Scholarlink

<p>To achieve carbon neutrality, we must overcome the challenges associated with the long-distance and large-capacity transmission of renewable energy. Direct-current transmission system has advantages in terms of high voltage and high controllability over the alternating-current transmission system. First-generation line-commutated-converter-based high-voltage direct-current systems risk commutation failures that threaten the safety of power grid, whereas second-generation voltage-source-converter systems entail higher carbon emissions, lower robustness, and higher power loss. We propose a next-generation high-power hybrid commutated converter that accesses renewable power, eliminating commutation failures through its hybrid operation modes of forced and recovery-enhanced commutation, with a hybrid device connection topology. We investigate the commutation principles and present the system design. Experimental results from a 120 kV/360 MW prototype demonstrate the efficacy of this high-power converter, which has been deployed in the Lingbao super-high-voltage direct-current project in Henan, China, and Mengxi ultra-high-voltage direct-current project in Inner Mongolia, China.</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

High-power hybrid commutated converter for carbon-neutral power transmission

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年7月22日

查看全文
  • Chaoqun Xu,
  • Zongze Wang,
  • Zhanqing Yu,
  • Yu Dong,
  • Jinpeng Wu,
  • Biao Zhao,
  • Lu Qu,
  • Rong Zeng

摘要

To achieve carbon neutrality, we must overcome the challenges associated with the long-distance and large-capacity transmission of renewable energy. Direct-current transmission system has advantages in terms of high voltage and high controllability over the alternating-current transmission system. First-generation line-commutated-converter-based high-voltage direct-current systems risk commutation failures that threaten the safety of power grid, whereas second-generation voltage-source-converter systems entail higher carbon emissions, lower robustness, and higher power loss. We propose a next-generation high-power hybrid commutated converter that accesses renewable power, eliminating commutation failures through its hybrid operation modes of forced and recovery-enhanced commutation, with a hybrid device connection topology. We investigate the commutation principles and present the system design. Experimental results from a 120 kV/360 MW prototype demonstrate the efficacy of this high-power converter, which has been deployed in the Lingbao super-high-voltage direct-current project in Henan, China, and Mengxi ultra-high-voltage direct-current project in Inner Mongolia, China.