计及分布式电源的配电网前推回代潮流计算_张立梅.pdfVIP

2010 年 8 月 电 工 技 术 学 报 Vol.25 No. 8 第 25 卷第 8 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Aug. 2010 计及分布式电源的配电网前推回代潮流计算 张立梅1,2 唐 巍 1 （1．中国农业大学信息与电气工程学院 北京 100083 2．河北农业大学信息科学与技术学院 保定 071001 ） 摘要 结合前推回代法的特点，分析研究了各种类型分布式电源在前推回代潮流计算中的数 学模型。针对前推回代法对PV 节点和环网失效的问题，提出了依据节点电阻矩阵、节点电抗矩 阵及电压偏差对P 、V 恒定型分布式电源和环网断点功率修正方法，设计了适合于分布式电源和 环网的灵活节点编号方法，给出了改进前推回代潮流算法的执行过程。通过20 节点系统和IEEE90 节点系统的仿真，对所提出算法的适应性、计算速度、收敛性等进行了分析，结果表明本文提出 模型和方法能够快速、方便求解含多电源多类型的配电网潮流。 关键词：分布式电源 潮流计算 前推回代 环网 功率调整 配电网 中图分类号：TM743 ；TM91 Back/Forward Sweep Power Flow Calculation Method of Distribution Networks With DGs Zhang Limei 1,2 Tang Wei 1 （1. China Agricultural University Beijing 100083 China 2. Agricultural University of Hebei Baoding 071001 China ） Abstract Integrated with the characteristics of the back/forward sweep, this paper presents the various models of distributed generators (DGs) adapted to the back/forward sweep method. Considering the limits of the back/forward sweep for solving PV node and meshed network, their power correction equations are put up based on resistance matrix, reactance matrix and mismatch of voltage magnitude, planning the flexible nodal numbering scheme suited for DGs and meshed network, giving the procedure of the improved back/forward sweep algorithm ．Plenty of simulations with 20 buses and IEEE 90 buses system are carried out to illustrate the performance of the proposed method. The results show that the presented method is simple, flexible, reliable and available to solve power flow of radial and meshed distribution network with multi-source