线性电流注入法计算电力系统谐波潮流

Power System Harmonic Distribution Study——A Practice of Current Injection Method

电力系统谐波潮流计算,已发展出了几种算法,各种算法均有优越性及局限,但与基波潮流计算相比,每种算法都必须处理更为大量的数据、更为复杂的网络。本文用一种简单的算法——线性电流注入法,对舟山21节点交直流电力系统的谐波潮流进行了计算,计算是在实测数据的基础上进行的,并将计算结果与实测数据进行了比较。对该方法的误差来源,进行了初步分析。对谐波潮流计算中网络的化简,通过分析,提出了简化的条件。指出了化简并非在所有情况下都是合理而可行的。

For the aim of harmonic distribution solution, several methods have been derived in recent years, each having certain merits and demerits. As compared with normal power flow problem, it is obvious that the computation of eath method must be involved in more data and more complicated network. In this paper, a linearized method is employed to calculate the harmonic distribution in the power system of Zhoushan, Zejiang province. The computation is based on values measured practically in this system, and the results are checked with them, too. Several causes that may result in errors are studied. In the end, an example is given to show that certain constraint premises should be checked if a given system has to be simplified.