IEEE Catalog Number: ISBN:

CFP1013F-PRT 978-1-4244-8283-2

2010 International Conference on High Voltage Engineering and Application (ICHVE 2010)

New Orleans, Louisiana, USA 11 – 14 October 2010

ICHVE Table of Contents

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Plenary Session 1 Date: Monday, October 11, 2010 Time: 09:15 - 10:00 Room: Rhythms I Chairman: Ruijin Liao; Chongqing University, China

The TVA Transmission System: Facts, Figures and Trends ........................................................1 Clayton Clem, Jeffrey Nelson Tennessee Valley Authority, United States

Plenary Session 2 Date: Monday, October 11, 2010 Time: 10:15 - 12:00 Room: Rhythms I Chairman: Jian Li; Chongqing University, China

Overview on Transient Overvoltages and Insulation Design for a High Voltage Transmission System.....................................................................................................................12 William Sones, Sze Mei Wong Entergy Services, Inc., United States

Overview of the Transmission System in the Southern Company Area ...................................18 William McLaughlin Southern Company Services, United States

A-1 Electromagnetic Fields Date: Monday, October 11, 2010 Time: 13:30 - 15:00 Room: Rhythms I Chairman: Abderrahamane Haddad; Cardiff University, United Kingdom

Calculation of Electric Field Distribution at High Voltage Cable Terminations ........................24 Nazar Malik, Abdulrehman Al-Arainy, M.Iqbal Qureshi, Faisal Pazheri King Saud University, Saudi Arabia

Calibration of UHF Sensors for GIS: Comparison of Different Methods and Testing of a Calibration System Based on a Conical Antenna.................................................................28 David Gautschi1, Pierre Bertholet2 1AREVA T&D AG, Switzerland; 2armasuisse, Switzerland

Voltage Grading Design of UHV Surge Arresters Using 3D Transient Capacitive-Resistive Field Simulations............................................................................................................32 Hans Sjöstedt1, Lennart Stenström1, David Pusch2, Jörg Ostrowski2 1ABB AB, Sweden; 2ABB Switzerland Ltd, Switzerland

Electric Field Optimization of Floating Electrode Configuration in Vacuum Interrupter ........................................................................................................................................36 Hiroki Kojima1, Keiya Suzuki1, Hitoshi Okubo1, Katsumi Kato2 1Nagoya University, Japan; 2Niihama National College of Technology, Japan

Measurements of Radiation Field Signatures of Rocket-Triggered Lightning..........................40 Shreeharsh Mallick, Amitabh Nag, Vladimir Rakov University of Florida, United States

B-1 High Voltage Measurement Techniques - 1 Date: Monday, October 11, 2010 Time: 13:30 - 15:00 Room: Rhythms II Chairman: Orsino Oliveira Filho; CEPEL - Electric Energy Research Center, Brazil

Challenges for High Voltage Testing of UHV Equipment............................................................44 Ernst Gockenbach Leibniz Universität Hannover, Germany

Rationale for a High Voltage Test Facility ....................................................................................48 William McDermid Manitoba Hydro, Canada

The Study on the Arrangement of UWB RF Sensor-Array for the PD Location in Transformers...................................................................................................................................52 Shusheng Zheng1, Cheng-Rong Li1, Zhiguo Tang1, Wenzhi Chang1, Ru Lu2, Weiguo He2, Yiming Jiang2 1North China Electric Power University, China; 2Shanghai Municipal Electric Power Company, China

The Use of Current Transformers for Noise Detection Due to Sparking in Insulators Strings in High Voltage Transmission Lines..............................................................57 José Feliciano Adami2, Manuel Luiz Barreira Martinez3, Pedro Henrique Fonseca Bertoleti2, Ithamar Senne1 1AES Sul, Brazil; 2Universidade Estadual Paulista, Brazil; 3Universidade Federal de Itajubá, Brazil

Ultra Wide Band Response of Partial Discharge Test Circuit.....................................................61 Tadeusz Czaszejko, Shi Chen Monash University, Australia

A-2 Transients and EMC - 1 Date: Monday, October 11, 2010 Time: 15:15 - 17:00 Room: Rhythms I Chairman: Alexandre Piantini; University of São Paulo, Brazil

Deeply Suppressing Switching Overvoltage of 1000kV AC Ultra-High Voltage System (Invited) ..............................................................................................................................65 Jinliang He Tsinghua University, China

Identification of Corona Parameters on Overhead Power Lines in Case of Direct Lightning Strikes.............................................................................................................................69 Jerzy Bajorek, Grzegorz Maslowski, Robert Ziemba Rzeszow University of Technology, Poland

Identification of Key Circuit Parameters for the Initiation of Ferroresonance in a 400-kV Transmission System ........................................................................................................73 Swee Peng Ang, Jinsheng Peng, Zhongdong Wang University of Manchester, United Kingdom

Validation of Cable Models for Simulation of Transients in Shipboard Power Systems ...........................................................................................................................................77 Lukas Graber1, Diomar Infante1, Michael Steurer1, William W. Brey2 1Florida State University / Center for Advanced Power Systems, United States; 2Florida State University / National High Magnetic Field Laboratory, United States

Transformer Inrush Mitigation Using Controlled Switching of a 500-kV Circuit Breaker.............................................................................................................................................81 Paul Barnett, Jeffrey Nelson Tennessee Valley Authority, United States

Classification and Identification of Over-Voltage Based on HHT and SVM ..............................85 Jing Wang, Wenxia Sima, Qing Yang, Tao Yuan Chongqing University, China

B-2 High Voltage Insulation Systems Date: Monday, October 11, 2010 Time: 15:15 - 17:00 Room: Rhythms II Chairman: Erling Ildstad; Norwegian University of Science and Technology, Norway

