Abstract
The rapid development of the economy has made the scarcity of traditional fossil energy increasingly prominent. At the same time, with the proposal of the beautiful China strategy, electric vehicles have become an important choice for people to travel. Different charging and discharging modes of electric vehicles have different impacts on the power grid load production. Reasonably controlling the impact of electric vehicle charging and discharging loads on the power grid, narrowing the peak-to-valley difference, and ensuring the reliability of grid operation have become urgent issues to be resolved. This paper selects electric private cars and electric buses that have a large effect on the power grid load as the research object, and uses qualitative and quantitative research methods to extract the main influencing factors of electric vehicle charge and discharge. A charge and discharge daily load calculation model for electric vehicles under three modes of disorderly charging, one-way ordered charging and bidirectional ordered charging and discharging was constructed, and a typical Tianjin electric vehicle charging behavior research sample was selected. Monte Carlo method was used to predict the daily load of Tianjin electric vehicles under three charging and discharging modes, and the results were analyzed and discussed, and the corresponding management inspiration was given.
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