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TABLE OF CONTENTSPages

ARWtr 2010 LECTURES

1.- Profits of Promoting R+D+i Cooperation University-ManufacturesThe Case of UVIGO-EFACEC

Xose M. LOPEZ-FERNANDEZ

Dept. Of Electrical EngineeringUniversidade de Vigo Spainxmlopez@uvigo.es

J anusz TUROWSKIRetired of Institute of Electrical Machines and TransformersTechnical University of Lodz, Lodz, Poland

6 - 7

2.1- Transformer Innovation: Dry-type Transformers for the 72.5 kV Voltage Class- Safe and Ecological

Martin CARLEN1, Rafael MURILLO2, Mariano BERROGAIN2, J ens TEPPER31ABB Management Services Ltd, Affolternstrasse 44, CH-8050 Zurich, Switzerland;martin.carlen@ch.abb.com2Asea Brown Boveri S.A., Ctra. de Madrid, km 314, E-50012 Zaragoza, Spain,rafael.murillo@es.abb.com,mariano.berrogain@es.abb.com,3ABB Transformatoren, Keffelker Strae 66, D-59929 Brilon, Germany,jens.tepper@de.abb.com

8 - 13

2.2- New Technologies in Transformer Service

Miguel OLIVA*1, Roberto ASANO J UNIOR21ABB Power TransformersCalle Escritor Conde Zamora s/n, 14004 Crdoba, SpainPhone: (+34) 957469169, fax: (+34) 957469190, e-mail:miguel.oliva@es.abb.com2ABB Transformer Service

Barrio de Galindo s/n, 48510 Trapagarn, SpainPhone: (+34) 944858341, fax: (+34) 944858361, e-mail: roberto.asano@es.abb.com

14 - 23

2.3- New Products, Innovation and Concepts in Transformers: Fast deployablePower Transformer, a Mobile Concept for High Voltage Transmission Systems

Miguel OLIVA (1), Lorenzo PRIETO (1), Ignacio ANGUAS (2), Manuel LOPEZ CORMENZANA (2)(1)ABB, Asea Brown Boveri S.A.Escritor Conde Zamora s/n, 14004, Cordoba, Spain.miguel.oliva@es.abb.com, lorenzo.prieto@es.abb.com(2)Red Elctrica de EspaaPaseo del Conde de los Gaitanes 177, 28109 Alcobendas, Madrid, Spainjanguas@ree.es, mlopez@ree.es

24 - 29

3.- Standards for High-Temperature Insulation SystemsRichard P. MAREK

DuPont Protection Technologies, Energy Solutions5401 Jeferson Davis Highway, Richmond, Virginia, USA 23234Phone: (804) 383-2376, fax: (804) 383-2009, e-mail:richard.p.marek@usa.dupont.com

30 - 42

4.- On-Load Tap-Changers with Vacuum Switching technologyfor Increased Fire safety, Reliability and Environmental Performance

Rainer FROTSCHER

Maschinenfabrik Reinhausen GmbHFalkensteinstr. 8, 93059 Regensburg, Germany

Phone: (+49) 941 4090-4136, fax: (+49) 941 4090-4055, e-mail:r.frotscher@reinhausen.com

43 - 52

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5.- Non-Conventional Instrument Transformers Application of Rogowski CoilsCurrent Sensors in New Protection Solutions

J orge F. MARTINS

REN - Rede Elctrica NacionalRua Casal dos Mogos Vermoim, 4470-259 Maia, PortugalPhone: (+351) 220011600; e-mail: jorgefilipe.martins@ren.pt

Pedro M. MONTEI RO; Andr DOS SANTOS

REN - Rede Elctrica NacionalRua Cidade Goa n4, 2685-038 Sacavm, Portugal

Lj. A. KOJ OVIC; M. T. BISHOP; T. R. DAY

COOPER Power Systems2300 Badger Dr, Waukesha, WI 53188,Wisconsin, USA

53 - 62

6.- Solutions To Overvoltages In The Reconnection Of The Lines

With Inductive Voltage TransformersAdolfo IBERO, J avier AGUIRRE

High Voltage Instruments Transformers Department, ARTECHEDerio Bidea 28, 48100 Mungia, SpainPhone: (+34) 946011200, fax: (+34) 946740958, e-mail:ai@arteche.es, jagu@arteche.es

