摘要
提出了基于非线性频率特性分析的输电线路状态监测与故障诊断新方法。通过电力载波信号对输电线路进行在线监测,运用非线性频率响应函数对系统固有特性描述的唯一性,建立输电线路不同运行状态的频率响应模式,根据发生故障后传输线频率响应特性的变化,进行故障征兆模式的特征抽取与识别,从而实现输电线路故障的在线监测与诊断。通过对不同故障类型的仿真实验,验证了所提方法的有效性。
A novel method for power transmission line monitoring and fault diagnosis is proposed based on non-linear frequency response analysis. The power line carrier signal has been used for on-line monitoring of power transmission line. As the non-linear frequency response function describes the system inherent characterization, different frequency response patterns corresponding to different operation states of transmission line can be established. Based on the analysis of transmission line characteristics of fault modes, various fault features can be extracted, transmission line. Simulation experiments show thereby achieve online monitoring and fault diagnosis on the effectiveness of the proposed method.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第1期54-60,共7页
Journal of Chongqing University
基金
重庆市自然科学基金资助项目(CSTC2006BB2238)
国家'111'计划项目(B08036)
关键词
非线性频率响应函数
输电线
在线监测
故障诊断
non-linear frequency response function
power transmission line
on-line monitoring
fault diagnosis
