Conference Agenda

Breakdown and Partial Discharge Characteristics of Lubricating Oil as a Coolant in Direct Oil-Cooled Motor for Electric Propulsion Aircraft

T. Umemoto¹, Y. Tsuboi², Y. Tanaka², M. Sato¹, A. Kumada¹

1: The University of Tokyo, Japan; 2: Japan Aerospace Exploration Agency

Electric and Thermal Stress Analysis of a HV-Insulation System acc. IEC 60034-18-42 for a Hydro Generator with Different Inverter Technologies

C. Staubach¹, T. Hildinger²

1: University of Applied Sciene Hannover, Germany; 2: Voith Hydro, Brazil

Comprehensive Methodology for Upgrading Conventionally Cooled Hydro Generators: From Classical Analysis to Finite Element Optimization

A. Nikolaev, A. Khazanov, A. Gegenava

National Electric Coil, United States of America

Invisible Damage: Mechanical Impact Damage to Epoxy Mica Insulation and the Challenges of “In Situ” Groundwall Insulation Repairs

A. Perazone, A. Zlomek, P. Finigan, S. Sitler

GE Vernova, United States of America

Electrical Characterization of Stress Grading Coating in High Voltage Stator Bars and Coils

S. Bartaa¹, H. Provencher², É. David¹, C. Millet¹, S. Bernier², D. Rozon²

1: ETS, Montréal, Canada; 2: Institut de recherche IREQ, Hydro-Québec, Varennes, Canada

On-line Insulation Assessment of Hydrogenerator Stator Windings Using Partial Discharge Magnitude and Its Temperature Dependence

S. Nakamura, T. Kuraishi, M. Kanegami, S. Miyazaki

Central Research Institute of Electric Power Industry, Japan

Fault Detection of Vacuum Type Circuit Breaker and Solid Insulated Current Transformers in 36 kV Metal-Enclosured Air-Insulated Switchgears in PD Scans with TEV Sensor - Case Studies

M. Yanan, T. Güneş, H. Türkmen, N. Kul, A. Kundakçı

Turkish Electricity Transmission Corporation - TEİAŞ, Turkiye

Partial Discharge Detection for Enhanced Condition Monitoring of MV Metal-clad Switchgears

G. M. HASHMI, A. PATEL, K. BALHARETH, A. AHMED

SAUDI ARAMCO, Saudi Arabia

Direct Event-to-Flow Estimation for Mechanical Fault Detection in Distribution Switchgear

H. Wang¹, M. Hou², Q. Lyu², H. Mei¹, X. WANG¹

1: Tsinghua University, China, People's Republic of; 2: Shenzhen Power Supply Corporation, China Southern Power Grid Corporation

Fibre Optic Probe for Fast Condition Assessment of 400 kV Cap and Pin Insulators

V. Ramnarine, R. Afia, V. Peesapati, S. Djurovic

The University of Manchester, United Kingdom

Approaches for Investigating Supercritical Carbon Dioxide Fluid-Arc Interactions at high pressures for a novel circuit breaker

Z. F. G. Wong, A. Pigeon, Z. Jin, S. Neall, L. Graber, J. Rauleder

Georgia Institute of Technology, United States of America

Intelligent Fault Diagnosis Techniques for High Voltage Circuit Breakers: A Comprehensive Review

A. Salwekar, A. Jadhav, R. Langar, V. Bhosale, S. Chandra

COEP TECHNOLOGICAL UNIVERSITY PUNE, INDIA

The Importance and Complementarity of Oil Dissolved Gas Analysis in Fault Investigation Studies and Condition Assesments of Power Transformers and Reactors

M. Yanan, T. Güneş, D. Aktaş Taşkıran

Turkish Electricity Transmission Corporation - TEİAŞ, Turkiye

Dielectric Frequency Response (DFR) analysis to assess condition of HVDC converter transformers

