Distributed Convex Optimization for Electric Vehicle Aggregators

One of the main challenges for electric vehicle (EV) aggregators is the definition of a control infrastructure that scales to large EV numbers. This paper proposes a new optimization framework for achieving computational scalability based on the alternating directions method of multipliers, which al...

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Bibliographic Details
Published in:IEEE transactions on smart grid Vol. 8; no. 4; pp. 1852 - 1863
Main Authors: Rivera, Jose, Goebel, Christoph, Jacobsen, Hans-Arno
Format: Journal Article
Language:English
Published: Piscataway IEEE 01.07.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
ADMM
Benchmark testing
Charging
Computational geometry
Convex functions
Convexity
Cost function
distributed computing
Distributing
Electric power distribution
Electric vehicles
Jacobian matrices
Multipliers
Optimization
Scalability
smart grid
Versatility
ISSN:1949-3053, 1949-3061
Online Access:Get full text
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Summary:One of the main challenges for electric vehicle (EV) aggregators is the definition of a control infrastructure that scales to large EV numbers. This paper proposes a new optimization framework for achieving computational scalability based on the alternating directions method of multipliers, which allows for distributing the optimization process across several servers/cores. We demonstrate the performance and versatility of our framework by applying it to two relevant aggregator objectives: 1) valley filling; and 2) cost-minimal charging with grid capacity constraints. Our results show that the solving time of our approach scales linearly with the number of controlled EVs and outperforms the centralized optimization benchmark as the fleet size becomes larger.
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ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2015.2509030