Microgrids

Definition

Microgrids are localized sections of the power grid that can operate either in an islanded mode (independent of the main grid) or in a grid-connected mode. They play a crucial role in various applications, such as providing reliable power in remote locations and ensuring a secure supply for critical facilities during grid failures. 

As power system resilience and flexibility become increasingly important, interest in microgrid applications has grown significantly. Emerging concepts, such as organizing the power system as a network of interconnected microgrids (“multi-microgrid systems”), demonstrate the potential of microgrids to enhance grid adaptability and robustness. Additionally, hybrid microgrids that combine AC and DC systems are gaining traction as they offer unique opportunities for improved efficiency and integration of diverse energy resources. 

The planning, design, operation, and control of microgrids have been the focus of extensive research over the years. However, the diversity of approaches calls for the establishment of standardized platforms and procedures for laboratory testing. Such testbeds are essential to understand, validate, and compare microgrid performance under various scenarios. Furthermore, the growing body of standards governing microgrid operation highlights the importance of aligning test platforms with these regulations. 

Challenges

Research and development in the field of microgrids encompass the following critical challenges: 

  • Benchmark Development: Defining appropriate benchmark microgrid systems that accurately represent diverse configurations, compositions, and applications. 
  • Testbed Innovation: Developing and validating advanced laboratory testbeds to facilitate comprehensive microgrid testing. 
  • Standards Compliance: Conducting functional tests of microgrid controllers to ensure compliance with relevant international standards. 
  • Functional Advancements: Designing, testing, and validating new functionalities to enhance microgrid capabilities. 
  • Control Strategy Evaluation: Testing, validating, and comparing microgrid control strategies across different hierarchical control levels. 
  • Device-Level Testing: Evaluating the performance of device-level controllers for specific microgrid applications. 

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