电力系统自动化2018，Vol.42Issue(2)：64-69,6.DOI:10.7500/AEPS20170913002
计及断线的机组同调辨识方法
Identification Method for Coherent Generator Groups Considering Line Break
摘要
Abstract
When a power system is at the status of heavy load with line break causing the change of network structure,its power flow calculation is usually difficult to converge and it is hard to carry out the coherent generator identification based on slow coherency method due to the large condition number of Jacobian matrix.In order to improve this,a novel approach of generator coherency identification is proposed considering the line break.The basic processes of the method are as follows. Firstly,by describing the π-equivalent line model as a model with parameters,the event of branch line break is therefore expressed as the process of parameter variation.Then the novel method based on predictor-corrector continuation algorithm is further designed to compute the state matrix"s eigenvalues and their corresponding eigenvectors of the new network after the line break.Finally,the coherency indices between each pair generators and the coherent generator groups under the new network structure are acquired.The novel method proposed has good convergence property when the system is verified in the condition of heavy load and line break through the New England 10-unit 39-bus power system.关键词
机组同调辨识/慢同调理论/断线/延拓法Key words
generator coherency identification/slow coherency theory/line break/continuation method引用本文复制引用
胡世骏,罗萍萍,林济铿..计及断线的机组同调辨识方法[J].电力系统自动化,2018,42(2):64-69,6.基金项目
国家自然科学基金资助项目(5177107). This work is supported by National Natural Science Foundation of China(No.5177107). （5177107）
