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Commonly used terms in the Electrical industry.
forced outage
the unscheduled interruption of electric power to a portion of a power system due to equipment failure, weather conditions, or other mishaps.
forced outage rate
a measure of performance usually applied to generation units. It is the ratio of equipment down-time vs. the total time that the unit is available for operation.
line outage distribution factor
a ratio used in contingency analysis. Given two parallel lines in a power system called x and y, assume that line y is removed from service. The line outage distribution factor of line x for the outage of line y is the ratio of the change in power flow on line x to the flow on line y before the outage.
outage
(1) the percentage of time or area for which a communication system does not provide acceptable quality.
(2) loss of power from all or part of a power system.
outage inferencing
the act of identifying the probable location of an outage based on information received from customer trouble calls and power monitoring units.