Hunan Electric Power ›› 2022, Vol. 42 ›› Issue (6): 90-93.doi: 10.3969/j.issn.1008-0198.2022.06.015

• Experience and Discussion • Previous Articles     Next Articles

Research on Power-Tapping Method from Ground Wire for Online Monitoring Equivalent of Substation Incoming Section

ZHAO Shihua1, XIE Yanbin2, HUANG Zimin3, BI Maoqiang3   

  1. 1. State Grid Hunan Electric Power Corporation Research Institute, Changsha 410007, China;
    2. Shaoyang University, Shaoyang 422099, China;
    3. State Grid Hengyang Power Supply Company,Hengyang 421009, China;
    4. Chongqing University of Technolog, Chongqing 400054, China
  • Received:2022-06-23 Revised:2022-07-12 Online:2022-12-25 Published:2023-01-13

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Abstract: Online monitoring of substation incoming section can monitor the running state of transmission line. Aiming at online powering for the monitoring device of the incoming section, the method of energy-drawing from ground-wire, power, effects of concerned factors, and overvoltage of the device are analyzed with EMTP-ATP program. The results show that the power level of the energy-drawing from ground wire is rather small, but usually enough to meet the requirements of the online monitoring devices for power. On this basis, combining the power level, lightning strike overvoltage and engineering feasibility of the energy-drawing approaches, the basic principle for selecting the approach is determined. The research results could provides reference for the on-spot powering for online monitoring device of incoming section of the substation.

Key words: online monitoring, incoming section of substation, energy-drawing from ground wire

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