E. Ermakov¹, D. Robalino²

1: Hitachi Energy, Sweden; 2: Megger, USA

First breakdown underperformance of gas insulation systems

H.-C. Toepper, R. Wörlen, F. Bill, C. M. Franck

Institute for Power Systems and High Voltage Technology, ETH Zurich, Switzerland

Selective Gas Priority in Dissolved Gas Analysis for Power Transformers: Reducing False Alarms While Preserving Sensitivity

G. Marius

Consulting Marius Grisaru, Israel

DGA Interpretation on Ester-Filled Transformers

A. Sbravati¹, L. Cheim¹, L. Lewand², A. Alber¹, Z. H. Draper³, J. J. Dukarm³, K. Wirtz⁴, T. Melin⁵

1: Hitachi Energy, United States of America; 2: Doble, United States of America; 3: Delta-X Research; 4: Cargill Inc.; 5: Vaisala

Interpreting measurements of moisture in oil for transformers

A. Sbravati¹, A. Al-Abadi², H. Garg², A. Mudryk³

1: Hitachi Energy, United States of America; 2: Hitachi Energy, Germany; 3: Camlin Energy

Development and Testing of a PD Measurement System for Inverter Operation

C. Staubach, M. Felgner

University of Applied Sciene Hannover, Germany

Advanced Diagnostic Technique to Detect Abnormal Sound Source in MV Metal-clad Switchgears

G. HASHMI, A. PATEL, S. MOHAMMAD, A. HUSSAIN

SAUDI ARAMCO, Saudi Arabia

Classification of Sporadic Partial Discharge Pulses Based on Beq-Deq Analysis Method

Y. ZHANG, Z. WANG, H. CAO, H. SONG

School of Electrical Engineering Shanghai Jiao Tong University, China, People's Republic of

Research on the Evolution Mechanism of Surface Flashover Performance in SF6 under Long-Term AC Voltage

Z. Wang, Y. Zhang, H. Cao, H. Song

Shanghai Jiao Tong University, China, People's Republic of

Analysis of Current Imbalance in MOSA Banks Under DC Short Circuit Current Tests

J. C. Lee, I. Kwon, Y. Kwak, B. Lee

Dept, of Electronic Engineering, HVDC Electric Power Lab

Development of Mica Insulation Tape with Nano Filler for Global VPI Stator Windings

S. Kodama, T. Iwanaga, T. Sakurai, M. Takeno, T. Okamoto

TMEIC Corporation, Japan

Numerical and Experimental Investigation of Winding Temperature of 72.5 kV Dry-type Transformer

C. Jin, C. Wang, Q. Sun

Hitachi Energy (China) Ltd., China, People's Republic of

Properties of Nb-doped BCZT ceramics for nonlinear transmission line applications: synthesis and characterization

B. D. Ladim de Souza¹, E. Antonelli¹, L. P. Silva Neto¹, R. Graudiston Aredes¹, J. O. Rossi², E. Schamiloglu³, M. Moura¹, M. Abedi³

1: Unifesp, Brazil; 2: INPE, Brazil; 3: UNM, USA

Influence of Partial Discharge Location on Stator Winding PD Current Waveforms and Propagation Characteristics: Measurement and Simulation

S. Kato¹, T. Kajiyama¹, Y. Nagatani¹, T. Kuno¹, M. Hikita¹, M. Kozako¹, T. Iwanaga², K. Zaizen², S. Kodama², T. Okamoto²

1: Kyushu Institute of Technology, Japan; 2: TMEIC Corporation, Japan

Influence of TiO2 on Dielectric Cellulose for High-Efficiency Power Transformers

A. L. Spiandorello¹, R. G. Aredes¹, F. G. Giupponi², C. Jacomini², E. Antonelli¹, L. P. Silva Neto¹, J. O. Rossi³, I. Z. Rodrigues¹

1: Unifesp, Brazil; 2: FEMA Indústria de Materiais Isolantes Ltda, Brazil; 3: INPE, Brazil

Conduction-Charged Parylene HT Electrets for Partial Discharge Suppression in Power Modules

A. M. Juberi¹, M. N. Washir¹, H. A. Mantooth², C. Park¹

1: Arizona State University, Tempe, AZ, United States of America; 2: University of Arkansas, Fayetteville, AR, United States of America

