能量最小值法计算因子α对绕组线圈波前时刻提取误差的分析  

The Effect of α on the Accuracy of TDOA Using Energy Minimization Method

作　　者：周雄 彭彦军 陆昕 唐明[1] 孙春树 滕本科 董海亮 文靖 蒋伟 王彤 ZHOU Xiong;PENG Yanjun;LU Xin;TANG Ming;SUN Chunshu;TENG Benke;DONG Hailiang;WEN Jing;JIANG Wei;WANG Tong(Guangxi Power Grid Corp Guilin Power Supply Bureau, Guilin 541002, China)

机构地区：[1]广西电网公司桂林供电局

出　　处：《大电机技术》2019年第4期30-35,共6页Large Electric Machine and Hydraulic Turbine

摘　　要：本文对基于时间差定位(TDOA)算法的能量最小值法进行了深入分析,并在Matlab中仿真验证了能量最小值法估计绕组线圈内脉冲信号的传播时延,实现对绕组线圈故障源定位。进一步仿真分析了能量最小值法中的计算因子α在不同取值下对波前时刻提取准确度的影响,提出α在一定的取值区间,可以提高对波形波前时刻提取的准确度,精确了时间差的估计,从而提高了对绕组线圈匝间短路故障定位的精度。This paper deeply analyzed the energy minimization algorithm based on the TDOA. Simulated in Matlab that the energy minimization method can estimate the propagation delay of the pulse signal in the winding coils and realize the location of the winding coils fault source. Furthermore, the accuracy of the calculation factor α in the energy minimum value method were analyzed, proposing that the value of αin a certain range can enhance the accuracy of extraction for waveform wavefront moments and time estimates, thus improving the winding coils inter-turn short circuit fault location accuracy.

关 键 词：能量最小值法 TDOA定位 时间差估计 匝间短路 故障定位 

分 类 号：TM306[电气工程—电机]