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http://dx.doi.org/10.5370/JEET.2018.13.3.1317

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)
Publication Information
Journal of Electrical Engineering and Technology / v.13, no.3, 2018 , pp. 1317-1325 More about this Journal
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.
Keywords
770MW jumbo hydroelectric generator; Leading-phase operation capability; Power system stability; Electromagnetic analysis; Temperature;
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1 Z.-N. Fan, Y. Liao, L. Han, L.-D. Xie, "No-load voltage waveform optimization and damper bars heat reduction of tubular hydro-generator by different degree of adjusting damper bar pitch and skewing stator slot," IEEE Trans. Energy Conver., vol. 28, no. 3, pp. 461-469, Sept. 2013.   DOI
2 M.-Q. Hu and X.-L. Huang, Numerical computation method and its application of electric machine performance. Nanjing: Southeast University Press, 2003, 16-30.
3 SIMSEN 2.3: Modular simulation software for the analysis of energy conversion systems, 2008.
4 C. Hui. Q/GDW 746-2012: Chinese national standard synchronous generator leading-phase test guideline. Beijing: Standards Press of China, 2012.
5 Y. Wei, C. Jun, S. Quan-rong, "Discussion on large non-salient pole generator phase-advancement operation," Autom. Electr. Power Syst., vol. 31, no. 2, pp. 94-97, 2013.
6 X. Hai-xia, Y. Ying-ying, X. Su-ming, "Magnetic thermal coupling analysis of end region of 1000MW turbine generator," in Proc. CSEE, 2008, pp. 118-122.
7 S. Jia-yan, S. Yuan-su, Z. Xiao-min, "The new method of determining the capability of leading phase of generator and realizing the no-line monitoring," in Proc CSEE, vol. 26, no. 11, pp. 139-143, 2006.
8 Keranen, J., Ponomarev, P., Pippuri, J., et al, "Parallel Performance of Multi-Slice Finite-Element Modeling of Skewed Electrical Machines", IEEE Trans on Magnetics, vol. 53, no. 6, pp. 1204-1207, 2017.
9 S. Keller, M. Tu. Xuan, J. -J. Simond, and A. Chwery, "Large low-speed hydro-generator-unbalanced magnetic pulls and additional damper losses in eccentricity conditions," IET Electr. Power Appl., vol. 21, no. 5, pp. 657-664, Sept. 2007.
10 LIU Xiangyu, HE Yuling, ZHOU Wen, LIU Qingquan, CHANG Yongliang, MENG Fanchao, "Analysis on Unit Capability of Leading-phase Operation Considering Stability Restriction of Power Grid", Journal of North China Electric Power University, vol. 44, no. 1, pp. 52-57, 2017.
11 Huangfu, Y., Wang, S., Qiu, J., Zhang, H., et al, "Transient Performance Analysis of Induction Motor Using Field-Circuit Coupled Finite-Element Method", IEEE Trans on Magnetics, vol. 50, no. 2, pp. 2283-2286, 2014.
12 Sarikhani, A., Nejadpak, A., Mohammed, O. A, "Coupled Field-Circuit Estimation of Operational Inductance in PM Synchronous Machines by a Real-Time Physics-Based Inductance Observer", IEEE Trans. on Magnetics, vol. 49, no. 5, pp. 2283-2286, 2013.   DOI
13 G. Traxler-Samek, S. Lugand, and A. Schwery, "Add loss in the damper winding of large hydrogenerator at open-circuit and load conditions," IEEE Trans. Ind. Electron., vol. 57, no. 1, pp. 154-160, Jan. 2010.   DOI
14 W. Li, Y. Zhang, Y. Chen, "Calculation and analysis of heat transfer coefficients and temperature fields of air-cooled large hydro-generator rotor excitation windings," IEEE Trans. Energy Conver., vol. 26, no. 3, pp. 946-952, Sept. 2011.   DOI
15 W. Li, C. Guan, and Y. Chen, "Influence of rotation on rotor fluid and temperature distribution in a large air-cooled hydrogenerator," IEEE Trans Energy Conver., vol. 28, no. 1, pp. 117-124, 2013.   DOI