Modeling of Corona at Ultra High Voltage Transmission Lines

摘要

The paper makes use of the calculation results of ANSYS software, and establishes a model of corona at ultra high voltage transmission lines with Electromagnetic Transient Program (EMTP). The proposed model is applied to lightning calculation of the conductors. The simulation results indicate that the wave attenuation caused by corona takes an important place and it is significant to reduce the insulation level. Therefore this factor should be considered when determine the insulation coordination for the transmission lines so not as to increase the cost of the project.