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Applications of Weighted Dynamics Aggregation Modeling in Distributed Generation Systems

  • Author / Creator
    Afshar Nia, Aida

  • It has become increasingly common for power systems to use modular and distributed units to form complex systems. In such large-scale systems, several units with similar structures and control systems are usually interconnected at a Point of Common Coupling (PCC). In such systems, while the higher number of units increases reliability, efficiency, and energy harvesting, it makes system prediction and control system design more challenging. Furthermore, a large number of units interacting with each other and with the rest of the system connected to a PCC can result in unpredictable system behaviors, including oscillations, instability, and undesirable transient responses, which can limit the system's flexibility and scalability. Therefore, it is essential to continuously conduct power system studies to ensure the desired system performance, which demands a computationally efficient and accurate model to analyze and design modular large-scale systems. The weighted dynamic aggregation (WD Agg) method provides an equivalent model for a system consisting of parallel units with the same structure. This thesis applies the WD Agg method to two examples of the distributed generation system: DC microgrids and Doubly-Fed Induction Generator wind farms. The equivalent model mimics the detailed system's behaviour in steady-state and dynamic studies. Therefore, it can be used to study the behavior of the detailed system from a specific output.

  • Subjects / Keywords
  • Graduation date
    Fall 2022
  • Type of Item
    Thesis
  • Degree
    Master of Science
  • DOI
    https://doi.org/10.7939/r3-vj0f-2f82
  • License
    This thesis is made available by the University of Alberta Library with permission of the copyright owner solely for non-commercial purposes. This thesis, or any portion thereof, may not otherwise be copied or reproduced without the written consent of the copyright owner, except to the extent permitted by Canadian copyright law.