Research of electromagnetic environment under super-voltage transmission lines

Our country environmental protection relevant standard prescribe 4 kV/m as working frequent electric field an evaluation standard in the resident areas, 0.1 mT as magnetic responds strength an evaluation standard. By actual measures, We found that all measure positions magnetic field strength accorded our country environmental protection standard. Therefore, the text merely research about electromagnetic environment and special change below super-voltage transmission lines. Using simulation charge method, we established working frequent electric field calculation method, the result is compared to actual measure data and international corresponding confined standard. We found that electric field intensity increase along with distance approach, but its max is not always appear below the transmission Lines. Besides, we found some factors such as trees, architectures and weather can attenuate electromagnetic field around transmission lines, which can lower the electromagnetism pollution of the surroundings environment.