Co-Optimization of Distribution Transformer Aging and Energy Arbitrage Using Electric Vehicles

The advent of electric vehicles (EVs) will bring forth increases in power transmitted over longer periods of time through the distribution power grid. Such an effect will result in accelerated loss-of-life of distribution grid assets including pole-top transformers. As preventive and corrective meas...

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Bibliographic Details
Published in:IEEE transactions on smart grid 2017-11, Vol.8 (6), p.2712-2722
Main Authors: Sarker, Mushfiqur R., Olsen, Daniel Julius, Ortega-Vazquez, Miguel A.
Format: Article
Language:English
Subjects:
aggregator
Aging
Arbitrage
Charging
Electric power distribution
Electric vehicles
Energy consumption
Energy distribution
Load modeling
Loading
Mathematical model
Oil insulation
Optimization
Power transformer insulation
Temperature
transformer
Transformers
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Summary:The advent of electric vehicles (EVs) will bring forth increases in power transmitted over longer periods of time through the distribution power grid. Such an effect will result in accelerated loss-of-life of distribution grid assets including pole-top transformers. As preventive and corrective measures, the charging of the set of EVs connected to a particular pole-top transformer can be centrally managed (e.g., by a distribution system operator or independent aggregator). This paper proposes a centralized model to co-optimize the transformer loss-of-life with the benefits for EVs' owners on charging/discharging management. The proposed model is compared against a decentralized optimization model in which EVs' owners optimize their benefits, while ignoring the effect on the transformer. Results show the benefit of the centralized strategy in maintaining the grid assets, while modestly reducing consumers' arbitrage benefits.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2016.2535354