Impact of Synchronous Condenser on Sub/Super-Synchronous Oscillations in Wind Farms

Yuzhi Wang, Liang Wang*, Qirong Jiang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Sub/Super-synchronous oscillations have occurred in wind farms consisting of doubly-fed induction generators (DFIGs) or permanent magnet synchronous generators (PMSGs). This paper investigates the impact of synchronous condenser (SC) on sub/super-synchronous oscillations in wind farms with different types of generator and compares it with STATCOM. Impedance model is adopted in this paper to explain the mechanism of oscillations in wind farms and its mitigation using SC. Compared to STATCOM, SC is more effective in oscillation mitigations of the two types of wind farms. Eigenvalue analysis and time domain simulations in PSCAD/EMTDC are used to check the influence on sub/super-synchronous oscillations from different parameters of SC, such as its capacity, leakage reactance and inertia constant. The results indicate that SC would improve the system stability while a larger capacity will induce a greater improvement. A smaller leakage reactance of SC also benefits the mitigation of oscillations while its inertia constant can hardly influence system stability.

Original languageEnglish
Article number9178447
Pages (from-to)2075-2084
Number of pages10
JournalIEEE Transactions on Power Delivery
Volume36
Issue number4
DOIs
Publication statusPublished - Aug 2021

Keywords

  • Synchronous condenser
  • doubly-fed induction generator
  • permanent magnet synchronous generator
  • static synchronous compensator
  • sub/super-synchronous oscillation

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Wang, Y., Wang, L., & Jiang, Q. (2021). Impact of Synchronous Condenser on Sub/Super-Synchronous Oscillations in Wind Farms. IEEE Transactions on Power Delivery, 36(4), 2075-2084. Article 9178447. https://doi.org/10.1109/TPWRD.2020.3019481