Assessment of Secured Voltage Stability Power Margin of Indian Southern Power Grid Using Integrated and Intelligent Methods

Krishna, P. Gopi; Manohar, T. Gowri
July 2012
International Journal on Recent Trends in Engineering & Technolo;Jul2012, Vol. 7 Issue 2, p43
Academic Journal
This paper proposes an innovative approach for the assessment of secured voltage stability power margin of Indian southern power grid system, which uses 5 methods known as Repeated Power Flow ( RPF), Continuation Power Flow (CPF), L-index, Radial Basis Function Neural Network (RBFNN) and Back Propagation Neural Network (BPNN). These methods are integrated in right manner through a proposed algorithm, so that they can assess together secured voltage stability power margin. As this plays a vital role in any power system, the proposed method has been tested with the conventional methods and intelligent techniques, which gives an appropriate secured voltage stability power margin from time to time in all circumstances, for the different stations. The results are satisfactory and are obtained on old 24-bus and latest 72-bus Indian southern power grid. The obtained result by the proposed method is useful to maintain reliable power in any power system and its monitoring in an on-line environment of deregulated power system apart from the existing methods of usage of conventional and intelligent techniques in the analysis of secured voltage stability power margin.


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