一种基于柔性装置的配电网网架结构设计与研究  

Design and Research of Distribution Network Structure Based on Flexible Device

作　　者：肖文浩 彭卉 刘兴栋 赵理 张程柯 XIAO Wenhao;PENG Hui;LIU Xingdong;ZHAO Li;ZHANG Chengke(State Grid Chongqing District Power Supply Company,Chongqing 400010,China;State Grid Chongqing Electric Power Company,Chongqing 400010,China)

机构地区：[1]国网重庆市区供电公司,重庆400010 [2]国网重庆市电力公司,重庆400010

出　　处：《电力电容器与无功补偿》2022年第5期109-117,共9页Power Capacitor & Reactive Power Compensation

基　　金：重庆市科技项目(基于数据共享的配电网网格化规划技术研究与应用,2020渝电科技13#)。

摘　　要：为了吸纳光伏、电动汽车、储能电池等分布式能源和实现配电网功率的优化分配,提出了一种基于电力电子柔性装置的交直流智能配电网网架结构。提出的结构采用电流源换流器(current source converter,CSC)连接不同交流配电网和交流分布式能源,采用电流源换流器-电压源换流器(voltage source converter,VSC)混合结构的DC/DC换流器实现分布式直流能源有效并网。分析了CSC和混合换流器的数学模型,提出了一种适用于交直流智能配电网网架结构的综合控制策略,实现了网架结构内所有换流器的单位功率因数运行。在Matlab/Simulink仿真软件中搭建了基于柔性装置的交直流智能配电网仿真模型。仿真结果表明提出的控制策略能够实现所有换流器的单位功率因数运行。For absorbing such distribution energy as photovolitaic,electric vehicle,energy storage battery and achieving optimization distribution of power of distribution network,a kind of AC and DC intelligent distribution network structure based on the power electronic flexible device is proposed.The proposed structure adopts current source converter(CSC)to connect different AC distribution network and AC distribution energy.The DC-DC converter with current source converter-voltage source converter hybrid structure is adopted to achieve effective grid connection of distribution DC energy.The mathematical model of CSC and hybrid converter are analyzed.A comprehensive control strategy which is suitable for network structure of AC-DC intelligent distribution network is proposed and the operation of unit power factor of all converters in the network structure is achieved.The simulation model AC-DC intelligent distribution network based on the flexible device is set up in Matlab/Simulink simulation software.The simulation results show that the proposed control strategy can be able to achieve operation of unit power factor of all converter.

关 键 词：交直流配电网网架结构 电流源换流器 混合DC/DC换流器 单位功率因数 

分 类 号：TM721.3[电气工程—电力系统及自动化]