Test of Significance and Fiducial Limit of Voltage Stability Index for Indian 205 Bus System

Main Article Content

Madhvi Gupta
N. K. Sharma
A. K. Gupta


Voltage delivery stability is frequently used to analyze power delivery systems. Under stressed condition, these indices denote the flexibility of voltage stability condition and predict the voltage collapse phenomenon by weak area clustering. The prediction of voltage collapse is very important for the smooth operation of power system, so that situation of voltage collapse could be avoided. For small transmission system, these indices work satisfactorily. In the present work, a large transmission system equivalent to 205 bus Indian transmission system has been examined. The Fast Voltage Stability Index (FVSI) proposed has been applying to test the system under consideration. Various aspects of power delivery system for example voltage profile, maximum load-ability limit, weakest bus and the different weak area clustering have been examined. Although the FVSI values obtained in the test result are capable of identifying the weak buses of the system, yet they vary in a non-linear manner i.e. for increasing values of load, the FVSI values first increase and then decrease.

Transmission systems, maximum load-ability, voltage stability index, weak area clustering, congestion

Article Details

How to Cite
Gupta, M., Sharma, N. K., & Gupta, A. K. (2019). Test of Significance and Fiducial Limit of Voltage Stability Index for Indian 205 Bus System. Current Journal of Applied Science and Technology, 35(3), 1-14. https://doi.org/10.9734/cjast/2019/v35i330182
Original Research Article

Article Metrics


Omer H. Mehdi. Fast prediction of voltage stability index based on radial basis function neural network: Iraqi Super Grid Network, 400-kV. Modern Applied Science; 2011.

Balamourougan V, Sidhu TS, Sachdev MS. Techniques for online prediction of voltage collapse. IEEE Proceedings Generation, Transmission and Distribution. 2004;151(4): 453-460.

Musirin I, Rahman TKA. Novel Fast Voltage Stability Index (FVSI) for voltage stability analysis in power transmission system. Student Conference on Research and Development Proceedings, Shah Alam, Malasia; 2002.

Wartana I. Made, Jai Govind Singh, Weerakorn Ongsakul, Sasidharan Sreedharan. Optimal placement of FACTS controllers for maximising system loadability by PSO. International Journal of Power and Energy Conversion; 2013.

Madhvi Gupta, Vivek Kumar, Gopal Krishna Banerjee, Sharma NK. Mitigating congestion in a power system and role of FACTS devices. Advances in Electrical Engineering. 2017;7. Article ID: 4862428.
DOI: 10.1155/2017/4862428

Madhvi Gupta, Vivek Kumar, Subramani C, Banerjee GK, Sharma NK. Optimization by inspection method and its application to voltage stability. International Journal of Control Theory and Applications. ISSN: 0974-5572. International Science Press. 2017;10(16).

Reis C. Line indices for voltage stability assessment. IEEE Bucharest Power Tech, 06/2009; 2009.

Musirin I. Estimation of maximum loadability in power systems by using fast voltage stability index. International Journal of Power and Energy Systems; 2005.

Subramani C, Subhransu Sekhar Dash. Line stability index for steady state stability enhancement using FACTS device. International Review on Modelling and Simulation. 2011;4(6).

Chattopadhyay T, Banerjee S, Chanda C. A simple approach on voltage stability index of distribution systems for loads of different types. International Review of Electrical Engineering (IREE). 2014;9(5): 1002-1011.