浅谈电网谐波危害与消除措施

随着科学技术的发展,工业生产水平和人民生活水平的提高,非线性用电设备在电网中大量投运,造成了电网的谐波分量占的比重越来越大。它不仅增加了电网的供电损耗,而且干扰电网的保护装置与自动化装置的正常运行,造成了这些装置的误动与拒动,直接威胁电网的安全运行。因此,我们对非线性用电设备产生的谐波必须进行治理,使谐波分量不超过国家标准。文中分析了电力系统中谐波的来源及其产生的影响与危害,并总结了相应的消除对策和抑制的方法措施等。

Simple Discussion on the Hazard of Power Network Harmonic and Eliminating Measures

With the development of science and technology and the improvement of industrial production level and people＇s living standard, a large amount of non-linear electrical equipments are put into operation in power grids which results in an increasingly big proportion of power network harmonic in grid. The harmonic not only increases the loss of electricity but also interferes the normal operation of protection equipment and automated equipment of grid which results in the malfunction and failure of operation of grid and directly threat the secure operation of grid. Therefore, the harmonic generated by non-linear electrical equipment must be treated and made its proportion in line with the national standards. The paper analyzes the sources and impact and hazard of power system＇s harmonic and summarizes the corresponding eliminating solutions and restraining measures.