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《Automation of Electric Power Systems》 2008-01
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A Simple Method to Determine Power System Delay Margin

DONG Cun1,2, YU Xiaodan2, JIA Hongjie2(1. Jilin Electric Power Company, Changchun 130021, China; 2. Key Laboratory of Power System Simulation and Control of Ministry Education, Tianjin University, Tianjin 300072, China)  
Delay margin is defined as the maximum time delay that system can sustain without losing its small signal stability. An effective approach is given to calculate the system delay margin. It determines the system critical eigenvalue and the local delay margin by tracing eigenvalue locus of a complex matrix in a finite interval. The proposed method does not make any transformation to the original characteristic equation. It can be applied to the delay margin analysis in the complicated bulk power systems. SMIB system and WSCC 3-generator-9-bus system are employed to validate its effectiveness.
【Fund】: 国家重点基础研究发展计划(973计划)资助项目(2004CB217904);; 国家自然科学基金资助项目(50595413 50707019);; 全国优秀博士学位论文作者资助项目(200439);; 新世纪优秀人才支持计划;; 霍英东优选资助课题(104019);; 天津市科技发展计划资助项目(06TXTJJC13700)~~
【CateGory Index】: TM744
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