Study of Creeping Discharges Propagating Over Epoxy Resin Insulators in Presence of Different Gases and Mixtures ...................................................................................89 Abderrahmane Beroual2, Mamadou Coulibaly2, Oana Aitken1, Alain Girodet1 1AREVA T&D, France; 2Ecole Centrale de Lyon / Ampère, France

Analysis of Water Solubility in Transformer Oil Using Least Square Fitting Method ..............93 Degang Gan2, Fan Liu2, Lin Du1, Yuming Liu1 1Chongqing University, China; 2Sichuan Electric Power Test and Research Institute, China

Investigation of the Effect of Conductor Temperature on AC Power Line Corona...................96 Jacobus Holtzhausen, Petrus Pieterse, Hendrik Vermeulen University of Stellenbosch, South Africa

Improvement of Cu-Cr Electrode Surface Under Impulse Voltage Conditioning in Vacuum ..........................................................................................................................................100 Hiroki Kojima2, Hideaki Yasukawa2, Ryouki Nishimura2, Hitoshi Okubo2, Hiromasa Sato1, Hitoshi Saito1, Yasushi Noda1 1Japan AE Power Systems Corporation, Japan; 2Nagoya University, Japan

Long Gap Breakdown of Natural Ester Fluid..............................................................................104 Kevin Rapp1, C. Patrick McShane1, John Vandermaar2, Dejan Vukovic3, Stefan Tenbohlen3 1Cooper Power Systems, United States; 2Powertech Labs Inc., Canada; 3Universitat Stuttgart, Germany

Field Characteristics and Dielectric Tests on an IGBT Module Plate ......................................108 Sandra Jany1, Arne Nysveen1, Stian Ingebrigtsen2 1Norwegian University of Science and Technology, Norway; 2SINTEF, Norway

A-3 Transients and EMC - 2 Date: Tuesday, October 12, 2010 Time: 08:15 - 10:00 Room: Rhythms I Chairman: Jinliang He; Tsinghua University, China

Occurrence of New Upward Positive Leaders Triggered by Negative Downward CG Lightning........................................................................................................................................112 Gerard Berger1, Louis-Jonardan Gallin1, Sonia Ait-Amar2 1CNRS, Paris XI University, SUPELEC, France; 2IUT de Béthune, France

Statistical Modeling of the Process of Lightning Attachment to Extended Objects ..............116 Marina Rezinkina2, Oleg Rezinkin3, Sajal Chalise1, Harshul Gupta1, Christopher Bean1 1Alltec Corporation, United States; 2Center of Magnetism of Technical Objects, Ukraine; 3National Technical University KPI, Ukraine

Laboratory Investigation on Lightning Flashes to High Voltage Transmission Lines...............................................................................................................................................120 Thongchai Disyadej1, Stanislaw Grzybowski2 1Electricity Generating Authority of Thailand, Thailand; 2Mississippi State University, United States

Time-Frequency Analysis of Very Fast Transient Over Voltages for Effective Shielding of Control Circuits in a 245kV Gas Insulated Substation.........................................124 V G Rama Rao Jonnakuti1, Amarnath J.2, Kamakshaiah S.2 1Jawaharlal Nehru Technological University, Hyderabad, India; 2Vignan Engineering College, Hyderabad, India

Simulation and Experimental Method for the Suppressing of Very Fast Transient Over Voltages in a 245kV GIS Using Ferrite Rings ....................................................................128 V G Rama Rao Jonnakuti1, Amarnath J.2, Kamakshaiah S.2 1Jawaharlal Nehru Technological University, Hyderabad, India; 2Vignan Engineering College, Hyderabad, India

Waveform and Location Analyses of Localised Lightning Locating System .........................132 Zulkurnain Abdul-Malek3, Zuraimy Adzis4, Sayuti Aulia2, Yusoff Novizon2, Noradlina Abdullah1 1TNB Research Sdn Bhd, Malaysia; 2Universitas Andalas, Indonesia; 3Universiti Teknologi Malaysia, Malaysia; 4Universiti Teknologi Malaysia / IVAT, Malaysia

B-3 High Voltage Cable Insulation Date: Tuesday, October 12, 2010 Time: 08:15 - 10:00 Room: Rhythms II Chairman: Abderrahmane Beroual; Ecole Centrale de Lyon, France

Quality Control of Extruded HVDC Cables: Low Frequency Endurance Testing of Model Cables with Contaminations.............................................................................................136 Frank Mauseth1, Erling Ildstad1, Mildrid Selsjord2, Rolf Hegerberg2 1Norwegian University of Science and Technology, Norway; 2SINTEF, Norway

On-Site Testing and Diagnosis of New and Serviced Aged HV Power Cables - Evaluation Based on Diagnostic Parameters.............................................................................140 Lukasz Chmura, Piotr Cichecki, Edward Gulski, Johan Smit Delft University of Technology, Netherlands

Performance of Cables and Machines Insulation at Various Parameters of Impulse Stimulus.........................................................................................................................................144 Barbara Florkowska2, Pawe1 Zydron2, Józef Roehrich2, Marek Florkowski1 1ABB Corporate Research, Poland; 2AGH University of Science and Technology, Poland

Electrical Aging of 15 kV EPR Cable Energized by AC Voltage with Switching Impulses Superimposed...............................................................................................................148 Linfeng Cao, Anand Zanwar, Balaji Pushpanathan, Stanislaw Grzybowski Mississippi State University, United States

Interfacial Roughness on Tracking Failure in XLPE HV Cable Joint .......................................156 Boxue Du2, Liang Gu2, Xiangjin Zhang1 1Tianjin Professional University, China; 2Tianjin University, China

A-4 Transients and EMC - 3 Date: Tuesday, October 12, 2010 Time: 10:15 - 12:00 Room: Rhythms I Chairman: Gerard Berger; National Center for Scientific Research, France

