[1] Xu Jianqun, Ma Lin, Lü Xiaoming, Li Ling, et al. Operation optimization modefor nozzle governing steam turbine unit [J]. Journal of Southeast University (English Edition), 2014, 30 (1): 57-59. [doi:10.3969/j.issn.1003-7985.2014.01.011]

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Operation optimization modefor nozzle governing steam turbine unit()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

30

Issue:

2014 1

Page:

57-59

Research Field:

Energy and Power Engineering

Publishing date:

2014-03-31

Info

Title:

Operation optimization modefor nozzle governing steam turbine unit

Author(s):

Xu Jianqun¹;  Ma Lin¹;  Lü Xiaoming²;  Li Ling³

¹Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing 210096, China
²China Datang Corporation Anhui Branch Company, Hefei 230071, China
³China United Engineering Corporation, Hangzhou 310022, China

Keywords:

nozzle governing;  steam-excited vibration;  operation optimization;  unit efficiency

PACS:

TK267

DOI:

10.3969/j.issn.1003-7985.2014.01.011

Abstract:

Based on tests and theoretical calculation, an optimum steam admission mode is proposed, which can effectively solve the steam-excited vibration. An operation mode jointly considering the valve point and operation load is proposed based on the analysis and study of a large number of unit operation optimization methods. According to the steam-excited vibration that occurs during the optimization process when the nozzle governing steam turbine switches from a single valve to multi-valves, a steam admission optimization program is proposed. This comprehensive program considering the steam-excited vibration is applied to a 600 MW steam turbine unit to obtain the optimum sliding pressure curve and the optimum operation mode, and the steam-excited vibration is solved successfully.

References:

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[2] Song G X, Chen S P. Cause analysis of steam-excited vibration in steam turbine unit[J]. Journal of Power Engineering, 2012, 32(10): 770-778.
[3] Gao L, Dai Y P. Rotor dynamic stability under partial admission conditions in a large power steam turbine[C]//Proceedings of ASME Turbo Expo 2009. Orlando, USA, 2009: 1-15.
[4] Gao L, Dai Y P. Effect of steam distribution method on large steam turbine rotor stability[J]. Proceedings of the CSEE, 2008, 28(35): 84-89.(in Chinese)
[5] Li J L. Catastrophe mode of steam flow excitation vibration in steam turbine governing stage[J]. Proceedings of the CSEE, 2013, 33(11): 39-46.(in Chinese)
[6] Usón S, Valero A. Thermoeconomic diagnosis for improving the operation of energy intensive systems: comparison of methods[J]. Applied Energy, 2011, 88(3): 699-711.
[7] Naoto S, Tetsuya H. Numerical study of partial admission stages in steam turbine[J]. JSME International Journal, Series B, 2006, 49(2): 212-217.
[8] Krzysztof J. Method of increasing steam turbine control stage efficiency[J]. Computational and Applied Mechanics, 2001, 2(1): 37-43.

Memo

Memo:

Biography: Xu Jianqun(1959—), male, doctor, professor, qlj1062@163.com.
Foundation item: The National Natural Science Foundation of China(No.51176031).
Citation: Xu Jianqun, Ma Lin, Lü Xiaoming, et al. Operation optimization mode for nozzle governing steam turbine unit[J].Journal of Southeast University(English Edition), 2014, 30(1):57-59.[doi:10.3969/j.issn.1003-7985.2014.01.011]

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