Research on a novel STATCOM based on hybrid cascaded multi-level converter and its coordination control strategy

The Journal of Engineering

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[1] Power Economic Research Institute of State Grid Fujian Electric Power Company, Fu Zhou, People's Republic of China;University of Electronic Science and Technology of China, Cheng Du, People's Republic of China;

关键词: static VAr compensators;    voltage-source convertors;    bridge circuits;    network topology;    voltage 35.0 kV;    PSCAD/EMTDC;    WSC;    HCMC-STATCOM simulation model;    static synchronous compensator;    coordinated control strategy;    control system;    H-bridge converter;    two-level converter;    coordination control strategy;    hybrid cascaded multilevel converter;   

DOI  :  10.1049/joe.2018.8629

来源: publisher

【 摘 要 】

A novel static synchronous compensator (STATCOM) based on hybrid cascaded multi-level converter (HCMC) is presented in this study, i.e HCMC-STATCOM, which combines the advantages of the traditional two-level converter and cascaded H-bridge converter. However, the topology and control system are relatively complex. It is difficult to coordinate the two key parts in steady operation. This study firstly introduces topology and working principle of the HCMC-STATCOM. Moreover then, the DC voltage of the two-level converter and the number of H-bridge sub-modules in WSC are optimised. In order to achieve the coordinated control of two key parts, a control strategy is proposed to achieve the coordination and synchronisation between the two parts of the HCMC-STATCOM. Finally the 35 kV/ ± 100 Mvar HCMC-STATCOM simulation model is built by using power systems computer aided design/electromagnetic transients including DC (PSCAD/EMTDC), the results show that the effectiveness of the coordinated control strategy and the accuracy of the theoretical analysis.

【 授权许可】

CC BY