Utilization of Reduced Models for the Analysis of Lightning Induced Overvoltages on Overhead Lines........................................................................................................................160 Alexandre Piantini, Jorge Janiszewski, Celso Braz Universidade de São Paulo, Brazil

Finite Element Modeling of the Grounding System in Consideration of Soil Nonlinear Characteristic...............................................................................................................164 Jingli Li, Tao Yuan, Qing Yang, Wenxia Sima, Caixin Sun Chongqing University, China

Initial Voltage Distributions in Transformer Windings at Ultra Fast Stresses ........................168 Marek Florkowski1, Jakub Furgal2 1ABB Corporate Research, Poland; 2AGH University of Science and Technology, Poland

Complexity of Ferroresonance Phenomena: Sensitivity Studies from a Single-Phase System to Three-Phase Reality ........................................................................................172 Rui Zhang, Swee Peng Ang, Haiyu Li, Zhongdong Wang University of Manchester, United Kingdom

Modeling Induced Voltages on Ends of Suspended Conductor to Locate Nearby Lightning........................................................................................................................................176 Zuraimy Adzis3, Zulkurnain Abdul Malek2, Hussein Ahmad2, Aulia Aulia1 1Universitas Andalas, Indonesia; 2Universiti Teknologi Malaysia, Malaysia; 3Universiti Teknologi Malaysia / IVAT, Malaysia

The Effects of Prolonged Exposure of Paper Insulation to Fast Repeating Transients......................................................................................................................................180 Tomasz Koltunowicz, Gautam Bajracharya, Dhiradj Djairam, Muhannad Al-Suhaily, Johan Smit Delft University of Technology, Netherlands

B-4 High Voltage Insulation for UHV Systems Date: Tuesday, October 12, 2010 Time: 10:15 - 12:00 Room: Rhythms II Chairman: William McDermid; Manitoba Hydro, Canada

Design of an All-Dielectric Self-Supporting Cable System .......................................................184 Kumaraguru Prabakar, George Karady Arizona State University, United States

HVDC System Performance with a Neutral Conductor .............................................................188 Voislav Jankov, Mark Stobart Teshmont Consultants LP, Canada

System and Technology Comparison of UHV Transmission Concepts ..................................192 Denis Imamovic, Thomas Kern, Michael Muhr Graz University of Technology, Austria

Comparison of AC Pollution Flashover Performances for Composite Insulators with Different Configuration Under Low Atmospheric Pressure..............................................200 Lichun Shu, Xingliang Jiang, Qianfei Yuan, Qin Hu, Zhangang Yang Chongqing University, China

Poster 1 Date: Tuesday, October 12, 2010 Time: 13:30 - 15:00 Room: Rhythms III Chairman: Clayborne Taylor; Mississippi State University, USA

Time-Frequency Characteristics of Electromagnetic Interference in 500kV Switch Operation .......................................................................................................................................208 Xiaojian Li, Yao Zhong, Ren Wang YunNan Electric Power Research Institute, China

Partial Discharge Severity Diagnosis and Assessment: a Case of High-Voltage Electrode Defect in GIS ................................................................................................................212 Bo Qi2, Cheng-Rong Li2, Bibo Geng2, Zhen Hao2, Jinxiang Chen1, Hao You1, Yihong Lin1 1Fujian Electric Power Test and Research Institute, China; 2North China Electric Power University, China

Analysis of Diagnostic Methods to Prevent Failure of Critical GIS Components...................220 Muhannad Al-Suhaily1, Sander Meijer1, Johan Smit1, Peter Sibbald2, Jos Kanters2 1Delft University of Technology, Netherlands; 2TenneT TSO B.V., Netherlands

Characteristics of Electrical Discharge Evolving in an Environment Protected by a Vertical Rod ...................................................................................................................................224 Djazia Khelil, Slimane Bouazabia, Lakhdar Aggoune, Sofiane Haddou University of Science and Technologie Houari Boumediene, Algeria

Analysis on Influencing Factors to Properties of UHF Hilbert Fractal Antenna .....................228 Ting Cui, Wei Lin, Hua Yin, Gaolin Wu Chongqing Electric Power Test and Research Institute, China

Design of Fiber Bragg Grating Load Sensor Used in Ice Monitoring on Overhead Transmission Lines ......................................................................................................................232 Guo-Ming Ma, Cheng-Rong Li, Jian Jiang, Jiang-Tao Quan, Yang-Chun Cheng North China Electric Power University, China

Research and Implementation of on-Line Monitoring Techniques for High Voltage Equipments in Smart Grid............................................................................................................236 Degang Gan2, Fan Liu2, Lin Du1, Yuming Liu1 1Chongqing University, China; 2Sichuan Electric Power Test and Research Institute, China

A Novel Fiber Bragg Grating Tension Sensor for Ground Conductor.....................................240 Guo-Ming Ma, Cheng-Rong Li, Jian Jiang, Jiang-Tao Quan, Chen-Ping Meng, Yang-Chun Cheng North China Electric Power University, China

Ultra-Low Power Wireless-Online-Monitoring Platform for Transmission Line in Smart Grid......................................................................................................................................244 Bojie Sheng, Wenjun Zhou Wuhan University, China

High Voltage Magnitude Measurement from Corona Sound by Using Neural Network..........................................................................................................................................248 Suna Bolat Sert, Özcan Kalenderli Istanbul Technical University, Turkey

High Frequency Magnetic and Electric Field Measurements and Simulation of a 245kV GIS.......................................................................................................................................252 V G Rama Rao Jonnakuti1, Amarnath J.2, Kamakshaiah S.2 1Jawaharlal Nehru Technological University, Hyderabad, India; 2Vignan Engineering College, Hyderabad, India

