Mobility-Aware Vehicle-to-Grid Control Algorithm in Microgrids

Haneul Ko, Sangheon Pack, Victor C.M. Leung

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

In a vehicle-to-grid (V2G) system, electric vehicles (EVs) can be efficiently used as power consumers and suppliers to achieve microgrid (MG) autonomy. Since EVs can act as energy transporters among different regions (i.e., MGs), it is an important issue to decide where and when EVs are charged or discharged to achieve the optimal performance in a V2G system. In this paper, we propose a mobility-aware V2G control algorithm (MACA) that considers the mobility of EVs, states of charge of EVs, and the estimated/actual demands of MGs and then determines charging and discharging schedules for EVs. To optimize the performance of MACA, the Markov decision process problem is formulated and the optimal policy on charging and discharging is obtained by a value iteration algorithm. Since the mobility of EVs and the estimated/actual demand profiles of MGs may not be easily obtained, a reinforcement learning approach is also introduced. Evaluation results demonstrate that MACA with the optimal and learning-based policies can effectively achieve MG autonomy and provide higher satisfaction on the charging.

Original languageEnglish
JournalIEEE Transactions on Intelligent Transportation Systems
DOIs
Publication statusAccepted/In press - 2018 Apr 10

Keywords

  • Batteries
  • electric vehicle (EV)
  • Markov decision process (MDP)
  • Markov processes
  • Mathematical model
  • microgrid
  • Microgrids
  • reinforcement learning (RL)
  • State of charge
  • Vehicle-to-grid
  • Vehicle-to-grid (V2G)

ASJC Scopus subject areas

  • Automotive Engineering
  • Mechanical Engineering
  • Computer Science Applications

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