| Title |
The Optimization of Optical Current Transformer owing to Incident Polarization |
| Authors |
김덕래(Kim Duck-Lae) ; 김병태(Kim Byung-Tai) |
| Keywords |
Fiber Sensors ; Optical Current Transformer |
| 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. |