Protection System Reliability Assessment Considering Competition of Failure Modes

Recent researches of protection reliability mainly focus on models or method of specific problems in protection system reliability assessment and therefore general model and method is lacking. This paper presents a protection system reliability assessment method based on analysis of competitive failure modes, which gives full consideration of combined effects of different failure modes on protection reliability. The assessment results can provide useful information, such as the reliability of the system at the end of the testing time, the reliability growth and the predicted reliability beyond the system testing.