Resin Penetration and Moisture Absorption Behaviors of Cellulose Nano-Fiber Boards for Rotating Machine Electrical Insulation

T. Iwanaga¹, T. Okamoto¹, Y. Miyaji², K. Kimura³, H. Kojima³, N. Hayakawa³, N. Furuta⁴, H. Okumura⁴

1: TMEIC Corporation, Japan; 2: Mitsubishi Electric Corporation, Japan; 3: Nagoya University, Japan; 4: RISHO KOGYO CO., LTD., Japan

Experimental and Numerical Investigation of Surface Charge Accumulation Behavior under DC Pre-Stress in SF₆ Gas-Electrode Configuration

Y. Bae¹, R. Hwang¹, I. Kwon¹, G. Go¹, B. Lee¹, H. Hwang², C. Heo², D. Jeong²

1: hanyang university, Korea, Republic of (South Korea); 2: Power & Industrial Systems R&D Center, HYOSUNG Corporation, Korea, Republic of (South Korea)

Investigation on Internal Conductor Spacings in Printed Circuit Boards for Power Converters

L. Griffiths, I. Cotton

The University of Manchester, United Kingdom

Experience in Partial Discharge Detection for Rotating Machines Using Charge Integration Mode (CIM), Three-Phase Signal Discrimination (TPSD), and Peak Phase Dispersion Analysis (PPDA)

Y. J. Kim, J. Lee

O&M Korea, Korea, Republic of (South Korea)

POWERGRID’s Experience with Transformer Insulation Failures: Root Cause Analysis and Preventive Measures

N. Srivastava, G. Agrawal, D. D. Paul

POWERGRID, India

Partial Discharge Development Characteristics of Void Defect inside a 500 kV GIL Tri-post Insulator Under Long-term Electric Stress

F. Chen¹, W. Li¹, X. Li², M. Li¹, D. Ding², J. Zhang²

1: Ningnan Baihetan Hydropower Plant, Three Gorges Jinsha River Yunchuan Hydropower Development Co., Ltd.ublic of; 2: Sichuan Energy Internet Research Institute, Tsinghua University, China, People's Re

Investigation of Bulk Self-Healing behaviour in Natural Rubber/Polycaprolactone and Polyethylene Oxide Blends

L. Della Giovanna¹, F. Guastavino¹, M. H. Raza¹, E. Torello¹, M. Hernández², M. Hernández-Rivas², I. Mas-Giner², P. Tiemblo Magro²

1: University of Genova, Italy; 2: Instituto de Ciencia y Tecnología de Polímeros (CSIC), Spain

Surface Partial Discharge: Self-Healing Properties of Natural Rubber/Thermoplastic blend Under Electrical Stress

L. Della Giovanna¹, F. Guastavino¹, E. Torello¹, M. H. Raza¹, M. Hernandez², M. Hernández-Rivas², I. Mas-Giner², P. Tiemblo Magro²

1: University of Genova, Italy; 2: Instituto de Ciencia y Tecnología de Polímeros (CSIC), Spain

Improved Classification of Partial Discharge in Rotating Machines via Feature Extraction, Selection and Integrated Random Forest

A. Hechifa^1,2, C. Priananda^3,4, H. Illias³, A. Lakehal⁵, A. Rashed⁶, D.-E. Mansour^7,8

1: UDERZA Unit, Faculty of Technology, University of El Oued, Algeria; 2: LGMM Laboratory, Faculty of Technology, University of 20 August 1955-Skikda, Skikda, Algeria; 3: Department of Electrical Engineering, Universiti Malaya, Kuala Lumpur 50603, Malaysia; 4: Department of Electrical Automation Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia; 5: Laboratory of Research on Electromechanical and Dependability, University of Souk Ahras, Algeria; 6: Université de Pau et des Pays de l’Adour, E2S UPPA, Pau, France; 7: Department of Electrical Power and Machines Engineering, Faculty of Engineering, Tanta University, Tanta 31511, Egypt; 8: Department of Electrical Power Engineering, Faculty of Engineering, Egypt-Japan University of Science and Technology (E-JUST), Alexandria 21934, Egypt

