Active Islanding Detection Techniques of Anti-Islanding for Grid-Connected Distributed Generation: Part 1
Keywords:
Islanding Detection,, Distributed Generation,, Grid-ConnectedAbstract
This paper presents an overview of the active islanding detection techniques of anti-islanding for grid-connected distributed generation: part 1, they include Impedance Measurement, Harmonic injection/detection of impedance, Sliding Mode Frequency Shift (SMS), Active Frequency Drift (AFD), Frequency Jump (FJ), Sandia Frequency Shift (SFS), Sandia Voltage Shift (SVS), Mains Monitoring Units with allocated All-Pole Switching Devices connected in Series, Variation of Active Power and Reactive Power and General Electric Frequency Schemes (GEFS). Active detection techniques have NDZ less than passive detection techniques but they have weakness. They be inject signal into power system network every time for check apparent islanding condition. The signal perturbs voltage, frequency and various parameter of power system network. Perturbation in the system degrading the power quantity and the system stability. For application example presents in part 2.
References
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