http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고압 회전기 부분방전 신호에 혼합된 인접상 유도 잡음 제거 기법
尹永祐(Young-Woo Youn),李相和(Sang-Hwa Yi),黃敦夏(Don-Ha Hwang),秋榮培(Young-Bae Choo),姜東植(Dong-Sik Kang) 대한전기학회 2009 전기학회논문지 Vol.58 No.2
Analysis of the partial discharge signal, a technique to diagnose the stator winding insulation is a key function for the diagnosis of high voltage rotating machines and requires high precision. To satisfy this requirement, various denoising techniques such as filtering and differential methods were proposed. However, these techniques can not eliminate a adjacent induction noise that decreases reliability of the diagnosis. A simple novel denoising algorithm, therefore, is proposed for removing the adjacent induction noise in this paper. The algorithm shows good performance in the real partial discharge signals measured by 13㎸ class capacitive couplers installed at hydro-generator in Dae-cheong Dam.
정주영(Joo-Young Jeong),강동식(Dong-Sik Kang),선종호(Jong-Ho Sun),허종철(Jong-Cheol Heo),추영배(Young-Bae Choo),박정후(Chung-Hoo Park) 대한전기학회 2009 전기학회논문지 Vol.58 No.10
A partial discharge(PD) measurement is a very effective method to assess the insulation condition of high-voltage machines. It is necessary that the life time of the on-line PD measurement sensor is assessed. Therefore, the electrical life time assessment method of ceramic element was reviewed in order to estimate the life time of the on-line PD measurement sensor. The samples were prepared according to the reviewed method and were tested at 8㎸, 9㎸ and 10㎸. Based on the obtained results, the life time constant is shown above 59. Also, it is assumed that the estimated life time constant can be used to anticipate the life time and to assess the conformity of the on-line PD measurement sensor.