Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Study on Leading-phase Operation Capability of a 770 MW Jumbo Hydro-generator based on Stability Analysis and End-Region Heat Analysis

  • Fan, Zhen-nan (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Zhou, Zhi-ting (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Li, Jian-fu (Dong Fang Electrical Machinery Co., Ltd.) ;
  • Wen, Kun (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Wang, Jun (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Sun, Zhang (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Wang, Tao (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University) ;
  • Yao, Bing (The Key Laboratory of Fluid and Power Machinery, Ministry of Education, Xihua University)
  • Received : 2017.10.06
  • Accepted : 2018.01.26
  • Published : 2018.05.01
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Abstract

A generator-grid coupling calculation model is established to study the leading-phase operational capability of a 770 MW jumbo hydro-generator in a Chinese ultra-mega hydropower station. The static and dynamic stability of the generator are analyzed and calculated to obtain stability limits under leading-phase operating conditions. Three-dimensional (3D) time-varying nonlinear moving electromagnetic and temperature field models of the generator end-region are also established and used to determine the magnetic field, loss, and temperature of the end-region under the leading-phase operating condition. The simulation results agree with data measured from the actual 770 MW hydro-generator. This paper provides reliable reference data for the leading-phase operation of a jumbo hydro-generator, which will help to improve in the design and manufacture of future hydro-generators.

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References

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