| Title |
Measurement of Ratio Error/Phase Angle Error of Potential Transformer using High Voltage Capacitance Bridge and Uncertainty Analysis |
| Authors |
권성원(Kwon, Sung-Won) ; 이상화(Lee, Sang-Hwa) ; 김명수(Kim, Myung-Soo) ; 정재갑(Jung, Jae-Kap) |
| Keywords |
Potential Transformer ; Ratio Error ; Phase Angle Error ; High Voltage Capacitance Bridge ; High Voltage Capacitor ; Low Voltage Capacitor ; Ratio Correction Factor |
| Abstract |
A potential transformer(PT) has ratio error and phase angle error. Precise measurement of the errors of PT can be achieved using high voltage capacitance bridge, high voltage capacitor and low voltage capacitor. The uncertainty for this method is evaluated and found to be 20×10^{-6} in both ratio error and phase angle error. The values measured for PT using the method are well consistent with the those measured for same PT in NMIA(National Measurement Institute of Australia) within the corresponding uncertainty. |