Intelligent Load Management in Microgrids

Paper


Kennedy, J., Ciufo, P. and Agalgaonkar, A.. 2012. "Intelligent Load Management in Microgrids." 2012 IEEE Power and Energy Society General Meeting. San Diego, United States 22 - 26 Jul 2012 United States. https://doi.org/10.1109/PESGM.2012.6345729
Paper/Presentation Title

Intelligent Load Management in Microgrids

Presentation TypePaper
AuthorsKennedy, J. (Author), Ciufo, P. (Author) and Agalgaonkar, A. (Author)
Journal or Proceedings TitleProceedings of the 2012 IEEE Power and Energy Society General Meeting
ERA Conference ID50486
Article Number6345729
Number of Pages8
Year2012
Place of PublicationUnited States
ISBN9781467327275
Digital Object Identifier (DOI)https://doi.org/10.1109/PESGM.2012.6345729
Web Address (URL) of Paperhttps://ieeexplore.ieee.org/document/6345729
Conference/Event2012 IEEE Power and Energy Society General Meeting
IEEE Power and Energy Society General Meeting
Event Details
2012 IEEE Power and Energy Society General Meeting
Event Date
22 to end of 26 Jul 2012
Event Location
San Diego, United States
Event Details
IEEE Power and Energy Society General Meeting
PES-GM
Abstract

The increased levels of distributed generator (DG) penetration and the customer demand for high levels of reliability have attributed to the formation of the Microgrid concept. The Microgrid concept contains a variety of technical challenges, including load management and anti-islanding protection discrimination strategies. This paper provides a novel scheme in which loads and DG are able to detect the conditions where the load of the island cannot be sufficiently supplied. In these instances, a load shedding algorithm systematically removes loads from the system until an island can be maintained within satisfactory operating limits utilising the local DG. The concept of an Intelligent Load Shedder (ILS) module is proposed in this paper. This module is connected in series with non-critical loads in order to detect the conditions where that non-essential load should be isolated from an island. This module must be capable of communicating with the static transfer switch (STS), which is the intelligent isolator associated with the island. The STS will also be capable of sending and receiving data with each DG's islanding protection device. The combined algorithmic control of the STS, ILS module and DG islanding protection device forms the Intelligent Load Management algorithm. This algorithm is capable of islanding protection and load shedding irrespective of the use of communications. The algorithms within this paper are simulated using MATLAB script. The results show that, on a theoretical level, the intelligent load management scheme described in this paper can be used to detect the conditions where an insufficient load is available using local parameters. Load shedding coordination is also shown to be possible with and without the use of communications between the STS, ILS module and DG islanding protection module.

KeywordsDistributed power generation; Electric load management
ANZSRC Field of Research 2020400805. Electrical energy transmission, networks and systems
Public Notes

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Byline AffiliationsUniversity of Wollongong
Institution of OriginUniversity of Southern Queensland
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