Dynamic Capabilities of an Energy Storage-Embedded DFIG System

Vahan Gevorgian, Anderson Hoke, Jinho Kim, Eduard Muljadi

Research output: Contribution to journalArticlepeer-review

48 Scopus Citations

Abstract

Power electronic-based wind turbine generators (WTGs) are capable of providing inertial response to the grid by releasing kinetic energy from the turbine blade; thus, as conventional power plants are retired, the reduction of online inertia can be compensated by designing frequency controls for the WTGs. Deployment of energy storage technology for renewable generations has been increased to have the renewables centralized with a system operator as an independent power supply by making up for their nature of generation. In addition, the cost of energy storage has dropped over time and global research activities on energy storage have been funded by private industries and governments. This paper investigates the opportunity of deploying an energy storage on a doubly fed induction generator (DFIG)-based WTG to respond to the system frequency, and then explores dynamic capabilities of the energy storage-embedded DFIG to boost its contribution while the frequency response is being provided by the power system's online inertia; thus, enabling an effective delivery of ancillary services to the system. To do this, the dynamic models of DFIG and energy storage are combined and simulated under the different operating conditions of a DFIG, such as subsynchronous, synchronous, and supersynchronous operations, using the PSCAD.

Original languageAmerican English
Article number8666806
Pages (from-to)4124-4134
Number of pages11
JournalIEEE Transactions on Industry Applications
Volume55
Issue number4
DOIs
StatePublished - 1 Jul 2019

Bibliographical note

Publisher Copyright:
© 1972-2012 IEEE.

NREL Publication Number

  • NREL/JA-5D00-74488

Keywords

  • Doubly fed induction generator (DFIG)
  • energy storage
  • frequency response
  • inertial response
  • renewable power plant

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