Investigation of the Effects of Various Types of Wind Turbine Generators on Power-System Stability
Publication: Journal of Energy Engineering
Volume 141, Issue 3
Abstract
It has become more and more demanding to investigate the impacts of wind farms on power system operation as ever-increasing penetration levels of wind power have the potential to bring about a series of dynamic stability problems for power systems. This paper undertakes such an investigation through investigating the small signal and transient stabilities of power systems that are separately integrated with three types of wind turbine generators (WTGs), namely the squirrel cage induction generator (SCIG), the doubly fed induction generator (DFIG), and the permanent magnet generator (PMG). To examine the effects of these WTGs on a power system with regard to its stability under different operating conditions, a selected synchronous generator (SG) of the well-known Western Electricity Coordinating Council (WECC three-unit nine-bus system and an eight-unit 24-bus system is replaced in turn by each type of WTG with the same capacity. The performances of the power system in response to the disturbances are then systematically compared. Specifically, the following comparisons are undertaken: (1) performances of the power system before and after the integration of the WTGs; and (2) performances of the power system and the associated consequences when the SCIG, DFIG, or PMG are separately connected to the system. These stability case studies utilize both eigenvalue analysis and dynamic time-domain simulation methods.
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Acknowledgments
The authors gratefully acknowledge the research funding provided by National Key Technology Research and Development Program (2011BAA07B02) and a discovery project of Australia Research Council (DP120101345).
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Published In
Journal of Energy Engineering
Volume 141 • Issue 3 • September 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Apr 29, 2013
Accepted: Nov 18, 2013
Published online: Feb 20, 2014
Discussion open until: Jul 20, 2014
Published in print: Sep 1, 2015
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