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Overview of Anti-Islanding Algorithms for PV Systems. Part I: Passive Methods

2006; Linguagem: Inglês

10.1109/epepemc.2006.4778679

F. Mango, Marco Liserre, A.D. Aquila, Alberto Pigazo,

Power Systems Fault Detection

This paper offers an overview of the passive methods used for islanding detection. A monitoring PLL has been adopted for the estimation of the voltage amplitude and frequency. Passive inverter resident methods discussed are the over/under voltage (OUV), over/under frequency (OUF), the voltage harmonic monitoring (with a study on the effects of the grid impedance value and of the inverter dc voltage ripple) and the phase monitoring (different from the classical phase jump method). A harmonic synchronization PLL is used to monitor the 3 rd , 5 th and 7 th harmonics. All the proposed algorithms are validated by simulations and experimental results obtained in accordance with the IEEE Std. 929-2000 procedure.