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A Cost-Effective DC Circuit Breaker Cooperating with the Converter
编号：7 访问权限：仅限参会人 更新：2022-08-11 11:09:18 浏览：279次 口头报告

报告开始：2022年11月04日 08:30（Asia/Shanghai）

报告时间：20min

所在会场：[E] Power Electronics Technology and Application [OS2] Oral Session 2

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摘要
The hybrid dc circuit breaker (DCCB) is still too expensive to be widely applied. DC inductors are much larger than arm inductors. Thus, the voltage of main breakers should be extremely high to ensure fast dc fault blocking. Besides, metal oxide varistors (MOVs) should absorb the excess energy stored in inductors. In this paper, a new DCCB is proposed. Thanks to the extra diodes providing a path for the line side dc fault current, the main breaker only needs to change the converter side dc fault current, which is much easier, instead of the line side one directly. The converter will absorb the excess energy stored in dc side. Thus, the capacity of the MOV is significantly reduced. Thanks to the cooperation of the converter, the voltage stress of the main breaker is reduced too. In general, the proposed topology provides a more cost-effective solution than the hybrid DCCB.
关键词
HVDC transmission,DCCB,MMC-HVDC
报告人
Xiongfeng Fang
Huazhong University of Science and technology

稿件作者
Xiongfeng Fang Huazhong University of Science and technology
Kai Zhang Huazhong University of Science and Technology
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重要日期

  • 会议日期

    11月03日

    2022

    至

    11月05日

    2022

  • 08月01日 2022

    初稿截稿日期

  • 11月04日 2022

    注册截止日期

  • 11月05日 2022

    报告提交截止日期

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