采用分段离散化和高斯混合模型的多场景概率潮流计算

被引:26
作者
叶林 [1 ]
张亚丽 [1 ]
李强 [2 ]
宋旭日 [2 ]
巨云涛 [1 ]
饶日晟 [1 ]
机构
[1] 中国农业大学信息与电气工程学院
[2] 中国电力科学研究院
关键词
有向功率; 分段离散化; 高斯混合模型; 多场景; 概率潮流;
D O I
暂无
中图分类号
TM744 [电力系统的计算];
学科分类号
080802 [电力系统及其自动化];
摘要
针对电网运行中风电和负荷的不确定性,提出了一种采用风电场输出功率分段离散化和负荷高斯混合模型的多场景概率潮流计算方法。在风电场有向功率特性曲线的基础上,分段离散化处理风电场输出功率,构造风电场输出功率多场景。同时,建立负荷的高斯混合模型,构造负荷功率多场景。然后,确定系统注入功率多场景及其对应的概率,在系统注入功率的每个场景中,风电节点输出功率为定值,负荷节点功率均服从高斯分布。最后,应用全概率公式,将系统注入功率的每个场景中计算所得状态变量的概率分布以该场景对应的概率作为权重,整合计算得到最终的概率潮流结果。以改进的IEEE 57节点系统进行仿真分析,结果表明所提方法简化了概率潮流求解过程,提高了计算效率。
引用
收藏
页码:131 / 137
页数:7
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