Title :
On the relative power contribution between process variables of SCR control systems for ST-GT combined cycle power plants
Author :
Thong, Mai Duc ; Nakano, Kazushi ; Toyoda, Yukihido
Author_Institution :
Dept. of Mech. Eng. & Intell. Syst., Univ. of Electro-Commun., Tokyo, Japan
Abstract :
This paper is concerned with a method of computing the relative power contribution ratio (PCR) between process variables of a Selective Catalytic Reduction (SCR) system in a steam turbine (ST)-gas turbine (GT) combined cycle power plant. The PCR is used to select process variables in the statistical model of the system to be considered. Firstly, we show a method for computing the PCR using a RBF-ARX-based modeling of the SCR. Next, we demonstrate the effectiveness of the PCR in evaluating the identified system. Finally, we consider about a method for computing PCR for general stationary control systems based on Otomo-Nakagawa-Akaike´s method, which is applicable to the above-mentioned SCR systems.
Keywords :
combined cycle power stations; nonlinear control systems; power generation control; predictive control; statistical analysis; Otomo-Nakagawa-Akaike method; PCR; RBF-ARX-based modeling; SCR control systems; ST-GT combined cycle power plants; general stationary control systems; process variables; relative power contribution ratio; selective catalytic reduction system; statistical model; steam turbine-gas turbine combined cycle power plant; Analytical models; Computational modeling; Fluid flow; Fuels; Predictive models; Thyristors; Turbines; RBF-AR model; RBF-ARX model; relative power contribution ratio; system identification; time-frequency analysis;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on
Conference_Location :
Phetchaburi
Print_ISBN :
978-1-4673-2026-9
DOI :
10.1109/ECTICon.2012.6254249
