An Ising Spin-Based Model to Explore Efficient Flexibility in Distributed Power Systems

This paper analyses customers’ demand flexibility in a local power trading scenario through an Ising spin-based model. We look at quantitative information on the two-way relationships between power exchanges and spin dynamics. To this end, a modified version of the Metropolis-Hastings algorithm was...

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Bibliographic Details
Main Authors: Shokri Gazafroudi, Amin, Prieto, Javier, Corchado, Juan Manuel, Prieto Castrillo, Francisco
Other Authors: Massachusetts Institute of Technology. Media Laboratory
Format: Article
Language:English
Published: Hindawi Publishing Corporation 2018
Online Access:http://hdl.handle.net/1721.1/115354
Description
Summary:This paper analyses customers’ demand flexibility in a local power trading scenario through an Ising spin-based model. We look at quantitative information on the two-way relationships between power exchanges and spin dynamics. To this end, a modified version of the Metropolis-Hastings algorithm was implemented, including a gradient descent through the constraint surface. This allowed us to analyse the system on a large scale (considering the cumulated benefit of all the actors involved) and also from the perspective of total aggregation. In a maximum flexibility scenario, the total aggregation profit increases with the number of aggregators. We also investigate numerically the effect of aggregator boundaries on the spin dynamics.