Improved Sequence Network Model of Wind Turbine Generators for Short-Circuit Studies

Howard D. F.; Habetler T. G.; Harley R. G.

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Improved Sequence Network Model of Wind Turbine Generators for Short-Circuit Studies

机译：Improved Sequence Network Model of Wind Turbine Generators for Short-Circuit Studies

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摘要

Protective relay settings for wind turbine generators often depend on short-circuit calculations performed using sequence network circuits in rms-based protection software. Traditional assumptions made in deriving the sequence network representation of induction machines result in some error in short-circuit calculations, which could potentially cause incorrect relay settings. A more accurate sequence network model of induction machines is derived in this paper to aid in short-circuit calculations in induction-generator-based wind plants. A rigorous mathematical approach to defining the stator short-circuit current equations under general faults is described and validated with transient simulations. The sequence network model of the induction machine is derived from the closed-form mathematical solutions. An example short-circuit calculation is performed on a simple network in this paper, and found to have a marked improvement in accuracy from traditional sequence network calculation methods for unbalanced faults. Resonant effects of power factor correction capacitors are also described.

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《IEEE Transactions on Energy Conversion》 |2012年第4期|968-977|共10页
作者
Howard D. F.; Habetler T. G.; Harley R. G.;
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作者单位

School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA, USA;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类电工技术;
关键词
AC machines; induction motors; power system dynamics; power system faults; power system protection; relays; short-circuit currents; wind energy; wind farms; wind power generation;

Improved Sequence Network Model of Wind Turbine Generators for Short-Circuit Studies

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