Assessing the Impact of Achieving Optimal Economic Dispatch on Delay Margin of Distributed Secondary Control

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Abstract

The incremental cost (IC) has been equalized through means of distributed control in the literature to achieve optimal generation. Yet, the IC can be linear or nonlinear depending on the cost characteristics of the distributed generators (DG). Unstable microgrids can occur due to communication delays when distributed control is utilized. Prior research has examined the impact of communication delays and has determined the specific delay at which the system experiences instability. This paper analyzes the effect of nonlinear IC on the delay margin. A small-signal model has been created that contains IC equalizing and frequency restoration secondary controllers. Communication delays in the links have been taken into account within the constructed model. It has been concluded the delay margin differs from one loading condition to another, and the reliability is, accordingly, impacted.

Original languageBritish English
Title of host publicationIECON 2023 - 49th Annual Conference of the IEEE Industrial Electronics Society
PublisherIEEE Computer Society
ISBN (Electronic)9798350331820
DOIs
StatePublished - 2023
Event49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023 - Singapore, Singapore
Duration: 16 Oct 202319 Oct 2023

Publication series

NameIECON Proceedings (Industrial Electronics Conference)
ISSN (Print)2162-4704
ISSN (Electronic)2577-1647

Conference

Conference49th Annual Conference of the IEEE Industrial Electronics Society, IECON 2023
Country/TerritorySingapore
CitySingapore
Period16/10/2319/10/23

Keywords

  • communication delay
  • distributed control
  • Economic dispatch
  • microgrid stability
  • nonlinear incremental cost

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