Open AccessResearch on error mechanism analysis and compensation method of Fiber-Optical Current Transformer
Author(s) -
Dengyun Li,
Min Lei,
Dandan Zhang,
Shi Mo,
Yongfeng Chai
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1311/1/012012
Subject(s) - current transformer , transformer , optical fiber , error analysis , computer science , phase compensation , electronic engineering , optics , electrical engineering , engineering , physics , voltage , mathematics , telecommunications , bandwidth (computing)
The structure of Fiber-Optical Current Transformer (FOCT) is completely different from that of traditional electromagnetic transformer, and the error analysis method is quite different from that of traditional transformer. However, there is no systematic calculation method for the error of FOCT at present. Starting from the working principle and structure of fiber-optical current transformer, this paper theoretically analyses and deduces all kinds of error sources of FOCT, puts forward the error calculation method of FOCT, calculates the overall error based on the actual parameters of a 200 kV Fiber-Optical Current Transformer, and proposes a method to compensate the measurement error of FOCT by changing the initial phase angle of λ /4 wave plate. The initial phase angle of the λ /4 wave plate with the best error compensation effect is 86 degrees.