Parameter Identification of Steam Turbine Speed Governing System Using an Improved Gravitational Search Algorithm

2017 2nd Asia Conference on Power and Electrical Engineering

能源学;电工学

Zhong, Jing-Liang^1 ; Deng, Tong-Tian^1 ; Wang, Jia-Sheng^1

Electric Power Research Institute of Guizhou Power Grid Co., Ltd., Guiyang

550002, China^1

关键词: Gravitational parameters;    Gravitational search algorithms;    Identification process;    Iteration process;    Parameter identification methods;    Search spaces;    Thermal power units;    Turbine speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/199/1/012103/pdf
DOI  :  10.1088/1757-899X/199/1/012103

来源: IOP

【 摘 要 】

Since most of the traditional parameter identification methods used in the steam turbine speed governing system (STSGS) have the shortages of great work load, poor fitness and long period by hand, a novel improved gravitational search algorithm (VGSA) method, whose gravitational parameter can be dynamically adjusted according to the current fitness and search space will keep being more and more narrow during the iteration process, is proposed in this paper based on an improved gravitational search algorithm (IGSA). The performance of this new method was identified through the comparisons of the steam turbine speed governing system identification results with IGSA using the measured data from a 600MW and a 300MW thermal power unit. The results show that the new method VGSA has the features of higher precision and higher speed during the identification process, and it brings a new scheme for steam turbine speed governing system identification.