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Title: A passive islanding detection technique with reduced complexity for distributed generations
Authors: Mishra P.P.
Bhende C.N.
Keywords: Distributed generations (DGs)
islanding detection scheme
passive method
symmetrical components
voltage unbalance
Issue Date: 2018
Citation: 2
Abstract: Modern power electronic devices offer a reliable and economical solution for better management and control of electric power in the distribution system. However, the nonlinear operational characteristics of these devices may contaminate the voltage and current waveforms at the point of common coupling (PCC). Moreover, unbalanced load is a common phenomenon in the distribution network. Under such scenarios, the conventional islanding detection schemes may not give proper detection accuracy or may take long time to detect the islanding event. In this paper, sequence component based passive islanding detection scheme is developed for inverter based distributed generation under unbalanced and nonlinear loading conditions. The objective behind the detection technique is that the anti-islanding relay should not trip for non-severe and normally occurring disturbances such as power quality problems, variation of grid frequency. The proposed detection algorithm is tested on 13-bus standard distribution system as well as on balanced and linear load condition. It is found that the proposed scheme works effectively and enables fast islanding detection irrespective of the loading scenario. The proposed technique has reduced complexity and hence it is simpler to implement in the power system for anti-islanding protection. � 2017 IEEE.
Appears in Collections:Research Publications

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