Power Plant Performance Monitoring Using Statistical Methodology Approach

• Autorzy: Świrski K.
• Języki publikacji: EN

Abstrakty

EN

The paper sets out problems experienced in current power plant performance calculation methodology. With changes in the electricity market and the increased role of computer control and diagnostic system, the previous methodology is fast becoming obsolete. Several key factors are highlighted (for example, reference values and corrective curves) which may lead to highly imprecise and inadequate evaluations of plant performance and, especially, operator behavior. It is important to bear in mind the systemic changes on the energy market. The current methodology focuses on controlling factors impacting power generating efficiency whereas the modern market is more complex and real costs are largely dependent on other variable costs, such as environmental fees, equipment wearing costs and the energy trading market. Statistical analysis of data is proposed as a modification of the current methodology. As most heat rate calculation is done on-line, it is possible to analyze this data in detail and apply, for example, PCA (Principle Component Analysis) and linear (and nonlinear) regression, thereby enabling a more accurate determination of the influence of principle process parameters on heat rate deviation. The article presents sample results of comprehensive analysis (two cases from different plants) of two twin units (heat rate calculation and process data analysis from a 12-month period) which to demonstrate the clear need to modify and update the old performance calculation approach.

Słowa kluczowe

EN

power plant; performance monitoring

PL

elektrownia; monitorowanie wydajności

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2011
• Tom: Vol. 91, nr 2
• Strony: 63--76
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Świrski K.

• Institute of Heat Engineering, Warsaw University of Technology, 21/25 Nowowiejska Street, 00-665 Warsaw, Poland,

Bibliografia

• [1] Performance Monitoring System, User Manual, Emerson Process Management, revision VIII, 2005.
• [2] B. Owsianka, Kompleksowy system bilansowania i nadzoru eksploatacji elektrowni i elektrociepłowni metoda TKE (in Polish), Energetyka 3 (2002) 147.
• [3] S. Munukutla, P. Sistla, A novel approach to real-time performance monitoring of a coal-fired power plant, Electric Utility Deregulation and Restructuring and Power Technologies. Proceedings. DRPT 2000. International Conference, 4-7 April 2000 273-277.
• [4] G. Prasad, E. Swidenbank, B. W. Hogg, A novel performance monitoring strategy for economical thermal power plant operation, Energy Conversion, IEEE Transactions on 14 (1999) 802-809.
• [5] V. V. Kantubhukta, M. Abdelrahman, A feasibility study on using neural networks in performance analysis of coalfired power plants, Dept. of Electr. & Comput. Eng., Tennessee Technol. Univ., Cookeville, TN, USA; System Theory, 2004. Proceedings of the Thirty-Sixth Southeastern Symposium on ; Publication Date: 2004.