Influence of Resistance of Electric Arc on Transients Due to Disconnector Switching in Air-Insulated Substations

Author

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

Author_Institution

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

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

1035

Lastpage

1035

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 Bill are presented. The influence of resistance of electric arc between the contacts of disconnector is analysed. Computer simulations by means of EMTP-ATP 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

"Electric resistance","Substations","Surges","Power system transients","Computer simulation","Electrical resistance measurement","Switching circuits","Dielectric breakdown","Interrupters","Shape"

Publisher

ieee

Conference_Titel

Plasma Science, 2007. ICOPS 2007. IEEE 34th International Conference on

ISSN

0730-9244

Print_ISBN

978-1-4244-0915-0

Type

conf

DOI

10.1109/PPPS.2007.4346341

Filename

4346341