Thermal class evaluation of coating materials via standardized test methods

C. Klein¹, S. Pearsall¹, M. Wantuch¹, N. Frost²

1: Astro Chemical Company, Inc., United States of America; 2: Frosty's Zap Lab, LLC, United States of America

Defect Detection in Power Transformers Using Multiconductor Transmission Line-Based Model of Winding

A. A. Kaabi Nejadian^1,2, H. Moradi Tavasani^1,3, W. Ziomek^2,1, B. Kordi¹

1: University of Manitoba, Canada; 2: PTI Transformers LP, Canada; 3: Electric Power Engineers, USA

Three-dimensional approach to the transfer function in transformer windings and its application to the Interpretation of SFRA results

A. A. Morán-Acevedo¹, R. Ocon-Valdez², F. P Espino-Cortes¹

1: ESIME Instituto Politecnico Nacional, Mexico; 2: Facultad de Estudios Superiores Aragón, Universidad Nacional Autónoma de México

Calculation of the Leakage Impedance of a Reconnectable Three-Phase Mobile Power Transformer Using the Finite Element Method

L. A. Rico-García¹, R. Ocon-Valdez², F. P Espino Cortes¹

1: ESIME Instituto Politecnico Nacional, Mexico; 2: Facultad de Estudios Superiores Aragón, Universidad Nacional Autónoma de México

Effect of Molecular Weight on Partial Discharge-Induced Degradation of Alkoxysilane-Terminated PDMS Films

N. Yamakami¹, Y. Aoki¹, S. Kikuta², T. Okamoto²

1: Mie University; 2: TMEIC

Investigating the Effect of Digestive Liquid on the Microstructure and Current Nonlinearity of Cold Sintered ZnO

K. Chuong¹, Y. Liu², E. Jones³, E. Amevo², I. Graham¹, L. Graber², L. Garten¹

1: School of Material Science and Engineering Georgia Institute of Technology Atlanta, U.S; 2: School of Electrical and Computer Engineering Georgia Institute of Technology Atlanta, U.S.; 3: School of Mechanical Engineering Georgia Institute of Technology Atlanta, U.S.

Experimental Validation of a High-Frequency Equivalent Circuit Model for Partial Discharge Localization Using an Unmolded Voltage Transformer

H. Sasano¹, S. Toyoda¹, R. Kimoto¹, M. Hikita¹, M. Kozako¹, Y. Aoki², D. Ito³, K. Oyama³, T. Nakamae³, T. Maeda³, T. Ozaki³

1: Kyusyu Institute of Technology, Japan; 2: Mie University; 3: Toshiba Industrial Products and Systems Co, Ltd.

Integrated Diagnostic Assessment of Insulation Degradation in Medium-Voltage Switchgear and Cable Systems

m. bhardwaj

NA, United States of America

Elaboration of suitable sensors to PDs within different motor insulation configurations at ultra short rise times

T. Hammarström, y. Serdyuk

Chalmers University of Technology, Sweden

Impact of Cellulose Thickness on Moisture Migration and Dielectric Response in Different Types of Insulating Liquids

A. Al-Abadi, H. Garg, I. Woyna

HITACHI ENERGY Germany

Adaptive transformer rating: A framework for managing dynamic grid challenges in India

S. S. HARICHANDAN RAY, D. PAUL, N. SRIVASTAVA, R. SRIVASTAVA, G. AGRAWAL, D. N. JHA

POWERGRID CORPORATION OF INDIA LIMITED, India

Optimization of the Cooling System in OD-Type Oil-Immersed Power Transformers

L. M. Espino-Rojas¹, R. Ocon-Valdez², F. P. Espino-Cortes¹, F. de Leon³, R. Linares-y-Miranda¹, F. A. Jandan³

1: ESIME Instituto Politecnico Nacional, Mexico; 2: Facultad de Estudios Superiores Aragón, Universidad Nacional Autónoma de México; 3: Tandon School of Engineering, New York University

Myth Busting: Natural Ester Liquid Facts and Fiction

B. Forsyth

Cargill, Inc.

