A circuit breaker spring performance testing method based on ncc-sar algorithm

Abstract

The invention discloses a circuit breaker spring performance detection method based on a NCC-SAR (Normalized Cross Correlation-Self Adjustment Region) algorithm, which relates to the technical field of high-voltage equipment detection. According to the circuit breaker spring performance detection method based on the NCC-SAR algorithm, the movement conditions of a spring during opening and closingprocesses of the circuit breaker are captured through a high-speed camera, and a sequence of thousands of frames of images is acquired; the NCC-SAR algorithm is adopted to recognize the movement characteristics of each turn of the spring; and in combination of a circuit breaker spring performance evaluation function, evaluation on the performance of a tested spring is realized. The detection method is a non-contact detection method, live detection on a circuit breaker spring operating in the field can be realized without disassembling the spring for test, and the difficult problem that a spring fatigue test machine needs to disassemble the spring can be solved; and the NCC-SAR algorithm is an adaptive matching algorithm, and has the advantages that the recognition precision is high; the anti-noise interference ability is strong; influences of linear transformation of a gray value do not exist; the operating speed is quick; and the online spring performance detection efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage equipment detection, and in particular relates to a circuit breaker spring performance detection method based on a Normalized Cross Correlation-Self Adjustment Region (NCC-SAR) adaptive region matching algorithm. Background technique [0002] High-voltage circuit breakers are important equipment in power systems, and their operational reliability is crucial to the protection and control of power grids. The operating mechanism is one of the core components that determine the performance of the circuit breaker. The spring operating mechanism is the most commonly used operating mechanism, and it involves a large number and type of springs. Therefore, the reliability of the springs in the circuit breaker has a great impact on equipment and equipment. The safe operation of the power system has an important impact. With the extension of the service life of the circuit breaker, the spring in the in...

AI Technical Summary

Problems solved by technology

The normalized cross-correlation (NCC) matching algorithm has high recognition accuracy, strong anti-noise ability, and is not affected by the linear transformation of the gray value, but it has a large amount of calculation and slow running speed. Therefore, on the premise of ensuring the matching accuracy, optimize the NCC The running speed of the algorithm is the key to realize the detection of circuit breaker spring performance based on computer vision technology

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