Partial discharge direction finding method based on ultrahigh-frequency phased array principle in substation
A partial discharge and ultra-high frequency technology, which is applied in the field of partial discharge direction finding based on the principle of ultra-high frequency phased array, and can solve the problem of low resolution threshold and estimation deviation of direction finding accuracy, unfavorable inspection, and heavy maintenance workload. problem, to improve the anti-interference ability and direction finding accuracy, great practical value, and improve the effect of direction finding accuracy
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[0052] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings and embodiments.
[0053] Such as figure 1 As shown, a partial discharge direction finding method based on the UHF phased array principle in a substation of the present invention includes the following steps:
[0054] 1) UHF phased array and high sampling rate digital detection equipment are used to collect and record partial discharge signals in substations;
[0055] As an example, figure 2 The model of the uniform linear UHF phased array established for the present invention. Set partial discharge sources at multiple positions, and the azimuth angle θ ranges from -90° to 90° relative to the center of the uniform linear array. Set the azimuth angle θ on the left side of the Y axis to be positive, and the azimuth angle θ on the right side to be positive. burden. In the simulation, the azimuth angle of the partial discharge source is set ...
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