Enhancing Virtual Inertia Control in Microgrids: A Novel Frequency Response Model Based on Storage Systems
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Published:2024-01-03
Issue:1
Volume:10
Page:18
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ISSN:2313-0105
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Container-title:Batteries
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language:en
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Short-container-title:Batteries
Author:
Criollo Adrián12ORCID, Minchala-Avila Luis I.1ORCID, Benavides Dario23ORCID, Arévalo Paul3ORCID, Tostado-Véliz Marcos3ORCID, Sánchez-Lozano Daniel3ORCID, Jurado Francisco3ORCID
Affiliation:
1. Department of Electrical Engineering, Electronics, and Telecommunications (DEET), Universidad de Cuenca, Cuenca 010101, Ecuador 2. Department of Electrical Maintenance and Industrial Control, Instituto Superior Tecnológico del Azuay, Cuenca 010105, Ecuador 3. Department of Electrical Engineering, University of Jaén, 23700 Linares, Spain
Abstract
The integration of renewable resources in isolated systems can produce instability in the electrical grid due to its intermintency. In today’s microgrids, which lack synchronous generation, physical inertia is substituted for inertia emulation. To date, the most effective approach remains the frequency derivative control technique. Nevertheless, within this method, the ability to provide virtual drooping is often disregarded in its design, potentially leading to inadequate development in systems featuring high renewable penetration and low damping. To address this issue, this paper introduces an innovative design and analysis of virtual inertia control to simultaneously mimic droop and inertia characteristics in microgrids. The dynamic frequency response without and with renewable energy sources penetration is comparatively analyzed by simulation. The proposed virtual inertia control employs a derivative technique to measure the rate of change of frequency slope during inertia emulation. Sensitivity mapping is conducted to scrutinize its impact on dynamic frequency response. Finally, the physical battery storage system of the University of Cuenca microgrid is used as a case study under operating conditions.
Subject
Electrical and Electronic Engineering,Electrochemistry,Energy Engineering and Power Technology
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