Senja Leivo is the Senior Industry Expert at Vaisala in Finland, specializing in the condition monitoring of power transformers. With 25 years of international industry experience, she plays a crucial role in integrating customer feedback into the company’s research and product development. Notably, she has been a key contributor to the development of Vaisala’s multi-gas DGA monitor and moisture sensors.

Senja is an experienced speaker at industry conferences and has authored numerous publications. Actively engaged in various international research collaborations, she is a member of CIGRE working groups, IEC maintenance teams, and other initiatives focused on transformer condition assessment. She is the Convenor of CIGRE joint working group on “Online moisture monitoring of transformers for ageing assessment” and Finnish representative in CIGRE Study Committee D1.

With a Master of Science degree in Materials Science and Engineering, she possesses a solid academic background complementing her extensive practical experience.

Fabrizio Ferrari was born in Pavia (Italy) in 1968. He is a Senior Advisor for CESI/KEMA, for some major Utilities (e.g. EGP, A2A, ENGIE) and for transformer manufacturers (e.g. TAMINI Trasformatori). He has long time experience in small, medium and large power transformers and the main HV, MV and LV components.

Previous experience as Quality and Environmental Management Systems Responsible in Italian leader transformer manufacturer Groups. Member of IEC/CEI TC 10, TC 14, TC 36 and TC 68, member of CENELEC TC 14, member of CIGRE A.2 and T&D Europe. Chairman of “Transformers Group” in ANIE Energia (Italian Federation associated to Confindustria).

James Reid holds a MSc Reliability Engineering & Safety Management from Heriot Watt University and a BEng Chemical Engineering from University of Edinburgh. He has been a chartered Chemical Engineer with the IChemE since 2002 and is also a member of ASTM. Based in the UK, James leads the technical applications team providing global support for all the ester-based products manufactured by global specialty materials company M&I Materials, including the MIDEL range of dielectric liquids. Prior to joining the technical team at M&I Materials in 2019, James has over two decades experience in technical and operational management roles with major UK utility, leading international chemical, and specialist oil companies.

Jean SANCHEZ is senior transformer engineer at EDF, French main generation utility, mostly on investigations, tests and its associated diagnosis, Factory Acceptance Tests, HV bushings, fleet assessments. He’s involved in IEC and CIGRE working groups. He completed a PhD degree on power transformers fault diagnosis in 2011 with a French power transformer reparation factory, TSV.

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.

Head of the Laboratory for Physical and Chemical Testing since 2016. Main areas of expertise are related to testing of insulating and construction materials with condition assessment, e.g., dissolved gas analysis for transformer condition assessment, insulating oil monitoring, specific requirements and compatibility testing of insulating materials, recommendations for materials and equipment handling, investigations of faults and post-mortem analyses.

Vojko Mrdic has been working as applications engineer in transformer testing group at DV Power, a well-known manufacturer of test and measurement equipment for electric power industry. His responsibilities include development of new methods for transformer testing, providing technical support to DV Power customers, as well as performing on-site field testing. Before joining DV Power 13 years ago, he had been working at the large apparatus manufacturer Energoinvest RAOP for 1 year as a junior engineer in circuit breakers and instrument transformers development department. Vojko has a BSc diploma degree in electrical engineering from the University of East Sarajevo.

Roberto Fernández is an experienced Electrical Engineer who has spent most of his career on the transformer design field and R&D activities focused on the magneto-electric and thermal design for a wide range of transformer applications. He is member of the IEC, CIGRE and several national and international working groups. He is currently the Application Technical Leader at Cargill Bioindustrial.

Alfredo Ortiz Fernández is Professor in the area of Electrical and Energy Engineering at the University of Cantabria.
His research focused on the analysis of the quality of electrical energy, electromagnetic and thermal studies of electrical machines and optimization of energy systems in buildings. On these topics, he has supervised 6 doctoral theses, published 73 publications, 50 of them considered by the Journal of Citation Report (JCR-index), more than 80 congress communications, and 5 book chapters.
He has also participated in several national and European research projects. He has also participated or led several projects contracted by important private companies such as Repsol, Iberdrola, Eon, Gas Natural, Nissan or Robert Bosch. Moreover, he is also Associate Editor of Electrical Engineering-Archiv für Elektrotechnik and he is an active member of national and international working groups in the area of power transformers, such as the Spanish Association for Standardization (UNE), the International Electrotechnical Commission (IEC), the European Commission for Electrotechnical Standardization (CENELEC) and CIGRE.

Field Service engineer since 1976 working for Merlin-Gerin on GIS Switchgear, Schneider Electric Equipment, JST Tranformateurs , following in SIEMENS as African Aera sales Manager and JST Maintenance as business development