Using Fiber Bragg Grating Sensor on Ice Monitoring on Electric Power Transmission Lines, Part I: the Measurement of the Temperature ..........................................256 Yang-Chun Cheng, Xiao Tian, Jian Jiang, Cheng-Rong Li North China Electric Power University, China

Investigation of PD Occurrence and Detectability in High Voltage Power Cable Accessories...................................................................................................................................264 Piotr Cichecki, Jarot Stewayan, Edward Gulski, Johan Smit, Lukasz Chmura Delft University of Technology, Netherlands

Corona Ring Optimization for V-Insulator String on the Point of RIV and AC Flashover Performance ................................................................................................................268 Suat Ilhan, Aydogan Ozdemir Istanbul Technical University, Turkey

Response Characteristics of Partial Discharge Pulses According to the Length of the Signal Lines.............................................................................................................................272 Jeongtae Kim2, Jihong Kim1 1Calvus Instrument, Korea, South; 2Daejin University, Korea, South

Partial Discharge Identification in 3-Phase Simultaneous Detection for Power Cables ............................................................................................................................................275 Jeongtae Kim2, Jaecheol Jeong2, Jihong Kim1 1Calvus Instrument, Korea, South; 2Daejin University, Korea, South

Electric Field Measurements Around a Metal Oxide Surge Arrester .......................................278 C.A. Spanias, Christos Christodoulou, Ioannis F. Gonos, Ioannis A. Stathopulos National Technical University of Athens, Greece

A Simple Method to Assess Ice Built-Up Severity in EHV Substations...................................282 Christophe Volat2, Fethi Meghnefi1, Masoud Farzaneh1 1Université du Québec à Chicoutimi, Canada; 2Université du Québec à Chicoutimi - ISOLIME, Canada

Investigation of the Relationship Between PD Measured with RF Techniques and Apparent Charge Quantity of Metal Protrusion in Air ...............................................................286 Xiaoxing Zhang, Ju Tang, Yanbin Xie Chongqing University, China

Application of Sleeve Monopole Antenna for Partial Discharge Detection in Transformer...................................................................................................................................293 Xincai Zheng2, Haijun Cao2, Ju Tang1, Xiaoxing Zhang1 1Chongqing University, China; 2Shangqiu Power Supply Company, China

PD Pattern Recognition Based on Linear Discriminant Analysis for GIS ...............................297 Mengchao Li2, Xun Liu2, Xiaoxing Zhang1 1Chongqing University, China; 2Shangqiu Power Supply Company, China

Simulation of Transient Earth Voltages Aroused by Partial Discharge in Switchgears...................................................................................................................................309 Yinwei Li1, Youyuan Wang1, Guojun Lu2, Jin Wang2, Jun Xiong2 1Chongqing University, China; 2Guangdong Power Grid Corporation, China

PD Pattern Recognition in Oil-Paper Insulation Based on Discharge Time Interval ..............313 Quan Zhou2, Yun Zhang3, Wendou An1, Fan Liu3, Ruijin Liao2, Xin Zhang2 1Chongqing Branch of China Coal Research Institute, China; 2Chongqing University, China; 3Sichuan Electric Power Test and Research Institute, China

Test Procedure and Test Circuit Considerations for on Load Tap Changer Dynamic Resistance Measurement .............................................................................................317 Jur Erbrink1, Edward Gulski1, Johan Smit1, J. Aditya1, Lukasz Chmura1, Rory Leich2, Paul Seitz3, Ben Quak3 1Delft University of Technology, Netherlands; 2Liandon, Netherlands; 3Seitz Instruments AG, Switzerland

Poster 2 Date: Tuesday, October 12, 2010 Time: 15:15 - 17:00 Room: Rhythms III Chairman: Clayborne Taylor; Mississippi State University, USA

Life Management of 550kV SF6 Circuit Breakers.......................................................................321 Xiang Zhang2, Ernst Gockenbach2, Haibo Chen1, Zhaolin Liu1, Linghui Yang1, Kai Gao1, Chenzhao Fu1 1East China Electric Power Test and Research Institute Co. Ltd., China; 2Leibniz Universität Hannover, Germany

Mechanism of Electrical Discharge Development in Transformer Oil in the Setup of Insulated Electrodes.....................................................................................................................325 Pawel Rozga Technical University of Lodz, Poland

Prediction of Flashover Voltage Based on Leakage Current Under AC Operating Voltage ...........................................................................................................................................329 Hongwei Mei2, Yingke Mao1, Liming Wang2, Zhicheng Guan2 1Shanghai EHV T&D Company, China; 2Tsinghua University, China

Static Electrification Assessment of Transformer Oils in the Spinning Disc System............337 Youssef Bouslimi1, Issouf Fofana2, Hossein Hemmatjou1, Christophe Volat2 1ISOLIME - Université du Québec à Chicoutimi, Canada; 2Université du Québec à Chicoutimi - ISOLIME, Canada

Test Method of Composite Insulators Aged in High Voltage Rain Chamber ..........................341 Witold Bretuj, Janusz Fleszynski, Krzysztof Wieczorek Wroclaw University of Technology, Poland

Research on the Optimization of UHV AC Composite Insulators' Shed..................................345 Chu-yan Zhang, Liming Wang, Zhi-dong Jia, Zhicheng Guan Tsinghua University, China

A Set-Up to Apply Very-Fast Transients in Power Transformers.............................................357 Helvio Martins, Leonardo Torres B Santos CEPEL - Electric Power Research Center, Brazil

Interaction Between Test Circuit for Generation of Secondary Arcs and Short-Circuit Test Transformer ..............................................................................................................361 Helvio Martins, Cintia Ferreira, Walter Cerqueira, Carlos Magno Vasques, Mauro Trindade CEPEL - Electric Power Research Center, Brazil

