Electromagnetic Interference Mitigation in a High Voltage Inspection Robot

摘要

A challenge in developing any electronic system to be operated near high voltage power lines, is achieving reliability in environments associated with electromagnetic interference. In this paper, success was achieved in the characterization and mitigation of the effects of the interference that an inspection robot would experience during proximity dielectric breakdown, electromagnetic coupling and electric arcing to a robot chassis. The source (electric arc) tested was found to couple to communication lines with a magnitude disruptive to Universal Serial Bus communications. Shielding was adequate to mitigate this interference, but when arcing occurred to the chassis itself, it needed to be controlled to maintain the integrity of the shield.