Study of a power frequency magnetic field of 1000 kV UHV AC transmission lines

The time-domain mathematical prediction model of a space frequency magnetic field of UHV AC transmission line was established,which simplified the tedious process of the model in the complex domain.The horizontal distribution of the power frequency magnetic field of UHV AC transmission line in our country was analyzed based on the prediction model,so that the maximum intensity of magnetic induction would be well shielded.In order to control the power frequency magnetic field,the size of the line load current,the height of wire from the ground,the conductor configuration of single-loop and the phase sequence arrangement of the double loop were studied in the fixed quantity.The results provided a more intuitionistic reference and learning for engineering designers.