Synchrophasor Based Oscillation Detection: A Case Study for Indian Power Grid

Synchrophasor Based Oscillation Detection: A Case Study for Indian Power Grid
Authors : Vaishali Rampurkar
Publication Date: 03-04-2015


Author(s):  Vaishali Rampurkar

Published in:   International Journal of Engineering Research & Technology

License:  This work is licensed under a Creative Commons Attribution 4.0 International License.

Website: www.ijert.org

Volume/Issue:   Vol. 4 - Issue 04 (April - 2015)

e-ISSN:   2278-0181

 DOI:  http://dx.doi.org/10.17577/IJERTV4IS040029


The Indian electrical grid is one of the largest & complex networks in the world. Such complex system is subjected to stress or disturbances which manifest in the form of low frequency oscillations. Monitoring of these oscillations is necessary as they can disrupt the system if they are sustained for a longer period of time with significant magnitude. This paper presents the analysis of low frequency oscillation modes using the data from Phasor measurement unit located in Western and northern region of the country. It reports case studies of disturbances that occurred in the Indian power grid. The modes with low frequency oscillations were observed in both Western& northern region of the Indian grid.The Matrix Pencil technique was used to identify the oscillatory modes in system during the occurrence of the event. The importance of identifying critical oscillatory modes to improve the power system operation, has been brought out in this paper.


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