A positioning method for pressure plates of automatic relay protection devices based on Hough transform

doi:10.3969/j.issn.1674-1951.2021.08.009

Abstract

Abstract:

The current intelligent image recognition method applied for pressure plates of automatic relay protection devices has problems such as large deviations in switching status recognition for pressure plates and inaccurate identification of pressure plates' switching statuses due to the interference of redundant information in images.We propose a positioning method for pressure plates of automatic relay protection devices based on image pre-processing technology and Hough transform.By processing the original image of the pressure plate with image denoising and edge detection,the method can make line detection on the processed pressure plate images based on improved Hough transform,realizing the positioning for pressure plates of automatic relay protection devices.The proposed method reduces the amount of data for the subsequent intelligent image recognition by removing the redundant and useless information away from the original image. The test results show that the method can locate the pressure plate in the image.

Key words: relay protection, image denoising, edge detection, Hough transform, pressure plate positioning

CLC Number:

TM77

HUANG Weihao, LU Yongyin, LUO Qifeng, FAN Dehe, YUAN Tuolai, YAN Chao. A positioning method for pressure plates of automatic relay protection devices based on Hough transform[J]. Huadian Technology, 2021, 43(8): 61-66.

Figures/Tables 12

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N_p值	D_p值	直线数目
100	9	1 007
100	15	487
200	9	305
200	15	227
300	9	147
300	15	117