Improving Frequency Stability of Islanded Microgrid Using Virtual Inertia Control on Energy Storage Systems and Renewable Energy Sources

Document Type : Original Article

Authors

1 Department of Electrical Engineering, Tafresh University, Tafresh, 39518-79611, Iran

2 Department of Electrical Engineering, Bu-Ali Sina University, Hamedan, 65167-38695, Iran

Abstract
The frequency stability is a crucial aspect of an islanded microgrid, especially considering the presence of RES with low inertia. These RES, such as wind turbines and photovoltaic systems, pose a potential threat to the frequency stability of the microgrid. To address this challenge, the concept of VIC has been introduced in islanded microgrids. This paper investigates the application of VIC not only to the ESS but also to the WT and PVS. The proposed method aims to enhance the frequency stability of the microgrid. The results of this study compare the performance of the proposed method, which includes VIC for PVS, WT, and ESS, with other scenarios. These scenarios include The VIC for PVS and ESS, VIC for ESS only, and a method without VIC. The simulation results, obtained using MATLAB software, demonstrate that the proposed method significantly improves the frequency stability of the microgrid under load disturbances and disturbances originating from RES. Moreover, the proposed method exhibits robustness in the face of uncertainties associated with microgrid parameters.

Highlights

  • Presenting a method to improve the frequency stability of microgrids.
  • Implementation of synchronous generator behavior on photovoltaic and wind turbine.
  • The robustness of the proposed method against disturbances on the microgrid.
  • The robustness of the proposed method against the uncertainty related to microgrid parameters.

Keywords

Subjects

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Volume 1, Issue 1
Winter 2025
Pages 37-44

  • Receive Date 18 August 2024
  • Revise Date 31 August 2024
  • Accept Date 17 September 2024
  • First Publish Date 24 September 2024