An Improved Stochastic Response Surface Method Based Probabilistic Load Flow for Studies on Correlated Wind Speeds in the AC/DC Grid

被引：5

作者：

Zhu, Ziwei ^{[1
]}

Lu, Shifan ^{[1
]}

Peng, Sui ^{[2
]}

机构：

[1] Nanchang Univ, Informat Engn Coll, Nanchang 330031, Jiangxi, Peoples R China

[2] Guangdong Power Grid Corp, Grid Planning & Res Ctr, CSG, Guangzhou 510080, Guangdong, Peoples R China

来源：

ENERGIES | 2018年 / 11卷 / 12期

基金：

中国国家自然科学基金;

关键词：

probabilistic load flow; AC; VSC-MTDC hybrid grids; stochastic response surface method; correlation; POWER-FLOW; PHOTOVOLTAIC GENERATION; SYSTEMS; IMPACT;

D O I：

10.3390/en11123501

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper proposed a probabilistic load flow technique of AC/VSC-MTDC (Alternate Current/Voltage Source Control-Multiple Terminal Direct Current) hybrid grids based on an improved stochastic response surface method. The applied traditional stochastic response surface method is inherent with the capability to tackle correlated normal variables; however, the accuracy is poor in the case of correlated diverse distributions. To address this issue, NATAF transformation was adopted to transform the correlated wind speeds and loads following arbitrary distributions into the variables that are subject to standard normal distributions. The collection points could be selected to establish the polynomial relationship among the independent standard normal variables and the output responses. Then, the probability distributions and statistics of the responses could be accurately and efficiently estimated. The modified IEEE 14-bus system, involving an additional VSC-MTDC system, wind speeds following various distributions, and diverse consumer behaviors, was used to demonstrate the validity and capability of the proposed method.

引用

页数：14