Analysis of Electric and Magnetic Fields Measured Near TVA´s 500-kV Transmission Lines

Increasing concern over the effects of electric and magnetic fields in the vicinity of EHV overhead ac transmission lines has made it essential that the electric utilities be able to predict accurately the magnitudes of the fields. An extensive electric and magnetic fields data collection project was undertaken by the Tennessee Valley Authority (TVA) under the sponsorship of the U.S. Department of Energy (DOE) to establish a data base of fields values in the vicinity of TVA´s 500-kV transmission lines. The objectives of the TVA/DOE 500-kV electric and magnetic fields project were a) To measure, analyze and document electric and magnetic fields data in the vicinity of TVA´s 500-kV transmission lines. b) To assess the effects of EHV transmission line fields on the growth and development of selected agricultural and forest species.