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DC and AC Microgrids

DC and AC Microgrids. Prof. Pavol Bauer Dr. Laura Ram í rez. Contents. Required Knowledge Course Overview : What you’ll learn edX Course Reader Detailed Learning Objectives. 2. Required Knowledge. This course is intended for students with the following background:

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DC and AC Microgrids

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  1. DC and AC Microgrids Prof. Pavol Bauer Dr. Laura Ramírez

  2. Contents • Required Knowledge • Course Overview: Whatyou’lllearn • edX Course • Reader • Detailed Learning Objectives 2

  3. Required Knowledge • This course is intendedforstudentswiththefollowing background: • Fundamentals of electrical circuits and power systems • Power Electronic Conversion • Basics on Control Theory • Basics on Matlabmodelling 3

  4. Overview: Whatyou’lllearn • The difference between a microgrid, a passive distribution grid and a virtual power plant • The difference between internal and external markets for microgrids, including a description of the key actors involved • Operation of centralized and decentralized control • Operation of active power control and voltage regulation • Evaluation of different strategies to control multiple inverters and to analyze local control to improve stability • Different layouts and topologies of microgrids and power electronic components, and the role of power electronics converters in microgrids • Microgrid protection, adaptive protection, and the consequences of using a fault current source and fault current limitation • Main motivations and challenges of DC microgrids

  5. Course Overview: Four Layers of Microgrids 5

  6. edX Course 6

  7. Reader

  8. Detailed Learning Objectives Prof. Pavol Bauer Dr. Laura Ramírez

  9. Definitions and Basic Concepts 9

  10. Electrical Components & Layouts • Classify the role of different components of a microgrid (like PV solar systems) • Differentiate architectures (topologies) of a microgrid • Identify needed converters depending on topology for different components 10

  11. Control (1) • Understand primary, secondary, and tertiary control in conventional power systems and microgrids • Describe and make calculation related to the operation of active and reactive power in resistive and inductive lines • Explain and discuss the following control strategies for multiple inverters: Master Slave Control Scheme, Droop Control Implementation, Secondary Control Loops • Explain how can local controls can enhance the performance of microgrids (assignment) 11

  12. Control (2) • Classify different communication and standards in microgrids • Explain the following concepts: microgridcentral controller (MGCC), distribution management system (DMS) • Describe the difference between centralized, distributed, and decentralized control • List the key attributes that affect the performance of the control algorithms • Discuss the importance of using forecasting for the control of a microgrid • Differentiate business models in a microgrid 12

  13. DC Microgrids • Mention some of the main motivations to opt for DC microgrids • Mention some of the main challenges for the implementation of DC microgrids • Describe the topologies that are suitable for DC microgrids 13

  14. Protection • Describe the main challenges of protection in AC and DC microgrids • Classify various protection schemes applicable in Microgrids • Explain the concept of adaptive protection for microgrids • Analyse a case study for a centralized adaptive protection system for a LV microgrid • Describe the effect of fault current limitation in microgrids • Understand grounding aspects in microgrids 14

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