Abstract
The purpose of this paper is to extract the Time-varying Failure Rates (TFR) on power distribution system equipment considering failure modes and regional effects. The extraction of accurate failure rates is important to both power utilities and customers because the rates are the most important factor on the probabilistic number and duration of interruption such as SAIDI, SAIFI, and CAIDI. First, we classified the failure modes into random and aging failures from the record of failure data of Korea Electric Power Corporation (KEPCO) in Korea for representing the constant failure rate by random failure and the increasing failure rate by aging failure. After the classification, the constant failure rate and the increasing failure rate are extracted by using exponential distribution function and the Weibull distribution function, respectively, in order to represent the hazard rate as the normal-operating stage and the aging stage of the bathtub curve. Further, the regional effects are considered by introduction of the regional factor representing regional characteristics such as mean load of the region and pollution level by soil. Finally, in the conclusions of this paper, the curves of the TFRs representing each region of industrial, commercial, remote, seaside, residential, and rural areas are presented .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Electrical Power & Energy Systems
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
