摘要
以城市配电网柔性互联示范工程为背景,首先总结出了未来配电网将呈现交流配电网、直流配电网和微电网深度融合的局面,而直流配电网作为交流配电网和微电网之间的重要部分将得到极大地发展。直流变压器具有高低压两个直流系统的高压隔离、功率的双向控制和直流微电网直流母线电压控制等功能,在直流配电网中具有重要作用。因此主要探讨了基于双有源功率单元(DAB)的双向直流变压器,并设计了一种DAB单元模块拓扑结构和组件参数,最后搭建了基于MATLAB/Simulink的DAB直流变压器仿真模型,验证拓扑结构和组件参数的合理性。实验结果表明,所设计的DAB直流变压器具有较好的动态和静态特性,能够满足示范工程要求。
In the context of the flexible interconnection demonstration project of urban distribution network,the paper first summarizes the situation that the distribution network will present the deep integration of AC distribution network,DC distribution network and micro-grid,and DC distribution network as AC distribution.An important part between the grid and the microgrid will be greatly developed.The DC transformer has the functions of high voltage isolation of high and low voltage two DC systems,bidirectional control of power and DC bus voltage control of DC microgrid,which plays an important role in the DC distribution network.Therefore,the bidirectional DC transformer based on dual active power unit(DAB)is mainly discussed,and a DAB unit module topology and component parameters are designed.Finally,a DAB DC transformer simulation model based on MATLAB/Simulink is built.To verify the rationality of the topology and component parameters.The experimental results show that the designed DAB DC transformer has better dynamic and static characteristics and can meet the requirements of demonstration engineering.
作者
谢百明
谈竹奎
徐玉韬
班国邦
袁旭峰
刘沁莹
Xie Baiming;Tan Zhukui;Xu Yutao;Ban Guobang;Yuan Xufeng;Liu Qinying(Electric Science Research Institute,Guizhou Power Grid Co.,Ltd.,Guiyang 550002,China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology,Huazhong University of Science & Technology,Wuhan 430074,China)
出处
《国外电子测量技术》
2019年第6期86-92,共7页
Foreign Electronic Measurement Technology
关键词
示范工程
未来配电网
直流配电网
直流变压器
双有源功率单元模块
demonstration project
future distribution network
DC distribution network
DC transformer
dual activepower unit module
