International Journal of Engineering Research

Ganiyu A. Ajenikoko ¹, Anthony A. Olaomi ¹

Affiliations
1 Department of Electronic & Electrical Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, NG

Abstract

Distribution system delivers the transmitted energy to the end users which are customers. This paper develops a generalized polynomial model and compares the coefficients for the assessment of reliability indices of Ilorin distribution system feeders. The results of the coefficients obtained were validated by subjecting the polynomial model to three methods namely: Lagrange Polynomial, Newton and Chebychev Polynomial function methods. The results of the work showed that average values of -7x10^-4, 0.00212, -0.0256, 0.1549, 0.4865 and 0.7049 were obtained as the coefficient values from the Lagrange, Newton and Chebychev polynomial function methods which compare favourably well with the coefficient values of -7x10^-4, 0.0021, -0.0257, 0.1549, -0.4865 and 0.7048 obtained from the simulation results. The knowledge of these coefficients will form a basis for adequate planning and management of power distribution systems.

Keywords

Polynomial, Coefficients, Lagrange, Newton, Chebychev, Reliability Indices, Distribution Systems.

Full Text

   

Ganiyu A. Ajenikoko ¹, Olawale O. Olaluwoye ²

Affiliations
1 Department of Electronic & Electrical Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, NG
2 Department of Electrical and Computer Engineering, Olabisi Onabanjo University, Ibogun Campus, Ago-Iwoye, NG

Abstract

Reliability indices are parametric quantities used to assess the performance levels of electrical power distribution systems.

In this work, a generalized quadratic model is developed for electrical power distribution system contributions to system reliability indices using Ikeja, Port-Harcourt, Kaduna and Kano distribution system feeders as case studies.

The mean System Average Interruption Duration Index (SAIDI), System Average Interruption Frequency Index (SAIFI) and Customer Average Interruption Duration Index (CAIDI) contributions to system reliability indices for Ikeja, Port-Harcourt, Kaduna and Kano distribution systems were 0.0033, 0.0026, 0.0033 and 0.0018 respectively due to the fact that a prolonged period of interruptions was recorded on most of the feeders attached to Port-Harcourt and Kano distribution systems making them to be less reliable compared to Ikeja and Kaduna distribution systems.

The generalized Quadratic model forms a basis for a good design, planning and maintenance of distribution systems at large.

Keywords

Distribution, Feeders’ Contributions, SAIDI, SAIFI, CAIDI, Interruptions, Reliability Indices, Outage, Failure Rate, Load Point Indices.

Full Text

   

Ganiyu A. Ajenikoko ¹, Segun O. Sangotola ¹

Affiliations
1 Department of Electronic & Electrical Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, NG

Abstract

Faults hinder the reliability and sustainability of power systems. Power system faults cannot be totally eliminated but can only be reduced or prevented from frequent occurrence. This paper focuses on the various types of power system faults such as symmetric and asymmetric faults, the effects on the power system reliability, accurate and fast location of the faults and how to minimize the effects on power systems.

Keywords

Faults, Sustainability, Dependability, Reliability, Generator Acceleration, Symmetrical Faults, Asymmetrical Faults, Travelling Wave.

Full Text