Role of V2G at Smart Grid Technology

A variety of renewable energy resources are penetrating more into the power grid, in accordance with the efforts to reduce CO2 emission and reduce the dependence on fossil fuels for energy generation. Almost more than 60% of the world’s oil productions are consumed by vehicles on roads. Gas driven internal combustion engines are low efficiency systems that emit several harmful gases and establish an unsustainable and inefficient transportation system. In a study, it is reported that vehicles are responsible for 30% of the world total energy consumptions and 27% of total greenhouse gas emissions. Hence, to eliminate emissions originated from urban life, grid-connected vehicles have been recognized as one of the effective options. In fact, electric vehicles (EVs) reduce CO2 and NOx emissions and increase energy efficiency through using distributed generations (DGs) in the transportation sector. In this paper two case are considered ,first without utility grid connected V2G system and secondly with utility grid connected and with & without V2G what will be the impact of frequency on grid and along with that we have observed the results with different kinds of energy vehicles i.e. their performance and reliability and it is observed that, with V2G the frequency of the grid improved whenever the load demands the supply, also the use of different charging system how impacts the performance of EV. Hence stability of V2G system by using utility grid gets improved which makes it more efficient than other renewable sources of energy.