基于概率输电介数的电网关键线路辨识  

Identification of Power Grid Critical Lines Based on Probabilistic Transmission Betweenness

作　　者：平倩钰 邹青宇[1] 王洪希[1] PING Qianyu;ZOU Qingyu;WANG Hongxi(College of Electrical and Information Engineering,Beihua University,Jilin 132021,China)

机构地区：[1]北华大学电气与信息工程学院,吉林吉林132021

出　　处：《北华大学学报（自然科学版）》2022年第5期674-679,共6页Journal of Beihua University（Natural Science）

基　　金：吉林省科技发展计划项目(YDZJ202101ZYTS170);吉林省教育厅科学技术研究项目(JJKH20220050KJ);吉林市科技创新发展计划项目(20210103098);中央引导地方科技发展资金吉林省基础研究专项(202002002JC).

摘　　要：现有的关键线路辨识方法大多基于确定运行状态.考虑随机波动负荷的影响,提出基于概率输电介数的辨识方法.以概率潮流为研究基础,考虑负荷不确定性建立了半不变量概率潮流模型;考虑电网拓扑结构和运行状态提出改进功率传输分布因子的改进输电介数,将两方面结合构成概率输电介数用于辨识电网关键线路.在MATPOWER环境下对IEEE30节点系统进行仿真验证、分析,仿真结果证明了本方法的合理性和优越性.Most of the existing critical line identification methods are based on the determined running mode.Considering the influence of random fluctuation load,an identification method based on probability transmission betweenness is proposed.Based on probabilistic power flow,a semi-invariant probabilistic power flow model is established by considering the uncertainty of load power.Considering the topological structure and running mode of the power grid,the improved transmission betweenness is proposed to improve the power transmission distribution factor.The probabilistic transmission betweenness is combined to identify the critical lines of power grid.The IEEE30 bus system is simulated and verified under MATPOWER and the results are analyzed.The simulation results prove the rationality and superiority of this method.

关 键 词：关键线路辨识 半不变量法 概率潮流 概率输电介数 

分 类 号：TM712[电气工程—电力系统及自动化]