Coordinated power management and control of renewable energy sources based smart grid

摘要

Renewable energy-based smart grids are famousnowadays due to their high intellectual properties. Theworld is starting new inventions in renewable energybasedelectrical power generation systems to reduce globalwarming. However, a single renewable energy sourcecannot maintain a proper energy management system andreliability of power towards loads. Hence, integrating twoor more systems is very important and can form a smartgrid with an appropriate energy management system.Effective energy management system for a 4-wire 1-MWsmart grid system is proposed in this paper. The system iscomposed of three solar plants and three wind farms with abattery bank. The battery energy management system canoperate the complete system as a smart grid with the properdesign of the controllers. The maximum power points of PVplants are tracked using a hybrid algorithm that merges themerits of Modified Invasive Weed Optimization and Perturband Observe (PO). Thus, the maximum power isobtained under partial shading conditions. The PO algorithmis also developed to track the maximum power ofwind farms. All the loads and generation units are connectedin a ring-configuration distribution with acentralized battery energy management system. The loadsare selected to be unbalanced, nonlinear and reactive tosimulate practical cases. TS-Fuzzy based common invertercontroller is implemented to maintain acceptable powerquality, which is linked to the battery. The proposedinverter controller can work as a reactive power compensator,active power filter, voltage regulator under unbalancedload, and power balancing device betweengeneration and load. Extensive Hardware-in-Loop (HIL)results are presented to validate the effectiveness of theproposed system.