最小二乘算法在电流保护中的应用分析  

Application Analysis of Least Square Algorithm in Current Protection

作　　者：徐育军 

机构地区：[1]煤炭科学研究总院重庆研究院,重庆400037

出　　处：《煤矿机电》2009年第5期52-54,共3页Colliery Mechanical & Electrical Technology

摘　　要：在煤矿井下高低压开关的微机保护中可用最小二乘算法计算故障电流的基波和谐波分量。分析此算法中系数矩阵对测量误差的影响,并与全波傅氏算法系数对测量误差的影响进行对比,对实现短数据窗的最小二乘算法的难点进行了探讨。Least square algorithm may be adopted in microcomputer-based protection in coal mine to calculate the current values of fundamental and harmonics. Analyzes the influence of the coefficient matrix on the measurement error, and compares with the influence of coefficient in full-wave Fourier algorithm. The difficulties of realizing short data window of least square algorithm are also explored.

关 键 词：微机保护 最小二乘算法 全波傅氏算法 

分 类 号：TM564[电气工程—电器]