| Title |
Study to improve the Reliability of Voltage Transformers installed on High Voltage Buses in Power Plants |
| Authors |
김순용(Soon-Yong Kim) ; 박진엽(Jin-Yeub Park) ; 정필범(Pil-Bum Jeong) |
| DOI |
https://doi.org/10.5370/KIEEP.2020.69.1.1 |
| Keywords |
Voltage Transformer; Failure Mechanism; Voltage Factor; Knee Point; Iron Saturation |
| Abstract |
Voltage Transformer supplies Low Voltage Signals that are step downed from High Voltage to Voltage Meters and Protective Relays. The failures of Voltage Transformers cause to occur Trip events in Power Plants. This study analyzes the failure mechanism and possibility in the VT Design & Manufacturing process . And also, this study reviews the effects of the Switching Surge and Ferro Resonance that are occurred when the Circuit Breakers are opening/ closing in the operating environments. and then proposes an improved methods to make the Voltage Transformer with high reliability. |