Abstract
The large-scale integration of distributed energy resources (DERs) converts the role of a distribution system from a customer to a prosumer. In this context, the controllable DERs are expected to provide capacity support for the transmission system, which can be considered as power flexibility aggregation. Specifically, it is a process of controlling the power output of DERs to fulfill the desired capacity or flexibility. However, the power output of DERs as control variables is redundant. That is, a power flexibility command can be realized by multiple dispatch alternatives, which may hinder efficient design of control rules and flexibility evaluation schemes. Therefore, this paper introduces a conception of the artificial power flexibility controller to avoid the redundancy issue, which is a converted control variable after reconstructing the DER power region. Through this reconstruction, the DERs can be indirectly controlled by the proposed artificial power flexibility controller. In addition, a Chebyshev centering optimization model is developed to approximate the power flexibility region. At last, the proposed method is verified on an artificially-designed network with multiple DERs.
Original language | American English |
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Number of pages | 5 |
DOIs | |
State | Published - 2022 |
Event | IEEE Power and Energy Society General Meeting - Denver, CO Duration: 17 Jul 2022 → 22 Jul 2022 |
Conference
Conference | IEEE Power and Energy Society General Meeting |
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City | Denver, CO |
Period | 17/07/22 → 22/07/22 |
NREL Publication Number
- NREL/CP-5D00-85005
Keywords
- Chebyshev centering optimization
- power flexibility aggregation