Abstract
The main objective of this work is to discuss the significant impacts associated with lightning and electrical surges in large, complex electrical power systems. Electrical systems have evolved significantly in the last 10 years resulting in high penetration of electronics for automation, control, and protection. A representative example of this can be readily observed in the migration from single speed motors to VFD or electro mechanical relays to microprocessor based, multifunction relays. These electronic devices are very sensitive to electrical surges, noise and the presence of harmonics caused by a multitude of sources. These sources, such as variable speed drives, computers, electronic light ballasts, and power supplies, are now embedded in our electrical systems and heighten the need for lightning and surge protection. Paper published with permission.
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