Effect of Large Scale Electric Vehicle Loading on the Hopf Bifurcation Point in a Two Area System with and without Power System Stabilizer

International Journal of Electrical and Electronics Engineering

© 2025 by SSRG - IJEEE Journal

Volume 12 Issue 1

Year of Publication : 2025

Authors : Ghousul Azam Shaik, Lakshmi Devi Aithepalli

10.14445/23488379/IJEEE-V12I1P120

How to Cite?

Ghousul Azam Shaik, Lakshmi Devi Aithepalli, "Effect of Large Scale Electric Vehicle Loading on the Hopf Bifurcation Point in a Two Area System with and without Power System Stabilizer," SSRG International Journal of Electrical and Electronics Engineering, vol. 12,  no. 1, pp. 203-210, 2025. Crossref, https://doi.org/10.14445/23488379/IJEEE-V12I1P120

Abstract:

This manuscript deals with the identification of the Hopf bifurcation point in a two-area system by the application of increased Electric vehicle load demand as a variable parameter. By considering a linearized static load model for electric vehicle load, a two-axis model for generator, and a quasi-steady state model for network expressed in power balance form, eigenvalue analysis was carried out with and without Power System Stabilizer (PSS). By taking eight cases and two scenarios in the Kundur two-area system, the sketching of the locus of inter-area mode was scripted in MATLAB 2020 environment to see the loading at which this value becomes purely imaginary. It can be inferred that the inclusion of PSS not only increased the damping of inter-area mode but also put off the Hopf bifurcation point till higher loading when compared to the base case of the first scenario. The eigenvalue analysis programme was repeated by taking a single line contingency as a second scenario, and the Hopf bifurcation point was sketched corresponding to the new base case and by accommodating newly tuned PSS, the efficacy of the same in putting off the dynamic stability limit till higher loading was proved by Hopf bifurcation analysis.

Keywords:

Electric vehicle, Hopf bifurcation, Linearization, Load modelling, Small signal stability.

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