Management of gas-insulated transmission lines magnetic fields

Recent worldwide attention to the harmful effects of magnetic fields emanating from power lines resulted in a growing motivation to develop methods for magnetic field mitigation aiming at reducing the possibilities of such hazards. In densely populated areas, gas-insulated transmission lines or cables offer an attractive alternative to overhead transmission lines owing to their compact nature and safety. This paper discusses the possible techniques that can be used to manage magnetic fields emanating from the isolated phase system and the three conductor system. Configuration modification and active shielding techniques were found to be the effective management techniques in case of isolated phase system, while, active shielding technique was the effective in the later system