直流配电网络运行优化研究  

Research on operational optimization of DC distribution network

作　　者：冯俊杰 张晓辉[2] 范学强 张志飞 闫鹏达 付佳斌 郭兴 FENG Junjie;ZHANG Xiaohui;FAN Xueqiang;ZHANG Zhifei;YAN Pengda;FU Jiabin;GUO Xing(State Grid Maintenance Co.of SEPC,Taiyuan 030006;Key Lab of Power Electronics forEnergy Conservation and Motor Drive of Hebei Province,Yanshan University,Qinghuangdao 066004,China)

机构地区：[1]国网山西省电力公司检修分公司,山西太原030006 [2]河北省电力电子节能与传动控制重点实验室(燕山大学),河北秦皇岛066004

出　　处：《电力科学与工程》2018年第7期15-20,共6页Electric Power Science and Engineering

基　　金：国家自然科学基金资助项目(61374098);河北省高等学校科学技术研究重点项目(ZD2016049)

摘　　要：能源危机、环境问题以及直流负荷比例的增大推动了直流配电网的发展,电力电子器件的灵活可控性使得直流配电网的供电特性有别于传统交流配网,直流配电网络运行优化问题的研究当结合其特殊性。本文全面总结了直流配电网中分布式电源、储能系统以及交直流(AC/DC)换流站以及负荷等端口的输出模型,然后以这些输出特性为基础对直流配电网进行网络分析,进而在直流配电网络分析的基础上建立以网络损耗最小为目标的优化模型,优化模型以联络线功率限值、节点电压限值、各端口输出特性限值为约束条件。案例分析表明所提出的直流配电网络分析方法和优化模型是可行的,且可以从实时运行层面达到新能源最高效地被利用。Energy crisis, environmental issues and the increasing load demands promote the development of the DC distribution networks. Flexible controllability of power electronic devices makes DC power distribution grid different from the traditional distribution network in many ways.Research on controllable DC network is supposed to combine with its unique characteristics. In this paper,a comprehensive summary of the output models of different ports including the distributed resources,energy storage systems,AC/DC converter station and load ports,is provided,and then based on these output characteristics,a network analysis towards the DC distribution network is carried out. Based on that,an optimization model whose objective is to maximize new energy consumptive capacity and minimize the transmission line loss,is established. The control variables of the proposed model are the parameters of the port control strategies. Through a case study,it can befound that the proposed DC distribution network analysis method and optimization model are feasible,and can realize the highest of new energy utilization in the real-time operation.

关 键 词：直流配电网 端口建模 网络分析 运行优化 新能源利用 

分 类 号：TM71[电气工程—电力系统及自动化]