Peak-valley time-of-use electricity price optimization method for electric vehicle charging and discharging and energy storage system scheduling

The invention discloses a peak-valley time-of-use electricity price optimization method for electric vehicle charging and discharging and energy storage system scheduling, and the method comprises the steps: 1, building a power grid model, which comprises the steps: building a user load model, building an electric private car and electric bus model, building an energy storage system model, and building a generator set model; 2, carrying out power demand constraint on the user load model; 3, carrying out electric quantity constraint and charging and discharging power constraint on the electric private car and electric bus model, and carrying out ordered charging and discharging by adopting V2G under the condition that the charging requirement is met; 4, establishing a life constraint of the energy storage system model; 5, establishing a unit income constraint of the generator set model; and 6, calculating the minimum operation and maintenance cost through constraint of energy balance and income of the power gr