The introduction of several small and large-scale industries, malls, shopping complexes, and domestic applications has significantly increased energy consumption. The aim of the work is to simulate a technically viable and economically optimum hybrid power system for residential buildings. The proposed micro-grid model includes four power generators: solar power, wind power, Electricity Board (EB) source, and a Diesel Generator (DG) set, with solar and wind power performing as major sources and the EB supply and DG set serving as backup sources. The core issue in direct current to alternate current conversion is harmonics distortion, a five-stage multilevel inverter is employed with the assistance of an intelligent control system is simulated and the optimum system configuration is estimated to reduce harmonics and improve the power quality. The monthly demand for residential buildings is 13-15 Megawatts. So, almost 433 Kilo-Watts (KW) of electricity is required every day, and if it is used for 8 h per day, 50-60 KW of electricity is needed per hour. The overall micro-grid model's operation and performance are established using MATLAB/SIMULINK software, and simulation results are provided. The simulation results show that the developed system is both cost-effective and environment friendly resulting in yearly cost reductions.
Due to smart grids various energy storage technologies emerged and their integration into smart grids became cost effective. Dynamic Voltage restorer is one of the products which provides compensation for voltage sag and swell in power systems with energy storage integration technologies. In this work Ultra Capacitors (UACP), Superconducting Magnetic Energy Storage (SMES) & PV Cell is integrated to compensate for the sag and swell in power systems. The main purpose of integration is that UACP have lower energy densities, mostly used for low voltage applications. With SMES-PV Cell integration sag and swell can be compensated even for high voltage applications. This integration improves power quality by compensation sag and swell without depending on the grid. UACP, SMES are integrated to the DVR through the bi-directional converter which provides steady DC voltage at the DC link. In this work operation of SMES, UACP, DC-DC converter are discussed. All the simulation work has been carried out using the MATLAB software, the voltage sag and the swell has been maintained in the stable condition.
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