A Novel Island Detection Methodology for the Realization of Smart Grid

Hammad Khan, Anastasia Tjandra, Herbert Iu, Victor Sreeram

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DOI: 10.4236/sgre.2011.24038                

Abstract

Responding to the problem of increased load demand, progress has been made to develop a new smarter infrastructure, which employs a decentralised approach. This smart decentralised system, termed smart grid, is composed of micro grids which utilise a combination of distributed energy resources (DER). The DERs can either be operated in parallel with the grid or in autonomous condition (intentional-islanding). Operating the DER under intentional islanding condition is seen as the next stage in smart grid’s future development which requires intelligent control implementation. In order to utilise this intelligent control, immediate detection of islanding is essential. This paper proposes a new smarter islanding detection method, which implements the forecast capability of smart grid by detecting the fluctuations before islanding occurs. The proposed method has been tested in simulation and compared against the current islanding detection methods. The simulation results have successfully proven the benefits of the new proposed method over the current methodologies in island detection.

Keywords

Distributed Generation (DG), Islanding, Non-Detection Zone (NDZ), Circuit Breaker, Contact Parting Time

Conflicts of Interest

The authors declare no conflicts of interest.

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