电力系统三种谐波检测方法比较研究

A Study on the Comparison of Three Harmonic Armonic Dete Cting Methods in the Power System

谐波检测方法众多,每种方法有其各自特点及应用范围,因此了解各种谐波检测方法的优缺点及其适用场合对拟制谐波是非常重要的。就目前广泛应用的基于瞬时无功功率理论的p-q法、ip-iq法和同步检测法以及基于正弦函数正交特性法的三种谐波电流检测方法的基本原理进行了分析,通过Matlab仿真比较了各自的优缺点及适用场合,为有效拟制谐波提供理论及实际指导。分析及仿真表明,有效利用各种谐波检测方法的特点进行谐波拟制是非常有效、实用的。

At present, there＇re many harmonic detecting methods with each one having its own different characteristics and applicable range. So it is very important to understand the advantages and disadvantages of various harmonic detecting methods and their applicable occasions for governing harmonic. The article analyzes the principle of three widely applied detect- ing methods, including p-q and ip-iq methods based on instanta- neous reactive power theory and synchronous detecting method as well as the method based on sine function orthogonal proper- ty. The article also compares the advantages and disadvantages as well as applicable occasions of each method by Matlab simu- lation, providing theory and practice instruction for governing harmonic effectively. Analysis and simulation show that it is very effective and practical to govern harmonic by using the characteristics of various harmonic methods.