主动配电网三相解耦潮流算法

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摘要随着主动配电网技术迅速发展,分布式电源（DG）规模化接入,传统配电网潮流算法难以满足主动配电网潮流计算的要求。针对这一情况,提出一种能高效处理多类型DG规模化接入和环网的主动配电网三相解耦潮流算法。该算法基于序分量法和不对称线路三序解耦-补偿模型,结合主动配电网的特点和道路-回路分析法,详细推导PQ、PQ(V)、PV和PI节点类型DG规模化并网和无功补偿设备接入的潮流模型,采用三相解耦及并行计算,极大地提高算法计算速度和效率,节省内存空间,实现高效的主动配电网三相解耦潮流计算。通过IEEE 37、69和123母线测试系统验证了该算法的有效性、良好的收敛性以及较强的处理多类型DG规模化接入和环网的能力,且算法性能远优于传统算法。

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	杨雄
	卫志农
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	杨永标
	陈璐

关键词 ：主动配电网, 三相解耦, 潮流计算, 环网, 分布式电源, 三相不平衡, 无功补偿

Abstract：With the development of active distribution network technologies and the connection of large-scale distributed generations (DGs) to active distribution networks, the traditional power flow methods are difficult to meet power flow calculation for active distribution networks. Therefore, in this paper, a three-phase decoupled power flow algorithm for active distribution networks is proposed, which has high efficiency of processing multi-type large-scale DGs and meshed networks. The pro- posed algorithm uses the sequence component analysis approach and the three-sequence decoupling- compensation models of unsymmetrical branches, and combines the special topological structure of active distribution network with the path-loop analysis approach. The power flow models of the large-scale PQ-node, PQ(V)-node, PV-node and PI-node type DGs and the var compensators are derived in detail, and the three-phase decoupled power flow can be parallel calculated with smaller CPU time and less memory space. The results of IEEE 37-bus, 69-bus and 123-bus test systems verify the effectiveness and good convergence of the proposed algorithm. Meanwhile, it is shown that the proposed algorithm has strong ability to process multi-type large-scale DGs and meshed networks, and is superior to the traditional algorithms.

Key words： Active distribution network three-phase decoupled power flow calculation meshed network distributed generation three-phase unbalanced reactive compensation

收稿日期: 2014-01-03 出版日期: 2016-03-03

PACS:

TM743

基金资助:国家电网公司科技项目（智能配用电的技术体系及仿真基础性问题研究）,国家自然科学基金（51277052、51107032和61104045）和江苏省普通高校研究生科研创新计划（CXZZ13_0238）资助项目

通讯作者: 杨雄男,1983年生,博士,工程师,研究方向为新能源技术及配电系统自动化。E-mail: hhyangxiong@126.com

作者简介: 卫志农男,1962年生,博士,教授,博士生导师,研究方向为电力系统运行、分析与控制和输配电系统自动化。E-mail: znwei@hhu.edu.cn

引用本文:

杨雄, 卫志农, 孙国强, 孙永辉, 杨永标, 陈璐. 主动配电网三相解耦潮流算法[J]. 电工技术学报, 2016, 31(2): 186-195. Yang Xiong, Wei Zhinong, Sun Guoqiang, Sun Yonghui, Yang Yongbiao, Chen Lu. Three-Phase Decoupled Power Flow Algorithm for Active Distribution Networks. Transactions of China Electrotechnical Society, 2016, 31(2): 186-195.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I2/186

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