Impact of Electric Vehicle Charging Station on System Stability with Integration of Wind Farm

Abstract

This paper analyzes the impact of the stochastic behavior of the Electric Vehicle (EV) battery charging station on system stability. This paper examines the newly added EV power load on small-signal and transient stability, which is a major concern and significant issue. The small-signal stability is studied based on eigenvalue analysis. The transient stability is analyzed by using a large disturbance that is a three-phase fault. The stability analysis is carried out with step by step penetration of the EV battery charging station, which results in more oscillations and weekly oscillatory mode. The stability significantly reduces due to an increase in EV power load. The stability is improved with Wind Farm (WF) because the characteristics of wind and EV battery charging stations are the same. With the integration of the WF, the overall inertia of the machine is reduced and the system stability is improved. System stability is observed by considering the two-area test system.