Semimonthly

ISSN 1000-1026

CN 32-1180/TP

+Advanced Search 中文版
DC/DC Converter with Fault Blocking Capability for HVDC Transmission System
Author:
Affiliation:

School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China

Fund Project:

This work is supported by National Key R&D Program of China (No. 2018YFB0904600) and National Natural Science Foundation of China (No. 51807033).

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
    Abstract:

    As the key equipment for the future DC power grid, the high-voltage and high-capacity DC/DC converter has become the hot research topic in recent years. This paper proposes a hybrid DC/DC converter topology combing thyristors with half-bridge sub-modules. The hybrid DC/DC converter can block the short-circuit faults on the high-voltage and low-voltage sides by latching sub-modules and thyristors, and has the advantages of low cost and high efficiency. The working principle, fault protection mechanism, control strategy, parameter design and economy of the topology are analyzed and demonstrated. Finally, the feasibility of the proposed topology and control strategy are verified by simulation results based on MATLAB/Simulink.

    表 1 本文所提出的拓扑与其他拓扑的对比Table 1 Comparison between the proposed topology and other topologies
    图1 具备故障阻断能力的DC/DC变换器拓扑结构Fig.1 Topology of DC/DC converter with fault blocking capability
    图2 具备故障阻断能力的DC/DC变换器工作原理Fig.2 Working principle of DC/DC converter with fault blocking capability
    图3 P>0时直流高压侧短路故障的电路图Fig.3 Circuit diagram of short-circuit faults on high-voltage side when P>0
    图4 P<0时直流低压侧短路故障的电路图Fig.4 Circuit diagram of short-circuit faults on low-voltage side whenP<0
    图5 具备故障阻断能力的DC/DC变换器控制框图Fig.5 Block diagram of control of DC/DC converter with fault blocking capability
    图 故障判断框图Fig. Block diagram of fault judgment
    图 高压DC/DC变换器拓扑结构图Fig. Topology of HVDC DC/DC converter
    表 2 Table 2
    Reference
    Related
    Cited by
Get Citation

LI Binbin,ZHANG Yujie,ZHANG Shuxin,et al.DC/DC Converter with Fault Blocking Capability for HVDC Transmission System[J].Automation of Electric Power Systems,2020,44(5):53-59.DOI:10.7500/AEPS20190730002

Copy
Share
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:July 30,2019
  • Revised:December 03,2019
  • Adopted:
  • Online: March 08,2020
  • Published: