Partial discharge orientation system and method based on ultrahigh frequency sensor three-dimensional area array and neural network

Abstract

The invention discloses a partial discharge orientation system based on an ultrahigh frequency sensor three-dimensional area array and a neural network. The partial discharge orientation system comprises a regular dodecahedron frame; the at least six dipole antennas are correspondingly arranged on at least six surfaces of the regular dodecahedron frame respectively; the processing module is connected with the data output end of each dipole antenna so as to receive ultrahigh frequency partial discharge data detected by each dipole antenna; the processing module adopts a neural network to screen ultrahigh frequency partial discharge data detected by each dipole antenna so as to screen out data with small fluctuation; and the processing module also performs cubic spline interpolation fitting on the data obtained by screening, and determines a final orientation result of partial discharge based on the fitted data. Correspondingly, based on the partial discharge orientation system, the invention further discloses a partial discharge orientation method based on the ultrahigh-frequency sensor three-dimensional area array and the neural network, and accurate orientation of partial discharge can be achieved.

Description

technical field [0001] The present invention relates to an orientation system and method, in particular to a partial discharge orientation system and method. Background technique [0002] As we all know, in the power supply line, partial discharge (Partial Discharge, PD) is the main reason for the insulation failure of electrical equipment. When the insulation failure of electrical equipment occurs, it is easy to cause the entire power supply line to be paralyzed. [0003] Therefore, in order to timely feedback the operating status of electrical equipment, it is often necessary to detect partial discharge of electrical equipment and accurately orientate partial discharge, thereby providing important information for condition monitoring and maintenance of electrical equipment. [0004] In the prior art, due to the advantages of high sensitivity and strong anti-interference, UHF detection technology has been widely used at home and abroad. At present, time-of-arrival (TOA) or...

AI Technical Summary

Problems solved by technology

This type of method usually requires nanosecond-level time synchronization between sensors and a sampling rate of at least several GSa / s. The hardware cost is too high, and the equipment is bulky and poor in portability.

[0005] In addition, the existing partial discharge location method based on time difference can only give the coordinates of the partial discharge point or the direction of arrival, that is, it obtains a one-dimensional result without visualization function

Images