电测与仪表2024，Vol.61Issue(7)：109-115,7.DOI:10.19753/j.issn1001-1390.2024.07.016
考虑电源与负荷间存在非正定相关性的概率潮流计算方法研究
Research on probabilistic power flow calculation method considering non-positive definite correlation between power source and load
摘要
Abstract
With the emergence of new types of power system loads such as electric vehicles,the correlation between power sources and loads is becoming increasingly complex.Aiming at the problem that the probabilistic power flow calculations completed using Cholesky decomposition will be affected by the correlation matrix between power sys-tem power sources and power system loads,specifically,as the dimension of the correlation matrix increases,the correlation matrix becomes non-positive definite,ultimately leading to the inability to perform power flow calcula-tions.Therefore,this paper combines the modified Barzilai-Borwein gradient method with the Nataf transform to propose a novel semi-invariant method for handling non-positive definite correlation matrices.The impact of various power sources and new load correlations on the calculation results in the IEEE-33 node system is analyzed to verify the accuracy of the proposed method.关键词
相关性/非正定/概率潮流/电动汽车充电负荷/半不变量法Key words
correlation/non-positive definite/probabilistic power flow/electric vehicle charging load/semi-invari-ant method分类
信息技术与安全科学引用本文复制引用
曹宏宇,梁言贺,刘惠颖,王晓宇,殷鑫,陈月..考虑电源与负荷间存在非正定相关性的概率潮流计算方法研究[J].电测与仪表,2024,61(7):109-115,7.基金项目
国网黑龙江省电力有限公司项目(522472230004) （522472230004）
