Abstract
Existing algorithms to solve alternating-current optimal power flow (AC-OPF) often exploit linear approximations to simplify system models and accelerate computations. In this paper, we improve a recent hierarchical OPF algorithm, which rested on primal-dual gradients evaluated in a linearized distribution power flow model. Specifically, we identify a risk of voltage violation arising from the model linearization, and propose a more accurate gradient evaluation method to eliminate that risk. We further develop a hierarchical primal-dual algorithm to solve OPF based on the proposed gradient evaluation method. Numerical results on IEEE networks show that our algorithm can enhance voltage safety with satisfactory computational efficiency.
Original language | American English |
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Pages | 4547-4552 |
Number of pages | 6 |
DOIs | |
State | Published - 2022 |
Event | 2022 American Control Conference, ACC 2022 - Atlanta, United States Duration: 8 Jun 2022 → 10 Jun 2022 |
Conference
Conference | 2022 American Control Conference, ACC 2022 |
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Country/Territory | United States |
City | Atlanta |
Period | 8/06/22 → 10/06/22 |
Bibliographical note
Publisher Copyright:© 2022 American Automatic Control Council.
NREL Publication Number
- NREL/CP-5D00-84186
Keywords
- distributed algorithm
- distritbution system
- hierarchical algorithm
- optimal power flow