Comparison of Protection Settings Used by Electrical Utilities in the Western US and Canada to Reduce Wildfire Ignition Risk

Research has found that many other utilities have begun to implement fast trip settings for several years, but with a wide variety of setting criteria. The utilities surveyed are also looking at newer advanced technologies to detect high-impedance faults, falling or broken conductors, and sensitive ground settings. Most of the utilities surveyed are in the testing or pilot phase of evaluating these new technologies. It is understood that many of these measures may impact reliability. Potential fire risk reductions will need to be weighed with reliability impacts (false trips, power shutoffs, etc.). These tradeoffs will differ between utilities based upon the inherent risk profiles between utilities.

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Author: Erik Madsen, Gene Hanes, James Tuccillo, Scott Hayes

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