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Bridge arm Fault Location Method for High Voltage Capacitor of DC Filter in HVDC Systems based on Current Characteristics
ID：123 View Protection：ATTENDEE Updated Time：2020-10-15 19:11:35 Hits：768 Oral Presentation

Start Time：2020-11-02 16:15（Asia/Shanghai）

Duration：15min

Session：A Power System » A2Session 2 and Session 7

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Abstract
There are two kinds of methods to locate fault for high voltage capacitor of DC filter in HVDC systems, which include 1) directly observing the appearance state of capacitor, 2) manually measuring the value of capacitor unit. However, they fail to achieve satisfactory efficiency and pose a threat to operators’ safety. Thus, this paper proposes a novel fault location method for high voltage capacitor of DC filter based on current characteristics of direction and amplitude. The direction change characteristics of unbalanced current and the amplitude relationships among the bridge arm branches of high voltage capacitor are analyzed. The degree of current amplitude change of bridge arm branch is defined to locate the position of faulty bridge arm. Performance of the proposed location method for high voltage capacitor of DC filter is evaluated based on time-domain simulation studies in the PSCAD/EMTDC software environment and experimental results are based on a real-time digital simulator.
 
Keywords
DC filter, high voltage capacitor，bridge arm branch current, unbalance current, fault location.
Speaker
Dalin Mu
Southwest Jiaotong University

Submission Author
Dalin Mu Southwest Jiaotong University
Sheng Lin School of Electrical Engineering； Southwest Jiaotong University
Yuqing Lei Southwest Jiaotong University
Gui Fang Southwest Jiaotong University
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Important Date

  • Conference Date

    Nov 02

    2020

    to

    Nov 04

    2020

  • Oct 27 2020

    Draft paper submission deadline

  • Nov 03 2020

    Contribution Submission Deadline

  • Nov 04 2020

    Registration deadline

  • Nov 17 2020

    Final Paper Deadline

Sponsored By
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
Organized By
Huazhong University of Science and Technology
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