Fire Hazard Evaluation of Mineral Transformer Oil for High Voltage Applications

G. Nadakuditi¹, S. S. Rao², N. Aravindan¹

1: National Fire Service College, Nagpur, India; 2: National Institute of Technology, Warangal, India

Stage-Wise Particle Migration and Pre-Bridge Formation in Contaminated Transformer Oil Under DC Electric Stress

S. Mahmud¹, F. P. Mohamed¹, M. Kutlu¹, M. S. Islam¹, G. Chen²

1: Military Technological College, Oman; 2: University of Southampton, UK

Partial Discharge Characteristics under High Frequency High Voltage Stress and their Impact on Solid Insulating Materials

M. Kempf, M. Koch

Technical University of Darmstadt, Germany

Laser-Induced Breakdown Spectroscopy and Dynamic Vision Sensor Fusion Network for Quantification of High-Voltage Insulator Contamination

H. Wang¹, W. Liu², T. Deng², X. Ruan², J. Li¹, H. Jian¹, X. Wang¹

1: Engineering Laboratory of Power Equipment Reliability in Complicated Coastal Environments, Tsinghua University, Shenzhen, Guangdong, China; 2: Dongguan Power Supply Bureau, Guangdong Power Grid, Dongguan, Guangdong

Application of SSVTs for high-frequency transient insulation tests

I. Ziger¹, M. Nenadic¹, A. Grđan¹, B. Jurišić², M. Perkovic², V. Jerbić²

1: Končar - Instrument Trasnformers, Croatia; 2: Končar - Electrical Engineering Institute, Croatia

Proposed Updates to IEC 61033, Test methods for the determination of bond strength of impregnating agents to an enamelled wire substrate

M. Winkeler

ELANTAS North America, Inc., United States of America

Electromechanical Aspects of Pulsed Breakdown of Solid Dielectrics in Strongly Divergent Fields

A. Pokryvailo

Spellman High Voltage Electronics Corp., United States of America

Critical analysis of the IEC Standards in terms of requirements for testing the electric strength of solid insulating components of transformers

P. Rozga

Lodz University of Technology, Poland

A Non-Invasive Approach for Stator End-Winding Insulation Repair

M. Chuma Cerbantes¹, R. Oliveira Ramos¹, M. Bacelar Matos¹, L. Fernando Vitti¹, G. Forni¹, A. Luiz Pimentel Proença¹, A. Zanchetta Garcia², S. Oliveira Mileo²

1: China Three Gorges (CTG) Brasil, Brazil; 2: Advanced Engineered Products International (AEPI) do Brasil

Understanding the use of PD measurements in High Voltage Hydro-Generators

T. HILDINGER¹, T. Lamas², J. Cordeiro², F. Pereira²

1: Voith Hydro Ltda, Brazil; 2: Voith Hydro Holding, Germany

Electrical Field Mitigation for Inner Gas-Cooled Generator Stator Windings

A. Khazanov, A. Gegenava, A. Nikolaev

National Electric Coil, United States of America

Insulation Electric Stress Distribution in High-Voltage Motors Driven by Wide-Bandgap Semiconductor Inverters

Z. Li¹, J. Li¹, J. Wang², P. Wang², C. Cao², Y. Zhu²

1: Dongfeng Motor Corporation Technical Center，China; 2: Sichuan University, China

A “Mission Impossible” repair of a severe damaged hydro generator

T. Klamt¹, J. M. Ousdal²

1: GE Vernova, Switzerland; 2: Sira-Kvina kraftselskap

Characterization of a newly developed methacrylate epoxy-based high voltage resin for rotating electrical machines

D. Masseroni¹, C. Herold², M. Zhou³

1: ELANTAS North America LLC; 2: ELANTAS Europe AG; 3: ELANTAS Zhuhai Co. Ltd