Mitigation of multimodal subsynchronous resonance via controlled injection of supersynchronous and subsynchronous currents

Liang Wang, Xiaorong Xie, Qirong Jiang, Hemanshu R. Pota

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51 Citations (Scopus)

Abstract

This paper presents a novel approach to analyze the mechanism of torsional interaction (TI) and its solution for series-capacitor-compensated power systems. The relationship between the oscillation of the generator shaft and the consequent electromagnetic torque is deduced by a time-domain analysis. It is revealed that the subsynchronous currents caused by torsional oscillations provide negative damping electromagnetic torque and are the cause of TI. A family of subsynchronous dampers (SSDs) is proposed, which is based on the controlled injection of supersynchronous and subsynchronous damping currents into the generator stator. The design procedure of subsynchronous damping controller (SSDC) of series SSD is elaborated. Eigenvalue analysis and simulations for the IEEE first benchmark model (FBM) have verified the effectiveness of the proposed SSDs in solving the multimodal subsynchronous resonance problem.

Original languageEnglish
Article number6681914
Pages (from-to)1335-1344
Number of pages10
JournalIEEE Transactions on Power Systems
Volume29
Issue number3
DOIs
Publication statusPublished - May 2014
Externally publishedYes

Keywords

  • First benchmark model
  • series compensated power systems
  • subsynchronous damping controller (SSDC)
  • subsynchronous resonance (SSR)
  • torsional interaction (TI)

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Wang, L., Xie, X., Jiang, Q., & Pota, H. R. (2014). Mitigation of multimodal subsynchronous resonance via controlled injection of supersynchronous and subsynchronous currents. IEEE Transactions on Power Systems, 29(3), 1335-1344. Article 6681914. https://doi.org/10.1109/TPWRS.2013.2292597