Solar Inverter Duty Transformer performance optimization using alternate dielectrics under varying ambient conditions

Parag Chatterjee, Subir Karmakar

NTPC Limited, India

New conservator design for floating offshore transformers in extreme weather

RUPESH DARIPA¹, Oguzkan SENTURK², Vivekkumar CHAUBEY³, Tobias STIRL⁴, Jian ZHANG⁵, Rajeev GUPTA⁶, Tirdad BOROOMAND⁷

1: GE Vernova, India; 2: GE Vernova, Turkey; 3: GE Vernova, India; 4: GE Vernova, Germany; 5: GE Vernova, China; 6: GE Vernova, United Kingdom; 7: GE Vernova, United Kingdom

Transformers and Reactors for Floating-Offshore- Substations. Technical Requirements, Solutions, Experiences and Outlook

Ewald Werner Taschler¹, Joerg Findeisen², Martin Stoessl¹

1: Siemens-Energy, Austria; 2: Siemens-Energy, Germany

Impacts of Reverse Power Flow through Substation Transformers due to high penetration of DERs

Milad Akbari¹, John Penaranda¹, Mohsen Mostafaei², Afshin Rezaei-Zare²

1: Hydro One, Canada; 2: York University, Canada

Enhancing Wind Farm reliability through regular Transformer testing and monitoring solutions

Ahmed El-Rasheed¹, Volney Naranjo²

1: Megger, Canada; 2: Megger, USA

Consolidating Transformer Online Monitoring and Maintenance Data for Condition Assessment and Prescriptive Maintenance of Power Transformers

Nathan Jacob¹, Marco Tozzi², Anatoliy Mudryk²

1: Camlin Energy, United States of America; 2: Camlin Energy, Northern Ireland

Climate Change Impact for Power Transformers

Edward Gerald teNyenhuis

Hitachi Energy, Canada

A2_PS2_USA_Rossini_ Installation of transformer monitoring solutions and its impacts on data collection and analysis

Yuri Monteiro Rossini¹, Francis Felipe Mantoan¹, Leandro Crispim Favoretto²

1: Siemens Energy, United States of America; 2: Siemens Energy, Brazil

Strategic Approaches to Determine the Lifetime of Power Transformers

Ryota Kuriyama, Tadao Minagawa, Yoichi Nakashima, Kenichi Mino, Yoshinobu Kitagawa, Tsuyoshi Amimoto, Noritaka Takehira, Takumi Fujino

Mitsubishi Electric Corporation, Japan

Power Transformers as Potential Bottleneck for Grid Expansions

Thomas Friedrich Kessler

Siemens Energy, Germany

Strategies for Fast Replacement of Transformers and Reactor Units

Luis Chavez¹, Ricardo Quijada²

1: Independent Consultant; 2: AtkinsRéalis, Canada

Dynamic Condition Assessment of Substation Equipment Leveraging an Asset Performance Management System

Robert Otal, Alex Ferguson, Charles Austria, Shanon Lo, Travis Squires

BBA, Canada

Strategy for Extending Power Transformer Service Life

Stéphane Proulx, Patrick Picher, Claude Rajotte

Hydro-Québec, Canada

Machine Learning Applied to Anomaly Diagnosis in Transformers and Reactors Using Gas Chromatography

Rafael Ferreira¹, Thiago Sanchez¹, Tatiana Escovedo², Marcos Kalinowski²

1: Eletrobras CGT Eletrosul, Brazil; 2: PUC-RJ, Brazil

Advances in Data-Driven Models for Digital Twins of Power Transformers

Sruti Chakraborty¹, Mauricio Soto², Alexander Alber³, Brian Sparling⁴, Patrick Picher⁵, Federica Bragone⁶

1: OMICRON Electronics, Austria; 2: Hitachi Energy, United-States; 3: Hitachi Energy, Germany; 4: Kinectrics, Canada; 5: Hydro Quebec, Canada; 6: KTH University, Sweden

Application of Machine Learning on Prediction of Power Transformer No-Load Losses

Bruno Bosnjak, Walter Lee

GE Vernova

Approach, experiences and lessons learned in a fault developing HV transformer:Case Study perspective

Parag Chatterjee, Sushil Kumar

NTPC Limited, India

Application of Machine Learning Interpretability and Explainability Metrics in FRA of Transformers

Gabriel Lopes

Siemens Energy, Germany

Digital Transformation (DX) in Power Transformer Manufacturing: Enhancing Efficiency and Precision

