实际应用中的谐波改善方法

Harmonics Improving Methods in Practical Application

通过对实际工程中谐波电流的测量,分析了电容器和系统变压器在谐波环境发生谐振的条件及并联谐振、串联谐振产生的原因。简述谐波的存在对整个电网系统和设备造成的危害,从理论上分析采用调谐滤波柜可以很好地抑制谐波电流,保证所有用电设备都有良好的供电质量。

Through measurement of harmonic current in the practical engineering, the conditions for capacitors and system transformers to resonate in the harmonic ambient and the causes for the generation of parallel resonance and serial resonance are analyzed. The hazard to the whole electric network system and the equipment caused by the presence of the harmonics is briefly described. Theoretical analyses shows that harmonic current can be well rejected by adopting tuning filtering cabinet, thereby the good quality of power supply to all the electric consumers can be ensured.