Accurate fault location algorithms for two parallel transmission line using one-end data

Author

Qingchao, Zhang ; Thomas, D.W.P.

Author_Institution

Sch. of Electr. Eng. & Energy, Tianjin Univ., China

Volume

1

fYear

2001

fDate

2001

Firstpage

527

Abstract

A novel numerical algorithm of fault location estimation for an inter-circuit four line fault with ground connection is presented in this paper. This is based on one-terminal voltage and current data. The loop and nodal equations comparing the faulted phases to nonfaulted phases of two-parallel circuits are introduced in the fault location estimation models, in which source impedance of the remote end is not involved. The effect of load flow and fault resistance on the accuracy of fault location are effectively eliminated, therefore a precise algorithm is derived. The algorithm is demonstrated by digital computer simulations

Keywords

electric resistance; fault location; load flow; power transmission faults; power transmission lines; digital computer simulations; fault location algorithms; fault location estimation; fault resistance; faulted phases; ground connection; inter-circuit four line fault; load flow; loop equations; nodal equations; nonfaulted phases; one-end data; one-terminal current data; one-terminal voltage data; parallel transmission line; remote end; source impedance; two-parallel circuits; Fault location; Transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission and Distribution Conference and Exposition, 2001 IEEE/PES

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-7285-9

Type

conf

DOI

10.1109/TDC.2001.971289

Filename

971289