Salani, Matteo and Giusti, Alessandro and Di Caro, Gianni and Rizzoli, Andrea Emilio and Gambardella, Luca Maria (2013) Lexicographic multi-objective optimization for the unit commitment problem and economic dispatch in a microgrid. In: Innovative Smart Grid Technologies (ISGT Europe) UNSPECIFIED.
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Abstract
In this paper, we present a multi-objective approach for the optimal control of dispatchable loads and bi-directional energy storages in a microgrid, commonly referred as the unit commitment problem and economic dispatch problem. We consider two different and possibly conflicting objectives: the minimization of the end user energy bill price and the maximization of the system stability as a function of the overall system’s load.We propose a lexicographic ordering of the objectives so that the end user’s energy cost is considered as the primary objective and the system’s stability is the secondary objective. In order to evaluate the performances, we provide a comprehensive micro-simulation environment used to study different demand response (DR) price profiles. The proposed multi-objective approach mitigates the network instability effects introduced by static DR programs with high price volatility. We conclude that almost flat DR price profiles with higher rates during high-peak periods should be preferred instead of high volatile profiles. With flat DR price profiles, both the end user and the utility company can benefit from smart-control algorithms adopting a lexicographic multi-objective optimization scheme
Item Type: | Article in conference proceedings or Presentation at a conference (Paper) |
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Uncontrolled Keywords: | smart grids, decentralised management |
Subjects: | Engineering > Electronic & electrical engineering > Electrical engineering Engineering > Electronic & electrical engineering > Control systems |
Department/unit: | Dipartimento tecnologie innovative > Istituto Dalle Molle di studi sull’intelligenza artificiale USI-SUPSI |
Depositing User: | Andrea Emilio Rizzoli |
Date Deposited: | 27 Feb 2014 13:56 |
Last Modified: | 27 Feb 2014 13:56 |
URI: | http://repository.supsi.ch/id/eprint/3799 |
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