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Estimation of cost savings from participation of electric vehicles in vehicle to grid(V2G)schemes

Journal of Modern Power Systems and Clean Energy 2015年第2期3卷 249-258页

作者： Mahdi KIAEE Andrew CRUDEN Suleiman SHARKH Energy Technology Research Group Engineering SciencesUniversity of Southampton Highfield CampusSouthampton SO171BJUK

The storage capacity of the batteries in an electric vehicle(EV)could be utilised to store electrical energy and give it back to the grid when needed by participating in vehicle to grid(V2G)*** participation could be a source of revenue for vehicle owners thus reducing the total charging cost of their EVs.A V2G simulator has been developed using MATLAB to find out the potential cost saving from participation of EVs in V2G schemes.A standard IEEE30 network has been modelled in the simulator which uses the MATPOWER engine to undertake power flow analysis.A novel control algorithm has been developed to take advantage of the difference between the selling and buying electricity prices by charging and discharging EVs at the appropriate *** scenarios are simulated to compare the total charging cost of EVs with or without the utilisation of V2G technology within the power system assuming a total of 5000 *** results of the simulation show that the applied control strategy with V2G is able to reduce the charging cost of EVs by 13.6%while satisfying the minimum requirement for state of charge(SoC)of the EV batteries to complete their next journey.

关键词： Electric vehicles Cost saving Electricity price vehicle to grid

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The effect of electric vehicle energy storage on the transition to renewable energy

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Green Energy and Intelligent Transportation 2023年第1期2卷 16-25页

作者： Efstathios E.Michaelides Viet N.D.Nguyen Dimitrios N.Michaelides Department of Engineering TCUFort WorthTX76132USA University Wisconsin-Madison MadisonWIUSA

The most viable path to alleviate the Global Climate Change is the substitution of fossil fuel power plants for electricity generation with renewable energy *** substitution requires the development of very large energy storage capacity,with the inherent thermodynamic irreversibility of the storage-recovery ***,the world experiences a significant growth in the numbers of electric vehicles with large batteries.A fleet of electric vehicles is equivalent to an efficient storage capacity system to supplement the energy storage system of the electricity *** based on the hourly demand-supply data of ERCOT,a very large electricity grid,show that a fleet of electric vehicles cannot provide all the needed capacity and the remaining capacity must be met by *** though the storage capacity of the batteries is close to 1–2%of the needed storage capacity of the grid,the superior round-trip storage efficiency of batteries reduces the energy dissipation associated with the storage and recovery processes by up to 38%and the total hydrogen storage capacity by up to 50%.The study also shows that anticipated improvements in the round-trip efficiencies of batteries are almost three times more effective than improvements in hydrogen storage systems.

关键词： Fossil fuel substitution Decarbonization Electric vehicles Energy storage vehicle to grid Batteries

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