A model of condition evaluation for equipment in power plant

Author

Li, Jianlan ; Huang, Shuhong ; Shan, Pengsheng

Author_Institution

Huazhong Univ., Wuhan

fYear

2008

fDate

6-9 April 2008

Firstpage

2127

Lastpage

2130

Abstract

Exactly evaluating equipment´s condition is an important premise in making scientific maintenance decisions in power plant. Based on the basic grey theory, a new concept of grey space relational grade is advanced and its mathematics model is defined in this paper. Grey space relational grade is a fixed quantity index to evaluate the approximation degree of two sequences by comparing them both in distance and shape. A grey model of condition evaluation for equipment in power plant based on grey space relational grade is constructed in this paper. By calculating the grey space relational grade between condition parameter sequence and shutdown threshold sequence of evaluated equipment, the fixed quantity evaluation of equipment is realized in this model. Finally, condition evaluation of feed water pump is realized and good result is acquired, especially, the evaluation result is correct when some parameters deteriorate badly.

Keywords

condition monitoring; power apparatus; power plants; power stations; basic grey theory; equipment condition evaluation; fixed quantity index; grey space relational grade; parameter sequence; power plant; shutdown threshold sequence; Feeds; Maintenance; Mathematical model; Mathematics; Medical control systems; Power generation; Shape; Turbines; Uncertainty; Weather forecasting; Condition evaluation; equipment; grey model; grey space relational grade; power plant;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies, 2008. DRPT 2008. Third International Conference on

Conference_Location

Nanjuing

Print_ISBN

978-7-900714-13-8

Electronic_ISBN

978-7-900714-13-8

Type

conf

DOI

10.1109/DRPT.2008.4523761

Filename

4523761