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电动汽车的大量接入将给电网的稳定运行带来危害,通过充电价格的调整可以合理引导电动汽车的充电行为,减小电动汽车负荷对电网的影响。基于价值函数推导出自弹性系数和互弹性系数的计算公式,在考虑对用户的引导程度不同和电网负荷波动的情况下提出了2种分时电价方案,并建立了电动汽车充电的分时电价引导模型。对比分析2种不同方案下的最优分时电价,结果表明实行分时电价可以对电动汽车用户的充电行为进行有效引导,并且峰谷电价差增大,更有利于平抑电网的负荷波动,提高用户充电的经济性
A large number of access to electric vehicles will bring harm to the stable operation of the power grid. By adjusting the charging price, it is reasonable to guide the charging behavior of the electric vehicle and reduce the impact of the electric vehicle load on the power grid. Based on the value function, the formula for calculating the coefficient of elasticity and the coefficient of mutual elasticity is deduced. Two kinds of time-of-use electricity price solutions are proposed considering the degree of guidance to the users and the load fluctuation of the power grid, and the time- model. The optimal time-of-use price under two different scenarios is compared and analyzed. The results show that the time-sharing electricity price can effectively guide the charging behavior of electric vehicle users and the difference between peak and valley price increases, which is more conducive to stabilizing the load fluctuation of the power grid and improving User charging economy