基于Z型变压器的交直流混合配电网仿真分析  

Simulation Analysis on Zigzag Transformer-based AC-DC Combined Distribution Network

作　　者：张黎[1] 吴昊[1] 曹磊[1] 李庆民 赵彤[1] 邹亮[1] 

机构地区：[1]山东大学电气工程学院,山东省济南市250061 [2]新能源电力系统国家重点实验室,华北电力大学,北京市102206

出　　处：《电力系统自动化》2014年第2期79-84,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51207084);新能源电力系统国家重点实验室开放课题资助项目(LAPS13017)~~

摘　　要：随着智能电网的快速发展,分布式新能源配电网接入是未来发展的必然趋势。文中提出一种包含Z型变压器和升压斩波电路的新型单导线交直流混合配电网拓扑,以融合交流配电网与直流配电网的优势。Z型变压器因同一相的电压相互抵消而无明显的铁芯饱和现象,可用于实现交流和直流功率的耦合与解耦。升压斩波电路用于实现直流功率的流动,并维持各节点的电压等级。建立了分布式新能源配电网接入新型拓扑的仿真模型,验证了该新型拓扑的可行性。With the rapid development of smart grids,the access of distributed renewable energy to distribution network is now an inevitable trend in the future. A novel integration topology for AC-DC combined distribution network along the same line is proposed,which incorporates a zigzag transformer and a boost chopper to integrate DC power with the existing AC distribution network. The zigzag transformer is utilized to achieve coupling and decoupling of AC and DC power without sensible iron-core saturation due to voltage canceling out on one phase. The boost chopper is used to maintain the DC ratings at each node and achieve DC power flow. A simulation model for the novel topology is set up to prove the feasibility of the proposed topology.

关 键 词：分布式新能源 交直流混合配电网 新型拓扑 Z型变压器 升压斩波电路 铁芯饱和 

分 类 号：TM743[电气工程—电力系统及自动化]