• R.Karthikeyanq

Voltage instability problems are given more significant importance in power system planning and operation stages of modern power system networks to avoid voltage collapse which may end up in partial or full system black out. The power system operators always need to know not only the severity of the disturbance but also the mechanism that might lead to the voltage instability. A knowledge of the above helps the operators in deciding the necessary control actions to be taken to avoid system blackout. In this paper, a comparative study based on Singular Value Decomposition (SVD) techniques and Modal analysis has been conducted to identify the weakest bus in the power system that may contribute to the voltage instability .A Matlab program has been developed to carry out the SVD and Modal Analysis. A typical IEEE 14 – test bus power system is used to validate these techniques, and the weak bus is identified and the test results are presented and discussed.

Voltage stability, Singular Value Decomposition (SVD), Modal Analysis.

"A COMPARATIVE STUDY OF SINGULAR VALUE DECOMPOSITION AND MODAL ANALYSIS METHODS IN ASSESSING VOLTAGE STABILITY OF A POWER SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.279-283, June-2019, Available :http://www.jetir.org/papers/JETIR1906L42.pdf

"A COMPARATIVE STUDY OF SINGULAR VALUE DECOMPOSITION AND MODAL ANALYSIS METHODS IN ASSESSING VOLTAGE STABILITY OF A POWER SYSTEM", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp279-283, June-2019, Available at : http://www.jetir.org/papers/JETIR1906L42.pdf