Thomas Renaudin

Electrical engineer

Thomas Renaudin is currently Regional Application Specialist for Circuit Breakers and Power Transformers at OMICRON Energy. He obtained his master's degree in Electrical Engineering from INSA Strasbourg. He joined VATECH T&D Grenoble (later Siemens T&D) in 2006, where he worked as a Field Supervisor and Commissioning Engineer on numerous international electrical switchgear projects. Thomas Renaudin joined OMICRON France in 2009 as a technical applications engineer specializing in primary equipment testing and diagnostics. In 2016, he supported OMICRON's North American team in Toronto, Canada, before returning to Grenoble, France, in 2018.

Valter Pimenta

Regional Automation Sales Engineer

Valter Pimenta is currently a Regional Automation Sales Engineer at MR, specializing in smart, modular solutions for monitoring the condition of power transformers. He provides technical assistance to utilities and industrial customers in selecting and implementing advanced solutions. He has over 15 years of experience in the power transformer industry, with training in technology and digital asset management, and has supported the development of asset management solutions focused on reducing service costs and operational losses.

Dr. Hugo Campelo

Chemical Engineer

Dr. Hugo Campelo has over 15 years of experience in the transformer industry. He is a chemical engineer and holds an industrial doctorate in thermal modeling of large shell-type power transformers from the University of Porto, Portugal. From 2006 to 2009, he began researching transformer thermal management as a consultant, and later, in 2010, he joined Efacec's Transformer Business Unit. Until 2023, he held various R&D and engineering positions at Efacec, ranging from research and development to global management of the group's technology. In 2023, he joined Nynas as a technical expert in the application of transformer oils in power transformers, distribution transformers, instrument transformers, and switchgear. Hugo currently supports technical sales and marketing to external customers and end users throughout Europe, the Middle East, and Africa. He is the author of multiple publications related to transformer modeling, testing, and monitoring. He is also a CIGRE expert who is actively involved in several working groups and is a member of the Spanish TC 10 of the IEC.

Mario Maia

Electrical Engineer

Mario Maia is an electrical engineer with over 30 years of experience in the power transformer industry. He has been working at Efacec Energia since 1995, at the company's power transformer manufacturing facility in Porto, Portugal.

Throughout his career, Mario has become one of Efacec's leading experts in power transformer technology, with a deep specialization in shell-type transformers. His expertise covers the entire spectrum of the discipline: from the physical phenomena that define transformer design to advanced manufacturing processes, factory testing procedures, and quality control.

Mario has held multiple roles within Efacec's transformer business unit, including product manager and various engineering leadership positions in both Portugal and the United States. His responsibilities ranged from coordinating design activities to supervising engineering teams and supporting R&D projects.
He currently holds the position of Director of Engineering for Shell-Type Power Transformers, where he leads the engineering strategy and supports the technological development of shell-type power transformers, helping to ensure innovation, reliability, and excellence in all projects.

Alfonso Mateos

Industrial Electronics and Automation Engineer

Alfonso Mateos holds a degree in Industrial Electronics and Automation Engineering from the University of Salamanca and is a technician in Industrial Automation and Robotics. He has developed his career in the field of industrial control, working in various companies in the sector as a PLC and industrial robot programmer on automation projects for industrial environments.

Since 2020, he has been part of Faramax, where he designs control and monitoring systems for power transformers and reactors. His work focuses on developing control solutions for the supervision and protection of critical electrical equipment. He also works closely with the R&D&I department, providing technical support and participating in the development and evolution of new products.

Riccardo Actis

Mechanical Engineer

Riccardo Actis was born in 1969 He holds a degree in mechanical engineering, obtained from Polytechnic University of Turin in 1995. Today he is the Global Operation Manager of the On-Site Service Department at Sea Marconi, with more than 25 years of experience in organization and follow-up of on-site work activities, in Italy, France, Spain, and other countries (KSA, Argentina, Uruguay, Japan). Riccardo has a deep knowledge of condition-based maintenance, as well as treatment and decontamination techniques of insulating liquids.

Yuri Lomovskyi

Electrical engineer

Yuri Lomovskyi is an electrical engineer with over 15 years of experience in the power transformer industry. He is currently working at Weidmann Electrical Technology AG , focusing on the research and development of electrical insulation systems for AC and DC power transformers.

Throughout his career, Yuri has developed strong expertise in transformer and reactor design, dielectric analysis, and thermal and electromagnetic calculations. His technical background covers the full design cycle of power and converter transformers, including main insulation design, stray loss and overheating analysis using finite element methods, cooling system calculations, tank strength and preparation of order data sheets for key components such as OLTC, bushings, radiators, and cooling systems.

“Stray gassing tests and data as powerful diagnostic tools – real-life examples”

Speaker: Hugo Campelo

"Enhancing Substation Performance and Availability Through Asset Performance Management"

Speaker: Valter Pimenta

“Improved safety during high voltage testing with rapid fault detection”

Speaker: Thomas Renaudin

«Weidmann DPE paper for optimized manufacturing & improved quality»

Speaker: Iurii Lomovskyi 

“Dissociated Phases Shell Transformers: Optimized Design for Transportation and Installation Constraints”

Speaker: Mario Maia

“Advances in digitization and power transformer controls.”

Speaker: Alfonso Mateos

«Breakdown Voltage of insulating liquids – Meaning, testing methods and interpretation of scattering results»

Speaker: Riccardo Actis