Abstract
In power system, the problem of power quality will directly affect the fundamental interests of power generation, supply and use. The operation quality of overhead transmission lines is closely related to the level of power system. The safety and stability performance of the whole system will greatly improve if the discharge phenomenon can be judged by the online monitoring device. Therefore, it is of great importance to effectively investigate the discharge phenomenon of overhead transmission lines. The discharge of overhead lines is mainly corona discharge, which is usually presented as an electromagnetic pulse signal. Hence, the corona discharge signal has a wide band range, which is often accompanied by power loss, wireless interference and noise pollution. Detecting corona discharges can reflect line operation and provide reference information for maintenance. In this paper, the influence of different factors on the Hilbert fractal antenna is compared in the corona discharge detection frequency band of 200-300MHz. The influencing factors involved are order, feeding point position, wire length and wire width. By simulating the control variables, the optimal results are selected to optimize the final model parameters.
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