Abstract
The power generation and consumption of distributed energy resources (DERs) offer significant flexibility potential, which can be utilized to provide services such as peak and frequency regulation. DERs introduce a vast number of variables and constraints, making it complicated to directly integrate them into upper-level dispatch. To address this challenge, virtual power plants (VPPs) emerge, which treat diverse DERs as a collective entity and use aggregated flexibility envelopes to reduce the variable and constraint scale, facilitating upper-level optimization. In VPPs, unified DER modeling and efficient DER aggregation play a crucial role but are challenging. This paper first introduces a novel unified polytope model to represent heterogenous DERs' flexibility region. A coordination transformation is utilized to eliminate redundant variable dimensions and maintain DERs' interface characteristics. A sample-based projection method is then developed, further removing all state variables, resulting in a unified flexibility region. This method is then utilized to calculate the Minkowski sums of individual flexibility polytopes for aggregation. The results of numerical tests demonstrate a considerable reduction in computation time and maintain satisfactory accuracy when the proposed modeling and aggregation approach is adopted.
Original language | English |
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Title of host publication | 2024 IEEE Power and Energy Society General Meeting, PESGM 2024 |
Publisher | IEEE |
Number of pages | 5 |
ISBN (Electronic) | 9798350381832 |
DOIs | |
Publication status | Published - 2024 |
Event | 2024 IEEE Power and Energy Society General Meeting, PESGM 2024 - Seattle, United States Duration: 21 Jul 2024 → 25 Jul 2024 |
Publication series
Name | IEEE Power and Energy Society General Meeting |
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ISSN (Print) | 1944-9925 |
ISSN (Electronic) | 1944-9933 |
Conference
Conference | 2024 IEEE Power and Energy Society General Meeting, PESGM 2024 |
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Country/Territory | United States |
City | Seattle |
Period | 21/07/24 → 25/07/24 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Keywords
- distributed energy resources
- load aggregation
- polytope
- Virtual power plant