Determination of Load Demand Using Load Estimate Method (LEM) Suitable for Industrial Environment, A Preview of Load Demand Rate at Prototype Engineering Development Institute, Ilesa, Osun State

Abstract

This paper presents the Load Demand Rate of Prototype Engineering Development Institute in the year 2009 when operation actually started and compares to the load demand in the year 2014 as the institute continues  in its growth drive, since more electrical equipment have been procured by the institute for effective operation. The power rating, in watts, of the electrical equipment on ground in 2009 were taken and tabulated as well as those of equipment acquired after 2009 till year 2014. The loads demand of each unit were tabulated and ground total of load for the years under review were obtained in two separate tables from where conversion to KVA ratings of each year were obtained. This comparison shows that there is large difference between the load demands of the two years under consideration, of which the existing transformer may not be able to cope with the present load demand. This study illustrates the application of load estimate method to determining the maximum load demand of an installation with a view to planning against unexpected system’s collapse that could arise from overloading of the substation’s transformer. Load demand Rate for the year under review is 451.87 KVA compared to the Installed transformer rating of 300KVA meaning that load demand rate has increased by 50%. Having obtained the load demand rate of the years under review, conclusion reached was to upgrade the substation’s transformer that supplies the Institute to be able to cope with the present load demand and for future expansion. This research work could be needed in holistic design of all industrial layouts.