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New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current

Received: 4 November 2019     Published: 12 December 2019
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Abstract

In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the zero potential characteristics of the operating point, a new method based on injection current for zero-potential uninterrupted operation in distribution network is proposed. The Floyd algorithm is used to calculate the shortest electrical distance from the live working point to the substation, and the capacitance value of the ground is measured by the resonant grounding system, and the current value injected further to the neutral point is calculated. By regulating the zero-sequence voltage, the neutral point voltage is equal to the difference between the operating phase line voltage drop and the operating phase power supply voltage, ensuring that the operating point voltage is zero. Finally, based on the PSCAD simulation software, the system model is established. The simulation verifies the feasibility of the proposed method by comparing the voltage curves of the working phase.

Published in Journal of Electrical and Electronic Engineering (Volume 7, Issue 6)
DOI 10.11648/j.jeee.20190706.15
Page(s) 163-169
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Distribution Network, Voltage Control, Floyd Algorithm, Resonant Grounding System, Operating Device

References
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[4] WU Simou, CAI Xiuwen, WANG Hailiang, et al. Planning method and its application of distribution network based on power supply reliability [J], Proceeding of the CSU-EPSA, 2014, 26 (6): 70-75.
[5] Stepanov A M, Fakhrutdinova A N, Mamedov D V, et al. Phase goniometer calibration at observation of meteor tracks [J]. Kazan. Gos. Univ. Uchen. Zap. Ser. Fiz.-Mat. Nauki, 2009, 3 (3): 31–40.
[6] HU Yi, LIU Ka, PENG Yong, et al. Research status and development trend of live working key technology [J], High Voltage Engineering, 2014, 40 (7): 1921-1931.
[7] LI Tianyou. A review of the development of non-service interruption working technology in distribution network [J], DISTRIBUTION & UTILIZATION, 2015, 32 (05): 6-10+21.
[8] Huang Z L, Zhang Q S, Liu C X, et al. The Application Discussion of Virtual Reality Technology in Power Distribution Network Live Working Training [J]. Applied Mechanics & Materials, 2013, 278-280:2152-2155.
[9] DENG Heming, CAI Wei, YU Xin, et al. Methods and safety protection of live working on 66kV transmission lines by aerial device with insulating boom [J], High Voltage Engineering, 2015, 41 (9): 3091-3096.
[10] WANG Jianming, SU Ziming, WANGJian-ming, et al. EMTP simulation calculation of bypass transformer operation in 10 kV distribution network [J], East China Electric Power, 2013, 41 (6): 1241-1245.
[11] YANG Xiaoxiang, MAO Yanping. Protective earthing of the bypass flexible cable for non-lackout working on 10kV distribution network [J], East China Electric Power, 2013 (08): 141-145.
[12] NI Zhijian, WANG Yang, LI Xiaolan, et al. Comparison on several finds of distribution network without power outage [J], NORTHEAST ELECTRIC POWER TECHNOLOGY, 2016 (9): 53-55.
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[14] Qiu Maosheng. Research of live working on l0kV distribution lines in Gansu area cooperation anechanism [D], School of Electric&Electronic Engineering, 2014.
Cite This Article
  • APA Style

    Zhu Liang, Wang Zhenyu, Yang Qi, Xu Li, Guo Hao, et al. (2019). New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current. Journal of Electrical and Electronic Engineering, 7(6), 163-169. https://doi.org/10.11648/j.jeee.20190706.15

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    ACS Style

    Zhu Liang; Wang Zhenyu; Yang Qi; Xu Li; Guo Hao, et al. New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current. J. Electr. Electron. Eng. 2019, 7(6), 163-169. doi: 10.11648/j.jeee.20190706.15

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    AMA Style

    Zhu Liang, Wang Zhenyu, Yang Qi, Xu Li, Guo Hao, et al. New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current. J Electr Electron Eng. 2019;7(6):163-169. doi: 10.11648/j.jeee.20190706.15

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  • @article{10.11648/j.jeee.20190706.15,
      author = {Zhu Liang and Wang Zhenyu and Yang Qi and Xu Li and Guo Hao and Pen Shasha},
      title = {New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current},
      journal = {Journal of Electrical and Electronic Engineering},
      volume = {7},
      number = {6},
      pages = {163-169},
      doi = {10.11648/j.jeee.20190706.15},
      url = {https://doi.org/10.11648/j.jeee.20190706.15},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jeee.20190706.15},
      abstract = {In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the zero potential characteristics of the operating point, a new method based on injection current for zero-potential uninterrupted operation in distribution network is proposed. The Floyd algorithm is used to calculate the shortest electrical distance from the live working point to the substation, and the capacitance value of the ground is measured by the resonant grounding system, and the current value injected further to the neutral point is calculated. By regulating the zero-sequence voltage, the neutral point voltage is equal to the difference between the operating phase line voltage drop and the operating phase power supply voltage, ensuring that the operating point voltage is zero. Finally, based on the PSCAD simulation software, the system model is established. The simulation verifies the feasibility of the proposed method by comparing the voltage curves of the working phase.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - New Method for Zero Potential Non-stop Operation of Distribution Network Based on Injection Current
    AU  - Zhu Liang
    AU  - Wang Zhenyu
    AU  - Yang Qi
    AU  - Xu Li
    AU  - Guo Hao
    AU  - Pen Shasha
    Y1  - 2019/12/12
    PY  - 2019
    N1  - https://doi.org/10.11648/j.jeee.20190706.15
    DO  - 10.11648/j.jeee.20190706.15
    T2  - Journal of Electrical and Electronic Engineering
    JF  - Journal of Electrical and Electronic Engineering
    JO  - Journal of Electrical and Electronic Engineering
    SP  - 163
    EP  - 169
    PB  - Science Publishing Group
    SN  - 2329-1605
    UR  - https://doi.org/10.11648/j.jeee.20190706.15
    AB  - In the case of live working in the distribution network, a live method of live working that satisfies the requirements for personal safety and power supply reliability needs to be studied, because of the serious safety accidents caused by misuse and weak safety awareness. Based on the zero potential characteristics of the operating point, a new method based on injection current for zero-potential uninterrupted operation in distribution network is proposed. The Floyd algorithm is used to calculate the shortest electrical distance from the live working point to the substation, and the capacitance value of the ground is measured by the resonant grounding system, and the current value injected further to the neutral point is calculated. By regulating the zero-sequence voltage, the neutral point voltage is equal to the difference between the operating phase line voltage drop and the operating phase power supply voltage, ensuring that the operating point voltage is zero. Finally, based on the PSCAD simulation software, the system model is established. The simulation verifies the feasibility of the proposed method by comparing the voltage curves of the working phase.
    VL  - 7
    IS  - 6
    ER  - 

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Author Information
  • Hunan transmission Maintenance Company, Changsha, China

  • Hunan transmission Maintenance Company, Changsha, China

  • Hunan transmission Maintenance Company, Changsha, China

  • Hunan transmission Maintenance Company, Changsha, China

  • Hunan transmission Maintenance Company, Changsha, China

  • Hunan transmission Maintenance Company, Changsha, China

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