International Journal of Engineering Research and General Science

6-13

Authors: Ekuru Ebyau Edward1, Andima Moses2 Geofrey Bakkabulindi3 Prof. Latin Okidi4

In this study, the subject of Economic Dispatch (ED) for a hybrid power network comprising of renewable energy (662 kWp Solar PV), non-renewable diesel generators (500, 320, 200 KVA) and energy storage system (655 kWh for 10 hour) is considered. The study which sought to determine an economic operation of the hybrid system by optimizing generation, energy storage and discharge. The study also considered silent costs such as: starting, shut, ramping and storage costs for all the associated units. This ED was formulated as an optimization problem solved using Mixed Linear Integer Programing techniques (MILP). The results indicated a total daily cost of USD. 3780.9 for a total load of 7.94 MW with poor PV generation up take. The study proposed a load increase and profiles which resulted into a total generation of 10.2 MW with a cost of USD 2,065.4 with over 95% PV utilisation. Overall, the results indicate that renewable energy dispatch in a hybrid mode does not necessary present the most economical dispatch under all conditions.

25-28

Authors: Prof. C. Santhamma

A method for the expansion of (a+b+c+d+e+…….. m terms)n (+ve integer) raised to the power of any +ve integer is carried out using the basic principles laid down by Jagadguru Sankaracharya of Puri Mutt (Sri Bharati Krishna Tirtha Maharaja). The procedure adopted by considering the sum of seven elements being raised to the positive integer four. This finds application in determining roots of numbers including decimals and also of the imperfect roots. The method is applicable in the determination of roots of polynomials and is most general for any number of elements the sum of which being raised to any +ve integer.