Diagnostic of Silicon Carbide Surge Arresters ..........................................................................365 Arnaldo Kanashiro2, Hedio Tatizawa2, Milton Zanotti Jr.2, Paulo Obase2, Wilson Bacega1 1Companhia de Transmissão de Energia Elétrica Paulista, Brazil; 2Universidade de São Paulo, Brazil

Electrical Treeing in Extruded Polypropylene High Voltage Cable Insulation........................373 Jorunn Holto, Erling Ildstad Norwegian University of Science and Technology, Norway

Positive Streamer Propagation and Breakdown Characteristics in Non-Uniform Air Gap .................................................................................................................................................377 Takeshi Iwata2, Hitoshi Okubo2, Hiroki Kojima2, Naoki Hayakawa2, Fumihiro Endo2, Norihito Yanagita1, Tatsuro Kato1, Toshiaki Rokunohe1 1Hitachi, Ltd, Japan; 2Nagoya University, Japan

Influence of Vegetable Oil on the Thermal Aging Rate of Kraft Paper and its Mechanism.....................................................................................................................................381 Lijun Yang, Ruijin Liao, Caixin Sun, Jianguo Yin, Mengzhao Zhu Chongqing University, China

Comparison of AC Pollution Flashover Performance of Insulators in Chamber with High Altitude Spots.......................................................................................................................385 Zhijin Zhang, Haizhou Huang, Xingliang Jiang, Jianlin Hu, Caixin Sun Chongqing University, China

Research on the Dielectric Properties and Breakdown Voltage of Transformer Oil-Paper Insulation After Accelerating Thermal Ageing ................................................................389 Chao Tang, Ruijin Liao, Lijun Yang, Fei-Long Huang Chongqing University, China

Comparative Evaluation of Aging of Insulating Material in Natural Ester and Mineral Oil......................................................................................................................................393 Myeong Seop Shim Inha University, Korea, South

Partial Discharge Inception of Interface Voids Versus Mechanical Surface Pressure.........................................................................................................................................397 Majid Hasheminezhad, Erling Ildstad Norwegian University of Science and Technology, Norway

A Comparative Study on DC Flashover Characteristics of Iced Insulators with Various Electrial Test Methods....................................................................................................405 Jianlin Hu, Xingliang Jiang, Caixin Sun, Mingying Chen, Zhijin Zhang, Lichun Shu Chongqing University, China

Analysis of Infrared Spectrum Characteristic and Variation Trend of SF6 PD Decomposition ..............................................................................................................................409 Fan Liu2, Degang Gan2, Siyu Zhou2, Can Hu2, Ping Liu2, Xiaoxing Zhang1 1Chongqing University, China; 2Sichuan Electric Power Test and Research Institute, China

Optimization of Dielectric Strength Test for the Selection of Insulating Compounds for Underground Powercables.....................................................................................................413 Adrian González Parada2, Rafael Guzmán Cabrera2, Alejandro Castañeda Miranda3, Luis del Llano Viscaya1 1CIDESI, Mexico; 2Guanajuato University, Mexico; 3Queretaro Poltechnic University, Mexico

Effect of Atmospheric Parameters on AC Corona Onset Voltage of Conductors ..................417 Qin Hu, Lichun Shu, Xingliang Jiang, Zhijin Zhang, Jianlin Hu Chongqing University, China

Characteristic Parameters and Development Properties of Air-Gap Discharge in Oil-Paper Insulation ......................................................................................................................421 Weigen Chen1, Xi Chen1, Jun Tang2 1Chongqing University, China; 2Zigong Electric Power Bureau, China

DC Breakdown Voltage Characteristics of Small Air Gaps with Insulating Barriers in Non-Uniform Field.....................................................................................................................425 Alper Kara, Özcan Kalenderli, Kevork Mardikyan Istanbul Technical University, Turkey

Condition Assessment of on Load Tap Changers Using Dynamic Resistance Measurements...............................................................................................................................433 Jur Erbrink1, Edward Gulski1, Johan Smit1, Lukasz Chmura1, Rory Leich2, Paul Seitz3, Ben Quak3 1Delft University of Technology, Netherlands; 2Liandon, Netherlands; 3Seitz Instruments AG, Switzerland

A-5 Outdoor Insulation - 1 Date: Wednesday, October 13, 2010 Time: 08:15 - 10:00 Room: Rhythms I Chairman: George Karady; Arizona State University, USA

Mathematical Model to Predict Flashover Voltages of Polluted Polymeric Insulators Intended for UHV DC ..................................................................................................437 Pradipkumar Dixit3, Krishnan V2, Nagabhushana G.R.1 1Indian Institute of Science, India; 2M. S. Ramaiah Institute of Technology, India; 3Sri Bhagawan Mahaveer Jain Ccollege of Engineering, India

Measurement and Modelling of Partial Discharge Behaviour in a Spherical Cavity Within a Solid Dielectric Material As a Function of Applied Voltage Amplitude.....................441 Hazlee Illias, George Chen, Paul Lewin University of Southampton, United Kingdom

Insulator Aging Tests with HVAC and HVDC Excitation Using the Tracking Wheel Tester .............................................................................................................................................445 Jacobus Holtzhausen2, Petrus Pieterse2, Hendrik Vermeulen2, Sepo Limbo1 1Nampower, South Africa; 2University of Stellenbosch, South Africa

Radiated Electromagnetic Field Signature of Faulty and Polluted Porcelain Insulators.......................................................................................................................................449 Ehsan Azordegan2, Behzad Kordi2, David Swatek1 1Manitoba Hydro, Canada; 2University of Manitoba, Canada

Accelerated Weathering of Distribution Class Polymeric Insulators.......................................453 Joy Thomas Meledath, Venkatesulu Bandepalle Indian Institute of science, India

