The out-of-step protection with prediction function for generators

Author

Daqiang, Bi ; Xiangheng, Wang ; Zhenyu, Xu ; Weijian, Wang

Author_Institution

Tsinghua Univ., Beijing, China

Volume

1

fYear

2001

fDate

2001

Firstpage

127

Abstract

This paper puts forward a developed scheme against the deficiencies of the out-of-step protection based on the three-impedance element principle, which is widely applied at present. Compared with the original scheme, the developed scheme can predict the out-of-step caused by steady stability disruption or transient instability by using the least square method in advance and monitor the limit of steady stability. So the performance of the out of step protection is improved. The paper gives the whole developed protection scheme. The results of dynamic simulation experiments verify the scheme

Keywords

electric impedance; least squares approximations; machine protection; stability; synchronous generators; least square method; out-of-step protection; power angle; prediction; prediction function; slipping frequency; stability disruption; synchronous generators; three-impedance element principle; transient instability; Frequency; Impedance; Monitoring; Power generation; Power measurement; Power system protection; Power system stability; Power system transients; Synchronous generators; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on

Conference_Location

Shenyang

Print_ISBN

7-5062-5115-9

Type

conf

DOI

10.1109/ICEMS.2001.970624

Filename

970624