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Identification of Power Swing in Wide Area Measurement System


Jinal Prajapati , Vadodara Institute of Engineering


Interconnected Power Systems, Power Swing, Phasor Measurement Unit, Protection Relays


This paper presents the feature of unit protection relays to protect large power transmission grids based on phasor measurement units. Current differential protection relays are widely applied to the protection of electrical plant due to their simplicity, sensitivity and stability for internal and external faults. The principle of the protection scheme depends on comparing positive sequence voltage magnitudes at each bus during fault conditions inside a system protection center to detect the nearest bus to the fault. Then the absolute differences of positive sequence current angles are compared for all lines connecting to this bus to detect the faulted line. The new technique depends on synchronized phasor measuring technology with high speed communication system and time transfer GPS system.

Other Details

Paper ID: IJSRDV6I30001
Published in: Volume : 6, Issue : 3
Publication Date: 01/06/2018
Page(s): 16-21

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