电力系统自动化Issue(4)：19-25,7.DOI:10.7500/AEPS20150527007
一种多频振荡场景下的失稳模式划分方法
Classification of Unstable Modes Under Multi-frequency Oscillation
摘要
Abstract
Since the motion of the multi machine system under large disturbance can be divided into relative motion between clusters and relative motion in clusters,the concept of transient energy between clusters and transient energy within clusters can be put forward.The out-of-step time tm can be acquired based on the characteristics of transient energy between clusters of the original system and complementary-cluster energy-barrier criterion.By analyzing the characteristics of the transient energy between clusters of subsystem,the critical clearing time tn can be acquired.The unstable modes can be classified as successive-unstable mode,strictmulti-group mode and inexactmulti-group mode by comparing the duration of tm ,tn and tc(faultclearing time).Besides,splitting strategies are also provided for different instability modes,which have guiding significance for the splitting strategy under multi-frequency oscillation. The correctness of the foregoing analysis has been proved through simulation verification of an actual power grid model. This work is supported by State Grid Corporation of China,Major Projects on Planning and Operation Control of Large Scale Grid(No.SGCC-MPLG01 9-2012) and Fundamental Research Funds for the Central Universities (No.201 5MS94).关键词
暂态能量分解/群间暂态能量/多频振荡/失稳模式划分/解列方法/稳定分析Key words
decomposition of transient energy/transient energy between clusters/multi-frequency oscillation/classification of unstable modes/splitting method/stability analysis引用本文复制引用
胡永强,陈长胜,赵书强,王增平,秦晓辉..一种多频振荡场景下的失稳模式划分方法[J].电力系统自动化,2016,(4):19-25,7.基金项目
国家电网公司大电网重大专项资助项目(SGCC-MPLG019-2012) （SGCC-MPLG019-2012）
中央高校基本科研业务费专项资金资助项目(2015MS94)。 （2015MS94）
