Feasibility Study of Standalone Hybrid Wind-PV-Battery Microgrid Operation

Abstract

This paper presents techno-economic analysis of hybrid wind-PV-battery based microgrid in standalone mode for technical university campus located in north-west Indian state Rajasthan. Generation unit consists of NPS100C-21 wind turbine, Tata TS250 PV module, Leonics Appolo series converter and Cellcube series battery bank. Hourly wind profile, solar data and electrical load of previous one year has been used to simulate thousands of cases to obtain optimal microgrid operation in terms of cost and number of generating units. Converter unit regulates voltage in AC and DC bus-bar. Battery acts as active power source and backup unit to meet additional power demand when wind-PV generation is deficit. This paper aims to find a feasible solution to make university campus free from fossil fuel based energy sources. Simulation results have been established under varying meteorological conditions and load data. Site lies in low wind region and maximum wind penetration is observed to be 19.5%. COE of considered generation unit is obtained as $0.238 with renewable fraction of 100%. Obtained optimal generation unit is competitive with grid extension in terms of techno-economic feasibility.