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Title: Droop Assignment Algorithm for the Inertial Control of a DFIG-Based Wind Power Plant for Supporting the Grid Frequency

Authors:
; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
National Research Foundation of Korea (NRF)
Contributing Org.:
Chonbuk National University, Jeonju, Korea; Technical University of Denmark, Denmark
OSTI Identifier:
1215329
Report Number(s):
NREL/CP-5D00-64527
DOE Contract Number:
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: 2014 IEEE Symposium Power Electronics and Machines for Wind and Water Applications (PEMWA), 24-26 July 2014, Milwaukee, Wisconsin
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 24 POWER TRANSMISSION AND DISTRIBUTION; DFIG-Based Wind Power Plant; Frequency control; Frequency locked loops; Kinetic energy; Rotors; Shadow mapping; Wind power generation; Wind speed

Citation Formats

Lee, Jinsik, Kang, Yong Cheol, Muljadi, Eduard, and Sorensen, Poul. Droop Assignment Algorithm for the Inertial Control of a DFIG-Based Wind Power Plant for Supporting the Grid Frequency. United States: N. p., 2014. Web. doi:10.1109/PEMWA.2014.6912223.
Lee, Jinsik, Kang, Yong Cheol, Muljadi, Eduard, & Sorensen, Poul. Droop Assignment Algorithm for the Inertial Control of a DFIG-Based Wind Power Plant for Supporting the Grid Frequency. United States. doi:10.1109/PEMWA.2014.6912223.
Lee, Jinsik, Kang, Yong Cheol, Muljadi, Eduard, and Sorensen, Poul. Thu . "Droop Assignment Algorithm for the Inertial Control of a DFIG-Based Wind Power Plant for Supporting the Grid Frequency". United States. doi:10.1109/PEMWA.2014.6912223.
@article{osti_1215329,
title = {Droop Assignment Algorithm for the Inertial Control of a DFIG-Based Wind Power Plant for Supporting the Grid Frequency},
author = {Lee, Jinsik and Kang, Yong Cheol and Muljadi, Eduard and Sorensen, Poul},
abstractNote = {},
doi = {10.1109/PEMWA.2014.6912223},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jul 24 00:00:00 EDT 2014},
month = {Thu Jul 24 00:00:00 EDT 2014}
}

Conference:
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  • This paper proposes an adaptive hierarchical voltage control scheme of a doubly-fed induction generator (DFIG)-based wind power plant (WPP) that can secure more reserve of reactive power (Q) in the WPP against a grid fault. To achieve this, each DFIG controller employs an adaptive reactive power to voltage (Q-V) characteristic. The proposed adaptive Q-V characteristic is temporally modified depending on the available Q capability of a DFIG; it is dependent on the distance from a DFIG to the point of common coupling (PCC). The proposed characteristic secures more Q reserve in the WPP than the fixed one. Furthermore, it allowsmore » DFIGs to promptly inject up to the Q limit, thereby improving the PCC voltage support. To avert an overvoltage after the fault clearance, washout filters are implemented in the WPP and DFIG controllers; they can prevent a surplus Q injection after the fault clearance by eliminating the accumulated values in the proportional-integral controllers of both controllers during the fault. Test results demonstrate that the scheme can improve the voltage support capability during the fault and suppress transient overvoltage after the fault clearance under scenarios of various system and fault conditions; therefore, it helps ensure grid resilience by supporting the voltage stability.« less
  • The frequency regulation capability of a wind power plant plays an important role in enhancing frequency reliability especially in an isolated power system with high wind power penetration levels. A comparison of two types of inertial control methods, namely frequency-based inertial control (FBIC) and stepwise inertial control (SIC), is presented in this paper. Comprehensive case studies are carried out to reveal features of the different inertial control methods, simulated in a modified Western System Coordination Council (WSCC) nine-bus power grid using real-time digital simulator (RTDS) platform. The simulation results provide an insight into the inertial control methods under various scenarios.
  • As wind energy becomes a larger portion of the world's energy portfolio and wind turbines become larger and more expensive, wind turbine control systems play an ever more prominent role in the design and deployment of wind turbines. The goals of traditional wind turbine control systems are maximizing energy production while protecting the wind turbine components. As more wind generation is installed there is an increasing interest in wind turbines actively controlling their power output in order to meet power setpoints and to participate in frequency regulation for the utility grid. This capability will be beneficial for grid operators, asmore » it seems possible that wind turbines can be more effective at providing some of these services than traditional power plants. Furthermore, establishing an ancillary market for such regulation can be beneficial for wind plant owner/operators and manufacturers that provide such services. In this tutorial paper we provide an overview of basic wind turbine control systems and highlight recent industry trends and research in wind turbine control systems for grid integration and frequency stability.« less