Shigeyoshi Yoshida, Daisuke Ueno, Atsushi Yamatake, Yoshinobu Kitagawa, Kenichi Mino, Mitsugu Ueda, Tadao Minagawa, Hirotaka Muto

Mitsubishi Electric Corp, Japan

A Novel Hybrid Multilayer Model for Diagnosing Faults in Power Transformers Through Dissolved Gas Analysis (DGA)

Mouloud Bouzar¹, issouf Fofana¹, Patrick Picher²

1: Canada Research Chair Tier 1 in the Aging of Oil-Filled Equipment on High Voltage Lines (ViAHT), Université du Québec à Chicoutimi (UQAC), Chicoutimi, QC G7H 2B1, Canada; 2: Hydro-Québec's Research Institute

Advancing Power Transformer Monitoring: Machine Learning-Based Temperature Monitoring

Hoda Jalali, Avinash Jain

VIE Technologies, United States of America

Improvement and Strengthening Method for Local Structure of UHV Converter Oil Tank for Defense Against High-Energy Arc Faults

Yikun Zhao, Zongliang Zhang, Peng Li, Ke Wang, Shuqi Zhang

China Electric Power Research Institute China, China, People's Republic of

Experimental Study on Explosion-Proof Strategy for On-Load Tap Changer

Jiaxi Li^1,2, Ke Wang^1,2, Hongwei Zhang³, Yikun Zhao^1,2

1: China Electric Power Research Institute, China, People's Republic of; 2: National Engineering Research Center of UHV Technology, Haidian District, Beijing 100192, China; 3: China University of Mining & Technology, Beijing

Mitigation of Fire due to High Energy Internal Arc in Bushing Turrets: Additional New Test Results

Mohamed Ryadi¹, Ewald Werner Taschler², Jean-Baptiste Meillier¹, Luc Pauliac¹, Martin Stoessl², Hannes Bachkoenig²

1: EDF; 2: Siemens-Energy, Austria

Research on Pressure Characteristics of HVDC Transfomer Turret on Arc Fault

Licheng Lu, Hongchuan Dong, Juzhen Wu, Yuhang Li

State Grid Economic and Technological Research Institute Co., Ltd., China, People's Republic of

Arc Fault Detection in Transformers Using Optical Cable Sensors to Reduce the Risk of Explosion

Aref Sharifi¹, Moritz Kuhnke¹, Peter Werle¹, Asghar Akbari²

1: Schering-Institute for High Voltage Engineering and Asset Management Leibniz University of Hannover, Germany; 2: Electrical Engineering Department K.N. Toosi University of Technology, Iran

The Role of Nitrogen Additives and Meta-Aramid Fibres in Water Migration for Optimized Transformer Operation

Oscar H. Arroyo-Fernandez, Patrick Picher, Mariela Rodriguez, Brigitte Morin

Hydro-Québec, Canada

Determination of Low Molecular Weight Acids in Power Transformer Mineral Oil

Esperanza Mariela Rodriguez Celis, Brigitte Morin, Oscar Henry Arroyo Fernandez, Patrick Picher

Hydro-Quebec, Canada

Explore The Use Of Synthetic Ester In Transformers Beyond Fire and Environmental Safety Benefits

Jinesh Malde¹, Jonathan Brenton², Brett Belbin², Anthony Alan Coker¹

1: Shell; 2: Newfoundland Power

Carbon Footprint Analysis of Various Insulating Fluids used in Power Transformers

Christophe ELLEAU, Lea QUILLARD, Lamine COULIBALY

EDF Electricité de France, France

Study on Thermal Expansion Characteristics and Limit Values of Dry-type Bushings for 750 kV Transformers under Extreme Environments

Gaoyi Shang¹, Wanhao Shi¹, Dingqian Yang², Xuandong Liu¹

1: Xi'an Jiaotong University, China; 2: State Grid Xinjiang Electric Power Research Institute, China

On Load Tapchangers for low temperature and harsh environmental applications

Onkar C Kolambkar, Pranav Shanker, X Leo Sushil

CTR Manufacturing Industries Private Limited, India

Standard Approach Towards Power Transformers’ Sustainability through a Joint Industrial Project

MOHAMMAD REZA SHAH MOHAMMADI¹, Christina IOSIFIDOU², Yiri Massop¹

1: dnv; 2: Siemens Energy

Mitigation and Electromagnetic Transient (EMT) Analysis for Dissolved Gas in a 500 kV/16 kV Generator Step-Up (GSU) Transformer

