含分布式电源配电网潮流计算与分析.doc

本科生毕业设计（论文） 毕业设计（论文） 题 目 含分布式电源的配电网潮流计算与分析 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 30 PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT 29 西安理工大学本科生毕业设计（论文） PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT I 含分布式电源的配电网潮流计算与分析 摘 要 电力系统迅速发展，分布式电源的应用也越来越多。分布式电源在并入电网以后，会对配电网的电压、网络损耗等产生一定的影响，所以对分布式电源并网后的潮流计算研究显得尤为重要。 本文中，首先对分布式电源的定义和国内外的形势做了介绍。对于用到的数学算法进行了介绍，然后总结了常用的潮流算法。针对PQ算法用于配电网的不足提出了改进的方法（BX法），并且在此基础上加入了二范数。对于5、9、14以及33节点的网络进行了算例分析，在5、9节点的网络中改善的算法能够使PQ算法很好的收敛，但是在14、33节点的网络中效果不是很明显，该算法还有待提高。 总的来说BX是能够改进PQ算法的，但是还存在不足，需要对这个算法进行改善，一定会改善PQ算法的，使该算法能够完全的适用于所有的配电网。 关键词：分布式电源、PQ算法、配电网、BX法 Abstract With rapid development of the power system, the application of distributed generator supply become ordinary. Power grid with distributed generator will influence the voltage ,network loss of the power distribution network.So the research of power grid with distributed generator ‘s power flow calculation is particularly important. In this article, the definition of distributed generator supply and the situation of both at home and abroad is produced firstly. Used for mathematical algorithm are introduced, and then summarizes the common trend of the algorithm Aiming at the shortcomings of the PQ algorithm used in distribution network is put forward to improve the method, the method (BX). For 5, 9, 14 and 33 nodes of network has carried on the example analysis, in 5 and 9 nodes in the network to improve the algorithm can make the PQ good convergence, but at 14, 33 nodes in the network effect is not obvious, so the algorithm needs to be improved. The BX method is able to perfect the PQ algorithm, but there are insufficient, it is necessary to improve the algorithm, I think BX will improve PQ algorithm, the algorithm can be completely applied to all of distribution network. Keywords: distributed generator, the PQ algorithm, the BX method ,power grid 目 录 TOC \o 1-3 \h \u HYPERLINK \l _Toc17482 第一章 绪论 PAGEREF _Toc17482 1 HYPERLINK \l _Toc2363 1.1 设计