Multi-Energy Simulation of a Smart Grid  with Optimal Local Demand and Supply Management

Christian Kuschel; Harald Köstler; Ulrich Rüde

doi:10.4236/sgre.2015.611025

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SGRE> Vol.6 No.11, November 2015

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Multi-Energy Simulation of a Smart Grid with Optimal Local Demand and Supply Management

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DOI: 10.4236/sgre.2015.611025 3,808 Downloads 4,526 Views Citations

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Christian Kuschel^*, Harald Köstler, Ulrich Rüde

Affiliation(s)

Friedrich-Alexander Universität Erlangen-Nürnberg Chair for System Simulation, Erlangen, Germany.

ABSTRACT

A simulation approach of a smart grid by cooperative bargaining is presented in this paper. Each participant of the smart grid determines its optimal schedule to meet its power and heating demand at minimal costs employing solar panels, fuel cells and batteries. This is done by solving a quadratic optimisation problem which takes the energy prices and the available devices into account. The energy prices are related to the demand and supply in the smart grid, so that a lower demand yields lower prices. The cooperative bargaining game is used to tune the participants’ optimal solution to obtain a Nash equilibrium. The computed solutions of the participants are validated against the capacities and structure of the smart grid by solving a multi-commodity flow problem. The presented model features multiple types of energy, so that they may be substituted to meet the participants’ demand. Furthermore, the participants may also act as supplier and not only as consumer, which allows decentralised generation of energy. The approach is validated in several experiments where effects like negative energy prices if generated energy exceeds the smart grid’s total demand and peak-shaving with even small-capacity batteries are exhibited.

KEYWORDS

Cooperative Bargaining, Pricing Model, Multi-Agent System, Multi-Commodity Flow, Smart Grid

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Kuschel, C. , Köstler, H. and Rüde, U. (2015) Multi-Energy Simulation of a Smart Grid with Optimal Local Demand and Supply Management. Smart Grid and Renewable Energy, 6, 303-315. doi: 10.4236/sgre.2015.611025.

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