Distributed Controllers Seeking AC Optimal Power Flow Solutions Using ADMM

Journal Article · Mon Feb 20 00:00:00 EST 2017 · IEEE Transactions on Smart Grid

DOI:https://doi.org/10.1109/TSG.2017.2662639· OSTI ID:1475122

Zhang, Yijian ^[1]; Hong, Mingyi ^[1]; Dall'Anese, Emiliano ^[2]; Dhople, Sairaj V. ^[3]; Xu, Zi ^[4]

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1. Iowa State Univ., Ames, IA (United States)
2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
3. Univ. of Minnesota, Minneapolis, MN (United States)
4. Shanghai Univ. (China)

This paper focuses on power distribution systems with inverter-interfaced renewable energy sources (RESs), and develops a distributed control framework to steer the RES output powers to solutions of ac optimal power flow (OPF) problems. The design of the distributed control algorithm is based on suitable linear approximation of the ac power-flow equations, and leverages the so-called alternating direction method of multipliers (ADMM). Convergence of the RES-inverter output powers to solutions of the approximate ac OPF problem is established under suitable conditions on the mismatches between the commanded setpoints and actual RES output powers. Overall, since the proposed scheme can be cast as an ADMM with inexact primal and dual updates, the convergence results can be applied to more general distributed optimization settings.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE National Renewable Energy Laboratory (NREL), Laboratory Directed Research and Development (LDRD) Program
• Grant/Contract Number: AC36-08GO28308
• OSTI ID: 1475122
• Report Number(s): NREL/JA--5D00-67745
• Journal Information: IEEE Transactions on Smart Grid, Journal Name: IEEE Transactions on Smart Grid Journal Issue: 5 Vol. 9; ISSN 1949-3053
• Publisher: IEEE
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
ADMM
distributed algorithms
distribution systems
optimal power flow
renewable energy sources