电力系统自动化Issue(4)：26-31,6.DOI:10.7500/AEPS20150525008
多频振荡下失步解列判据的适用性分析
Applicability Analysis of Out-of-step Splitting Criteria Under Multi-frequency Oscillation
摘要
Abstract
The criteria for out-of-step separation equipment in current domestic engineering fields are acquired from the out-of-step two-machine equivalent power system. Its applicability under multi-frequency oscillation is yet to be found out. Expressions of electrical quantities are inferred based on a three-machine equivalent system.And it is found that the out-of-step center would migrate between different transmission lines and different positions even on one and the same transmission line.In addition,the more distinct the different modulations are,the more transmission lines will there be for the out-of-step center to migrate in between.Besides,the three out-of-step splitting criteria based on U cos φ characteristic,the measured impedance locus and the apparent impedance angle can hardly adapt to the multi-frequency oscillation scenario.It is advised that the two splitting criteria,apparent impedance angle and phase angle difference cooperate with each other to improve the correctness of out-of-step separation equipment.关键词
热稳定安全域/多维空间/多约束/分段线性近似Key words
out-of-step oscillation/oscillation center/asynchronous operation/power system stability引用本文复制引用
夏成军,陈翠琼,涂亮,陈亦平,门锟..多频振荡下失步解列判据的适用性分析[J].电力系统自动化,2016,(4):26-31,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA050209)。This work is supported by National High Technology Research and Development Program of China (863 Program)(No.2012AA050209) （863计划）
