中国电力2017，Vol.50Issue(10)：71-77,7.DOI:10.11930/j.issn.1004-9649.201702093
考虑多风电场功率相关性的概率潮流联合分布计算
Joint Distribution Calculation with Probabilistic Power Flow Considering Dependencies Among Multiple Wind Power Generations
摘要
Abstract
With large-scale wind power connected to power grid,wind generation fluctuation brings more uncertainties to power grid operation and seriously threatens power system static security.A joint distribution calculation method of probabilistic power flow considering dependencies among multiple wind power generations is proposed,which can be used to evaluate influence of wind generation on power system static security.Firstly,the Gaussian mixture model is used to characterize joint probability distribution of multiple wind power generations accurately.Then,based on excellent property of the Gaussian mixture model and approximate linear relationship between system state variables and wind power generations assumption,analytical expressions of joint probability distribution of system state variables are obtained.This method is applied to probability assessment of static security in Ningxia power grid.Compared with Monte Carlo simulation method,the proposed method has higher accuracy and faster computation speed.关键词
电力系统/风电/概率潮流计算/联合概率分布Key words
power system/wind power/probabilistic load flow calculation/joint probability distribution分类
信息技术与安全科学引用本文复制引用
田蓓,于珍,李旭涛,李宏强,沈沉..考虑多风电场功率相关性的概率潮流联合分布计算[J].中国电力,2017,50(10):71-77,7.基金项目
国网宁夏电力公司电力科学研究院资助项目(5229DK14000Z)This work is supported by Electric Power Research Institute of State Grid Ningxia Electric Power Company (No.5229DK14000Z). （5229DK14000Z）
