Reliability Evaluation of Power Distribution Network Considering Uncertainty in Failure

M. Azhar Khan; Shailja Shukla

doi:10.37591/joma.v1i1.7291

Abstract

With the development of economy and society power planning is facing with the influence of much uncertainty, which are mainly power distribution network. Power system especially at the distribution level is prone to failures and disturbances as many devices are responsible for the successful operation of a radial distribution system. Every time an engineer takes a measurement, the only certainty is that the measurement is not exact; all measurements have some amount of uncertainty associated with them. You may come to the conclusion that since all of the measurements were very close, you know your weight “accurately”. But it is most likely that the bathroom scale has an error (for example, a zero offset) and you have very accurately got the wrong answer. Things that failure rate of a distribution network component are usually assumed to be constant in conventional reliability evaluation of distribution network. It has been realized from the real-time operation that a component will experience more failures during heavy loading condition. Than those during light loading condition, which means that the failure rate of a component in real-time operation is not constant and varies with loading condition. In order to improve the reliability evaluation to the distribution network, uncertainty factors about failure rate considered under conventional reliability analysis of distribution system in the work.