63 - 70

7.- Shunt Reactor Cores up to 800 kV 300 MVAr

K.ECKHOLZ and S.YREKTEN

ENPAY Transformer ComponentsKaradenizliler Mah. Fatih Cad. No: 147/A, P.K.91 41140,Kullar-Basiskele/Kocaeli,TURKEYPhone: (+90) 262 3495820, fax: (+90) 262 3495830, e-mail:info@enpay.com

71 - 79

8.- Wind Turbine TransformersJ avier IBAEZ MAYAYO, Raquel CHAMOCHIN ESCRIBANO and Clara MATEO MARTINEZ DE ALBORNOZ

Department of Operating Experience/Production/Technical Division, Iberdrola Renewables.Parque Empresarial Cristalia, Via de los Poblados 3, Edificio 9, 28033 Madrid, SpainPhone: (+34) 913257905, e-mail: jibanezm@iberdrola.es

80 - 86

9.- Mineral Insulating Oil, Production, Supply and its Management

Bruce PAHLAVANPOUR

Nynas PetroleumThe courtyars, Elmdon House , 116 London Rd, Guildford, Surrey, UKPhone: (+44) 1483506953, fax: (+44) 1483506954, e-mail: bruce.pahlavanpour@nynas.com

87 - 93

10.- Comparison Study Between Gas Chromatography and Photo-Acoustic InfraredSpectroscopy For Dissolved Gasses Analysis

Victor SOKOLOV, Donal SKELLY, Alfonso DE PABLO*, Walter FERGUSON

GE Energy Transformer ServicesLissue Industrial Est. East. Lissue Road. Lisburn BT28 2RB. Northern Ireland, United KingdomPhone: (+34) 917157792, e-mail: alfonso.depablo@ge.com

94 - 98

11.- Oil Gap Strength as a Function of Voltage Application Time

Ryszard MALEWSKI

ConsultantMalewski Electric Inc.Montreal, Que., Canadamalewski@ieee.org

99 - 116

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12.- Insulation Condition Assessment of Power Transformers to be Scrapped

Bernhard HEINRICH, Hans Peter GASSER, Christoph KRAUSE

Weidmann Electrical Technology AG

Neue Jonastrasse 60, CH-8640 Rapperswil-J ona, SwitzerlandPhone: +41(0)55 221 44 09, fax: +41(0)55 222 84 46, e-mail: bernhard.heinrich@wicor.com

117 -128

13.- Power Transformer End-Of-L ife Assessment Pracana Case Study

M. AUGUSTA MARTINS1, Mnica FIALHO1, J orge MARTI NS2, Mrio SOARES2,Maria CRISTINA3, R. CASTRO LOPES3, Hugo M.R. CAMPELO3

1LABELECEmail: maria.augusta@edp.pt; monica.fialho@edp.pt2Rede Elctrica Nacional, S.A. (REN)Email: jorgefilipe.martins@ren.pt;mario.soares@ren.pt3EFACEC Energia, Mquinas e Equipamentos Elctricos, S.A.Email:mcristina@efacec.com ; ricardol@efacec.com ; hugo.campelo@efacec.com

129 - 146

14.- Importance of the Design Review and the Short-Circuit Test in PowerTransformers. The Experience in Gas Natural Fenosa

Ernesto PREZ-MORENO, J oaqun GORTZAR RUBIAL

e-mail: eperez@gasnatural.com, jmgortazar@gasnatural.comHV Network Development & Quality Assurance DepartmentC/ Antonio Lpez, 193, 28026 Madrid, Spain, Phone: (+34) 915676000

147 - 155

15.- Electrical Transient Interaction Between Transformers and Power System Brazilian Experience

Anglica C. O. ROCHA

Companhia Energtica de Minas Gerais GEMIGAv Barbacena 1200/13/B1,Belo Horizonte, Minas Gerais, BrazilPhone: (+55) 31-3506-4617, fax: (+55) 31-3506-4208, e-mail:acrocha@cemig.com.br

156 - 166

16.- Causes and Mitigation of Switching Induced Destructive Transformer & BreakerInteraction

J eewan PURI

Transformer Solutions, Inc., 6700 Tree Hill Road, Matthews, NC 28104 U.S.APhone: 1 704 301 8617, e-mail: jpuri@carolina.rr.com

