Scholarlink

<p>To address the problem of DC voltage deviation in the voltage source converter based multi-terminal high voltage direct current transmission (VSC-MTDC) system with the DC voltage droop control strategy, an additional DC voltage control strategy is presented in this paper. The integral of DC voltage deviation is incorporated into DC voltage droop control, and the coordinated control characteristics of additional DC voltage control strategy are analyzed thoroughly. Considering further the influence of the impedance of the DC network line, the reference value of DC voltage is dynamically adjusted by adding DC voltage compensation to realize DC voltage adjustment without static deviation. The strategy does not require the communication between converter stations, and the control structure is simple. Finally, a five-terminal VSC-MTDC system is constructed using PSCAD/EMTDC to simulate the proposed control strategy. The simulation results show that, in terms of the improvement effect, the proposed DC voltage control strategy exceeds the traditional improved control strategy by over 90%.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Research on Voltage Droop Control Strategy with Additional DC Voltage for VSC-MTDC without DC Voltage Static Deviation

  • 期刊论文

  • 发表日期：

    2025年6月25日

查看全文
  • Congshan Li,
  • Hang Wei,
  • Ping He,
  • Jiale Fan

摘要

To address the problem of DC voltage deviation in the voltage source converter based multi-terminal high voltage direct current transmission (VSC-MTDC) system with the DC voltage droop control strategy, an additional DC voltage control strategy is presented in this paper. The integral of DC voltage deviation is incorporated into DC voltage droop control, and the coordinated control characteristics of additional DC voltage control strategy are analyzed thoroughly. Considering further the influence of the impedance of the DC network line, the reference value of DC voltage is dynamically adjusted by adding DC voltage compensation to realize DC voltage adjustment without static deviation. The strategy does not require the communication between converter stations, and the control structure is simple. Finally, a five-terminal VSC-MTDC system is constructed using PSCAD/EMTDC to simulate the proposed control strategy. The simulation results show that, in terms of the improvement effect, the proposed DC voltage control strategy exceeds the traditional improved control strategy by over 90%.