电网谐波放大与抑制仿真研究

文章介绍了低压电网谐波放大机理，并根据某厂电网实际情况，对电网电压及电流谐波放大进行了电路仿真研究。研究了电网谐波放大抑制对策。特别对电力电容器的串联电抗器的选择方法上作了较为详尽的讨论。提出了按电容支路串联谐振频率点选择电抗值的方案。针对不同频率谐波源、多电容器投切、三角形接法电容器情况进行了电路仿真，给出了相应情况下谐波放大抑制的结论。结论说明了按电容支路串联谐振频率点选择电抗值的方法可操作性和该方法物理意义的直观性。

The Simulation Approach of Harmonics Magnifying Controlling in Power System

The principle of harmonics magnifying in low voltage network are introduced in this paper.From one factory power network data,the circuit simulation of voltage and current harmonics magnifying are carry out. The controlling methods of harmonics magnifying are studied.In order to dispose harmonics magnifying,the reactor is used in power capacitor circuit.The reactor value choosing problems are particularly discussed. The reactor value choosing method of capacitor and reactor circuit resonance frequency point in series is put forward. From different frequency harmonics sources,multi capacitor throw and triangle connecting capacitors circuits the simulations are carry out. The simulation results are given . The method's feasibility and transpicuous physics content are explained in the simulation results.