167 - 177

17.- Detailed and Reduced Transformers Model in FFT Simulations

Luis ROUCO

1

, Hugo GAGO

2

and Alberto PRIETO

3

1

Alberto Aguilera, 23, 28015 MadridUniversidad Pontificia Comillas

Luis.Rouco@iit.upcomillas.es2

Federico Salmn, 5, 28016 MadridIberdrola Distribucin

hgago@iberdrola.es3

Escritor Conde Zamora s/n, 14004 CrdobaABB PPT

Alberto.Prieto@es.abb.com

178 - 185

18.- The Effect of the Transformer Model on the Accuracyof the Computed Transient Voltage and Frequency Response

Robert C. DEGENEFF

Utility Systems Technologies, nc.Latham, New York, USA 12110-110Phone: (1) 518-377-8550, fax: (1) 518-374-2207, e-mail:degenr@ustpower.com

186 - 195

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19.- Frequency Domain Severy Factor (FSDF)- Transient Voltage Performance-Transformer Outside/Inside

Xose M. LOPEZ-FERNANDEZ and Casimiro ALVAREZ-MARIO

Department of Electrical Engineering, University of VigoCampus Lagoas-Marcosende, E 36310 Vigo, SpainPhone: (+34) 813478, fax: (+34) 814014, e-mail:xmlopez@uvigo.es

J acomo RAMOS, Ricardo LOPES and Duarte COUTO

EFACEC Energa, Porto, Portugal

196 - 201

20.- Fault Location on Power Transformers with Electrical Measurement Methods

Michael KRGER, Maik KOCH, Kay RETHMEIER

OMICRON EnergyOberes Ried 1, A-6833 Klaus AustriaPhone: (+43) 5523 5070, fax: (+43) 5523 507-999, e-mail:michael.krueger@omicron.at

202 - 225

21.- Dielectric Frequency Response Measurements and Dissipation FactorTemperature Dependence

Peter WEREL IUS and Matz OHLEN

Megger Sweden AB, Eldarvagen 4, 18775 Taby, SwedenPhone: (+46) 8 510 195 00, fax: (+46) 8 510 195 95, e-mail: peter.werelius@megger.com, matz.ohlen@megger

226- 236

22.- FRA Diagnostic Testing for Transformers

J ohn LAPWORTH

Doble PowerTest Ltd5 Weyvern Park, Guildford GU3 1NA, United KingdomPhone: (+44) 1483 514120, fax: (+44) 1483 514149, e-mail:jlapworth@doble.com

237 - 242

23.- Transformer Model for FRA Traces Interpretation

Carlos GONZLEZ, Carlos CASTAO and J orge PLEI TE

Universidad Carlos III de Madridcarlos.gonzalez.garcia@uc3m.es pleite@ing.uc3m.es

243 - 248

ARWtr 2010 PAPERS

24.- Development of Power Transformer Design and Simulation MethodologyIntegrated in a Software Platform

Eleftherios I. AMOIRALI S1*, Marina A. TSILI2, Antonios G. KLADAS21Department of Production Engineering & Management, Technical University of Crete, GR-73100, Chania, Greece,e-mail : eamir@tee.gr2Faculty of Electrical & Computer Engineering, National Technical University of Athens, GR-15780, Athens, Greece,e-mail : marina.tsili@gmail.com, kladasel@central.ntua.gr

250 - 255

25.- Advanced Computational Tools for Wound Core Distribution Transformer NoLoad Analysis

Themistoklis D. KEFALAS and Antonios G. KLADASSchool of Electrical and Computer Engineering, National Technical University of Athens9 Iroon Polytechneiou Street, Athens 15780, GreecePhone: (+30) 210 772 2336, fax: (+30) 210 772 2336, email:thkefala@central.ntua.gr

256 - 261

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26.- Design Review of Power Transformers: Rules for a Useful Task

Angelo FRACCHIA, Eduardo PILO DE LA FUENTE

MULTITEST 09

Labradores, 8 (28660) Boadilla del Monte (Madrid), SPAINe-mail: angelo.fracchia@multitest09.com, eduardo.pilo@multitest09.com,web: http://www.multitest09.com

262 - 267

27.- Techniques for Power Transformer Life Cycle Extension

J orge F. MARTINS,Pedro M. MONTEI RO

Substations Maintenance Department Operation Division, REN Rede Elctrica Nacional, SARua Casal dos Mogos Vermoim, 4470-259 Maia, PortugalPhone: (+351) 220011600, fax: (+351) 220011610, e-mail:jorgefilipe.martins@ren.pt

