考虑风电出力不确定性的发用电机组组合方法

由于风电出力的不确定性,大规模风电接入电网将对电力系统的安全经济运行产生严重的影响。为了更好地消纳风电,从发电和用电两个角度出发,根据风电出力的Beta概率密度函数,提出基于风电概率模型的弃风成本和可中断负荷成本的发用电一体优化方法。为提高该方法的求解效率和实用性,在建模中仅引入机组组合变量,并采用Delta方法将非线性模型转换为线性模型求解。最后采用多个场景算例说明了模型与方法的实用性和有效性。

An Integrated Generation-Consumption Unit Commitment Model Considering the Uncertainty of Wind Power

The uncertainty of wind power will have serious impacts on the safe and economic operation of power system when large-scale wind powers are integrated. In order to have a better consumption of wind power, according to Beta probability function of wind power, an optimization method is proposed based on the costs of abandoned wind powers and interruptible loads. To improve the efficiency of the method, only unit commitment variables are used, and the Delta method is introduced to convert the nonlinear model to linear model. Finally, a numerical example of multiple scenarios verifies the practicability and effectiveness of the method.