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Impact of Conductor Temperature Time–Space Variation on the Power System Operational State

Author

Listed:
  • Yanling Wang

    (School of Mechanical, Electrical and Information Engineering, Shandong University (Weihai), Weihai 264209, China)

  • Yang Mo

    (School of Mechanical, Electrical and Information Engineering, Shandong University (Weihai), Weihai 264209, China)

  • Mingqiang Wang

    (School of Electrical Engineering, Shandong University, Jinan 250061, China)

  • Xiaofeng Zhou

    (Department of Mechanical-Electrical Engineering, Weihai Vocational College, Weihai 264210, China)

  • Likai Liang

    (School of Mechanical, Electrical and Information Engineering, Shandong University (Weihai), Weihai 264209, China)

  • Pei Zhang

    (School of Mechanical, Electrical and Information Engineering, Shandong University (Weihai), Weihai 264209, China)

Abstract

The conductor temperature of an overhead transmission line varies with time and space, which has an important impact on the system operation. In this paper, the conductor temperature is solved iteratively by the CIGRE heat balance equation. The time–space variation of conductor temperature of a 220-kV transmission line is analyzed using real meteorological data from Weihai. Considering the temporal distribution characteristics, the seasonal model of the conductor temperature is given. Considering the spatial distribution, the mean value model, the weight average model, and the segmentation model are established. The system power flow involving the conductor temperature is established based on the relationship between conductor temperature and transmission line parameters. Through the calculation of power flow and the analysis of the maximum power transmission capability, the accuracy of the segmentation model is verified. The results show that the conductor temperature of overhead lines has obvious time–space variation characteristics. It is necessary to consider the time–space variation when analyzing the operation state of power systems.

Suggested Citation

  • Yanling Wang & Yang Mo & Mingqiang Wang & Xiaofeng Zhou & Likai Liang & Pei Zhang, 2018. "Impact of Conductor Temperature Time–Space Variation on the Power System Operational State," Energies, MDPI, vol. 11(4), pages 1-15, March.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:4:p:760-:d:138323
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    Citations

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    Cited by:

    1. Xiansi Lou & Wei Chen & Chuangxin Guo, 2019. "Using the Thermal Inertia of Transmission Lines for Coping with Post-Contingency Overflows," Energies, MDPI, vol. 13(1), pages 1-23, December.
    2. Mirza Sarajlić & Jože Pihler & Nermin Sarajlić & Gorazd Štumberger, 2018. "Identification of the Heat Equation Parameters for Estimation of a Bare Overhead Conductor’s Temperature by the Differential Evolution Algorithm," Energies, MDPI, vol. 11(8), pages 1-17, August.
    3. Adrian Pană & Alexandru Băloi & Florin Molnar-Matei, 2019. "Mathematical Explanations of a Paradox Observed in a HVAC (High Voltage Alternating Current) Untransposed Overhead Line," Energies, MDPI, vol. 12(4), pages 1-17, February.
    4. Jiazheng Lu & Yu Liu & Guoyong Zhang & Bo Li & Lifu He & Jing Luo, 2018. "Partition dynamic threshold monitoring technology of wildfires near overhead transmission lines by satellite," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 94(3), pages 1327-1340, December.

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