摘要
建立考虑风电时间相关性的多面体不确定性模型,提出一种新的鲁棒机组组合模型。首先,利用椭圆生成思想来表示风电的时间相关性,得到相关性轴线和中心点,以此建立风电时间相关性约束方程。然后,将相关性方程引入多面体不确定性一般方程之中,形成风电时间相关性多面体不确定模型。在此基础上,建立基于风电时间相关性多面体不确定性的鲁棒机组组合模型,同时采用C&CG算法解决考虑风电时间相关性的多面体不确定性鲁棒机组组合问题,并解决双线性问题。最后,针对IEEE 118节点系统进行仿真实验,验证了所提鲁棒机组组合方法的有效性。
The enlargement of wind plants in power system brings great challenges to the unit commitment.Polyhedron uncertainties of robust optimization is a common method to deal with the randomness of wind power in the unit commitment.However,the traditional polyhedron uncertainty modeling does not consider the temporal dependence of wind power,which is conservative.And it is difficult to meet the requirements of economic requirement.So this paper makes full use of the wind time correlation to re-establish the polyhedron uncertainty model and apply it to unit commitment.Firstly,the correlation of the random variables is represented by the idea of ellipse,the correlation line and the center point are obtained,and the temporal correlation constraint equation is established by them.Then,the correlation equation is added to the general equation of the polyhedron uncertainty,and the modeling of the related polyhedron is completed.Finally,IEEE 118 node systems are simulated to get the good results.
作者
袁爽
何银国
戴朝华
姜天
侯怡爽
肖帅
Yuan Shuang;He Yinguo;Dai Chaohua;Jiang Tian;Hou Yishuang;Xiao Shuai(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,China;Electric Power Research Institute of Hunan Electric Power Company of State Grid,Changsha 410004,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第9期293-301,共9页
Acta Energiae Solaris Sinica
关键词
风电
时间相关性
鲁棒优化
机组组合
wind
temporal correlation
robust optimization
unit commitment
