Optimization Analysis of a Stand-Alone Hybrid Energy System for the Class Room at RLJIT, Doddaballapur, Southern Part of India

Abstract

AbstractIn this present work, the hybrid energy systems are used for replacing power grid electricity that is presently used for electrifying the lecture halls, in mechanical department of RLJIT, Doddaballapur, Bengaluru. There is lack of energy resources day by day and also increase in energy demand. This is where hybrid energy systems come into picture. A hybrid energy system is a combination of two or more renewable or non-renewable energy resources used for generation of electricity. The depletion of conventional energies leads to usage of hybrid systems to meet the growing energy needs and generation of electricity. In this study, a hybrid system of solar–wind–battery–diesel energy system is used as substitute for the grid power supply. The average monthly power required for lecture halls is calculated using respective methods. Solar irradiance and wind speed data have been collected from NASA’s POWER Data Access Viewer. The battery bank is used to store the energy produced from the renewable energy sources. Diesel generator is used for power generation when all other sources are at rest. This paper focuses on the usage of technique for order of preference by similarity to ideal solution (TOPSIS) method for getting the enhanced energy resource among the combination of these energy resources. Various combinations of hybrid energy systems are compared and analyzed with TOPSIS. Different criteria like capital cost, maintenance cost, availability, emission, etc., are also studied in this TOPSIS method, and also many alternatives are considered to get accurate results. The results show that the combination of solar–battery–diesel hybrid energy system is optimal combination for power supply to the lecture halls.KeywordsSolar energyWind energyMCDMOptimizationTOPSIS