摘要
针对谐振接地系统中依据稳态分量的故障选线方法失效的问题,从暂态分量角度甄选了零序能量法、小波变换法和增强小波包法进行分析。引入模糊综合选线方法对3种方法进行集成,并运用层次分析法确定3种方法的权重。仿真分析结果表明,零序能量法和增强小波包法的可靠性较好,而小波变换法出现了误判,可靠性较差;模糊综合选线方法没有受到其他错误信号的干扰,给出了正确结论,具有较强的可靠性。
For failure of fault line selection methods based on steady-state component in resonance grounding system,three kinds of methods were analyzed from the perspective of transient component including zero-sequence energy method,wavelet transform method and enhancing wavelet packet method.Fuzzy comprehensive evaluation method was introduced to integrate the three kinds of methods,and AHP method was used to determine weights of the three methods.The simulation conclusion shows that the reliability of zero-sequence energy method and enhancing wavelet packet method are better,but wavelet transform methods has false conclusion,with poor reliability;The fuzzy comprehensive evaluation is not interfered by other error signal,and gives correct conclusion,which has strong reliability.
出处
《工矿自动化》
北大核心
2015年第11期81-84,共4页
Journal Of Mine Automation
基金
湖北省教育厅科学技术研究项目(B2015122)
关键词
谐振接地系统
模糊综合选线方法
故障选线
暂态分量
层次分析法
resonance grounding system
fuzzy comprehensive evaluation method
fault line selection
steady-state component
AHP
