Journal of Emerging Trends in Engineering and Applied Sciences: Research Areas

Article Title: Evaluation Of Reliability Of Protective Devices In Power Distribution Network
by Olajuyin E. A., Akinyede J. A., and Akinyede Temitope

Abstract:
Regular power supply is fundamental to the development of the economy of any nations, if there is stable supply of electricity there will be rapid development in such country. Moreover, with the system of prepaid/pay as you consume in place now, it is important that the protective devices employing in the system is very reliable and stable and regular electricity is supply to the consumers. Transformers, feeders, cables, generators and other equipment in power supply suffered a lot from overvoltage and other disturbances. The knowledge of evaluating reliability of protective system of power system will go along way in reducing the outages on the system and it will help the service providers in planning and making decision. Fives years outages data were obtained from the injection substations logbooks from 2015 to 2019 Ikeja Electricity Distribution Company and were used to estimate the failure rate and the reliability of the Protective devices of power systems .The results obtained from the assessment showed that reliability of the protective devices ranged from 95% to 100% and Statistical package was employed to analyses and represent the evaluated failure rates and reliabilities in charts for the period under review. From the obtained results one can conclude that the system of protection in the studied business unit is highly reliable. This method relates reliability theory with the experience gained from statistics and practical knowledge of components failures and maintenance. The findings from this work revealed that the reliability of protective devices ranged from 95% to 100% .This method can be useful in rural and urban distribution systems for planning and making decisions. The submission made reliability supposition a potent tool to support distribution Engineers in solving tricky and complicated problems.

Keywords: Reliability, Assessment, Protective, power, Injection, Substation and Development

Download full paper