基于小波和FFT的煤矿电网谐波测量分析  

Measurement and Analysis of Coal Mine Electrical Network Harmonic Based on Wavelet Transformation & FFT

作　　者：任子晖[1] 石莹[1] 付华科[1] 李伟泺[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221008

出　　处：《煤矿机械》2010年第6期186-188,共3页Coal Mine Machinery

摘　　要：谐波污染在煤矿电网中已日趋突显,通过对多个煤矿电网谐波的测试和数据分析,基本掌握了我国煤矿电网谐波的现状,很多电力设备故障,继电保护装置误动作,电网部分谐振,通信设备干扰甚至煤矿事故都是由谐波引发的。因此只有提供准确的测量数据,才能准确分析谐波污染源及如何治理。总结测量谐波数据的方法,并且把Coiflets小波和傅里叶变换有效地结合,运用到谐波数据处理上,实践表明该方法可行,数据准确可靠。The power harmonic pollution in the mine power system has become more and more serious. through the testing and data analysis of the power harmonic in a number of coal mines , the present situation of the power harmonic in the mine are basically grasped. Nowadays, lots of electrical equipment failure, relay protection device misoperation,power grid resonance ,interference with communications equipment, and even coal mine accidents can be caused by harmonics. Only by providing accurate measurement data can accurately analysis harmonic pollution source and take measures to control it. The method to measure harmonic is summarized, the wavelet and fourier transform coiflets are effectively combined and used to analysis the harmonic data. The practice shows that the method is feasible and accurate.

关 键 词：谐波 测量 Coiflets 小波 傅里叶变换 

分 类 号：TD534[矿业工程—矿山机电]