268 - 273

28.- On Line Method for Revitalizing the Solid Insulation of Power Transformers

Mircea ACIU*, Viorel MANDACHE*, Ancua ACIU**, Vladimir PANTI***, Dejan PANTI****ELECTROPUTERE S.A. Calea Bucuresti 80, Craiova, Romnia, maciu@electroputere.ro, vmandache@electroputere.ro**ICMET-Craiova, B-dul Decebal 118A, Craiova, Romnia, ancutu13@yahoo.com***VIMAP d.o.o. 137, Brae Jerkovi Str., 11000 Belgrade, Serbia, vimap@sezampro.rs

274 -278

29.- OAE (Optimized Asset Exploitation/Substanzbewirtschaftung")

Georg P. DAEMI SCH

Daemisch Transformer ConsultAlte Nrnberger Str. 32 a93059 Regensburg, GermanyPhone: +49 (0) 941 87867, fax: +49 (0) 941 87845

279 - 288

30.- New Off-L ine OLTC Diagnostic Tool

Raka LEVI and Rigel RUIZ DE LA ESCALERA LOPEZ

Montajes e Ingeneria ARCE, Madrid, Spain

289 - 293

31.- Everything You Wanted to Know About Gas in Oil AnalyseAccording ASTM 3612 / IEC 60599

Wolfgang SORGATZ

ENERGY Support GmbHSperberweg 47 41468 Neuss/GermanyPhone:+4921314039607 Mail: w.sorgatz@energy-support.de

294 - 298

32.- Transient Behavior of Power Transformers, Detail Modeling

Baudilio A. VALECILLOS P.

Weidmann Electrical Technology, Corso San Gottardo 30, Chiasso CH-6830, SwitzerlandPhone: (+41-(0)91-682-6411), fax: (+41-(0)91-682-6442), e-mail:baudilio.valecillos@wicor.com

299 - 302

33.- Study of Very Fast Transient Overvoltages and Electric Field Stresses in Air-Cored Pulsed Transformers Based on FDTD

E. Agheb1, E.HASHEM2, A.MOUSAV3, and H. K.HODALEN11 Norwegian University of Science and Technology (NTNU), Trondheim N-7491, Norway2 School of Electrical and Computer Engineering, University of Tehran3 Department of Electromagnetic Engineering, Royal Institute of Technology (KTH), Stockholm, SwedenPhone: (+47) 45051977, e-mail: edris.agheb@ntnu.no

303 - 308

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34.- Multi-Port Equivalent Scheme for Multi-Winding Traction Transformers

J oseph EL HAYEK,

University of Applied Sciences of Western Switzerland, 1705 Fribourg, Switzerland

Phone: (+34) 813478, fax: (+34) 814014, e-mail:joseph.elhayek@hefr.chTadeusz J . SOBCZYK

Cracow University of Technology, 31-155 Cracow, PolandPhone/fax: (+48) 12 628 2044, e-mail:pesobczy@cyf-kr.edu.pl

309 - 314

35.- Vibration Signal Processing of an On-load Tap Changer Using Discrete WaveletTransform

Edwin RIVAS TRUJ ILLO

Facultad de ingeniera, Universidad Distrital Francisco Jos de CaldasCarrera 7 No 40-53 Bogot-ColombiaTel.:5713239300 e-mail erivas@udistrital.edu.co

J uan C. BURGOS DIAZE.P.S Universidad Carlos II I de Madrid, Departamento de Ingeniera ElctricaC/ Butarque 15, 28911Madrid, Espaa, Tel.:+34916248853, fax +34916249430, E-mailjcburgos@uc3m.es

315 - 325

36.- Novel Method for Calculation of Losses in Foil Winding Transformers underLinear and non-L inear loads by Using Finite Element Method

S.A. MOUSAVI, G. ENGDAHL, M. MOHAMMADI*, V. NABAEI*

Department of Electromagnetic Engineering, Royal Institute of TechnonolgyTeknikringen 33, SE 10044 Stockholm, Sweden*Iran Transfo Corp., Zanjan, IranPhone: (+46) 87907742, e-mail: seyedali.mousavi@ee.kth.se

