Commenced in January 2007
Paper Count: 30075
Circuit Breaker and Transformer Monitoring
Abstract:Since large power transformers are the most expensive and strategically important components of any power generator and transmission system, their reliability is crucially important for the energy system operation. Also, Circuit breakers are very important elements in the power transmission line so monitoring the events gives a knowledgebase to determine time to the next maintenance. This paper deals with the introduction of the comparative method of the state estimation of transformers and Circuit breakers using continuous monitoring of voltage, current. This paper gives details a new method based on wavelet to apparatus insulation monitoring. In this paper to insulation monitoring of transformer, a new method based on wavelet transformation and neutral point analysis is proposed. Using the EMTP tools, fault in transformer winding and the detailed transformer winding model were simulated. The current of neutral point of winding was analyzed by wavelet transformation. It is shown that the neutral current of the transformer winding has useful information about fault in insulation of the transformer.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1332120Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1469
 E.P.Dick, C.C Erven, " Transformer diagnostic testing by frequency response analysis", IEEE Trans. Power Appl. Syst., 1978, PAS-97,vol.6, pp. 2144-2153
 J.Lapworth, T.Mcgrail, "Transformer winding movement detection by frequency response analysis". Proc. 66th Annual Int. Conf. Doble Clients, Boston, MA, April 1999
 G.Mcdowell, L.Lockwood, "Real time monitoring of movement of transformer winding", IEE Colloquium on Condition monitoring and remanent life assessment in power transformers, 1994, pp. 1-14
 .Z.D.Wang,P.A.Crossley,K.J.Cornik,D.H.Zho, "An Algorithm for Partial Discharge Location in Distribution Power Transformer",IEEE Power Engineering Society Winter Meeting, Jan 2000.
 S. M.Islam , G. Ledwich, " Locating Transformer Faults Through Sensitivity Analysis of High Frequency Modeling Using Transfer Function Approach" Conference Record of the IEEE International Symposium on Electrical Insulation,Montreal, Quebec,Canada,June 16- 19 ,1996
 .J.Gui,W.Gao, K.Tan, Sh.Gao, "Locating Partial Discharge in Power Transformer by Electrical Method" Proceeding of the 7th International Conference on Properties and Application of Dielectric Materials .June 1-5,2003, Nagoya
 P. L.Tim├ír., A. Fazekas., L .Kiss.," Villamos gépek zaja és rezgése. Műszaki Könyvkiad├│" Budapest, 1968.
 L. T├│th, T. T├│th, "Short-circuit tests on power transformers with pressure measurements," Powertech 99, Budapest
 RST Ltd, Transanal-16 user-s manual, Budapest, 2001
 G.B. Gharehpetian, H. Mohseni ,K. Moeller, "Hybrid Modeling of Inhomogeneous Transformer Windings for Very Fast Transient Overvoltage Studies", IEEE Trans. on Power Delivery, Vol. 13, No. 1, Jan. 1998, pp. 157-163.
 P .Nikolay.Kolev, Micheal G.Danikas, Elissaveta D.Gadjeva, Nikolay R.Gourov, "Development of Partial Discharge Model, Simulation and Measurement", 1999 Conference on Electrical Insulation and Dielectric Phenomena, Vol.1, p.p: 214 - 217
 S.I. Jeon , D. Sung Shin , D.H.Yun , K. M. Han , M.Koo. Han. "A study on the partial discharge characteristics according to distribution pattern of voids within an insulation" , 5th International Conference on Conduction and Breakdown in Solid Dielectrics, p.p: 398 - 402 ,995
 F.Chunju, K.K. Li, W.L. Chan, Y.Weiyong, Z.Zhaoning," Application of wavelet fuzzy neural network in locating single line to ground fault (SLG) in distribution lines," International Journal of Electrical Power & Energy Systems, Vol.29, Issue 6,pp: 497-503, 2007