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

Journal article (2021)

Authors

W. Ananduta

Carlos Ocampo-Martinez Universitat Politecnica de Catalunya

Angelia Nedic Arizona State University

DOI: https://doi.org/10.1109/TSTE.2021.3073510

Optimization Economics Model predictive control Acceleration Stochastic processes Production Predictive control Communication networks Multi-agent optimization Index terms -economic dispatch Stochastic time-varying network

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Published Date

2021

Language

English

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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.

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