利用成本-时间曲线进行分时电价最优时段划分

分时电价是实现电力需求侧管理的一项重要举措。提出一种新的按照成本-时间曲线划分时段的方法,即将成本函数曲线与负荷曲线拟合,得到一条反映电网公司成本随时间变换关系的曲线。在用三角形隶属度函数进行时段划分时,将产生多组划分方案。为寻求最佳方案,基于边际成本理论建立了考虑电价弹性系数的分时电价模型,并以电网公司利润最大化为目标寻求最优的时段划分方案。通过算例进行数据仿真,结果证明了该方法的合理性,为电网公司制定分时电价提供理论依据。

Optimal time parition of TOU price based on cost-time curve

TOU price is an important measure for DSM. This paper presents a new partition method based on cost-time function curve.The cost-time funtion curve is integrated by cost function curve and load curve,reflecting the relationship between cost and time. Many groups of period partition would be gotten by using the triangle subject function. To seek for the optimal program, this paper establishes the TOU tariff structure considering price elasticity based on marginal cost principle,and gains the optimal partition method aiming at maximum benefit of grid corporation. Its feasibility is testified through numerical simulation. This theory can be used for grid corporation to establish TOU price.