| Title |
Establishment of National Standard System for 240 kV High Voltage Transformer |
| Authors |
정재갑(Jung, Jae-Kap) ; 권성원(Kwon, Sung-Won) ; 이상화(Lee, Sang-Hwa) ; 강전홍(Kang, Jeon-Hong) ; 김명수(Kim, Myung-Soo) ; 한상길(Han, Sang-Gil) ; 김윤형(Kim, Yoon-Hyoung) ; 한상옥(Han, Sang-Ok) |
| Keywords |
National Standard System ; Voltage Transformer ; VT Comparator ; Ratio Error ; Phase Displacement ; VT Burden |
| Abstract |
National standard system for calibrating voltage transformer(VT) up to primary voltage of 240 kV have been established in 2005. The system consists of voltage source, regulating unit, VT testing unit, standard VT, VT under test and VT burden. To verify and validate the performance for 240 kV VT calibration system, the comparison with the National Measurement Institute of Australia(NMIA) has been performed using same VTs. The comparison results of the VTs mesured at the Korea Research Institute of Stansdards and Science(KRISS) are consistent with those measured at NMIA within 0.002 % for ratio error and 0.14 min for phase displacement in the primary voltage ranges of Vp = 3300 V - 22000 V with a secondary voltage of Vs = 110 V. |