FREQUENCY AND DURATION METHOD RELIABILITY ANALYSIS: CASE STUDY OF BAMA AND UNIVERSITY 33KV DISTRIBUTION FEEDER MAIDUGURI
Kalli, B. M 1, Modu M Tijjani2, Sadiq A. Goni3, Babagana M. Digol4, Hajja I. Usman5 and Tijjani, B. N6
Department of Electrical/Electronic Engineering,
Ramat polytechnic Maiduguri, Nigeria.
Email: kallibmai@gmail.com
Abstract
Failures in distribution systems not only reduce reliability of power system but also have significant effects on power quality since one of the important components of any system quality is reliability of that system. To enhance utility reliability, failure analysis and its frequency must be studied. This paper describes a case study of the reliability of 33Kv distribution feeders (Bama and University) .The information obtained from Transmission Company of Nigeria along Baga Road. Reliability indices such as the MTBF and MTTR are determined, analytically, by using outage information gathered from the Transmission Company. The study generally shows that the distribution feeders have not been adequately maintained leading to frequent and delayed forced outage indicating unreliable performance of the individual units and the entire station.