Measured impedance by distance relay in second protective zone

Author

Shateri, H. ; Jamali, S.

Author_Institution

Iran Univ. of Sci. & Technol., Tehran

fYear

2007

fDate

4-6 Sept. 2007

Firstpage

900

Lastpage

904

Abstract

Distance relays are one of the mostly used protective devices in the transmission systems. These relays are used as the main, First zone and a part of second zone, and the backup, the rest of second zone and third zone, protective devices. Fault resistance is a source of error for distance relays in the form of the measured impedance deviation from its actual value. This paper investigates the measured impedance by distance relays for the faults on the next line by means of measured impedance calculation and its variation duo the changes in the power system parameters.

Keywords

electric impedance measurement; power transmission faults; power transmission protection; relay protection; Fault resistance; distance relay; impedance measurement; power system parameters; protective devices; second protective zone; transmission systems; Circuit faults; Earth; Electrical resistance measurement; Impedance measurement; Power measurement; Power system faults; Power system measurements; Power system relaying; Protection; Protective relaying; Distance relay; Fault resistance; Measured impedance; Second protective zone;

fLanguage

English

Publisher

ieee

Conference_Titel

Universities Power Engineering Conference, 2007. UPEC 2007. 42nd International

Conference_Location

Brighton

Print_ISBN

978-1-905593-36-1

Electronic_ISBN

978-1-905593-34-7

Type

conf

DOI

10.1109/UPEC.2007.4469068

Filename

4469068