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This paper presents a study about the impact of different inverter interface controls on the steady-state stability of inverter-based distributed generators (DG) in the presence of positive feedback anti-islanding schemes. The impact of the constant power controller and the constant current controller on the DG system steady-state stability is compared. The Sandia frequency shift (SFS) anti-islanding...
This paper analyses the performance of the distributed generator frequency protection if the time required for islanding detection (this is the utility anti-islanding requirement) is increased. Such analysis considers synchronous generators and three types of frequency-based relays: vector surge, rate of change of frequency and under/over frequency relays. Moreover, the concept of performance curves...
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