Influence of resistance of electric arc on transients due to disconnector switching in air-insulated substations

Author

Carsimamovic, S. ; Bajramovic, Z. ; Veledar, M. ; Ljevak, M. ; Carsimamovic, A. ; Osmokrovic, P.

Author_Institution

Faculty of Electrical Engineering, University of Sarajevo, Bosnia & Herzegovina

Volume

2

fYear

2007

fDate

17-22 June 2007

Firstpage

1840

Lastpage

1843

Abstract

Switching overvoltages due to disconnector switching in air-insulated substations are presented. Shapes and levels of switching overvoltages by means of experimental and computing investigations on 220 kV switchyards of Public Enterprise Elektroprivreda BiH are presented. The influence of resistance of electric arc between the contacts of disconnector is analysed. Computer simulations by means of EMTP-ATP [1] are performed. Differences between the measured and the calculated values were under 4.52% for overvoltage factor, and under 2.56% for overvoltage wave frequency. Comparison of the transient computer simulations with the field measurements showed that calculations could be used for assessment of the transient overvoltages caused by disconnector switching.

Keywords

Computer simulation; Contact resistance; Electric resistance; Electrical resistance measurement; Electromagnetic interference; Frequency; Power generation; Substations; Surges; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulsed Power Conference, 2007 16th IEEE International

Conference_Location

Albuquerque, NM

Print_ISBN

978-1-4244-0913-6

Electronic_ISBN

978-1-4244-0914-3

Type

conf

DOI

10.1109/PPPS.2007.4652549

Filename

4652549