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Research on Stator Main Insulation Temperature Field of Air-Cooled Turbo-Generator after Main Insulation Shelling

Author

Listed:
  • Weili Li

    (Electric Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Yong Li

    (Electric Engineering, Beijing Jiaotong University, Beijing 100044, China
    Beijing BEIZHONG Steam Turbine Generator Co., Ltd., Beijing 100040, China)

  • Ying Su

    (Electric Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Purui Wang

    (Electric Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Wenmao Liu

    (Electric Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

The stator main insulation is the key component of turbo-generator, which is related to the thermal aging of turbo-generator. It is vital to accurately judge the generator aging by calculating the temperature distribution under main insulation normal operation and fault operation. In this paper, taking a 150 MW air-cooled turbo-generator as an example, the temperature field of the main insulation was studied after the stator main insulation shelling. Based on the finite element method, the stator temperature field after the main insulation shelling was calculated. The main insulation position of maximum temperature drop and the temperature distribution of the stator main insulation along the circumference and the axial direction were analyzed. At the same time, with the shelling gap of main insulation increases, the temperature distribution between shelling gap δ = 0.5 mm and δ = 1.0 mm was compared. The results can provide a theory for fault monitoring and diagnostics of the large-scale turbine generator.

Suggested Citation

  • Weili Li & Yong Li & Ying Su & Purui Wang & Wenmao Liu, 2018. "Research on Stator Main Insulation Temperature Field of Air-Cooled Turbo-Generator after Main Insulation Shelling," Energies, MDPI, vol. 11(5), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:5:p:1101-:d:143915
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    Citations

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    Cited by:

    1. Junqing Li & Luo Wang, 2019. "Calculation and Analysis of Rotor Thermal Static Field for Inter-Turn Short Circuit of Large Hydro-Generator Excitation Winding," Energies, MDPI, vol. 12(7), pages 1-19, April.
    2. Minghan Ma & Yonggang Li & Yucai Wu & Chenchen Dong, 2018. "Multifield Calculation and Analysis of Excitation Winding Interturn Short Circuit Fault in Turbo-Generator," Energies, MDPI, vol. 11(10), pages 1-16, October.

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