Jorge Cortés
Professor
Cymer Corporation Endowed Chair
Distributed coordination for economic dispatch with varying load and
generator commitment
A. Cherukuri, J. Cortés
Allerton Conference on Communications, Control, and Computing,
Monticello, Illinois, USA, 2014, pp. 475-482
Abstract
This paper considers the economic dispatch problem
for a group of power generating units. The
collective aim is to meet a power demand while
respecting individual generator constraints and
minimizing the total generation cost. Assuming that
the units communicate over a strongly connected,
weight-balanced digraph, we propose a distributed
coordination algorithm that provably converges to
the solution of the dispatch problem starting from
any initial power allocation. Additionally, we
establish that the proposed strategy is robust
against mismatch between load and total generation
(and thus able to handle time-varying loads), and
against intermittent generation commitment, a
plausible scenario due to the integration of
renewable energy sources into the grid. Our
technical approach uses notions and tools from
algebraic graph theory, nonsmooth analysis,
set-valued dynamical systems, and dynamic average
consensus. Several simulations illustrate our
results.
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Mechanical and Aerospace Engineering,
University of California, San Diego
9500 Gilman Dr,
La Jolla, California, 92093-0411
Ph: 1-858-822-7930
Fax: 1-858-822-3107
cortes at ucsd.edu
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