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Voltage Deviation Analysis of an Existing Wind Farm Using High Fidelity Real Time Digital Simulations
Dr. Siddharth Suryanarayanan
Wednesday, April 11, 2007
1:30PM ~ 3:30PM, Harris Center 125
Abstract
Interconnecting wind farms to the electricity grid provides several advantages such as capacity deferrals and reduced green house gases (GHG) emissions. However, the interconnected operation of fixed-speed induction generators (FSIG) based wind farms may pose a particular challenge of reactive power compensation to achieve proper voltage control. Several standards and recommended practices exist for interconnecting and operating wind farms. However, real-life experience may demonstrate severe operating conditions, which require special measures to achieve proper voltage control. This talk will describe the case study of a 50 MW wind farm with FSIGs connected to the 69 kV distribution system of the Bonneville Power Administration (BPA) network, a federally owned utility in the northwest United States, that exhibited such voltage regulation problems over an extended period of time. Accordingly, this site was identified as a potential candidate location to install and field test a prototype of a novel STATCOM (power electronic device), rated at 10 MVA, for dynamic voltage control. High-fidelity modeling and simulation methods to quantify the performance of the controller for the novel STATCOM revealed the actual source for the voltage deviation in the wind farm. In addition, the high-fidelity modeling effort may also potentially provide an opportunity for adequate sizing of the novel STATCOM. Future work includes characterization of controller performance of the novel STATCOM through controller-hardware-in-the-loop efforts.
Short Bio
Siddharth (Sid) Suryanarayanan received the Ph.D. in electrical engineering from Arizona State University in May 2004. In 2004-2005, Sid was employed as a postdoctoral research faculty in the department of electrical engineering at Arizona State University. Since March 2005, he has been with the Center for Advanced Power Systems in Florida State University, where he leads the power systems group in research activities on power quality management of the next-gen all-electric ship (DDG 1000) for the US Office of Naval Research and on interconnection of distributed/renewable energy sources for the US Department of Energy. Sid's research experience also includes power system state estimation, modeling and analysis of the world's largest Dynamic Voltage Restorer (DVR) installation, and statistical quantification of power system vulnerabilities.
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