一种不受电压过零点影响的新型频率测量方法  

NEW ALGORITHM AVOIDING VOLTAGE CROSS-ZERO POINT FOR MEASURING THE FREQUENCY

作　　者：索南加乐[1] 葛耀中[1] 王安定[1] 田怀智[1] 阿不力孜[1] 

机构地区：[1]西安交通大学,新疆工学院

出　　处：《西安交通大学学报》1995年第3期84-87,102,共5页Journal of Xi'an Jiaotong University

摘　　要：提出了一种将三点式曲线拟合与多点绝对值和补偿的新型频率测量方法。理论分析及数字仿真表明，该方法不受电压过零点的影响，在任何采样点都具有稳定和可靠的计算精度，且算法自身对谐波有一定的抑制能力。This paper described a new algorithm for measuring frequency.This method is based onthe curve fitting technique with only three points and uses multi-point frequency compensa-ting technique to avoid voltage cross-zero point errors indroduced by harmonic terms are re-duced effectively in the algorithm without filter.Analysis and digital simulation show thatthe method provides a fast,simple and reliable frequency measurement with accuracy.

关 键 词：频率 测量 电力系统运行 

分 类 号：TM935[电气工程—电力电子与电力传动]