Research on EMI of UHV AC Transmission Line to Power Communication Equipment Along the Line

In the past 20 years, with China's socio-economic development and the imbalance of power resources, China has built more and more UHV AC-DC transmission lines, even UHV transmission lines. These high-voltage lines have made outstanding contributions to China's "power transmission from the west to the east" project, but the strong electromagnetic field environment of the ultra-high-voltage transmission lines also brings some non-negligible AC interference to the communication equipment along the line. Therefore, the electromagnetic interference and electromagnetic compatibility of transmission lines to communication equipment is an important issue for the safe operation of power grid. Based on the finite element algorithm, this paper calculates the electromagnetic interference of the UHV transmission line to the electric power communication equipment installed on the same tower, and discusses the AC interference borne by the communication equipment in different locations, different erection methods and different atmospheric environments by combining with the simulation model, which provides a certain positive significance for the operation and maintenance of the electric power communication equipment.