EMI characteristics of distribution lines located in desert lands

Results are reported of a two-year field study carried out to determine the electromagnetic interference (EMI) characteristics of distribution lines located in a hot, dry desert environment with high amounts of airborne particulates. Typical characteristics such as EMI frequency spectrum, EMI lateral profile, and statistical scatter in EMI levels were investigated. The results show that unlike distribution lines located in wet climates, the lines located in dry, desert regions do not generate appreciable levels of radio interference (RI). Details are provided about the lines, environment conditions, measurement procedures, and EMI characteristics. The results of the field study have been verified in the laboratory by determining the characteristics of typical EMI sources that can occur on distribution lines