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Title: Stable Short-Term Frequency Support Using Adaptive Gains for a DFIG-Based Wind Power Plant

Journal Article · · IEEE Transactions on Energy Conversion
 [1];  [2];  [3];  [4];  [4];  [1]
  1. Chonbuk National University, Jeonju (Korea, Republic of)
  2. Korea University, Seoul, (Korea, Republic of)
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
  4. Aalborg University (Denmark)

For the fixed-gain inertial control of wind power plants (WPPs), a large gain setting provides a large contribution to supporting system frequency control, but it may cause over-deceleration for a wind turbine generator that has a small amount of kinetic energy (KE). Further, if the wind speed decreases during inertial control, even a small gain may cause over-deceleration. Here this paper proposes a stable inertial control scheme using adaptive gains for a doubly fed induction generator (DFIG)-based WPP. The scheme aims to improve the frequency nadir (FN) while ensuring stable operation of all DFIGs, particularly when the wind speed decreases during inertial control. In this scheme, adaptive gains are set to be proportional to the KE stored in DFIGs, which is spatially and temporally dependent. To improve the FN, upon detecting an event, large gains are set to be proportional to the KE of DFIGs; to ensure stable operation, the gains decrease with the declining KE. The simulation results demonstrate that the scheme improves the FN while ensuring stable operation of all DFIGs in various wind and system conditions. Further, it prevents over-deceleration even when the wind speed decreases during inertial control.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); Ministry of Science, ICT, and future Planning (MSIP)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1319283
Report Number(s):
NREL/JA-5D00-65833
Journal Information:
IEEE Transactions on Energy Conversion, Vol. 31, Issue 3; ISSN 0885-8969
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 80 works
Citation information provided by
Web of Science

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Frequency support from doubly fed induction generator wind turbines journal January 2007
Kinetic Energy of Wind-Turbine Generators for System Frequency Support journal February 2009
Dynamic Models for Steam and Hydro Turbines in Power System Studies journal November 1973

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