Novel coordinated control strategy of bess and pmsg-wtg for fast frequency response

Hyunwook Kim, Junghun Lee, Jaehyeong Lee, Gilsoo Jang

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


An increase in inverter-based resources (IBRs) can lower the inertia of a power system, which may adversely affect the power system by causing changes such as a frequency nadir reduction or an increased initial rate of change of frequency (RoCoF). To prevent this, an ancillary service called fast frequency response (FFR) helps the inertia response by using IBRs. The main resources used in FFR are variable-speed wind turbine generators (VSWTGs) or energy storage systems (ESSs), which can respond quickly through converter control. The control is applied to the frequency regulation service faster than the primary frequency response, so the second frequency nadir may fall below the first frequency nadir. This study proposed a novel coordinated control strategy to efficiently utilize energy to improve the frequency nadir through coordinated control of wind turbines based on permanent magnetic synchronous generators (PMSGs) and battery energy storage systems (BESSs). The simulation results confirmed that the two-bus test system was composed of PSCAD/EMTDC, and the frequency nadir increased by utilizing the same amount of energy as in traditional control systems.

Original languageEnglish
Article number3874
JournalApplied Sciences (Switzerland)
Issue number9
Publication statusPublished - 2021

Bibliographical note

Funding Information:
Funding: This research was supported by the Korea Institution of Energy Technology Evaluation and Planning (KETEP) under grant (20183010025440).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


  • Battery energy storage system (BESS)
  • Coordinated control strategy
  • Fast frequency response (FFR)
  • Frequency nadir
  • Permanent magnetic synchronous generator (PMSG)

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes


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