Efficiency of admitance relays during faults with high fault resistance values in MV networks

Author

Lorenc, J. ; Kwapisz, A. ; Musierowicz, K.

Author_Institution

Poznah Univ. of Technol., Poznan

fYear

2005

fDate

27-30 June 2005

Firstpage

1

Lastpage

5

Abstract

In this paper efficiency of the different types of the admittance criteria is described during faults with high value of the fault resistance. The two types of fault are considered: high- ohm resistance in the fault loop and unbalance of the phase load caused by discontinuity of the line feeder with simultaneous occurrence of the ground-fault located behind the gap. Values of the zero sequence signals of current and voltage during those types of faults are shown.

Keywords

fault diagnosis; power system faults; power system relaying; MV Networks; admitance relays; fault loop; ground-fault; high fault resistance values; high- ohm resistance; line feeder; phase load; zero sequence signals; Admittance measurement; Current measurement; Earth; Electrical resistance measurement; Filters; Power system protection; Protective relaying; Radio frequency; Relays; Voltage; fault currents; industrial power system faults; overcurrent protection; power distribution faults; power distribution lines; power distribution protection; power system faults; power system reliability; protective relaying;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Tech, 2005 IEEE Russia

Conference_Location

St. Petersburg

Print_ISBN

978-5-93208-034-4

Electronic_ISBN

978-5-93208-034-4

Type

conf

DOI

10.1109/PTC.2005.4524435

Filename

4524435