中文说明：
首先介绍了辐射状配电网三相潮流计算方法，对几种常用的配电网潮流计算方法进行了对比分析，着重介绍了配电网潮流计算中常用的前推回代法的基本原理，并利用Matlab仿真软件编写了相应的潮流计算程序，通过33母线系统对计算程序进行了仿真验证。然后介绍了含弱环网的配电网潮流计算的处理方法，编写了相应的仿真计算程序，并通过算例仿真予以验证。接着介绍了分布式电源并网的几种接口模型以及分布式电源在潮流计算中的数学模型，分析了在潮流计算过程中PQ、PV、PI节点的处理方法，特别是对PV节点的处理方法进行了详细的介绍。最后针对不同分布式电源并网的状况分为四种方案进行了仿真测试，验证了本文所编写的潮流计算方法在处理计及分布式电源的配电网三相潮流的正确性。
English Description：
Firstly introduces radial distribution network power flow calculation method, three-phase power flow calculation of several common methods through the contrast analysis of power flow calculation are introduced the basic principle of the commonly used method of power generation, and the corresponding flow calculation using Matlab simulation software to write program, through 33 busbar system for the simulation calculation program.Then introduced including weak ring network power flow calculation method, write the corresponding simulation program, and simulation verified by an example.Then this paper introduces the distributed power grid of several interface model and mathematical model for distributed power flow calculation in the process of power flow calculation were analyzed in the PQ, PV, PI node processing method, especially for processing method has carried on the detailed introduction of PV nodes.Finally, according to different conditions in the distributed power grid is divided into four kinds of schemes are simulated test, this article written flow calculation method was verified in the treatment of the meter and the correctness of the distributed power distribution network of three-phase current.