港口供配电系统中谐波的危害及防止

Detriments and Prevention of Harmonic Wave of Power Supply and Distribution System in Port

简述港口企业电气设备中典型非线性设备———变压器、变流器、气体放电类照明器具产生谐波的原因 ,分析谐波对供配电系统和用电设备运行造成的危害 ,以及对电力、电能测量准确度的影响。最后提出了设置滤波器、采用Δ -Y11联结组别变压器。

The causes of harmonic wave produced in typical nonlinear electrical equipments such as transformer, current transformer and gas discharging lights in ports are briefly introduced. The detriments of harmonic wave to power supply and distribution system and to power consuming equipments, and the impacts on the accuracy of power and energy measurement are analyzed. In the end, measures of preventing harmonic wave including adopting filter, Δ-Y 11 connection symbol and new type of retifying circuits, etc. are put forward.