Work

Chromaticity and image processing applied to determine the erosion area of vacuum interrupter contacts

Year: 2025

Type: article

Abstract: The contact is the core component inside the vacuum switch arc extinguishing chamber. Studying the surface ablation phenomenon of the contact and evaluating the ablation area has an important impact on regulating the evolution of various physical fields in the vacuum arc extinguishing chamber, optimizing the performance of the vacuum arc extinguishing chamber, and extending its service life. This article proposes a method for evaluating the surface ablation area of vacuum switch contacts. This method is based on chromaticity theory and image processing technology. In the RGB, HSI, HSL, and HSV color systems, image feature analysis, pixel statistics, threshold cutting, edge enhancement, and area calculation methods are used to evaluate the ablation area of contact ablation images. Ten sets of test pieces are used for accuracy analysis. The experimental results show that area evaluation can be achieved in the RGB, HSI, HSL, and HSV color systems, and the evaluation accuracy is high in the HSV color system, with an evaluation error controlled within 3 %. This research method can provide evaluation methods and data support for extending the service life of vacuum switches, optimizing contact structures, and other related research.

Source: Heliyon

DOI: 10.1016/j.heliyon.2025.e42570

Authors: Liting Ma, Zhaoyu Ku, Dongheng Li, Jia Shi, Huajun Dong

Institutions: Dalian University, Dalian Jiaotong University

Language: English

Topic: Vacuum and Plasma Arcs

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: Liaoning Provincial Department of Human Resources and Social Security, National Natural Science Foundation of China, Natural Science Foundation of Liaoning Province, Department of Education of Liaoning Province