Thermo-Economics Diagnosis for Large Steam Turbine Sections in Power Plants

Abstract:

In this paper, a method based on the thermo-economics structure theories and the prospect diagnosis will apply in the 630MW power plants. To make use of thermodynamic simulation establish system of the thermo-economics produce model. The thermo-economic model and the exergy cost model for the plant based on the Fuel-Product concept have been defined to quantify the productive interaction between different devices. The paper analyses the 3VWO and 4VWO conditions and the effects of the operating parameters on the exergy cost of each component have been studied. The results showed that the Structure Theory is a powerful and effective tool, which can make up the insufficiencies of the conventional thermodynamic methods and can be used for the cost-effective operation analysis and optimization in thermal power plants and other complex energy system.

• Periodical: Advanced Materials Research (Volumes 805-806)
• Pages: 496-503
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.805-806.496
• Online since: September 2013
• Authors: Yong Feng Shi, Hao Chang, Bao Yu Wang, Jian Qun Xu, Ke Yi Zhou
• Keywords: Exergetic Cost, Structure Theory, Thermal Power System, Thermo-Economics

References

[1] Antonio Valero, Luis Correas, Alejandro Zaleta, Andrea Lazzaretto, Vittorio Verda, Mauro Reini, Victor Rangel. On the thermoeconomic approach to the diagnosis of energy system malfunctions：Part 2. Malfunction definitions and assessment [J]. Energy，2004(29)，1889-(1907).

DOI: 10.1016/j.energy.2004.03.008

[2] A. Zaleta-Aguilar, L. Correas-Uson, J. Kubiak-Szyszka, F.Z. Sierra-Espinosa. Concept on thermoeconomic evaluation of steamturbines[J]. Applied Thermal Engineering, 2007(27): 457-466.

DOI: 10.1016/j.applthermaleng.2006.06.018

[3] ZHANG Xiaodong , WANG Jiaxuan , WANG Qingzhao Thermo-economic Method for the Performance Diagnosis of a 200MW Power Plant[J]. Journal of engineering for thermal energy and power (in Chinese). 2003, 18(3)：240-244.

[4] ZHANG Chao, LIU Liming, CHEN Sheng, ZHENG Chuguang Performance evaluation of thermal power system based on the structure theory of thermo-economic [J]. Proceedings of the CSEE(in Chinese). 2005, 25(24)：108-115.

[5] Shi Yongfeng, Xu Jianqun, Zhou Keyi Structural theory and thermoeconomic diagnosis: application to a supercritical power plant 978-1-4244-2487-0/09/©2009 IEEE.

[6] Wang Qingzhao，Xiao Weijie，Wang Jiaxuan An inquity into the application of the structural theory for diagnosing malfunction in a thermal system [J]. Proceedings of the CSEE (in Chinese) . 2003, 23(9)：178-181.

[7] ZHANG Xiao-dong, GAO Bo , WANG Jia-xuan Research on the application of structure theory and LIFO costing for a power plant[J]. Proceedings of the CSEE (in Chinese). 2003, 233(6): 185-189.

[8] Li Weijun, Zhang Bao, Tong Xiaozhong The Analysis of Abnormal of Shaft Vibration and Bearing Temperature Turbine Inlets Mode's Shifting[J]. Turbine technology (in Chinese). 2006. 48(6): 462-464.

[9] Li Ming, Huang Piwei, Jiao Qingfeng, Xu Shu, Qiu Yingjun, Jiang Beihua. Research on test of large steam turbine units optimaloperation and economy analysis[J]. Hunan Electric Power (in Chinese). 2008. 28(1): 27-30.