A Distributed Augmented Lagrangian Method over Stochastic Networks for Economic Dispatch of Large-Scale Energy Systems

Wicak Ananduta, Carlos Ocampo-Martinez, Angelia Nedic

Research output: Contribution to journalArticleScientificpeer-review

Abstract

In this paper, we propose a distributed model predictive control (MPC) scheme for economic dispatch of energy systems with a large number of active components. The scheme uses a distributed optimization algorithm that works over random communication networks and asynchronous updates, implying the resiliency of the proposed scheme with respect to communication problems, such as link failures, data packet drops, and delays. The distributed optimization algorithm is based on the augmented Lagrangian approach, where the dual of the considered convex economic dispatch problem is solved. Furthermore, in order to improve the convergence speed of the algorithm, we adapt Nesterov's accelerated gradient method and apply the warm start method to initialize the variables. We show through numerical simulations of a well-known case study the performance of the proposed scheme.

Original languageEnglish
Number of pages8
JournalIEEE Transactions on Sustainable Energy
DOIs
Publication statusAccepted/In press - 15 Apr 2021

Keywords

  • Acceleration
  • Communication networks
  • Economics
  • Index terms -economic dispatch
  • model predictive control
  • multi-agent optimization
  • Optimization
  • Predictive control
  • Production
  • Stochastic processes
  • stochastic time-varying network

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