Voltage and Frequency Stability Analysis of Transmission Power Grids with EV Charging Stations
For power grid operators, this study highlights the need to consider transmission-level stability impacts of EV charging stations, but it is incremental as it applies existing stability analysis methods to a specific load type.
This paper analyzes voltage and frequency stability of transmission power grids with EV charging stations, finding that high-load EV stations cause more stability issues than other loads, as demonstrated on IEEE-9 and IEEE-39 bus systems.
The large-scale Electric Vehicle (EV) integration into the electricity grid has initiated significant challenges to grid stability issues due to dynamic loadability events. Although electric vehicle impacts on distribution systems are well studied, transmission-level investigations remain limited. In this research paper, case scenarios of EV load models as charging stations have been considered for stability analysis (Voltage and Frequency Stability) to address EV operation on the transmission grid. It is also noted that the operation of EV stations due to their high loadability causes more stability complexities to the grid compared to other loads in a power network. Simulations have been conducted on two different power networks of the IEEE-9 and IEEE-39 bus test systems, respectively.