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The increasing growth of doubly-fed induction generators (DFIG) in wind farms requires attention to understanding its short-circuit behaviour in order to meet grid code requirements. The DFIG model has been well known for years, but many application uncertainties still persist and their impact on short-circuit calculation has to be fully understood. This paper attempts to clarify the influence of...
Wind energy currently constitutes about 8% of the total energy generation in New Zealand. The penetration of wind generation into high voltage transmission systems necessitates development of grid integration standards. One of the requirements is the development of a voltage envelope as part of a generator Fault Ride-Through (FRT) criteria. The specialized development of FRT criteria for a country...
This paper presents coherency based analysis technique for network reduction to carry out transient stability analysis for a power system that has some wind penetration. Identification of coherent groups targets to obtain simplified dynamic equivalent of system by aggregation of coherent generators using an equivalent generator. Equivalent model can transform a large power system into a reduced model,...
Increased penetration of wind generation into high voltage transmission systems necessitates development of grid integration standards. One of them is Fault Ride-Through (FRT) or Low Voltage Ride-Through (LVRT) guidelines. Development of the voltage envelope depends on the transmission network characteristics along with considerations like contingency and protective relay settings. This paper outlines...
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