326 - 331

37.- Approaches to the Calculation of Additional Losses in Transformer WindingsM.T. VILLNA, J ess LETOSAB, Antonio NOGUSC, Rafael MURILLOCaCentre of Research for Energy Resources and Consumption, CIRCE. University of Zaragoza.mvillen@unizar.esbElectrical Engineering Department, University of Zaragoza.jletosa@unizar.escABB Transformer S.A., Zaragoza,antonio.nogues@es.abb.com,rafael.murillo@es.abb.com Phone: (+34) 976 762589. Fax: +34 976 762226

332 - 337

38.- RNM2D_0 Fast Stray Losses Hazard Evaluation on Transformer Tank Wall &Cover due to Zero Sequence

Xose M. LOPEZ-FERNANDEZ1, Casimiro ALVAREZ-MARIO1, Patricia PENABAD-DURAN11Dept. of Electrical Engineering, Universidade de Vigo, ETSEI, 36310 Vigo, Spain (e-mail:xmlopez@uvigo.es)

J anusz TUROWSKI22Retiered of Institute of Electrical Machines and Transformers, Technical University of Lodz, Lodz, Poland

338 - 343

39.- Comparison of Different Electromagnetic Models of Transformers

Kazimierz ZAKRZEWSKI

Institute of Mechatronics and Information Systems, Technical University of LodzStefanowskiego 18/22 Str., 90-924 Lodz, Poland, zakrzew@p.lodz.

344 - 347

40.- External Magnetic Field Density of Main Traction Transformer for EMU

Ivan SITAR (1), arkoJANI(2), Branimir UI(1)

(1) Konar Distribution and special transformers, d.d., Mokrovieva 8, 10090 Zagreb, Croatia Phone: (+385) 1 3873719, fax: (+385) 3794051, e-mail:ivan.sitar@koncar-dst.hr(2) Konar PowerTransformers, Ltd., Mokrovieva 6, 10090 Zagreb, Croatia

348 - 353

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41.- Transformer High Current Lead Arrangement

arkoJANI1, Zvonimir VALKOVI2, Ivan ULC31Konar PowerTransformers Ltd, J. Mokrovica 6, HR-10000 Zagreb, Croatia, zarko.janic@siemens.com2 The Polytechnic of Zagreb, Konavoska 2, HR-10000 Zagreb, Croatia, zvalkovic@tvz.hr3Konar- Electrical Engineering Institute, Fallerovo etalite 22, HR-10000 Zagreb, Croatia, ivan.sulc@koncar-institut.hr

354 - 359

42.- A Tool for the Assessment of the Electromagnetic Forces in Power DistributionTransformers

aAndrey da COSTA-LOPES, aMiguel A. SANZ-BOBI, aLuis ROUCO, aRafael PALACIOS

bLuis FLORES, bPablo CIRUJ ANOaIntitute of Technological Research-IIT, Comillas Pontifical UniversitySanta Cruz de Marcenado, 26, E 28015 Madrid, SpainPhone: (+34) 915422800, fax: (+34) 915423176, e-mail:masanz@upcomillas.esbORMAZABALPolgono El Caballo - Parcela 56, E 28890 Loeches, Madrid, Spain

Phone: (+34) 918851516, fax: (+34) 918867124

360 - 365

43.- Towards Short-Circuit Proof Design of Power Transformers

Amit BAKSHI and S. V. KULKARNI

Department of Electrical EngineeringIndian Institute of Technology, Bombay,Mumbai, IndiaPhone: (+91) 22-25767430, fax: (+91)22-25723707, e-mail:svk@ee.iitb

366 - 371

44.- 3D Heating Hazard Assessment on Transformer Covers. ArrangementDecisions

Xose M. LOPEZ-FERNANDEZ1

, Patricia PENABAD-DURAN1

and J anusz TUROWSKI2

1Department of Electrical Engineering, University of VigoCampus Lagoas-Marcosende, E 36310 Vigo, SpainPhone: (+34) 813478, fax: (+34) 814014, e-mail:xmlopez@uvigo.es2Retired of Institute of Electrical Machines and TransformersTechnical University of Lodz, Lodz, Poland

372 - 377

45.- Challenges in Design and Development of High Temperature Superconductor(HTS) Transformers for Electric Power Applications

Manglesh DIXIT*, Chetan ADALJ A*, Kuwar PAL SINGH**, Alok GUPTA** and Sundara RAJ AN***

*EMCO Limited, Plot No. F-5, Road No. 28, Wagle Industrial Estate, Thane, India 400604.**Central Electricity Authority, Ministry of Power (Gov.t of India), Sewa Bhawan, R.K. Puram, New Delhi, India-110066***Central Power Research Institute, Prof. Sir C.V. Raman Road, Sadashivanaar, Bangalore, India-560080

