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The Optimization of Optical Current Transformer owing to Incident Polarization  

Kim Duck-Lae (단국대 의학레이저협동과)
Kim Byung-Tai (청주대 레이저광정보공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.54, no.9, 2005 , pp. 407-413 More about this Journal
Abstract
The optical current transformer was developed for 170 kV GIS using optical fiber. The sensor optimized on the optical CT was wound 3 turns and twisted 4 times per a turn at the pipe with a diameter of 130 m. To optimize the optical CT, the output signal was measured according to the setting angle of polarizer and analyzer, The asymmetry and distortion of the output signals were improved when the parallel polarized light was incident to the fiber sensor and under the angle of analyzer was $45^{o}$. The measurement error for the linearity was only $\pm{0.42}\;\%$ to 1,000 A in the case of reflection type.
Keywords
Fiber Sensors; Optical Current Transformer;
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Times Cited By KSCI : 1  (Citation Analysis)
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