含风电场电力系统旋转备用获取模型  

Spinning Reserve Model in the Wind Power Integrated Power System

作　　者：葛炬[1] 王飞[1] 张粒子[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市102206

出　　处：《电力系统自动化》2010年第6期32-36,共5页Automation of Electric Power Systems

摘　　要：为反映风电对电力系统备用容量获取的不确定性影响,以含风电场电力系统为研究对象,建立了风电出力偏差的概率密度函数,基于机会约束规划方法构建了考虑负荷预测误差、风电出力偏差以及发电机组的故障停运等不确定随机因素的旋转备用获取模型。该模型通过设定旋转备用被满足的概率大于给定的置信度水平的约束条件,反映了旋转备用充裕水平对系统经济性的影响。算例分析表明,在满足系统可靠性的前提下,文中模型的经济性优于传统模型,同时,风电出力偏差采用文中建立的概率分布较之正态分布的可靠性更佳,通过置信度水平的合理选取,所建模型可以实现可靠性与经济性的平衡。In order to consider the uncertain influences of wind power on the power system reserves, this paper introduces a probability density function of the wind power forecast error and a mathematical model of spinning reserve based on the chanceconstrained programming. The uncertain and stochastic factors, like the load and wind forecast errors, the fault outage of generators are considered, by setting a constraint condition that the probability of the spinning reserve satisfied is larger than the given confidence level, the model reflects the influence of abundance level of spinning reserve on the economy of system. The analysis shows that under the premise of system reliability, the economy of this model is better than that of traditional models, and the reliability is higher when the wind power forecast error obeys the probability distribution. At the same time, the model can realize the balance between the reliability and economy of system by selecting reasonable confidence levels.

关 键 词：旋转备用 风电场 机会约束规划 电力市场 

分 类 号：TM743[电气工程—电力系统及自动化]