Risk Analysis of Power Transmission Infrastructure for Sustainable Development: A Case Study of the Nigerian 330 kV- 41 Bus Network

Abstract

This study was aimed at risk assessment of the electrical power system network in Nigeria. The Nigeria 330kV 41-Bus network was employed in this study, sampling five transmission stations of Birnin Kebbi, Gwagwalada, Benin, Onitsha and Ikeja. The traditional modelling risk assessment index was employed in this study, using mathematical relationships to determine the failure rate, reliability, probability of failure and risk index of the five transmission stations sampled. The results obtained from the analysis were presented in tabular and graphical forms. From the analysis, it was discovered that Birnin Kebbi Transmission Station has the highest reliability of 98% while Gwagwalada Transmission Station has the least reliability of 75%. It was also found in the study that Ikeja Transmission Station has the highest risk index of 83.39. This shows that failure of the transmission station will have the highest impact on the economy of the country. This is largely due to the power delivered by the transmission station and the number of consumers the station serves. Therefore, among other, it was recommended that since Ikeja supplies enormous power and the probability of failure of the station is high, the equipment used for power transmission should be made adequate to forestall imminent failure, resulting to high-risk index.