Transient Analysis of Vehicle-to-Grid Systems Incorporating Plug-in Electric Vehicles

Vehicle-to-grid (V2G) systems are being considered as complementary sources for peak shaving and load levelling on traditional power grids. However, the harmonics and transients associated with this technology may threaten utility grid power quality, stability and equipment reliability. In this study, the transient behavior of a V2G system under varying grid and vehicle load conditions is examined using a test system. Bidirectional converter transient behavior is simulated to predict the relationship between V2G load variations and associated transients. Potential applications of this test system include the prediction of grid conditions that could lead to equipment failure, and the design and evaluation of equipment protection for V2G systems.