Study on Torsional Shaft Vibration Response of Turbine-Generator Unit

1992 ◽  
pp. 319-326
Author(s):  
Huang Xiuzhu ◽  
Zhang Xueyan ◽  
Sun Daixia
Keyword(s):  
Vibration Response ◽  
Turbine Generator ◽  
Generator Unit ◽  
Shaft Vibration

Nonlinear modal interaction analysis and vibration characteristics of a francis hydro-turbine generator unit

2021 ◽  
Vol 168 ◽  
pp. 854-864
Author(s):  
Beibei Xu ◽  
Xingqi Luo ◽  
Mònica Egusquiza ◽  
Wei Ye ◽  
Jing Liu ◽  
...  
Keyword(s):  
Interaction Analysis ◽  
Vibration Characteristics ◽  
Modal Interaction ◽  
Turbine Generator ◽  
Hydro Turbine ◽  
Nonlinear Modal Interaction ◽  
Generator Unit

Application of Improved Genetic Algorithm in Maintenance Decision for Turbine-Generator Unit

2010 ◽  
Vol 44-47 ◽  
pp. 2940-2944
Author(s):  
Qing He ◽  
Jian Ding Zhang
Keyword(s):  
Genetic Algorithm ◽  
Heuristic Algorithms ◽  
Maintenance Scheduling ◽  
Improved Genetic Algorithm ◽  
Turbine Generator ◽  
Executive Process ◽  
Generator Unit ◽  
Maintenance Decision ◽  
Constrained Conditions ◽  
Operating Unit

The complicated function relations are more prone to appear in the maintenance scheduling of steam-turbine generator unit. Many constrained conditions are often attendant with these function relations. In these situations, the traditional method often can not obtain the exact value. The genetic algorithm (GA), a kind of the heuristic algorithms, does not need the function own good analytic properties. In addition, as the operating unit of GA is the group, so it applies to the parallel computing process. In GA executive process, the offspring continually inherit the genes from the parents, so it is more prone to be involved in the local convergence. An improved genetic algorithm is proposed and used in the model of maintenance decision of turbine-generator unit under. The goal of the model is to seek to the rational maintenance scheduling of the generator unit, so as to minimize the sum of the maintenance expense, the loss of the profit on the generated energy, and the loss of the penalty. It is proved by the example that IGA is highly efficient.

scholarly journals Evaluation of a Catalytic Combustor in a Gas Turbine-Generator Unit

1990 ◽  
Author(s):  
Shinichi Kajita ◽  
Yasutaroh Tanaka ◽  
Junichi Kitajima
Keyword(s):  
Control System ◽  
Gas Turbine ◽  
Development Program ◽  
Combustion Efficiency ◽  
Turbine Generator ◽  
Operation Test ◽  
Generator Unit ◽  
Catalytic Combustor ◽  
Generator Output ◽  
Very High

As a final step of the Catalytic Combustor Development Program, a catalytic combustor developed was tested in a 150-kW gas turbine-generator unit. A digital control system was developed to improve its controllability for a transient operation, and a 200-hr continuous operation test was performed to asses the durability of the catalyst. During the test, an excellent performance of the control system was verified, and a very high combustion efficiency of more than 99% and a ultra-low NOx level of less than 5.6 ppm (at 15% O2) were achieved at a 150-kW generator output. In addition, the combustion efficiency has been maintained at over 98% for 200 hours of operation. However, the catalyst exposed to 200 hours of operation showed signs of deactivation.

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