Influence of Contamination on Deteriorated Insulators Detection with Infrared Imaging Method.............................................................................................................................457 Xingliang Jiang, Qiangfeng Xia Chongqing University, China

B-5 Grounding Systems Date: Wednesday, October 13, 2010 Time: 08:15 - 10:00 Room: Rhythms II Chairman: Marek Florkowski; ABB Corporate Research, Poland

Uncertainty of Soil Breakdown Voltage ......................................................................................461 Fani Asimakopoulou, Ioannis F. Gonos, Ioannis A. Stathopulos National Technical University of Athens, Greece

Experimental Investigation Into the Performance of Large-Scale Earthing Electrodes......................................................................................................................................465 Dongsheng Guo1, Deepak Lathi1, Noureddine Harid1, Huw Griffiths1, Abderrahamane Haddad1, Alan Ainsley2 1Cardiff University, United Kingdom; 2National Grid, United Kingdom

Experimental Investigation of the Impulse Characteristics of Practical Ground Electrode Systems........................................................................................................................469 Abderrahamane Haddad, Huw Griffiths, Mohamad Ahmeda, Noureddine Harid Cardiff University, United Kingdom

Study on Grounding Design for Lightning of Tubular Composite Material Towers in 110kV Overhead Transmission Line .......................................................................................473 Zhijun Li2, Han-Ming Li1, Min Dai2, Shi-Cong Deng1, Ding-xie Gu2, Qian-Hu Wei1 1Guangdong Power Grid Corporation, China; 2State Grid Electric Power Research Institute, China

Assessment of Substation Fence Earthing ................................................................................477 Nurul Azlina Abd. Rahman2, Aziz Marzuki Ahmad Marican1 1DCS Engineering Sdn. Bhd., Malaysia; 2TNB Research Sdn Bhd, Malaysia

A-6 Outdoor Insulation - 2 Date: Wednesday, October 13, 2010 Time: 10:15 - 12:00 Room: Rhythms I Chairman: Masoud Farzaneh; University of Quebec in Chicoutimi, Canada

Dynamics of Water Drops on Metal and Insulator Surfaces Submitted to AC Voltage ...........................................................................................................................................481 Adolphe Moukengué Imano2, Abderrahmane Beroual1 1Ecole Centrale de Lyon / Ampère, France; 2University of Douala, France

The Use of Booster Sheds to Improve the Performance of 800 kV Multicone Type Insulators Under Heavy Rain .......................................................................................................485 Orsino Oliveira Filho1, José Antonio Cardoso1, Darcy Ramalho de Mello1, Rogério Magalhães de Azevedo1, Sylvia G. Carvalho2 1CEPEL - Electric Power Research Center, Brazil; 2Eletrobras Furnas, Brazil

Icing Performances of Super-Hydrophobic PDMS/Nano-Silica Hybrid Coating on Insulators.......................................................................................................................................489 Yushun Zhao1, Jian Li1, Jianlin Hu1, Stanislaw Grzybowski2 1Chongqing University, China; 2Mississippi State University, United States

A New Mathematical Model for Flashover Voltages of Polluted Porcelain Insulators ...........493 Pradipkumar Dixit3, Krishnan V2, Nagabhushana G.R.1 1Indian Institute of Science, India; 2M. S. Ramaiah Institute of Technology, India; 3Sri Bhagawan Mahaveer Jain Ccollege of Engineering, India

Performance of Silicone Rubber Insulators Under Acid Rain + Multistress Conditions .....................................................................................................................................497 Muhammad Amin2, Raji Sundararajan1 1Purdue University, United States; 2University of Engineering and Technology, Pakistan

Modelling of Temporal Temperature and Pressure Change Due to Partial Discharge Events Within a Spherical Cavity in a Solid Dielectric Material Using Finite Element Analysis................................................................................................................501 Hazlee Illias, George Chen, Paul Lewin University of Southampton, United Kingdom

B-6 New Features & Special Interests in HVE Date: Wednesday, October 13, 2010 Time: 10:15 - 12:00 Room: Rhythms II Chairman: Jeffrey H. Nelson; Tennesse Valley Authority, USA

Long Distance Underground HVDC Transmission via Elpipes ................................................505 Roger Faulkner, Ron Todd Electric Pipeline Corporation, United States

Fault Nature Identification for Single-Phase Adaptive Reclosure on Double Circuit EHV Transmission Lines with Shunt Reactors ..........................................................................509 Liqun Shang Xi'an University of Science & Technology, China

High Voltage Series-Compensated Transmission Line - Evaluation of New Distance Protection ......................................................................................................................513 Eugeniusz Rosolowski3, Jan Izykowski3, Piotr Pierz3, Marek Fulczyk2, Przemyslaw Balcerek2, Murari Mohan Saha1 1ABB AB, Sweden; 2ABB Corporate Research, Poland; 3Wroclaw University of Technology, Poland

Dielectric Barrier Discharge Plasma Interaction with the Airflow Over an Airfoil ..................517 Pradeep Moise, Joy Thomas Meledath, Joseph Mathew, Kartik Venkatraman Indian Institute of Science, India

The Expert Transformer Monitoring System in Substation Structure .....................................524 Wieslaw Gil, Wlodzimierz Grzybowski, Przemyslaw Wronek Mikronika, Poland

A-7 Outdoor Insulation - 3 Date: Wednesday, October 13, 2010 Time: 13:30 - 15:00 Room: Rhythms I Chairman: Raji Sundararajan; Purdue University, USA

Influence of Non Uniformity of Pollution Thickness on Insulator Flashover Under Impulse Voltage.............................................................................................................................528 Mohammed El-Amine Slama1, Abderrahmane Beroual2, Hocine Hadi3 1Ecole centrale de Lyon, France; 2Ecole Centrale de Lyon / Ampère, France; 3University of Sciences and Technology of Oran, Algeria

