Optimal Energy Managment Framework Strategies and Approches for Grid Connected Microgrid

Abstract

newline The proliferation of the renewable energy sources (RES) provides the newline sustainable development in the power system to meet the increasing demand. The newline uncertainty in the renewable energy and load demand poses the challenge for reliable newline powerflowandenergymanagementinthemicrogrid. Thebatteryenergystoragesystem newline is a promising solution for energy management and it can be effectively support to meet newline the power demand in conjunction with the renewable energy. Energy management in newline grid connected DC microgrid is a complex and challenging in the presence of stochastic newline nature of renewable energy sources and load demand. Coping with the deficit power, newline peak demand and power converter control operations are few major concerns. The newline renewable energy sources such as photovoltaic (PV) system, wind turbine system and newline battery energy storage system (BESS) utilization need special attention for the reliable newline and efficient operation of the DC microgrid during grid connected mode and islanded newline mode. newline This thesis explores innovative energy management framework with an newline integration of the various renewable energy sources and battery energy storage system in newline the DC microgrid system. The energy management framework can potentially address newline the maximum utilization of renewable energy sources, effective battery energy storage newline system operation, optimal load shedding operation and optimal import/export power to newline the utility grid in the DC microgrid system which reduces the burden on the utility grid. newline The research work carried out with the comprehensive review on the microgrid design newline and structure, and energy management strategies which includes the control techniques newline and optimization methods for grid operation. Additionally, effect of intermittent nature newline of renewable energy sources, load demand profile and state of charge (SOC) of battery newline energy storage system on DC bus voltage regulation and power fluctuation are also newline considered in the DC microgrid operation. Subsequently, the need for effective energy newline ix newlinex newline manag