TY - CONF
T1 - Decentralized control of distributed energy resources in radial distribution systems
T2 - 2016 IEEE International Conference on Smart Grid Communications (SmartGridComm)
Y1 - 2016/11//
SP - 296
EP - 301
A1 - Weixuan Lin
A1 - Eilyan Bitar
KW - RM14-002
AB - We consider the decentralized control of radial distribution systems with controllable photovoltaic inverters and storage devices. For such systems, we consider the problem of designing controllers that minimize the expected cost of meeting demand, while respecting distribution system and resource constraints. Employing a linear approximation of the branch flow model, we formulate this problem as the design of a decentralized disturbance-feedback controller that minimizes the expected value of a convex quadratic cost function, subject to convex quadratic constraints on the state and input. As such problems are, in general, computationally intractable, we derive an inner approximation to this decentralized control problem, which enables the efficient computation of an affine control policy via the solution of a conic program. As affine policies are, in general, suboptimal for the systems considered, we provide an efficient method to bound their suboptimality via the solution of another conic program. A case study of a 12 kV radial distribution feeder demonstrates that decentralized affine controllers can perform close to optimal.
JF - 2016 IEEE International Conference on Smart Grid Communications (SmartGridComm)
PB - IEEE
CY - Sydney, Australia
DO - 10.1109/SmartGridComm.2016.7778777
ER -