Improving the Reliability of Electric Grid Infrastructure: Case Study of Firewalls Manufactured with Fiber Reinforced Inorganics (FRI)

摘要

The author's company has dedicated itself to sustaining and improving the reliability of the electric power grid. The core of the problem is that the paper insulation which is used in transformer coils deteriorates over the design life of the equipment (typically 35 years). Phenomena of viscoelastic-induced coil-buckling and significant loss of dielectric strength have been reported and documented. Both, the mechanical and dielectric deterioration occur in a transformer-tank which holds between 10,000 and 20,000 gallons of highly refined mineral oil. A spark may start a transformer fire, a much feared phenomenon in aged equipment. The real life problem is that a fire may spread to neighboring transformers and thereby impair the electric grid generation or distribution capability for several years. This paper highlights a modular, lightweight composite firewall design that was developed by the author's company to mitigate the fire risk.Prof. Cardon, through his illness, remained extremely interested in these developments and the blend between fundamental and applied durability engineering which they represented. As a former student, disciple, and later as a colleague of Prof. Cardon the author is pleased and honored to share these developments with his friends, colleagues, and collaborators.