Phone: (+91) 22 40404576, fax: (+91) 22 25830527, email:mgdixit@emcoindia.com

378 - 381

46.- Investigation of the Thermal Behaviour of Transformers by CFD andValidation by Measurements

Andreas WEINLDER, Stefan TENBOHLEN

Institute of Energy Transmission and High Voltage Technology, University of StuttgartPfaffenwaldring 47, 70569 Stuttgart, GermanyPhone: (+49) 711/685-67838, fax: (+49) 711/685-67877, e-mail: awein@ieh.uni-stuttgart.de

382 - 387

47.- Novel Approach to Energy Efficient Grading of Distribution Transformers

Subhash KumarJOSH, Hari Om GUPTA, Pramod AGARWAL

Electrical Engineering Department, Indian Institute of Technology Roorkee, Indiaskjoshijbp@rediffmail.com, harifee@iitr.ernet.in,pramgfee@iitr.ernet.in

388 - 393

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48.- Performance Optimization of the Air-cored Pulsed Transformers

E. AGHEB, A. H. SOLOOT, and H. K. HOIDALEN

Norwegian University of Science and Technology (NTNU), Trondheim N-7491, NorwayPhone: (+47) 45051977, e-mail: edris.agheb@ntnu.no

394 - 399

49.- Manageing Transformer Failures: Asset Health Review

Hongzhi DI NG, Richard HEYWOOD, J ohn LAPWORTH & Simon RYDER

Doble PowerTest Ltd5 Weyvern Park, Guildford GU3 1NA, United KingdomPhone: (+44) 1483 514120, fax: (+44) 1483 514149, e-mail:jlapworth@doble.com

400 - 406

50.- An EPVA-Based Strategy for Power Transformers Differential Protection

L. M. R. OLIVEIRA (1) (2) and A. J . MARQUES CARDOSO(2)(1)Instituto Superior de Engenharia, Universidade do Algarve, PortugalCampus da Penha, P 8005-139 Faro, PortugalPhone: (+351) 289800100, fax: (+351) 289888405, e-mail:lolivei@ualg.pt(2)Universidade de Coimbra, FCTUC/IT, Departamento de Engenharia Electrotcnica e de Computadores, PortugalPlo II - Pinhal de Marrocos, P 3030-290 Coimbra, PortugalPhone: (+351) 239796232, fax: (+351) 239796247, e-mail:ajmcardoso@ieee.org

407 - 312

51.- Externals Factors that Can Affect the Transformer Sweep Frequency Response

APONTE G.1*, HERRERA W.1, CADAVID. H.1, BURGOS J . C.2, GARCIA A.3

1Universidad del Valle, Cl 13 100-00 Cali, Colombia.2

3 CODENSA S.A. E.S.P., Dpto. de Programacin A/T, Diag. 53 # 68 - 62 Bogot, Colombia.Universidad Carlos III, Avd. de la Universidad 30 28911 Madrid, Spain.

413 - 420

52.- Innovative On-Line Diagnostics of Transformer Feeding Non-L inear Loads

Subhash Kumar J OSHI , Pramod AGARWAL, Hari Om GUPTA

Department of Electrical Engineering, Indian Institute of Technology Roorkee, Indiaskjoshijbp@rediffmail.com, pramgfee@iitr.ernet.in, harifee@iitr.ernet.in

421 - 426

53.- Location and Recognition of Partial Discharge Sources in Power Transformersusing Acoustic Emission Method with Advanced Signal Processing

Wojciech SIKORSKI, Waldemar ZIOMEK

Department of Power Electrical Engineering, Poznan University of TechnologyPiotrowo 3A, 60-729 Poznan, PolandPhone: (+48) 616652272, fax: (+48) 616652872, e-mail:wojciech.sikorski@put.poznan.pl

427 - 432

54.- Online Condition Monitoring and Expert System for Power Transformers

K. WALCZAK*, W. SIKORSKI *, K. SIODLA*, M. ANDRZEJ EWSKI**, W. GIL***Institute of Electric Power Engineering, Poznan, University of Technology3A Piotrowo Str., 60-965 Poznan, PolandPhone: (+48) 61 6652272, fax: (+48) 61 6652872, e-mail:wojciech.sikorski@put.poznan.pl**MIKRONIKAul. Wykopy 2/4, 60-001 Poznan, Poland, Phone: (+48) 61 61 6655600, fax: (+48) 61 6655602, e-mail:biuro@mikronika.pl

