An islanded microgrid energy management controller validated by using Hardware-In-the-Loop Emulators

Petreus, Dorin and Etz, Radu and Patarau, Toma and Cirstea, Marcian (2019) An islanded microgrid energy management controller validated by using Hardware-In-the-Loop Emulators. International Journal of Electrical Power and Energy Systems, 106. pp. 346-357. ISSN 0142-0615

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Official URL: http://dx.doi.org/doi.org/10.1016/j.ijepes.2018.10...

Abstract

A novel microgrid emulator used to test multiple microgrid configurations and energy management control strategies is presented. The system includes Hardware-In-the-Loop (HIL) emulators for geothermal and biogas energy sources. It also includes actual photovoltaic energy together with a lead acid battery bank for storage and it is controlled by a two level control system. The control system consists of a primary level voltage-reactive power and frequency-active power and a secondary level energy management algorithm based on the balance between the power produced by the renewable energy generators, state of charge of the battery bank and the loads. The energy management control strategy is based on cycle-charging the batteries at a reference value in order to efficiently use the available resources. The primary energy source is considered the geothermal energy, while the most cost effective one is the photovoltaic energy. A buffer zone is kept in the battery bank in order to store as much energy produced by the photovoltaic system as possible. The presented microgrid, used for testing the energy management strategies, employs emulators for the geothermal and biogas generators; however, the results are relevant and can be scaled for a real-life microgrid.

Item Type: Journal Article
Keywords: microgrid, power management, renewable energies, two level control, cycle charge control
Faculty: Faculty of Science & Technology
Depositing User: Prof. Marcian Cirstea
Date Deposited: 03 Dec 2018 11:33
Last Modified: 03 Dec 2018 11:33
URI: http://arro.anglia.ac.uk/id/eprint/703916

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