V2G study for electric grid reinforcement in a commercial feeder in Mexico City

Abstract

Rapid growth of energy demand all over the world has compelled researchers to explore new ways to inject power to the grid. The connection of Electric Vehicles (EVs) may provide bidirectional flow of power between vehicle and grid. The Vehicle-to-Grid (V2G) energy flow can aid to improve grid efficiency, as well as other relevant parameters and reliability. V2G energy transfer offers an attractive economic opportunity for EV owners, and it might help in reducing grid operation costs in the urban feeders where the demand is constrained and peak-electricity prices are high. Other benefits include voltage regulation, reduction of power losses, peak load shaving, voltage profile improvement, etc. In this work, the V2G concept explores power losses relief and voltage profile improvement in a commercial feeder with nominal load values in Mexico City. From the scenarios considered, this work found that the V2G strategy is successful in improving the parameters provided the power injection does not exceed the hosting capacity of the feeder. Therefore, the V2G technology is useful in stabilizing the network in commercial zones where the load is considerably high at peak hours, especially in Mexico City.