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A Thermal Rating Calculation Approach for Wind Power Grid-Integrated Overhead Lines

Author

Listed:
  • Mengxia Wang

    (Key Laboratory of Power System Intelligent Dispatch and Control, Shandong University, Jinan 250061, China)

  • Mingqiang Wang

    (Key Laboratory of Power System Intelligent Dispatch and Control, Shandong University, Jinan 250061, China)

  • Jinxin Huang

    (State Grid of Technology College, Jinan 250002, China)

  • Zhe Jiang

    (Electric Power Research Institute, State Grid Shandong Electric Power Company, Jinan 250003, China)

  • Jinyan Huang

    (ZaoZhuang Power Supply Company of State Grid Shandong Electric Power Company, ZaoZhuang 264000, China)

Abstract

Currently, the rapid increase in wind power integration in power systems is resulting in an increasing power flow in the grid-integrated power transmission lines of wind farms. The wind power curtailment caused by the current limits (thermal ratings) of the wind power integration overhead lines (WPIOLs) is becoming increasingly common. Aiming at this issue, the influence of conductor heating on the loss of tensile strength (LOTS) and sag of a WPIOL was analyzed in this paper. Then a decision model is proposed for the thermal ratings of WPIOLs, which regards the minimized wind power curtailment as objective and introduces permissible cumulative LOTS and sag of the conductor as constraints. Based on this model, the thermal rating for a WPIOL can be decided to ensure the expected service life of the conductor and safe clearance. In addition, case studies are used to demonstrate that the proposed approach is capable of improving the conservatism of conventional thermal rating calculation and reducing the wind power curtailment by improving the utilization efficiency of WPIOLs.

Suggested Citation

  • Mengxia Wang & Mingqiang Wang & Jinxin Huang & Zhe Jiang & Jinyan Huang, 2018. "A Thermal Rating Calculation Approach for Wind Power Grid-Integrated Overhead Lines," Energies, MDPI, vol. 11(6), pages 1-15, June.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:6:p:1523-:d:151930
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    References listed on IDEAS

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    1. Alberto Arroyo & Pablo Castro & Raquel Martinez & Mario Manana & Alfredo Madrazo & Ramón Lecuna & Antonio Gonzalez, 2015. "Comparison between IEEE and CIGRE Thermal Behaviour Standards and Measured Temperature on a 132-kV Overhead Power Line," Energies, MDPI, vol. 8(12), pages 1-12, December.
    2. Hideharu Sugihara & Tsuyoshi Funaki & Nobuyuki Yamaguchi, 2017. "Evaluation Method for Real-Time Dynamic Line Ratings Based on Line Current Variation Model for Representing Forecast Error of Intermittent Renewable Generation," Energies, MDPI, vol. 10(4), pages 1-16, April.
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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.

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