Bruce Chen, Hyunjung Yong, Wenli Hong, Masoud Ali, Ska-Hiish Manuel, Anil Pradhan, Edward Burt

BC Hydro, Canada

Insights in Condition Assessment of Power Transformers Using SOT and DGA Data for End-of-Life Estimation

Ahmad Vosoughi Hamzekhanlo¹, Stefan Kornhuber¹, Sebastian Kleyboldt², Mahmoud Moh'd²

1: University of Applied Science Zittau/Görlitz , Germany; 2: 50Hertz Transmission GmbH

Determining Abnormal Behaviour of Loaded Tap Changers using a DGA 4-simplex.

Zachary Draper, James Dukarm, Sanskruti Padmawar

Delta-X Research, Canada

Software for applying the DGA interpretation method of CIGRE TB 771 using gas limits specific for each type of fault

Michel Duval¹, Nelly Sénéchal¹, Luc Paulhiac², Jerzy Buchacz³, Patrick Picher¹, Sébastien Favron¹, Marta Cea de Ruano¹, Stéphane Proulx¹

1: Hydro Québec, Canada; 2: EDF, France; 3: Electropomiar Elektryka, Poland

Evaluation of Water Content in Solid Insulation Using Online Monitor Data

Senja Maria Leivo

Vaisala Oyj, Finland

Partial Discharge Based Root Cause Analysis for a 33 kV Cast Resin Transformer

Raul Alvarez¹, Rodolfo García-Colon², Mihai Huzmezan³

1: University of La Plata, Argentine Republic; 2: Megger; 3: Megger

Impact of Accelerated Thermal Aging on Power Transformer Insulation: An FRA-Based Assessment

Avinash Srikanta Murthy¹, Genaro Andrew-Morlet², Zhanyue Wen², Saravanan Selvaraj¹

1: Hitachi Energy India Limited, India; 2: Hitachi Energy Germany AG, Germany

Analysis of on-line vibroacoustic monitoring of On-Load Tap Changers in Power Transformers

Joachim Schiessling¹, Nilanga Abeywickrama¹, Michel Gauvin², Patrick Picher²

1: Hitachi Energy Research, Sweden; 2: Hydro-Québec, Canada

Comparative Study of Temperature Rise Test Using Cooling Curve Analysis for Liquid-Filled Transformers

Ali Al-Abadi¹, Wei Wu²

1: HITACHI Energy, Germany; 2: HITACHI Energy, USA

Methodology to Increase Capacity of Power Transformers based on the Temperature-Rise Test Results Margins

Juan Gonzalo Castellanos, Enrique Betancourt

Prolec GE, Mexico

Simplification of Radiator Modelling for Transformer Complete-Cooling-Loop CFD Simulation

Zhengbo Xu¹, Sicheng Zhao¹, Qiang Liu¹, Zhongdong Wang¹, Massimo Negro², Luc Dorpmanns³

1: The University of Manchester, United Kingdom; 2: Weidmann Electrical Technology AG, Switzerland; 3: SGB-SMIT Group, Netherlands

Enhancing Top-Oil Temperature Predictions Using LSTM Neural Networks and the IEC 60076-7 Thermal Model

João Pedro da Costa Souza¹, Patrick Picher², Issouf Fofana¹, Arnaud Zinflou²

1: Université du Québec à Chicoutimi, Canada; 2: Hydro-Québec

Physics-based thermal model of Shunt Reactors

Alan Sbravati¹, Ernesto Ceron², Javier Gutierrez³

1: Hitachi Energy, United States of America; 2: Hitachi Energy, Sweden; 3: Hitachi Energy, Spain

Research on the Impact of Non-Uniform Temperature Distribution Inside Large Power Transformers on Insulation Margin

Shuqi Zhang¹, Tao Zhu¹, Xiaolin Zhao¹, Li Ma², Yuwei Zhong¹, Zuoxian Wang¹, Huiwen He¹

1: China Electric Power Research Institute, China, People's Republic of; 2: Zhejiang Huayun Information Technology Co., LTD

Analytical Derivations and Physics-based Modelling of a Deformed Winding and its FRA features

Zhongdong Wang¹, Ziyuan Li¹, Zhaozheng Wang¹, Bozhi Cheng², Dahlina Sofian³

1: The University of Manchester, United Kingdom; 2: SSE Renewables, United Kingdom; 3: Scottish Power Renewables, United Kingdom