Protection of mixed overhead and underground cable lines

Author

Tziouvaras, D.A. ; Needs, J.

Author_Institution

Schweitzer Eng. Labs., Inc., Pullman, WA, USA

fYear

2014

fDate

March 31 2014-April 3 2014

Firstpage

1

Lastpage

6

Abstract

This paper describes the protection challenges of ac underground cables and transmission circuits with mixed conductor technologies. In addition, the paper discusses the challenges of calculating the relay ac input quantities for faults along the underground cable circuit and of determining the fault loop impedances measured by ground distance relays. The paper provides application solutions for the proper protection and autoreclosing of underground cables and mixed conductor technology circuits.

Keywords

overhead line conductors; power cables; power overhead lines; power transmission faults; power transmission protection; relay protection; underground transmission systems; fault loop impedance determination; ground distance relays; mixed conductor technology circuits; mixed overhead cable line protection; mixed underground cable line protection; relay AC input quantity calculation; transmission circuit protection; underground cable circuit; Autoreclosing; cable protection; compensated ground loop impedance; differential protection; mixed conductor circuits;

fLanguage

English

Publisher

iet

Conference_Titel

Developments in Power System Protection (DPSP 2014), 12th IET International Conference on

Conference_Location

Copenhagen

Print_ISBN

978-1-84919-834-9

Type

conf

DOI

10.1049/cp.2014.0132

Filename

6822940