Energy management systems for a network of electrified cranes with energy storage

William Holderbaum, Feras Alasali, Stephen Haben

Research output: Contribution to journalArticle

Abstract

An Energy Storage System (ESS) is a potential solution to increase the energy efficiency of low voltage distribution networks whilst reinforcing the power system. In this article, energy management systems have been developed for the control of an ESS connected to a network of electrified Rubber Tyre Gantry (RTG) cranes. Considering the highly volatile crane demand behaviour and uncertainty in the RTG crane demand prediction as a nonlinear optimisation problem, this paper presents and verifies an optimal energy control strategy based on a Stochastic Model Predictive Control (SMPC) algorithm. The SMPC controller aims to improve the reliability and economic performance of a network of RTG cranes, under a given ESS and network specification. A specific case, using different ESS locations, is presented and the results of the proposed SMPC and MPC control models are compared to a set-point controller using data collected from an instrumented electrified RTG cranes at the Port of Felixstowe, UK. The results indicate that the SMPC controller successfully reduce electrical energy costs, the peak demand and outperforms each of the presented control techniques.
Original languageEnglish
Pages (from-to)210-222
Number of pages13
JournalInternational Journal of Electrical Power & Energy Systems
Volume106
Early online date9 Oct 2018
DOIs
Publication statusPublished - 1 Mar 2019

Keywords

  • Cost saving potentials
  • Energy forecast
  • Energy storage
  • RTG crane
  • Stochastic model predictive control

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