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该文简述了民用建筑电气设备中典型非线性设备——变压器、气体放电类照明器具和交流设备产生谐波的原因,分析了谐波对供配电系统及其设备和其他弱电系统运行造成的危害,以及对电力、电能测量准确度的影响。最后提出了设置LC滤波器、有源滤波器,采用D,yn11联结组别变压器,增大TN-S、TN-C、TN-S-C中性线截面以及新型整流电路等抑制谐波的措施。
This paper describes the causes of the harmonics in the typical non-linear equipment-transformers, gas-discharge lighting fixtures and AC equipment used in civil electrical installations, and analyzes the causes of harmonics on the operation of power supply and distribution systems, their equipment and other weak systems Of the harm, as well as the impact on the accuracy of electricity, electricity measurement. At last, some measures to suppress harmonics, such as setting LC filter and active filter, using D, yn11 to connect group transformer, increasing TN-S, TN-C and TN-S-C neutral cross section and new rectification circuit are put forward.