Smart Bushing Surveillance for a Safer Power Grid

Iva Radecic¹, Bruno Jurisic¹, Ivana Ivanovic¹, Vedran Jerbic¹, Marijan Perkovic¹, Dalibor Filipovic-Grcic¹, Marin Schönberger²

¹KONCAR - Electrical Engineering Institute Ltd, Croatia; ²HOPS Plc, Croatia

Real-Time Monitoring of Station Service Voltage Transformer (SSVT)

Iva Radecic¹, Vedran Jerbic¹, Ivana Ivanovic¹, Bruno Jurisic¹, Marijana Nenadic², Igor Ziger²

¹KONCAR - Electrical Engineering Institute Ltd, Croatia; ²KONCAR - Instrument Transformers Inc, Croatia

Challenges in Temperature Rise Testing of Station Service Voltage Transformers with Medium-Voltage Secondary Windings

Josip Ivankic, Igor Ziger, Danijel Brezak

KONCAR - Instrument Transformers, Croatia

Identification of Electrical Faults in a Transformer Winding using Unsupervised Dimensionality Reduction and Classification Algorithms

Mohammed Bilal Ghorbal¹, Hassan Reza Mirzaei¹, Ebrahim Rahimpour²

¹University of Zanjan, Electrical Engineering Department, Zanjan, Iran; ²Technical University of Applied Sciences Würzburg-Schweinfurt, Germany

Non-standard, high frequency power system transients

Ebrahim Rahimpour¹, Alvaro Portillo², Bruno Jurisic³

¹Technical University of Applied Sciences Würzburg-Schweinfurt, Faculty of Electrical Engineering, Germany; ²Transformer Consultant, Uruguay; ³Končar Electrical Engineering Institute, Croatia

Dynamic Thermal Rating of Power Transformers – Concepts, Standards, and Applications

Ildar Daminov¹, Tim Gradnik², Tor Laneryd³

¹Nantes University IMT Atlantique, Nantes, Pays de la Loire, France; ²Elektroinštitut Milan Vidmar, Slovenia; ³Hitachi Energy Research, Västerås, Sweden

Artificial Intelligence and Classical Methods in DGA Interpretation - Use Case on a Real Transformer Defect

Alexander Pirker¹, Fredi Belavić²

¹VUM - Verfahren Umwelt Management GmbH, Austria; ²Austrian Power Grid AG, Austria

Cold Start Approval of Natural Ester Liquid Filled Power Transformer

AHMED GAMIL, Ali Al-Abadi

Hitachi Energy Germany AG, Germany

BREAKDOWN VOLTAGE TESTING AS A MULTI-PARAMETER DIAGNOSTIC PLATFORM FOR TRANSFORMER RISK ASSESSMENT

Marius Grisaru¹, Vitaly Gurin²

¹Marius Grisaru Oil & Transformer Solutions, Israel; ²Senior transformer expert, Ukraine

Additives and Oxidation in Ester-Based Insulating Liquids – Requirements and Analysis

Griffin Burk¹, Edward Casserly¹, Bruce Pahlavanpour²

¹Ergon Inc. - Jackson Mississippi, 39215 United States of America; ²Ergon International Inc. – Waterloo, Belgium B-1410

Moisture Associated Dielectric Characteristics of Synthetic Ester-Filled Transformers Under Variable Load Conditions

Hemanshul Garg¹, Ali Al-Abadi¹, Irene Woyna¹, Digpalsinh Parmar²

¹HITACHI Energy, Germany; ²HITACHI Energy, India

Direct Temperature Measurement Techniques for Heat Run Test of Dry-Type Transformers

Chunping Wang¹, Cheng Jin¹, Ali Al-Abadi²

¹HITACHI Energy, China; ²HITACHI Energy, Germany

Extracting Key Thermal Parameters Beyond Top Liquid and Average Winding Temperature Rise from Standard Heat Run Test

Ali Al Abadi¹, Wei Wu²

¹HITACHI Energy, Germany; ²HITACHI Energy, USA

Resilience through Repair: Enhancing Grid Reliability via On-Site Restoration of EHV Transformers and Reactors

SUMIT SUMAN HARICHANDAN RAY, GUNJAN AGRAWAL, RAJIL SRIVASTAVA, NAVEEN SRIVASTAVA

POWERGRID CORPORATION OF INDIA LIMITED, India

Influence of background noise on noise measurement accuracy of reactor energized by test transformer

Janko Novosel, Matej Dorešić, Igor Telalović, Davor Švarc, Hrvoje Kordić

Končar Energetski Transformatori Ltd., Croatia

Analysis of temperature measurement systems of a power transformer in the transmission grid

Manuel Hillberger¹, Fredi Belavić¹, Gerald Steinmaurer²

¹Austrian Power Grid, Austria; ²University of Applied Sciences (FH OOE), Austria

Online centralized supervision of distributing transformers

Wiesław Gil¹, Marek Andrzejewski¹, Mariusz Groński²

¹Mikronika, Poland; ²ENEA Operator Poland

Experience with Remote Service Solutions for Transformer Asset Management

Robert Niedermeier¹, Simon Ostroznik², Michael Lohr¹

¹Maschinenfabrik Reinhausen, Germany; ²Kolektor ETRA, Slovenia

Monitoring Principles of OLTCs in Power Transformers

Anatoli Saveliev¹, Anna Schröder¹, Andreas Kurz²

¹Maschinenfabrik Reinhausen GmbH, Germany; ²MESSKO GmbH, Germany

Transformers Bushings: Capacitance Differences Between Factory Acceptance Tests and Onsite Tests

Jean Sanchez, Safire Santos Da Silva

EDF, France

A Techno Economic Model for Evaluating Low Loss Power Transformers

Samir Keitoue, Tomislav Pavičić

Koncar Power Transformers Ltd, Croatia