Computation of EMI fields generated due to corona on high voltage over head power transmission lines

Author

Nayak, S.K. ; Thomas, M. Joy

Author_Institution

Dept. of High Voltage Eng., Indian Inst. of Sci., Bangalore, India

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

15

Lastpage

19

Abstract

Corona generated pulsed currents on high voltage transmission line conductors radiate electromagnetic fields, which, in turn, can interfere with communication systems, and radio as well as television receivers operating nearby. In this paper, the corona generated electromagnetic interference (EMI) field in dB at an observation point near the ground has been computed assuming the ground as a perfect conductor. It has been observed that the interference field starts abruptly at the corona inception voltage and it increases with the voltage stress on the conductor. It is also observed that the EMI field reduces with increase in lateral distance and also with increase in frequency as well as the conductor diameters for the same line voltage.

Keywords

corona; electromagnetic interference; overhead line conductors; power overhead lines; transmission line theory; transmission network calculations; EM field radiation; EMI fields computation; EMI measurements; communication systems; corona inception voltage; corona-generated pulse currents; high-voltage overhead power transmission lines; radio receivers; television receivers; transmission line conductors; voltage stress; Conductors; Corona; EMP radiation effects; Electromagnetic fields; Electromagnetic interference; Power generation; Power transmission lines; Pulse generation; TV; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Interference and Compatibility, 2001/02. Proceedings of the International Conference on

Print_ISBN

0-7803-7563-7

Type

conf

DOI

10.1109/ICEMIC.2002.1006454

Filename

1006454