基于小波技术的矿用高压电网漏电保护装置的研究  

Research and Application of Leakage Protective System of High Voltage Distribution Networks for Mines Based on Wavelet

作　　者：王念彬[1] 王彦文[1] 高彦[1] 龙飞[1] 

机构地区：[1]中国矿业大学,北京100083

出　　处：《煤矿机械》2010年第3期158-160,共3页Coal Mine Machinery

摘　　要：在分析煤矿高压电网接地故障及现有装置选线原理的基础上,提出了利用小波奇异性检测原理、经小波变换后获取故障时的零序电压和零序电流的大小和极性,实现漏电故障选线。该装置采用TMS320VC33DSP为处理芯片,能较好地满足对大量数据的实时处理,试验表明该装置具有良好的应用前景。On the basis of analyzing the law of ground fault and the principles of the installed device, singularity detection with wavelet is employed to obtain the polarities and magnitudes of the abrupt change of voltage and current caused by the fault, and through comparing the polarities and magnitudes the fault circuit can be determined is presented. The device uses TMS320VC33 DSP as CPU, and can better meet the real-time processing of large amounts of data. Experiment indicates that the device has satisfactory value of application.

关 键 词：小波变换 故障选线 奇异性检测 DSP 

分 类 号：TM86[电气工程—高电压与绝缘技术]