Inclined-Plane Tests of Textured Silicone Rubber Samples.....................................................532 Partha Sarkar, Abderrahamane Haddad, Ronald Waters, Huw Griffiths, Noureddine Harid, Panagiotis Charalampidis Cardiff University, United Kingdom

Non-Destructive Test Methods for Hollow-Core Composite Insulators ..................................536 Armin Merten Reinhausen Power Composites GmbH, Germany

Influence of Composite Insulator Operating Position on the Development of Aging Process Under AC High Voltage and Water Precipitation ........................................................540 Witold Bretuj, Krzysztof Wieczorek Wroclaw University of Technology, Poland

B-7 High Voltage Measurement Techniques - 2 Date: Wednesday, October 13, 2010 Time: 13:30 - 15:00 Room: Rhythms II Chairman: Michael Muhr; Graz University of Technology, Austria

The Influence of a Compact Test Circuit in the Puncture Test.................................................544 Darcy Ramalho de Mello, José Antonio P. Rodrigues, José Antonio D'Affonseca Cardoso, Francisco de Assis A. F. Vieira CEPEL - Electric Power Research Center, Brazil

Experimental Investigation on Altitude Correction Factor of Positive DC Corona Inception Voltages of Transmission Lines Based on the Mobile Corona Cage......................548 Xing-Ming Bian2, Liming Wang2, Zhicheng guan2, Jing Cao3, Yingjian Yang1, Xiong Wu1 1State Grid Electric Power Research Institute, China; 2Tsinghua University, China; 3Wuhan University & State Grid Electric Power Research Institute, China

Noise Reduction on Partial Discharge Data with Wavelet Analysis and Appropriate Thresholding .................................................................................................................................552 Ozkan Altay, Özcan Kalenderli Istanbul Technical University, Turkey

Lightning Current Measurement by Multi-Turn Differential Loop ............................................556 Chenguo Yao, Qianbo Xiao, Yan Mi, Chengxiang Li, Ximing Zhang Chongqing University, China

A-8 New Insulation Materials Date: Wednesday, October 13, 2010 Time: 15:15 - 17:00 Room: Rhythms I Chairman: Hitoshi Okubo; Nagoya University, Japan

Comparative Study of Streamer Phenomena in Mineral, Synthetic and Natural Ester Oils Under Lightning Impulse Voltage ..............................................................................560 Viet-Hung Dang2, Abderrahmane Beroual2, Christophe Perrier1 1AREVA T&D Power Transformers, France; 2Ecole Centrale de Lyon / Ampère, France

Effect of Electrical Discharge on Oil Decaying Process ...........................................................564 Janvier Sylvestre N'cho1, Thomas Aka-Ngnui1, Abderrahmane Beroual1, Issouf Fofana2 1Ecole Centrale de Lyon / Ampère, France; 2Université du Québec à Chicoutimi - ISOLIME, Canada

Dielectric Characteristics of New Nano-Composite Industrial Materials.................................568 Ahmed Mohamed Thabet, Youssef A. Mobarak South Valley University, Egypt

Research on Composite Material Towers Used in 110kV Overhead Transmission Lines...............................................................................................................................................572 Han-Ming Li1, Shi-Cong Deng1, Qian-Hu Wei1, Yu-Ning Wu1, Qi-Qi Xiang2 1Guangdong Power Grid Corporation, China; 2Shenzhen New Energy Electric Development & Design Institute Co, Ltd, China

Electrical Treeing in Polyethylene: Effect of Nano Fillers on Tree Inception and Growth............................................................................................................................................576 Joy Thomas Meledath, Alapati Sridhar Indian Institute of Science, India

Suitability of Thermoplastic Polymer Used As Insulator for HV Apparatuses........................580 Yannick Kieffel1, Alain Girodet1, Karsten Pohlink1, Salima Bouti2, Dimitri Beauguitte3 1AREVA T&D, France; 2Nancy Université, France; 3Université de Montpellier 2, France

B-8 Aging of Insulation Date: Wednesday, October 13, 2010 Time: 15:15 - 17:00 Room: Rhythms II Chairman: Issouf Fofana; University of Quebec in Chicoutimi, Canada

Analysis of Overvoltage on Motor Winding Insulation Fed by PWM Pulses...........................584 Romuald Wlodek, Józef Roehrich, Pawe1 Zydron AGH University of Science and Technology, Poland

Improvement on the Anti-Aging Properties of Power Transformers by Using Mixed Insulating Oil .................................................................................................................................588 Ruijin Liao, Jian Hao, Lijun Yang, Shuaiwei Liang, Jianguo Yin Chongqing University, China

Influence of Serial Choke on Damping of Switching Transients in Distribution Transformers.................................................................................................................................592 Jakub Furgal3, Marek Florkowski1, Marek Fulczyk1, Pawe1 Klys2, Magdalena Ostrogórska1, Wojciech Piasecki1 1ABB Corporate Research, Poland; 2ABB Distribution Transformers, Poland; 3AGH University of Science and Technology, Poland

Analysis and Comparison of Aging-Trends of Cellulose for Transformers with Oil-Cellulose-Insulation......................................................................................................................596 Christoph Kuen Siemens Transformers Austria, Austria

Simulation and Improvement of the Voltage Sag Performance of a Distribution System ...........................................................................................................................................600 Gilvan Vieira de Andrade Junior, Sreeramulu Raghuram Naidu, Edson Guedes Da Costa Universidade Federal de Campina Grande, Brazil

A-9 Reliability & Maintenance - 1 Date: Thursday, October 14, 2010 Time: 08:15 - 10:00 Room: Rhythms I Chairman: Zhicheng Guan; Tsinghua University, China

