一种检测任意次谐波及其序分量的检测新算法

A New Method to Detect Random Harmonic Current and Phase-sequence

传统的谐波检测法大都只能检测出系统中的基波分量,但在电力系统故障检测和继电保护中,往往需要检测出对应于故障的特征次谐波。提出了一种能检测出任意次谐波及其序分量的新方法,该方法能简易的检测出三相系统中任意次谐波,然后运用d-q变换能将其正、负、零序分量分离。理论分析和仿真结果证明了所提出方法的正确性。

Most of the traditional harmonic detection method can only detect the fundamental wave component of the system, while in the power system fault detection and relay protection, the characteristic harmonic current of the fault is often needed to detect. In this paper, a new method is put forward to detect random harmonic current and its phase-sequence. This method can detect random harmonic current in three phase four wire system easily, and its positive, negative, and zero sequence can be separated after using d-q transformation. Theoretical analysis and simulation results Drove the correctness of the nronosed algorithm.