Lessons Learned

Fault Current Contributions from Wind Plants

Quantifying the short-circuit contribution of wind-turbine generators has become an important issue for utility protection engineers because of the unconventional response of modern wind-turbine generators to short-circuit faults. The prevalent use of power electronics in modern wind turbines results in a control-based response to faults. This is a distinctive difference from conventional synchronous generators that produce a natural, physics-based response to faults. Because of this distinctive difference in wind-turbine generator dynamics from conventional generation, the established tools and methods for quantifying short-circuit currents may not apply to wind-turbine generators.    This article is a brief extract from a report produced by a joint working group representing members from the Transmission & Distribution Committee, Electric Machinery Committee and the Power System Relaying Committee of the IEEE Power and Energy Society. It focuses on the select topic regarding the particular fault characteristics of common wind-turbine generators installed today. More

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