433 - 438

55.- On-Line Detection and Location of Partial Discharge (PD) for ConditionDiagnosis of Power Transformers

S. M. MARKALOUS

Doble-Lemke GmbH, Zschoner Ring 9, 01723 GermanyPhone: (+49) 35204-3900 0, fax: (+49) 35204-3900 111, email: markalous@doble-lemke.eu

439 - 444

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56.- Conditioning Data for Condition Assessment of a Power Transformer

Roberto VILLAFFILA-Robles1, Marta RODRGUEZ 1, Pau LLORET1, Andreas SUMPER

Samuel GALCERAN-ARELLANO

1,21

1

E.U. dEnginyeria Tcnica Industrial de Barcelona, Electrical Engineering Department

Centre of Technological Innovation in Static Converters and Drives (CITCEA)Universitat Politcnica de Catalunya (UPC)

Comte dUrgell, 189. 08036 Barcelona (Spain)e-mail: roberto.villafafila@citcea.upc.edu2

Catalonia Institute for Energy Research (IREC)Barcelona (Spain)

445 - 450

57.- Multiagent Approach for Integral Condition Assessment of PowerTransformers using Traditional and Advanced Diagnostic Methods

J uan L. VELSQUEZ CONTRERASI, Andy HEDGECOCKII , Miguel A. SANZ-BOBI II ISamuel GALCERAN ARELLANOSIVIOMICRON Electronics GmbH, Oberes Ried 1 , A-6833 Klaus, AustriaIIOMICRON Technologies Espaa, S.L, Isla Graciosa, 1 oficina 6, E-28700 San Sebastin de los Reyes, Madrid, SpainIIIComillas Pontifical University, IIT, Santa Cruz de Marcenado 26, 28015, Madrid, SpainIV

IPhone: (+43) 5523 507 256, fax: (+43) 5523 507 7256, e-mail:Polytechnic University of Catalonia, Department of Electrical Engineering, Diagonal 647, 08028 Barcelona, Spain

juan.velasquez@omicron.atd

451 - 456

58.- Reliable and Automatic Assessment of the Frequency Response Analysis ofPower Transformers: I s it feasible?

J uan L. VELSQUEZ CONTRERASI, Andy HEDGECOCKII , Miguel A. SANZ-BOBI II I

Samuel GALCERAN ARELLANOSIVIOMICRON Electronics GmbH, Oberes Ried 1 , A-6833 Klaus, AustriaIIOMICRON Technologies Espaa, S.L, Isla Graciosa, 1 oficina 6, E-28700 San Sebastin de los Reyes, Madrid, SpainIII

Comillas Pontifical University, IIT, Santa Cruz de Marcenado 26, 28015, Madrid, SpainIVIPhone: (+43) 5523 507 256, fax: (+43) 5523 507 7256, e-mail:

Polytechnic University of Catalonia, Department of Electrical Engineering, Diagonal 647, 08028 Barcelona, Spainjuan.velasquez@omicron.at

457 - 462

59.- Air Core Model for Determining Frequency Response of Transformer Coils

Ketan BADGUJ AR, Lokesh CHADOKAR, Adit GUPTA and S. V.KULKARN

Department of Electrical EngineeringIndian Institute of Technology, BombayMumbai, IndiaPhone: (+91) 22-25767430, fax: (+91)22-25723707, e-mail: svk@ee.iitb.ac.in

463 - 468

60.- Diagnostic and Evaluation of Bushings

Bernhard HEIL

Technical Support of HSP Hochspannungsgerte GmbHCamp-Spich-Strae 18, 53842 Troisdorf, GermanyPhone: (+49) 2241 2526 206, fax: (+49) 2241 25265 206, e-mail:bernhard.heil@hspkoeln.de

469 - 473

61.- Modeling Approaches Based on FRA Tests for Simulating and Analyzing aPower Transformers Dynamic Behavior: A comparison

Gustavo H. C. OLI VEI RA*, Steven D. MITCHELL** and J ames S. WELSH**

*Department of Electrical Engineering, Federal University of ParanCuritiba/PR, Brazil, e-mail: gustavo@eletrica.ufpr.br

474 - 479

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