非正弦网络的无功特性及无源补偿研究

A Study on the Reactive Power Characteristic and Passive Compensation of Non Sinusoidal Networks

从时域分析角度出发，结合非正弦网络无功功率的频率特性，对非正弦网络无功特性进行分类研究，定义拟电参数，由拟电参数Ｌ和Ｃ的值研究非正弦网络的无功特性，并以此指导非正弦无功功率的无源补偿．

The essence of the study on the non sinusoidal reactive power is to compensate for the reactive power for the improvement of the power factor and efficiency. A new method of reactive power analysis and passive compensation under non sinusoidal conditions is proposed. From the point of view of time domain analysis and in the light of the frequency domain characteristic, the reactive power characteristic of the non sinusoidal networks is classified into two categories with the one of single character and the other of dual character. Accordingly, the quasi inductive, quasi capacitive or total decomposition of the network current is carried out. Then the corresponding quasi electrical parameters, equivalent conductance G , inductance L , capactiance C , are defined. By the symbol of the quasi parameters L, C, the physical significance and the properties of the non sinusoidal reactive power are interpreted and the parallel passive compensation network is selected by the magnitude of L and C so as to give the maximum benefit of the network.