Analysis of the Line-Frequency Electric Field Intensity around EHV Transmission

With the increase of the applications of EHV transmission lines operation, electromagnetic pollutions caused by power lines attract more people´s attention. So researching on the electric field intensity at operating frequency of EHV transmission lines is very meaningful for the EHV transmission lines´ design and the measurement of the surrounding electromagnetic environment. Firstly, this paper sets up a computational modeling of the electric field intensity around the EHV transmission lines based on the charge simulation method and method of mirror. It calculates the electric field intensity around EHV transmission lines by Matlab, and analyses the regularity of the electric field intensity when lack of phrase happens. Then it analyses the distributions and regularities of the electric field intensity under the influences of several actual conditions. In the end, it draws some helpful conclusions on the reduction of electric field intensity of EHV transmission lines and the estimation of the EHV transmission lines´ status according to the distributions of electric field.