基于对称分量坐标的配电网谐波潮流计算模型

在对称分量解耦-补偿理论基础上对各种电力元件建立了谐波潮流计算时的模型,提出了基波-谐波部分解耦的潮流算法;建立了变压器三序模型,可以处理变压器的大多数联接形式;不但建立了三相不对称线路在对称分量坐标下的解耦-补偿模型,而且对三相不对称负荷在谐波潮流计算时的处理做了深入的研究,建立了实际可行的模型.该模型的建立为配电网谐波潮流部分解耦算法的实现奠定了基础.与性能良好的PQ解耦法结合,形成了实用的电力系统三相谐波潮流计算程序.

Distribution Harmonic Power Flow Models Based on Symmetrical Component Coordinate System

In this paper,a partly decoupled method dealing with harmonic network is developed,which based on the harmonic power flow models of power elements established by symmetrical component coordinate system.Transformer is modeled as three sequence values and can deal with most of the transformer connection types.This paper builts the decoupling compensation models of the asymmetrical three phase line and also gives a practical models of the asymmetrical load.The built models establish a firm foundation for harmonic power flow algorithm to be realized in distribution systems.Then a practically three phase harmonic flow program is brought up by the incorporation of the methods above with the conventional P Q decoupling load flow algorithm.