A New Passive Islanding Detection Method for Distributed Generations Using Time-Frequency Transform-Based EMD-HT

محورهای موضوعی : Communication

Abbas Doroozi ¹ , Javad Olamaei ²

1 - Electrical Engineering Department, South Tehran Branch, Islamic Azad University, Tehran, Iran
2 - Electrical Engineering Department, South Tehran Branch, Islamic Azad University, Tehran, Iran

تاریخ دریافت : 1396/08/22 تاریخ پذیرش : 1396/08/22 تاریخ انتشار : 1396/09/10

کلید واژه:

چکیده مقاله :

This paper presents a new method based on empirical mode decomposition and Hilbert transform for detecting islanding from non-islanding events in distributed generations. In this paper, the empirical mode decomposition is used to separate out intrinsic mode functions (IMF) from non-stationary power signal disturbance waveforms. Then, the Hilbert transform applied on all the IMFs to extract the instantaneous amplitude and frequency components. The required index is extracted from the energy spectrum density of the signals that introduced as U1, U2, and U3 and we can detect islanding events with high accuracy, low cost and high speed in distributed generations.