Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Author: search.filters.author.Krishnan, G.Subject: search.filters.subject.Point of Common Coupling (PCC)

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    Intentional islanding operations of distributed generation systems with a load shedding algorithm
    (2012) Krishnan, G.; Gaonkar, D.N.
    Intentional islanding is a condition in which a distributed generation source continues to supply power to the local loads during a catastrophic utility failure. With a properly coordinated and sophisticated control scheme, islanding can be a possible solution, to ensure reliable power to the critical loads. This paper analyzes a control scheme for intentional islanding operation of an inverter based DG system. In grid connected mode, the interface control is designed to provide constant active and reactive power to the load. When grid is disconnected, an islanding detection algorithm will transfer the inverter into voltage control mode. The mismatch between load and generation is removed by implementing a load shedding algorithm. This paper also investigates the performance and the Non Detection Zones of the islanding detection scheme with different interface controllers. © 2012 IEEE.
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    Performance evaluation of a new hybrid islanding detection method for a wind based DG system
    (IEEE Computer Society, 2013) Krishnan, G.; Gaonkar, D.N.
    In this paper the performance of a new hybrid islanding detection method is studied considering a synchronous generator based wind power system. The proposed hybrid islanding detection algorithm combines an adaptive reactive power perturbation based active method with a novel passive algorithm. The passive algorithm considered in this study relies on some special transient response characteristics of the islanded system for providing an islanding suspicion signal. On receiving the suspicion signal the active counterpart injects minimum reactive power based on the resonant frequency to detect the islanding condition. The performance of the developed method is analyzed with various case studies conducted in MATLAB/SIMPOWERSYSTEMS environment. © 2013 IEEE.