Development and field experiments of a generator terminal subsynchronous damper

Xiaorong Xie, Liang Wang, Xijiu Guo, Qirong Jiang, Quan Liu, Yonglin Zhao

Research output: Contribution to journalArticlepeer-review

52 Citations (Scopus)

Abstract

This paper presents a novel controlling device, named generator terminal subsynchronous damper (GTSSD), to mitigate subsynchronous resonance (SSR) in the power system. The proposed GTSSD consists of a multimodal complementary current calculator (MCCC) and a complementary current generator (CCG). The CCG is composed of a current tracking controller and a power-electronic converter. The rotor speed deviation of the generator is fed back to the MCCC to calculate the current references of the CCG. The outputs of CCG consist of both sub-and supersynchronous complementary current, part of which flows into the generator and creates damping torque on the rotor. The relationship between the control parameters of the GTSSD and the resultant damping improvement is derived. A 10-MVA GTSSD prototype has been developed and tested in an actual series-compensated power system. The experimental results fully demonstrate its ability to enhance torsional damping and to depress subsynchronous oscillation, proving that the GTSSD provides a new and effective approach to solve SSR problems.

Original languageEnglish
Article number6527910
Pages (from-to)1693-1701
Number of pages9
JournalIEEE Transactions on Power Electronics
Volume29
Issue number4
DOIs
Publication statusPublished - 2014
Externally publishedYes

Keywords

  • Complex torque coefficient method
  • generator terminal subsynchronous damper (GTSSD)
  • series-compensated power system
  • subsynchronous resonance (SSR)

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Xie, X., Wang, L., Guo, X., Jiang, Q., Liu, Q., & Zhao, Y. (2014). Development and field experiments of a generator terminal subsynchronous damper. IEEE Transactions on Power Electronics, 29(4), 1693-1701. Article 6527910. https://doi.org/10.1109/TPEL.2013.2267550