混合潮流模型及算法分析  

Power flow model with hybrid single and three phase and algorithm analysis

作　　者：苑开波 罗萍萍 范尊毅 陈波 于苗 YUAN Kaibo;LUO Pingping;FAN Zunyi;CHEN Bo;YU Miao(Electric Power Engineering,Shanghai University of Electric Power,Shanghai 200090,China;Xingtai Power Supply Branch,State Grid Hebei Electric Power Co.,Ltd.,Xingtai 05400,China)

机构地区：[1]上海电力大学电气工程学院,上海200090 [2]国网河北省电力有限公司邢台供电分公司,河北邢台054000

出　　处：《电力科学与技术学报》2020年第6期124-130,共7页Journal of Electric Power Science And Technology

摘　　要：针对现有配电网全三相潮流计算复杂且耗时较多问题,提出一种基于π型接口的混合潮流模型。在混合模型中,三相不对称网络考虑三相模型,而三相对称网络考虑单相模型,通过π型等效接口连接这两部分网络,得到混合潮流模型,并详细给出接口处的节点导纳矩阵、节点注入功率方程及其对雅克比矩阵的影响。通过IEEE算例,在不同三相不平衡程度下与全三相潮流模型对比计算精度和速度,从而验证该文所提混合潮流模型的正确性、优越性。Aiming at the complex and time-consuming problem of the existing three-phase power flow calculation method for distribution network,a hybrid power flow model based onπ-type interfaces is proposed in this paper.In the hybrid model,a three-phase model for three-phase asymmetrical network,and a single-phase model for three-phase symmetrical network are considered separately.Then,the hybrid power flow model is established by connecting the two parts of network through aπ-type equivalent interface.In addition,the node admittance matrix,the node power injection equation of the interface and its influence on Jacobian matrix are obtained.The correctness and superiority of the proposed model is verified by comparing the calculation accuracy and speed of the proposed model and the full three-phase power flow model under different three-phase unbalance conditions based on IEEE standard example.

关 键 词：混合网络 π型等效 不平衡系统 潮流计算 

分 类 号：TM744[电气工程—电力系统及自动化]