Influence of harmonic AC voltage on surface discharge formation in transformer insulation
作者： R. Sarathi , I. P. Merin Sheema , J. Sundara Rajan , M. G. Danikas
关键词:
摘要: The Ultra High Frequency (UHF) signal radiated during the surface discharge process under harmonic AC voltages with different Total Harmonic Distortion (THD) shows a dominant frequency at 0.8 GHz. inception voltage decreases an increase in harmonics and THD as observed present work. peak factor of show inverse relationship. rise time injected current pulse due to discharges measured using Current Transformer (HFCT) is about 600 ps 900 for positive negative signal, respectively. Cumulative energy spectra Ternary plot confirms that UHF generated does not significantly vary THD's. magnitude formed 50 Hz higher than voltage. Surface charge measurement after corona charging oil impregnated pressboard material indicates amount deposited high specimen damaged Degraded zone insulation was analyzed Attenuated Reflectance Fourier Transform Infra-red (ATR-FTIR) spectroscopy. Phase resolved partial (PRPD) studies indicate activity predominates when rate high.
sci-hub.se 参考文章(48)
F. Guerbas, M. Zitouni, A. Boubakeur, A. Beroual, Barrier effect on breakdown of point-plane oil gaps under alternating current voltage Iet Generation Transmission & Distribution. ,vol. 4, pp. 1245- 1250 ,(2010) , 10.1049/IET-GTD.2010.0231
M. Florkowski, B. Florkowska, Distortion of partial-discharge images caused by high-voltage harmonics IEE Proceedings - Generation, Transmission and Distribution. ,vol. 153, pp. 171- 180 ,(2006) , 10.1049/IP-GTD:20050008
Xin Luo, Haiqing Niu, Juzhuo Wu, A modified method of suppressing narrow-band interference using FFT power spectrum ieee international conference on solid dielectrics. pp. 83- 87 ,(2013) , 10.1109/ICSD.2013.6619806
A. Beroual, L. Kebbabi, E.A. Al-Ammar, M.I. Qureshi, Analysis of creeping discharges activity at solid/liquid interfaces subjected to ac voltage Iet Generation Transmission & Distribution. ,vol. 5, pp. 973- 978 ,(2011) , 10.1049/IET-GTD.2010.0598
S. Tsukao, A. Eto, T. Kobayashi, Y. Shirasaka, S. Yamada, N. Hosokawa, Increase of Static Electrification in Aged Transformers 2007 IEEE Power Engineering Society General Meeting. pp. 1- 5 ,(2007) , 10.1109/PES.2007.386077
Junhao Li, Wenrong Si, Xiu Yao, Yanming Li, Measurement and simulation of partial discharge in oil impregnated pressboard with an electrical aging process Measurement Science and Technology. ,vol. 20, pp. 105701- ,(2009) , 10.1088/0957-0233/20/10/105701
I. Fofana, A. Bouaïcha, M. Farzaneh, Characterization of aging transformer oil–pressboard insulation using some modern diagnostic techniques European Transactions on Electrical Power. ,vol. 21, pp. 1110- 1127 ,(2011) , 10.1002/ETEP.499
V.M. Moreno-Villa, M.A. Ponce-Velez, E. Valle-Jaime, J.L. Fierro-Chávez, Effect of surface charge on hydrophobicity levels of insulating materials IEE Proceedings - Generation, Transmission and Distribution. ,vol. 145, pp. 675- 681 ,(1998) , 10.1049/IP-GTD:19982361
Jiaming Yan, Ruijin Liao, Lijun Yang, Jian Li, Bin Liu, Product analysis of partial discharge damage to oil-impregnated insulation paper Applied Surface Science. ,vol. 257, pp. 5863- 5870 ,(2011) , 10.1016/J.APSUSC.2011.01.125
B. Lutz, J. Kindersberger, Surface charge accumulation on cylindrical polymeric model insulators in air: simulation and measurement IEEE Transactions on Dielectrics and Electrical Insulation. ,vol. 18, pp. 2040- 2048 ,(2011) , 10.1109/TDEI.2011.6118642