Research on power electronic transformer applied in AC/DC hybrid distribution networks

Yiqun Miao; Jieying Song; Haijun Liu; Zhengang Lu; Shufan Chen; Chun Ding; Tianzhi Cao; Linhai Cai; Yuzhong Gong

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Research on power electronic transformer applied in AC/DC hybrid distribution networks

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The AC/DC hybrid distribution network is one of the trends in distribution network development, which poses great challenges to the traditional distribution transformer. In this paper, a new topology suitable for AC/DC hybrid distribution network is put forward according to the demands of power grid, with advantages of accepting DG and DC loads, while clearing DC fault by blocking the clamping double sub-module (CDSM) of input stage. Then, this paper shows the typical structure of AC/DC distribution network that is hand in hand. Based on the new topology, this paper designs the control and modulation strategies of each stage, where the outer loop controller of input stage is emphasized for its twocontrol mode. At last, the rationality of new topology and the validity of control strategies are verified by the steady and dynamic state simulation. At the same time, the simulation results highlight the role of PET in energy regulation.

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《全球能源互联网（英文版）》 |2018年第4期|396-403|共8页
作者
Yiqun Miao; Jieying Song; Haijun Liu; Zhengang Lu; Shufan Chen; Chun Ding; Tianzhi Cao; Linhai Cai; Yuzhong Gong;
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作者单位

State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, P.R. China;

State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing 102209, P.R. China;

State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing 102209, P.R. China;

State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing 102209, P.R. China;

State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, P.R. China;

State Grid Shanghai Municipal Electric Power Company, Shanghai 200122, P.R. China;

State Grid Jibei Electric Power Company, Beijing 100053, P.R. China;

State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute, Beijing 102209, P.R. China;

Department of Electrical and Computer Engineering, University of Saskatchewan, Saskatoon, SK, Canada;

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Research on power electronic transformer applied in AC/DC hybrid distribution networks

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