Appling improvement of the inverse time overload protection of large generating units

Author

Fu, Qiuling ; Yin, Xianggen ; Li, Xinjing ; Li, Zhenxing

Author_Institution

State Key Lab. of Adv. Electromagn. Eng. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

1

fYear

2011

fDate

8-9 Sept. 2011

Firstpage

63

Lastpage

66

Abstract

Inverse time protection is widely used in overload protection scheme of large generating units, but the operation curve adopted by inverse-time overload protection is different from the practical overload curve of generating units. Hence, there are many inconveniences for application of inverse-time overload protection. Problems about constitution of inverse-time characteristic curve, realization of micro-computer and curve-fitting are analyzed in this paper. Setting principles for inverse-time overload protection of large generating units are described, based on its application in protection scheme of large-scaled generating units installed in Three Gorges Right Bank Power Station.

Keywords

curve fitting; hydroelectric generators; hydroelectric power stations; power generation protection; Three Gorges right bank power station; appling improvement; curve fitting; inverse time overload protection; inverse time protection; large generating unit; operation curve; Curve fitting; Equations; Fitting; Generators; Mathematical model; Relays; Stators; inverse time; large generating units; overload protection; setting calculation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering and Automation Conference (PEAM), 2011 IEEE

Conference_Location

Wuhan

Print_ISBN

978-1-4244-9691-4

Type

conf

DOI

10.1109/PEAM.2011.6134796

Filename

6134796