Interaction of multi-circuit overhead transmission lines of different voltages located on the same pylons

Author

Novitskiy, Alexander ; Westermann, Dirk

Author_Institution

Power Syst. Dept., Ilmenau Univ. of Technol., Ilmenau, Germany

fYear

2012

fDate

11-13 June 2012

Firstpage

1

Lastpage

4

Abstract

The sharing of the routes for transmission overhead lines operated at different voltages and frequencies is a popular technical solution. Often the circuits of extra high and high voltage lines are installed on the same towers. This causes the electromagnetic interaction between corresponding power transmission systems. Earth fault currents and neutral point displacement voltages can be increased in electrical networks with resonant earthed neutral due to the electromagnetic influence from parallel located power transmission lines. Theoretical mechanism of the interaction, some practical examples based on investigations in German transmission networks and possible measures for the reduction of negative influences will be considered in the offered paper.

Keywords

fault currents; poles and towers; power overhead lines; Earth; German transmission networks; different voltages; electrical networks; electromagnetic influence; electromagnetic interaction; fault currents; multicircuit overhead transmission lines; neutral point displacement voltages; power transmission systems; pylons; routes; Conductors; Earth; Educational institutions; Fault currents; Poles and towers; Power transmission lines; Electromagnetic compatibility and interference; electromagnetic coupling; fault currents; fault diagnosis; interference suppression; power system faults; transmission lines;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Power Quality and Supply Reliability Conference (PQ), 2012

Conference_Location

Tartu

Print_ISBN

978-1-4673-1980-5

Electronic_ISBN

978-1-4673-1978-2

Type

conf

DOI

10.1109/PQ.2012.6256240

Filename

6256240