| Title |
The vibration detection and analysis of 3-phase cast resin transformer in less than 50% load conditions |
| Authors |
송길목(Shong, Kil-Mok) ; 방선배(Bang, Sun-Bae) ; 김종민(Kim, Chong-Min) ; 김영석(Kim, Young-Seok) ; 최명일(Choi, Myung-Il) |
| DOI |
https://doi.org/10.5370/KIEE.2012.61.7.992 |
| Keywords |
Vibration velocity ; Vibration frequency ; Solid insulator ; Cast resin transformer ; Live diagnostics |
| Abstract |
In this paper, we were analyzed the vibration characteristics of the three-phase cast resin transformer using less than 50% of load in the field. Most of the cast resin transformer is less than 50% in the domestic field is used for load conditions. Consisting of a solid insulator cast resin transformer is generating lots of noise and vibration. In addition, because it is affected by Joule 's heat is used in light load conditions. As a results, the transformer vibrations at frequencies below about from 200Hz to 500Hz were detected. Vibration velocity depends on the load variations were found. Load up to approximately 20-30% in most cases the vibration velocity was found at 4,000 μm/s or less, 8,000 μm/s or more. Vibration frequency at light load conditions were generated at the 120Hz, 240Hz, 360Hz and 480Hz. At the load condition of from 10% to 20%, vibration velocity is higher than another. Most of the vibration velocity were identified at the 1,000 μm/s or less. Using the vibration frequency and velocity measurements data, the load on the cast resin transformer analyzed the correlation of the burden. Therefore, this data could be found in the vibration characteristics of the light-load conditions. If the field measurements using the data perform diagnostics on the transformer, it's expected to be very effective. |