This paper considers power distribution systems featuring renewable energy sources (RESs), and it develops a distributed optimization method to steer the RES output powers to solutions of AC optimal power flow (OPF) problems. The design of the proposed method leverages suitable linear approximations of the AC power-flow equations, and it is based on the alternating direction method of multipliers (ADMM). Convergence of the RES-inverter output powers to solutions of the OPF problem is established under suitable conditions on the stepsize as well as mismatches between the commanded setpoints and actual RES output powers. In a broad sense, the methods and results proposed here are also applicable to other distributed optimization problem setups with ADMM and inexact dual updates.
|Original language||English (US)|
|Title of host publication||2017 American Control Conference, ACC 2017|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Number of pages||6|
|State||Published - Jun 29 2017|
|Event||2017 American Control Conference, ACC 2017 - Seattle, United States|
Duration: May 24 2017 → May 26 2017
|Name||Proceedings of the American Control Conference|
|Other||2017 American Control Conference, ACC 2017|
|Period||5/24/17 → 5/26/17|
Bibliographical noteFunding Information:
This work was supported by the U.S. Department of Energy under Contract No. DE-AC36-08GO28308 with the National Renewable Energy Laboratory (NREL). Funding provided by the Laboratory Directed Research and Development Program at NREL.