{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T15:01:31Z","timestamp":1784041291280,"version":"3.55.0"},"reference-count":37,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2023,8,16]],"date-time":"2023-08-16T00:00:00Z","timestamp":1692144000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100014103","name":"Key Research and Development Program of Shandong Province (Major Innovation Project)","doi-asserted-by":"publisher","award":["2022CXGC020902"],"award-info":[{"award-number":["2022CXGC020902"]}],"id":[{"id":"10.13039\/100014103","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100014103","name":"Key Research and Development Program of Shandong Province (Major Innovation Project)","doi-asserted-by":"publisher","award":["2021ZDZX003"],"award-info":[{"award-number":["2021ZDZX003"]}],"id":[{"id":"10.13039\/100014103","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Tai\u2019an Science and Technology Innovation Major Project","award":["2022CXGC020902"],"award-info":[{"award-number":["2022CXGC020902"]}]},{"name":"Tai\u2019an Science and Technology Innovation Major Project","award":["2021ZDZX003"],"award-info":[{"award-number":["2021ZDZX003"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>To address the problem of mechanical defect identification in a high-voltage circuit breaker (HVCB), this paper studies the circuit breaker vibration signal and proposes a method of feature extraction based on phase-space reconstruction of the vibration substages. To locate mechanical defects in circuit breakers, vibration signals are divided into different substages according to the time sequence of the parts of the circuit breakers. The largest Lyapunov exponent (LLE) of the vibration signals\u2019 substages is calculated, and then the substages are reconstructed in high-dimensional phase space. The geometric features of the phase trajectory mean center distance (MCD) and vector diameter offset (VDO) are calculated, and the LLE, MCD, and VDO are selected as the three fault identification features of the vibration substages. The eigenvalue anomaly rate of each substage of the vibration signal under defect state are calculated and analyzed to locate the vibration substage of the mechanical defect. Finally, a fault diagnosis model is constructed by a support vector machine (SVM), and the common mechanical defects of circuit breakers simulated in the laboratory are effectively identified.<\/jats:p>","DOI":"10.3390\/s23167201","type":"journal-article","created":{"date-parts":[[2023,8,16]],"date-time":"2023-08-16T10:09:33Z","timestamp":1692180573000},"page":"7201","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["A Mechanical Defect Localization and Identification Method for High-Voltage Circuit Breakers Based on the Segmentation of Vibration Signals and Extraction of Chaotic Features"],"prefix":"10.3390","volume":"23","author":[{"given":"Shi","family":"Cao","sequence":"first","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0523-4466","authenticated-orcid":false,"given":"Tong","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gang","family":"Wang","sequence":"additional","affiliation":[{"name":"Shandong Taikai Automation Co., Ltd., Tai\u2019an 271000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tigui","family":"Zhang","sequence":"additional","affiliation":[{"name":"Shandong Taikai Disconnector Co., Ltd., Tai\u2019an 271000, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chenlei","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qinzhe","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhenming","family":"Zhang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaolong","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Electrical Engineering, Shandong University, Jinan 250061, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,8,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Guo, Z., Li, L., Han, W., and Guo, Z. 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