【作者】 周书民； 汪志成； 吴仲朗； 何浩华；

【Author】 Shu-min Zhou;Zi-cheng Wang;Zhong-lang Wu;Hao-hua He;East China Institute of Technology;

【机构】 东华理工大学机械与电子工程学院；

【摘要】 针对现行牵引变电所监控设备不能准确判断牵引网线路常见的短路及开路故障,提出了一种基于频域特性分析故障性质的方法。结合了无损线波的反射理论、FFT及6MHz FIR高通滤波,对多组数据进行处理分析,比较两种故障行波信号的波头极性和功率谱特性的不同点,总结出基于频域故障性质分析的方法。该方法适合电气化铁道牵引网故障性质分析判定,并可以辅助单端故障行波测距方法中对初始行波和故障点反射波波头的识别。更多还原

【Abstract】 In the current traction substation monitoring equipment can’t exactly judge traction nets line common short circuit and open-circuit fault,An analysis method of fault properties based on the characteristics of frequency domain was Proposed.Combined with the theory of reflection wave nondestructive line,FFT and 6 MHz FIR high-pass filter,analysis sets of data,to compare the differences of the two fault line wave signal based on wave head polarity and spectrum characteristics,Sums up the analysis method of fault properties based on the frequency domain.This method is suitable for electrified railway traction nets fault properties analysis and judgement,and can assist traveling wave fault single-ended ranging method to the initial traveling wave and fault point of reflection wave head identification.更多还原