电力系统自动化2016，Vol.40Issue(12)：37-44,8.DOI:10.7500/AEPS20160311009
输配协同的配电网态势快速感知方法
Fast Situation Awareness Method for Distribution Network Coordinated with Transmission Grid
摘要
Abstract
The flexible and diversified trend of development of the intelligent distribution network is making the interaction between the transmission and distribution network increasingly appreciable,hence higher requirements are put forward on the situation awareness of distribution network.To improve the situation awareness ability,a fast situation awareness method for distribution network coordinated with transmission grid is proposed.Firstly,the state of transmission network for estimating distribution network load variation is calculated.Secondly,the Thevenin equivalent method is employed and the equivalent parameters of transmission grid from the root node of distribution network are identified.Finally,the transmission grid is connected to the distribution network to become aware of the situation of the distribution network for load variation.There is no need of repeated information exchange between transmission and distribution network with the proposed method compared with the iteration method.On the basis of the proposed method,the traj ectory of the static voltage stability margin index of distribution network can be predicted through multi-step-ahead states forecast,and then the static voltage security situation can be estimated based on this traj ectory.The simulation results show its feasibility and effectiveness.关键词
输配协同/戴维南等值/态势感知/静态电压安全Key words
integrated transmission and distribution/Thevenin equivalent/situation awareness/static voltage security引用本文复制引用
丰颖,贠志皓,孙景文,周琼..输配协同的配电网态势快速感知方法[J].电力系统自动化,2016,40(12):37-44,8.基金项目
国家自然科学基金资助项目(51177091) （51177091）
国家电网公司科技项目。@@@@This work is supported by National Natural Science Foundation of China(No.51177091)and State Grid Corporation of China （No.51177091）
