Title :
Modeling and diagnosis for gas turbine lube system
Author :
Yunpeng Cao ; Henan Zhao ; Ningbo Zhao ; Shuying Li
Author_Institution :
Coll. of Power & Energy Eng., Harbin Eng. Univ., Harbin, China
Abstract :
Lube system is one important auxiliary system of the gas turbine, and its operation stability directly related to the security and reliability of gas turbine. Typical faults and its mechanism are analyzed and the mathematic model of lube system is established in MATLAB/Simulink simulation environment, and the variable characteristic parameters of 4 typical faults which are cooler failure, filter block, flow loss due to leakage and damage of lube pump are obtained. Base on the analyzing of signed directed graph (SDG) modeling mythology, the SDG qualitative model of lube system is presented. The states of nodes and branches of lube system SDG Model are quantified by the typical faults simulation results, and the fault diagnostic rule database of lube system are formed. Finally, simulation experiment shows that the SDG fault diagnostic method is feasibility and effective.
Keywords :
directed graphs; failure analysis; fault diagnosis; gas turbines; losses; mathematical analysis; power system stability; Matlab-simulink simulation environment; SDG qualitative model; auxiliary system; cooler failure; fault diagnostic rule database; filter block; flow loss; gas turbine lube system; gas turbine reliability; gas turbine security; lube pump leakage damage; mathematic model; operation stability; signed directed graph modeling mythology; typical fault simulation; variable characteristic parameters; Analytical models; Educational institutions; Intelligent control; MATLAB; Mathematical model; Turbines; fault diagnosis; gas turbine; lube system; modeling; signed directed graph;
Conference_Titel :
Intelligent Control and Automation (WCICA), 2014 11th World Congress on
DOI :
10.1109/WCICA.2014.7053331
