高电压技术2011，Vol.37Issue(11)：2830-2835,6.
Analysis of Magnetic Field Distribution Under Power Lines with Changing Direction and Carrying Different Current
Analysis of Magnetic Field Distribution Under Power Lines with Changing Direction and Carrying Different Current
T. Matsumoto 1H. Hirata 1H. Tarao 2N. Hayashi 3K. Isaka4
作者信息
- 1. Anan National College of Technology, Tokushima 774-0042, Japan
- 2. Kagawa National College of Technology, Kagawa, 761 8058, Japan
- 3. University of Miyazaki, Miyazaki 889-2192, Japan
- 4. University of Tokushima, Tokushima 770 8506, Japan
- 折叠
摘要
Abstract
Transmission power lines are a common source of extremely low frequency （ELF） magnetic fields which are usually analyzed as serial lines in one direction. Overhead vertical-type double-circuit power lines, which are generally used in Japan, sometimes carry different current for each circuit and change direction. In this paper, we focused on both the angle of direction change and the current balance in order to clarify the characteristics of distribution of magnetic fields at a height of 1 m. The magnetic field distributions were analyzed considering both the angle of power lines changing direction and the current balance of each circuit. The total magnetic field under overhead vertical-type double-circuit power lines with same current was generally reduced in comparison with that under a single-circuit power line due to phase difference. The total magnetic fields around the turning point where the change of transmission lines direction increased because each circuit came closer in that area. The component of Bz effect on total magnetic field was greatest around the maximum of total magnetic fields nearby the turning point.关键词
extremely low frequency（ELF）/magnetic field/power lines/calculation/double-circuit/different currentKey words
extremely low frequency（ELF）/magnetic field/power lines/calculation/double-circuit/different current分类
信息技术与安全科学引用本文复制引用
T. Matsumoto,H. Hirata,H. Tarao,N. Hayashi,K. Isaka..Analysis of Magnetic Field Distribution Under Power Lines with Changing Direction and Carrying Different Current[J].高电压技术,2011,37(11):2830-2835,6.
