摘要
加汉宁窗谐波分析法和高阶正弦拟合法是介损角测量的两种有效算法,对两种算法的分析和比较有利于它们在实际中的应用。本文首先介绍了两种算法的原理,分析了它们的优缺点,通过仿真给出了信号频率变化情况下两种算法计算所得介损角误差受采样时间影响及其计算速度,通过对所得结果的比较和分析得出了以下结论:信号频率在正常范围内波动时两种算法能达到很高的精确度,但前者对采样时间长度要求较高、计算量较小;后者对采样时间长度要求不高,计算量较大。
Hanning windowed interpolation harmonic analysis algorithm and high-order sine fitting algorithm are the two effective algorithms for dielectric loss angle measurement. For generalization the two algorithms, analysis and comparison of the two algorithms must be done. In this paper, principles of the two algorithms are introduced, merit and shortcoming of them is analyzed, dielectric loss angle influenced by sampling time when signal frequency derivation is calculated by the two algorithms, in the meantime, calculation time is given, those indicate that the two algorithms are high accuracy even if signal frequency defivate from 50Hz, but the former has high requirement for sampling time, and has little calculation quantity; the latter do not has high requirement for sampling time, but has large calculation quantity.
出处
《电测与仪表》
北大核心
2007年第9期14-16,55,共4页
Electrical Measurement & Instrumentation
关键词
介损角
汉宁窗
高阶正弦拟合法
采样时间
计算量
dielectric loss angle
Hanning window
high-order sine fitting algorithm
samplingtime
calculation quantity
