浅析谐波产生的原因及抑制措施

Analysis on the Cause of Harmonic and Restraining Measures

电力电子技术的应用推动了近代电力系统的发展。但是随着大功率整流器、变频器等设备接入电网,谐波的影响越来越严重,给电网电能质量带来不利的影响,轻则影响系统的运行效率,重则损坏设备以至危害电力系统的安全。针对电力系统谐波危害大、功率因数偏低的问题进行分析,采用FC无功补偿及滤波装置抑制电网谐波,改善电能质量,确保供电安全,并取得显著的节能效果和经济效益。

The application of power electronics technology promotes the development of power system. But with more and more rec- tifiers, inverters and other high power facilities put in power system, the effect of harmonic which impairs the grid power quality be- comes serious. It would influence the operating efficiency, even damage to power facilities to harm to the security of power system. We analyze the problems of harmonic, which causes serious damages in power system, and lower power factor. By using FC reactive com- pensation devices and filter devices, the power quality is improved to ensure the security of power supply, the remarkable power conser- vation and economic benefits are obtained at the same time.