The Design and Applications of a Gap Noise Generator for Simulating Corona Discharge from Test Line

摘要

In order to survey the radiation characteristics of pure line noise produced by corona discharge from overhead high voltage transmission lines, a disk type gap noise generator is manufactured. Disk size that decides capacitance between the noise generator and the ground is selected through preliminary indoor experiments and analysis by using charge simulation method. The field experiments are performed with the noise generator hung on the Kochang 765 kV full scale test line. As the results, the useful data that can be used to analysis the radiation characteristics of corona noises from transmission lines are obtained. Those data are the directivity of antenna toward the line, lateral profiles, frequency spectra, height pattern and so on.