含多类型分布式电源的主动配电网三相动态潮流算法  

Three⁃phase Dynamic Power Flow Algorithm for Active Distribution Networks With Different Types of Distribution Generations

作　　者：刘小恺 范晓龙 房文轩 米夏 安东 LIU Xiaokai;FAN Xiaolong;FANG Wenxuan;MI Xia;AN Dong(Inner Mongolia Electric Power Research Institute,Hohhot 010020,China;State Grid Economic Research Institute of East Inner Mongolia Electric Power Company Limited,Hohhot 010020,China)

机构地区：[1]内蒙古电力科学研究院,内蒙古呼和浩特010020 [2]国网内蒙古东部电力有限公司经济技术研究院,内蒙古呼和浩特010010

出　　处：《山东电力技术》2021年第6期44-49,共6页Shandong Electric Power

基　　金：内蒙古电力公司2018年科技项目“柔性直流技术在低压配电网中的应用研究”(2018-87)。

摘　　要：随着高比例、多类型的分布式电源(Distributed Generations,DG)大量接入,对配电网的运行方式和潮流计算方法提出了新的要求。传统配电网潮流计算方法已不适用于主动配电网运行特点,为解决此问题,提出一种基于序分量的主动配电网三相动态潮流算法。建立电力电子逆变器的三相序分量的稳态潮流模型,并在潮流计算中引入功率缺额分担系数,使不同控制策略的DG参与分担系统的功率缺额,同时给出DG出力越限后的处理方法。通过对蒙西某地区配电网和IEEE33节点配电系统进行仿真,结果表明DG参与分担系统功率缺额后,可以降低网络损耗、提升系统电压水平。从而表明动态潮流算法能够有效处理主动配电网中各类DG共同分担功率缺额的运行方式,更好地模拟主动配电网实际运行情况。With the large⁃scale access of distributed generation(DG)with high proportion and multiple types,new requirements have been put forward for the operation mode and power flow calculation method of DG,and the traditional power flow calculation method is not suitable for active distributed generation.In order to solve this problem,a three⁃phase dynamic power flow algorithm for active distribution network based on sequence component was proposed.The steady power flow model of three⁃phase sequence component of power electronic inverter was established,and the power shortage sharing coefficient was introduced into the power flow calculation,so that DG with different control strategies could share the power shortage of the system,and the treatment method of DG output exceeding the limit was given.Simulations were conducted on distribution network in a region of West Mongolia and IEEE33 power distribution system.The results show that DG can reduce the network loss and improve the system voltage level after sharing the power shortage.Moreover,the dynamic power flow algorithm can effectively deal with the operation mode in which all kinds of DGs share the power shortage,and better simulate the actual operation of the active distribution network.

关 键 词：主动配电网 动态潮流 分布式电源 序分量 分担系数 

分 类 号：TM744[电气工程—电力系统及自动化]