REAL TIME ASSESSMENT OF 500-KVA, 11/0.415 KV DISTRIBUTION TRANSFORMER SITUATED AT BELLS UNIVERSITY OF TECHNOLOGY, OTA, OGUN STATE USING FLUKE 435 SERIES II

Abraham Olatide Amole,Kazim Idowu Okusaga,Olufemi Olanrewaju Odekunle,Ikechukwu Joseph Odita

doi:10.29081/jesr.v26i2.164

Abstract

Distribution transformer being major equipment in utility companies deserves to be routinely scrutinized for its performance with a view to ensure continuous supply of energy to end-users as well as to sustain improved revenue collection by the utility company. Presented in this paper is the real time assessment of 500-kVA, 11/0.415 kV distribution transformer situated at Bells University of Technology, Ota, Ogun State using power quality and energy analyzer equipment. The parameters measured on real time include phase to neutral voltage, phase to phase voltage, root mean square and peak current, frequency, active power, reactive and apparent power and line power factor. The assessment revealed wide variation of system voltages far from the standard, however, the line power factor and as well as frequency of operation was observed to be within the standard. Based on this analysis, several findings and appropriate recommendations were suggested to improve the supply of energy in the study area. It is hope that the findings of this research will be of immense benefit to distribution engineers at the Department of works in Bells University of Technology, Ota for field compliance.

Highlights

Distribution transformer is a critical component that can be described as the heart-center of power distribution networks [1], its failure can result into spending of millions of naira to bring it back to health status aside the accompanying prolong downtime
This paper presents real time assessment of 500 kVA, 11/0.415 kV distribution transformer situated at Bells University of Technology, Ota, Ogun State using Fluke 435 Series II
It was connected with an on-line distribution transformer (500-kVA, 11/0.415V) to take measurement of parameters such as RMS voltage (Phase to Phase) magnitude, RMS voltage (Phase to Neutral), peak voltage, RMS current, peak current, frequency, active power, apparent power, reactive power, and power factor

Summary

INTRODUCTION

Distribution transformer is a critical component that can be described as the heart-center of power distribution networks [1], its failure can result into spending of millions of naira to bring it back to health status aside the accompanying prolong downtime. Under normal operating conditions as specified by the manufacturers, distribution transformers are known to enjoy relatively long-life span [2], averagely its life span ranges from 20 to 25 years [3] This kind of transformer is robust and highly susceptible to failure over time due to old age, poor insulation, deterioration of cellulose as well as poor. This paper presents real time assessment of 500 kVA, 11/0.415 kV distribution transformer situated at Bells University of Technology, Ota, Ogun State using Fluke 435 Series II The aim of this assessment is to determine the operating state of this transformer and make appropriate recommendations to works department at Bell University of Technology on the field for compliance with a view to prevent unnecessary interruptions capable of causing embarrassing acute power supply to this world-class university

METHODOLOGY

AND DISCUSSION

CONCLUSIONS