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Impact Transient Characteristics and Selection Method of Voltage Transformer Fuse

Author

Listed:
  • Ke Wang

    (Electric Power Research Institute of Yunnan Electric Power Corporation, Yunnan 650217, China)

  • Hongwen Liu

    (Electric Power Research Institute of Yunnan Electric Power Corporation, Yunnan 650217, China)

  • Qing Yang

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Lu Yin

    (State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China)

  • Jisheng Huang

    (Lincang Power Supply Company of Yunnan Electric Power Corporation, Yunnan 677000, China)

Abstract

In a neutral ungrounded system, the high voltage fuses used to protect voltage transformers (VTs) often abnormally blow out, causing unbalanced VT operation. Fuses also fail to blow out in time, resulting in further damage to the VT. This paper reported the results of steady-state current testing, breaking characteristics, X-ray measurements, fuse corona testing, and electromagnetic transient impact testing for VT fuses. This paper comprehensively examines and analyzes the quality and electrical performance of VT fuses and provides new guidance for the use of high voltage fuses in voltage transformers. This paper recommends that 35 and 10 kV systems use fuses rated for a current of 1 A based on a single fuse, which is not easily oxidized and has a wound skeleton composed of an Ag or Ni melt.

Suggested Citation

  • Ke Wang & Hongwen Liu & Qing Yang & Lu Yin & Jisheng Huang, 2019. "Impact Transient Characteristics and Selection Method of Voltage Transformer Fuse," Energies, MDPI, vol. 12(4), pages 1-13, February.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:4:p:737-:d:208436
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    References listed on IDEAS

    as
    1. Zhenyu Li & Licheng Li & Xingliang Jiang & Jianlin Hu & Zhijin Zhang & Wei Zhang, 2016. "Effects of Different Factors on Electrical Equipment UV Corona Discharge Detection," Energies, MDPI, vol. 9(5), pages 1-16, May.
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