Currents closing via the copper ribbon of MV cables at single-phase short-circuits on the HV side of a 110/20 kV station

Author

Toader, D. ; Haragus, St ; Blaj, C.

Author_Institution

Dept. of Phys. Fundamentals of Eng., Univ. Politeh. of Timisoara, Timisoara

fYear

2008

fDate

22-24 May 2008

Firstpage

191

Lastpage

196

Abstract

At a single-phase short-circuit on the 110 kV side of the transformer station the value of the current closing through the equivalent grounding electrode of the city or the industrial plant depends, to a great extent, on the position of the electrode relative to the 110 kV line which feed the fault. In the paper the influence of some parameters which affect the value of the short-circuit current which closes through the copper ribbon of the medium voltage cable is analyzed. The conditions in which this current has a maximum, respectively a minimum, are also investigated.

Keywords

copper; power cables; power transformers; short-circuit currents; transformer substations; MV cables; copper ribbon; current closing; grounding electrode; industrial plant; medium voltage cable; short-circuit current; single-phase short-circuits; transformer station; voltage 110 kV; voltage 20 kV; Cables; Cities and towns; Conductors; Copper; Electrodes; Equations; Grounding; Impedance; Industrial plants; Medium voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Optimization of Electrical and Electronic Equipment, 2008. OPTIM 2008. 11th International Conference on

Conference_Location

Brasov

Print_ISBN

978-1-4244-1544-1

Electronic_ISBN

978-1-4244-1545-8

Type

conf

DOI

10.1109/OPTIM.2008.4602365

Filename

4602365