A Cyber Attack Mitigation Scheme for Series Compensated DFIG-Based Wind Parks

Mohsen Ghafouri, Ulas Karaagac, Amir Ameli, Jun Yan, Chadi Assi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

16 Citations (Scopus)

Abstract

Subsynchronous Interaction (SSI) phenomenon is known to be one of the most frequent and severe stability issues of a Wind Park (WP), and can potentially lead to a significant loss of power generation. The broad impacts of this phenomenon on a power grid have made WPs interesting targets for cyber attacks. To initiate the SSI, an adversary can target either the power grid (external attacks) or the cyber system of WPs (internal attacks). This paper proposes a mitigation scheme for attacks that initiate the SSI phenomenon in series compensated doubly-fed induction generator (DFIG)-based WPs. External attacks are addressed by employing a robust static-output-feedback Subsynchronous Damping Controller (SSDC), which is designed based on the insensitive strip region and Linear Matrix Inequality (LMI) techniques. Internal attacks, however, are detected by comparing the estimated and measured converters' currents. Once the compromised measurements are detected, the designed SSDC is restructured to mitigate the attacks. The effectiveness of the proposed method is demonstrated using detailed Electromagnetic Transient (EMT) simulations for both internal and external cyber attacks. Additionally, the performance of the proposed method is corroborated using a real-time co-simulation framework.

Original languageEnglish
Pages (from-to)5221-5232
Number of pages12
JournalIEEE Transactions on Smart Grid
Volume12
Issue number6
DOIs
Publication statusPublished - 1 Nov 2021

Keywords

  • Cyber-attacks
  • doubly-fed induction generator (DFIG)
  • insensitive design region
  • series capacitor compensation
  • subsynchronous interaction (SSI)
  • wind park

ASJC Scopus subject areas

  • General Computer Science

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