基于网络矩阵的交直流混合配电网潮流计算  

Power flow calculation of an AC-DC hybrid distribution network based on a network matrix

作　　者：金国彬 石超[1] 李国庆[1] 潘狄 刘座铭 JIN Guobin;SHI Chao;LI Guoqing;PAN Di;LIU Zuoming(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132000,China;State Grid Jilin Electric Power Company Research Institute,Changchun 130000,China)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132000 [2]国网吉林省电力公司研究院,吉林长春130000

出　　处：《电力系统保护与控制》2020年第24期52-61,共10页Power System Protection and Control

基　　金：国家电网公司总部科技项目资助(5102-201999343A-0-0-00)。

摘　　要：为了准确分析含有分布式可再生能源及具有发-用-储一体化新型柔性负荷的复杂大系统的潮流分布,针对具有离散性、动态性、非线性、多目标性和不确定性等特点的现代城市配电网,给出一种基于网络矩阵的交直流混合配电网潮流计算方法。首先,根据PWM调制原理给出电压源转换器(VSC)的稳态潮流模型。然后,通过二进制描述的网络矩阵,建立交直流混合配电网拓扑结构的潮流计算模型。进而,针对不同控制策略修改雅可比矩阵,并基于牛顿拉夫逊法求解潮流模型。最后给出了两个算例,针对该方法与PSCAD仿真的结果进行比较分析,验证了所提的潮流计算模型的正确性、灵活性和收敛性。It is important to accurately analyze the power flow distribution of complex large-scale systems containing distributed renewable energy and a new flexible load with integrated generation-use-storage.Considering modern urban power distribution networks with characteristics of discreteness,dynamics,non-linearity,multi-objectiveness,and uncertainty,a power flow calculation method of an AC-DC hybrid distribution network based on a network matrix is presented.First,a steady-state power flow model of a Voltage Source Converter(VSC)is given according to the PWM modulation principle.Secondly,based on a binary described network matrix,the power flow calculation model of the AC-DC hybrid distribution network topology is established.Further,by modifying the Jacobian matrix for different control strategies the power flow model is solved based on Newton-Raphson method.Finally,two examples are given,and the results of PSCAD simulation are used to make a comparative analysis,which verifies the correctness,flexibility and convergence of the proposed power flow calculation model.

关 键 词：交直流混合配电网 控制策略 网络矩阵 潮流计算 雅可比矩阵 

分 类 号：TM744[电气工程—电力系统及自动化] TM721.3