intelligent and cost-effective protection schemes for improved reliability of large-scale wind farms
abstract
recently, wind power has become a reliable and cost-effective renewable energy source of
electricity due to the foreseeable exhaustion of fossil fuel-based power generations and its growing
adverse effects on the environment as it is the main source of greenhouse gases. doubly fed
induction generator (dfig) based wind farm gets the popularity due to its ability for variable speed
operation, reactive power control, and reduced converter ratings. traditional protection schemes
result in huge protection failure during fault and abnormality incidents for wind farms since wind
turbine fault analysis behavior is different from conventional synchronous generators. thus, the
simple conventional settings for relays would result in maloperation and miscoordination between
relays for wind farms and hence, the existing wind farms protection schemes need to be
significantly improved.