Smart Microgrid Energy Management System Design and Implementation

This document presents a comprehensive study on the design and implementation of a smart microgrid energy management system (MEMS). It begins by reviewing the research status of microgrids globally, highlighting differences in focus: the U.S. emphasizes power quality and reliability, Europe focuses on multi-microgrid interconnection and value chain optimization, and Japan prioritizes renewable energy integration and energy storage control. The core of MEMS is introduced as a dispatching automation system that provides real-time information, scheduling decisions, and control to ensure safe, high-quality, and economical microgrid operation. Key functional modules are detailed, including data acquisition, prediction, historical storage, report statistics, optimization decision-making, and information release. The system architecture integrates SCADA, DER controllers, and remote terminal units. Mathematical models and solution algorithms for optimal microgrid dispatching are discussed, addressing technical challenges such as power forecasting, energy storage management, load shedding, and transition between grid-connected and isolated modes. The document concludes with a summary of technical difficulties and challenges, emphasizing the need for stable voltage and frequency control, economic management, and black start capabilities.