Polaris 2022 Technical Advisory Committee

Our Technical Advisory Committee has a vast wealth of industry knowledge and has worked hard to develop an exciting and innovative programme, which brings together a wide range of international industry experts and leading decision makers.

Ian Hunter

Polaris Diagnostics & Engineering Ltd

Ian has 30 years’ experience in the electricity industry. During his 21 years with Scottish Power he gained extensive experience in both transmission and distribution engineering. His focus during his first 10 years was on distribution, up to 33kV, in the fields of construction, system design and field operations – where he was a senior authorised person. He then went on to become a transformer specialist and senior transmission design engineer, responsible for the company’s transformer assets, up to 400kV. Ian also took the technical lead in transformer related R&D, condition assessments, faults and defect investigations.

Since founding Polaris Diagnostics & Engineering Ltd in 2011, Ian (as Technical Director) specialises in all aspects of transformer life cycle and fleet management and has represented various clients as an expert witness in transformer related disputes. He has 19 publications which have been presented to national and international conferences and technical journals. He is a UK representative on CIGRE WG A2.58 “Installation & Pre Commissioning of Transformers & Reactors”.

Ian holds a bachelor’s degree in electrical and electronic engineering and a master’s degree in electrical power engineering, both from the University of Strathclyde. He is currently carrying out research into transformer bushings which will lead to a PhD. He is a chartered engineer (CEng), a fellow of the Institution of Engineering & Technology (FIET), a senior member of the Institute of Electrical & Electronics Engineers (SMIEEE), an associate member of the Institution of Fire Engineers (AIFireE) and an affiliate of the Chartered Society of Forensic Science.

Ian Hunter

Tom Breckinridge


With over 40 years’ experience in power engineering, Tom is a Consultant operating through TB TCS Ltd.  He provides specialist technical support on a global basis in all areas of power transformer ownership and operation including specification, procurement support, design reviews, manufacturing inspections, witness testing, condition assessment and failure investigation.

Tom is active in the standards arena as a member of BSI PEL/14 committee for Power Transformers. He is a member of a number of IEC maintenance teams currently developing and updating international standards in the power transformer field.  Tom is also the Editor-in-Chief of the Cigre “Green Book” on transformer procurement.

Prior to founding TB TCS Ltd in 2006, Tom was the senior transformer specialist for SP Energy Networks covering all aspects of transformers within the business. His primary responsibility was for specification and technical approval of transformer contracts from 420kV down to 240 volts.

Tom has a Bachelor’s Degree in Electrical and Electronic Engineering from the University of Glasgow and a Master of Business Administration Degree from Strathclyde Graduate Business School.  He is a registered European Engineer, a Fellow of the IET and a Chartered Engineer.

Tom Breckenridge

David Walker

SP Energy Networks

David Walker has nearly 40 years’ experience working with SP Energy Networks.

Following completion of his engineering training in 1991, he progressed through the organisation to become the Lead Engineer for transformers and has responsibility for transformers and reactors from 11kV to 400kV, and 25kVA to 1000MVA. With a wealth of industry knowledge, David has provided operational support and specialist technical guidance in relation to all plant types including the investigation of plant and switchgear failures on the SP Energy Networks system.

David also represents the Energy Networks Association (ENA) on two BSI committees; PEL14 (Power transformers) and GEL10 (Fluids for electrotechnical applications) and attends IEC TC10 and TC14 on their behalf. He is an active member of a number of IEC groups and is the convenor of MT22, IEC 60422-Mineral insulating oils in electrical equipment – supervision and maintenance guidance. He is also the convener of the MT responsible for the revision of BS148.

As an individual member of Cigre and UK Regular Member for A2 (Transformers) 2016 – 2020, David has been involved in a number of Cigre working groups; A2.49 Condition Assessment of Power Transformers, A2.48 Technology and Utilisation of Oil Insulated High Voltage Shunt Reactors, A2.55 Life extension of oil filled transformers and Shunt Reactors and Cigre task force looking at transformer “End of Life”.

Currently, he is a member of D1/A2.77 Liquid Tests for Electrical Equipment.

David Walker

Gordon Wilson

National Grid

Gordon Wilson is a senior innovation engineer at National Grid. He is responsible for managing NIA (Network Innovation Allowance) projects on transformers, switchgear and alternatives to SF6. As well as this, Gordon is aiso developing an HV test substation in North Wales as part of a NIC (Network Innovation Competition) project.

Gordon joined National Grid in 1999 after completing a National Grid-sponsored Ph.D. in chemistry at the University of Surrey.  Over the last 20 years he has primarily worked on transformers and insulating materials. Throughout his career, Gordon has been involved in research and development and has sponsored several PhD students at Cranfield and Cardiff Universities, University of Manchester and University of Southampton, where he is a visiting fellow.

He is a member of BSi National Committee GEL/10 for electrotechnical fluids, CIGRE Advisory Group D1.01 for liquid and liquid impregnated insulation systems. He has also represented the UK in several IEC and CIGRE groups related to oil and transformer ratings.

Gordon Wilson

Martin Judd

High Frequency Diagnostics and Engineering

Dr Martin Judd is Technical Director of High Frequency Diagnostics and Engineering (HFDE), a Scottish company that specialises in condition monitoring and diagnostic techniques for high voltage (HV) electrical insulation systems. His role involves working on-site with electrical utility companies, applying advanced techniques for detecting, diagnosing and monitoring partial discharge (PD) activity in HV equipment such as power transformers, open terminal substations, switchgear and GIS.

Before founding HFDE in 2014, Martin was Professor of High Voltage Technologies at the University of Strathclyde in Glasgow, where he managed the HV Laboratory and pioneered many aspects of the ultra-high frequency (UHF) technique for PD detection.

He has authored more than 250 scientific papers on PD and related topics and was Chair of the UK Universities High Voltage Network Steering Committee from 2012 to 2015. Dr Judd is a member of the IEEE DEIS Diagnostics Technical Committee and is a UK member of two CIGRE working groups, “Improvement to PD measurements for factory and site acceptance tests of power transformers” (A2/D1.51) and “PD measurement on insulation systems stressed from HV power electronics” (D1.74).

Martin Judd