{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,5]],"date-time":"2026-02-05T07:23:24Z","timestamp":1770276204635,"version":"3.49.0"},"reference-count":28,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T00:00:00Z","timestamp":1716336000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Natural Science Foundation of the Hubei Province of China","award":["2023 AFB895"],"award-info":[{"award-number":["2023 AFB895"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In answer to the demand for high sensitivity and miniaturization of ultra-high frequency (UHF) sensors for partial discharge (PD) detection in power equipment, this paper proposes research on miniaturized UHF-sensing technology for PD detection in power equipment based on symmetric cut theory. The symmetric cut theory is applied for the first time to the miniaturization of PD UHF sensors for power equipment. A planar monopole UHF sensor with a size of only 70 mm \u00d7 70 mm \u00d7 1.6 mm is developed using an exponential asymptotic feed line approach, which is a 50% size reduction. The frequency\u2013response characteristics of the sensor are simulated, optimized and tested; the results show that the standing wave ratio of the sensor developed in this paper is less than 2 in the frequency band from 427 MHz to 1.54 GHz, and less than 5 in the frequency band from 300 MHz to 1.95 GHz; in the 300 MHz~1.5 GHz band; the maximum and average gains of the sensor E-plane are 4.76 dB and 1.02 dB, respectively. Finally, the PD simulation experiment platform for power equipment is built to test the sensor\u2019s sensing performance; the results show that the sensor can effectively detect the PD signals; the sensing sensitivity is improved by about 95% relative to an elliptical monopole UHF sensor.<\/jats:p>","DOI":"10.3390\/s24113313","type":"journal-article","created":{"date-parts":[[2024,5,22]],"date-time":"2024-05-22T10:00:11Z","timestamp":1716372011000},"page":"3313","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Research on Miniaturized UHF Sensing Technology for PD Detection in Power Equipment Based on Symmetric Cut Theory"],"prefix":"10.3390","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0009-0006-4115-5991","authenticated-orcid":false,"given":"Bowen","family":"Xu","sequence":"first","affiliation":[{"name":"Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chaoqian","family":"Duan","sequence":"additional","affiliation":[{"name":"Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jiangfan","family":"Wang","sequence":"additional","affiliation":[{"name":"Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Electric Power Research Institute, Guangxi Power Grid Co., Ltd., Nanning 530023, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guozhi","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guoguang","family":"Zhang","sequence":"additional","affiliation":[{"name":"Hubei Engineering Research Center for Safety Monitoring of New Energy and Power Grid Equipment, Hubei University of Technology, Wuhan 430068, China"},{"name":"Handan Puxin Electric Power Technology Co., Ltd., Handan 057150, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guangke","family":"Li","sequence":"additional","affiliation":[{"name":"Handan Puxin Electric Power Technology Co., Ltd., Handan 057150, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,22]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/j.snb.2014.02.078","article-title":"Humidity-sensing properties of chemically reduced graphene oxide\/polymer nanocomposite film sensor based on layer-by-layer nano self-assembly","volume":"197","author":"Zhang","year":"2014","journal-title":"Sens. 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