电能质量谐波监测与评估综述

Summary of harmonic monitoring and evaluation

电力系统谐波是评价电能质量的重要指标之一。随着电力电子技术的快速发展,大量非线性设备投入电网运行,使电网产生大量谐波,严重影响电力系统的安全稳定运行,因此,监测并评估谐波干扰强度极其重要。本文首先介绍谐波监测的意义、目的、方法等,然后讨论各项谐波干扰强度的评价指标以评估公共电网谐波、用户接入谐波,最后基于谐波潮流计算,归纳电网中存在多谐波源的干扰叠加问题。

Harmonic is one of the most important indicators for evaluating power quality.With the rapid development of power electronics technology,more and more non-linear equipment are put into operation,which affects the safe and stable operation of the power system seriously.Therefore it is extremely important to monitor and evaluate the intensity of harmonic interference.This paper first introduces harmonic monitoring,then makes some harmonic evaluation.At last,based on the calculation of harmonic power flow,this paper concludes the problems of multiple harmonic sources in the power grid.