Open AccessOptical sensors for power transformer monitoring: A review
Author(s) -
Ma Guoming,
Wang Yuan,
Qin Weiqi,
Zhou Hongyang,
Yan Chao,
Jiang Jun,
Ju Yiguang
Publication year - 2021
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve2.12021
Subject(s) - transformer , power transmission , electricity , current transformer , electrical engineering , dissolved gas analysis , computer science , engineering , electronic engineering , power (physics) , transformer oil , voltage , physics , quantum mechanics
Power transformers play a vital role in power transmission systems from the energy source to the consumption center. In situ diagnostics of the performance of power transformers provides a variety of benefits to ensure reliable electricity transmission. Immunity to electromagnetic interference, high sensitivity, high insulation as well as small dimensions of optical sensing make it very attractive for applications in power transformer monitoring. This paper presents a critical review of various diagnostic methods for power transformers such as partial discharge, dissolved gases, temperature and other important sensing, and optical detection. The advantages and disadvantages of different monitoring methods are carefully discussed and assessed. Finally, the existing technical barriers and future prospects of optical monitoring methods for power transformers are presented.