A Framework for Assessing the Reliability of Wind Energy Conversion Systems
Smater, Sebastian S.
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https://hdl.handle.net/2142/14638
Description
Title
A Framework for Assessing the Reliability of Wind Energy Conversion Systems
Author(s)
Smater, Sebastian S.
Issue Date
2010-01-06T16:20:15Z
Director of Research (if dissertation) or Advisor (if thesis)
Domínguez-García, Alejandro D.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Reliability
Wind Power
Wind energy conversion systems (WECS)
Faults
Transient Stability
Low voltage ride-through (LVRT)
Abstract
During the last decade, wind power generation has seen rapid development. According to the U.S. Department of Energy, achieving 20\% wind power penetration in the U.S. by 2030 will require: (i) enhancement of the transmission infrastructure, (ii) improvement of reliability and operability of wind systems and (iii) increased U.S. manufacturing capacity of wind generation equipment. This research will concentrate on improvement of reliability and operability of wind energy conversion systems (WECSs).
The increased penetration of wind energy into the grid imposes new operating conditions on power systems. This change requires development of an adequate reliability framework. This thesis proposes a framework for assessing WECS reliability in the face of external disturbances, e.g., grid faults and internal component faults. The framework is illustrated using a detailed model of type C WECS - doubly fed induction generator with corresponding deterministic and random variables in a simplified grid model. Fault parameters and performance requirements essential to reliability measurements are included in the simulation. The proposed framework allows a quantitative analysis of WECS designs; analysis of WECS control schemes, e.g., fault ride-through mechanisms; discovery of key parameters that influence overall WECS reliability; and computation of WECS reliability with respect to different grid codes/performance requirements.
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