摘要
提出了波形畸变系统电参数的测量算法原理及其微机电参数测量装置的设计方法。该测量算法采用复序列快速富里叶变换 ( FFT)原理 ,计算各次谐波的电压、电流、有功功率、无功功率和功率因数。
The principle of an algorithm for measuring electrical parameters of power system with distorted waveform and the design method of a microcomputer based electrical parameter measuring device using this algorithm is presented in this paper. By means of complex sequence FFT, the algorithm can be used to calculate the voltage, current, active power, reactor power and power factor of any order of specified harmonics. In this device the automatic tracking of sampling frequency to fundamental frequency is realized by phase locking frequency multiplier. The relative error of the measurement accuracy is less than 0.5% for current and voltage, and less than 1% for active power, reactive power and power factor.
出处
《电网技术》
EI
CSCD
北大核心
2000年第3期59-61,共3页
Power System Technology
基金
山东省教委科研基金
