计及风速非线性相关性的配电网可靠性评估模型

Reliability Evaluation Model of Distribution Power Grid Considering Nonlinear Correlation of Wind Speeds

为了能够准确评估风速、负荷之间的非线性相关性对配电网可靠性的影响,本文建立了计及风速非线性相关性的配电网可靠性评估模型。该模型采用秩相关性描述风速、负荷之间的相依结构,引入Copula函数对配电网中的含相关性的随机变量进行概率建模,并建立了基于分块算法的计及风速和负荷非线性相关性的配电网可靠性评估模型。

To accurately evaluate the influence of wind speed and non-linear correlation between loads on the reliability of distribution networks,a reliability assessment model considering the non-linear correlation of wind speed for distribution networks was established in this paper.The model used rank correlation to describe the correlation structure between wind speed and load.The Copula function was introduced to carry out probabilistic modeling of correlation random variables in distribution networks,and a nonlinear dependent distribution network reliability evaluation model based on block-based algorithm was established to account for wind speed and load.