New Insulating Fluids and Diagnostic Techniques for Paper-Oil Insulated Equipment(1)

In 2021, the International Council on Large Electric Systems (CIGRE) will celebrate its centenary. CIGRE Sessions are traditionally held face-to-face in Paris once every even-numbered year. However, in 2020, in response to the coronavirus pandemic, the organizers of the 48th CIGRE Session decided to hold a virtual meeting for experts, specialists, engineers, and researchers from all over the world. The result was an e-session that included engaging seminars, tutorials, and discussions. At the virtual meeting, participants discussed various problems and challenges currently affecting all areas of the energy sector. Current pressing issues include the development of informative diagnostic techniques for oil-filled equipment, as well as the potential applicability of environmentally friendly biodegradable synthetic and natural esters for use as liquid insulation in high-voltage equipment. This review presents the latest research, practical solutions and reports on the experience of applying new techniques and novel liquid insulating materials. Valuable and up-to-date information in these fields is provided by experts and specialists from all over the world.