simulink建模、仿真分析和相应的数据分析计算,验证了该方法的可行性和正确性。
Characteristics of mine distribution network and difficulties of single-phase grounding fault line selection and location were analyzed.A new type of single-phase grounding fault line selection and location method for mine distribution network was proposed which was based on intermediate frequency signal injecting type.Through monitoring device of mine distribution network to detect fault occurrence time,intermediate frequency signal injecting device starts to inject intermediate frequency signal at the same time.Fault line selection and fault location are realized by analyzing power frequency fault signal and the intermediate frequency fault signal when distribution network parameters are known.Through Matlab/Simulink modeling,simulation analysis and corresponding data analysis and calculation,feasibility and correctness of the method are verified.
出处
《工矿自动化》
北大核心
2016年第11期45-50,共6页
Journal Of Mine Automation
基金
江苏省普通高校研究生科研创新计划资助项目(SJLX15_0697)
国家级大学生创新训练计划资助项目(201610290026)
关键词
矿井配电网
单相接地故障
故障选线
故障定位
中频信号注入
mine distribution network
single-phase grounding fault
fault line selection
fault location
intermediate frequency signal