Reliability and Failure Analysis of Porcelain High-Voltage Surge Arresters ..........................604 James Rossman, Jeffrey Nelson, Mark Droke Tennessee Valley Authority, United States

Power Transformer Multi-Parameter Fault Fusion Diagnosis Method.....................................608 Lin Du, Lei Yuan, Youyuan Wang Chongqing University, China

Evaluation and Diagnosis Technique for Surge Arresters .......................................................614 Helvio Martins1, Flávio B. Barbosa1, Waldenir Cruz2 1CEPEL - Electric Power Research Center, Brazil; 2Eletrobras Furnas, Brazil

Underground Cable Fault Detection and Identification via Fourier Analysis..........................618 Abhishek Pandey, Nicolas Younan Mississippi State University, United States

Study of Dynamic Response of Overhead Transmission Lines to Different Wind Speeds ...........................................................................................................................................622 Baoqiang Sun2, Lei Hou1, Guanjun Fu2, Xiaobo Meng2, Zhicheng Guan2, Liming Wang2 1State Grid Corporation of China, China; 2Tsinghua University, China

Criticality Assessment of GIS Components ...............................................................................626 Muhannad Al-Suhaily1, Sander Meijer1, Johan Smit1, Peter Sibbald2, Jos Kanters2 1Delft University of Technology, Netherlands; 2TenneT TSO B.V., Netherlands

B-9. Online Condition Monitoring - 1 Date: Thursday, October 14, 2010 Time: 08:15 - 10:00 Room: Rhythms II Chairman: Dries Wolmarans; Xamax Electrical SA (Pty) Ltd, Republic of South Africa

Online Partial Discharge Measurement of a High-Voltage Direct Current Converter Wall-Bushing .................................................................................................................................630 Nathan Jacob2, William McDermid1, Behzad Kordi3 1Manitoba Hydro, Canada; 2Manitoba Hydro / University of Manitoba, Canada; 3University of Manitoba, Canada

Recognition on Ultra-High-Frequency Signals of Partial Discharge by Support Vector Machine..............................................................................................................................634 Tianyan Jiang1, Jian Li1, Mingying Chen1, Stanislaw Grzybowski2 1Chongqing University, China; 2Mississippi State University, United States

On-Line Supervision of Transformer on-Load Tap Changer ....................................................642 Wieslaw Gil, Wlodzimierz Grzybowski, Przemyslaw Wronek Mikronika, Poland

Detecting Oil Dissolved Gases Using Carbon Nanotubes Sensor...........................................645 Tao Chang, Xiaoxing Zhang, Wangting Liu, Caixin Sun Chongqing University, China

Performance Analysis of Modified Shifted Current Method for Surge Arrester Condition Monitoring....................................................................................................................649 Zulkurnain Abdul-Malek2, Novizon Yusoff1, Mohd Fairouz Mohd Yousof3 1Universitas Andalas, Indonesia; 2Universiti Teknologi Malaysia, Malaysia; 3Universiti Tun Hussein Onn Malaysia, Malaysia

A-10 Reliability & Maintenance - 2 Date: Thursday, October 14, 2010 Time: 10:15 - 12:00 Room: Rhythms I Chairman: Romuald Wlodek; University of Science and Technology, Poland

Requirements and Calculating Methods for Maximum Insulated Conductor Temperatures in Oil-Immersed Transformers ............................................................................653 Taosha Jiang2, Stanislaw Grzybowski2, Jian Li1 1Chongqing University, China; 2Mississippi State University, United States

DC Ice-Melting Model for Elliptic Glaze Iced Conductor ...........................................................657 Xingliang Jiang, Songhai Fan Chongqing University, China

A LMF Based Broken Strand Faults Detection Scheme for Steel Core in ACSR....................661 Xingliang Jiang, Yunfeng Xia Chongqing University, China

A Multi-Parameter Evaluation Method of Large Generator Fault Probability..........................665 Yingchun He2, Youyuan Wang2, Weigen Chen2, Lin Du2, Mingying Chen2, Yali Liu1 1Chongqing Electrical Power Logistics Company, China; 2Chongqing University, China

Maintaining Regional Reliability During Expansion of the Maury 500-kV GIS Facility............................................................................................................................................669 Randal Petty Tennessee Valley Authority, United States

A GA Based Optimized Designation of Detection Sensor for Broken Steel Stranded Wire Faults in ACSR .....................................................................................................................672 Xingliang Jiang, Yunfeng Xia Chongqing University, China

B-10 Online Condition Monitoring - 2 Date: Thursday, October 14, 2010 Time: 10:15 - 12:00 Room: Rhythms II Chairman: Lukas Graber; Florida State University, USA

SF6 Gas Monitoring and Leakage Detection in Gas Insulated Switchgear..............................676 Paul Barnett, Jeffrey Nelson Tennessee Valley Authority, United States

Development of Git Partial Discharge UHF Online Monitoring System...................................680 Yanbin Xie, Ju Tang, Xiaoxing Zhang Chongqing University, China

Ice Monitoring System of Transmission Lines Based on Fiber Bragg Grating Sensor............................................................................................................................................684 Guo-Ming Ma, Cheng-Rong Li, Jian Jiang, Jiang-Tao Quan, Yang-Chun Cheng North China Electric Power University, China

The Syntactical Pattern Recognition for the Leakage Current of Transmission Line Insulators.......................................................................................................................................688 Yan Mi2, Feng Mao2, Chenguo Yao2, Chengxiang Li2, Honggang Kuang1, Maochun Zhang1 1Chongqing Electric Power Corperation, China; 2Chongqing University, China

Ultra-Sound and Artificial Intelligence Applied to the Diagnostic of Insulations in the Field .........................................................................................................................................692 Tarso Vilela Ferreira, André Dantas Germano, Edson Guedes Da Costa Universidade Federal de Campina Grande, Brazil