中国电机工程学报2017，Vol.37Issue(13)：3775-3786,12.DOI:10.13334/j.0258-8013.pcsee.162476
一种利用机端电压幅值轨迹MLE指标的暂态功角稳定在线辨识方法
An Online Identification Method for Transient Angle Stability Using MLE Index of Generator Terminal Voltage Amplitude Trajectory
摘要
Abstract
To assess the transient stability more effectively based on the real-time dynamic response information of the power grid,a data-driven online transient angle stability identification method was proposed in this paper based on the definition of maximum Lyapunov exponent (MLE) and its stability analysis mechanism.Firstly,transient angle stability analysis problem was decomposed into MLE analysis problems of terminal voltage deviation curves of the severely disturbed generators based on phase space reconstruction and the relation between transient angle stability and characteristic curves of the change rate of voltage vs.voltage deviation (Vmagcr-△ Vmag).Then,a recursive least square (RLS) based on MLE calculation model and its relevant parameter selection method was proposed.Finally,the rule of transient angle stability detection based on the MLE curves was provided and in the approach the system equivalent,simplify and homology units identification are not needed.Meanwhile,the shortcoming of setting up MLE sign observation window in advance has been overcome,which makes the approach more universal and practical.The simulation results have verified the correctness and effectiveness of the proposed method.关键词
广域测量系统/最大李雅普诺夫指数/电压幅值偏差/暂态功角稳定/数据驱动Key words
wide area measurement system (WAMS)/maximum Lyapunov exponent (MLE)/voltage deviation/transient angle stability/data-driven分类
信息技术与安全科学引用本文复制引用
魏少攀,杨明,韩学山,马世英,刘道伟..一种利用机端电压幅值轨迹MLE指标的暂态功角稳定在线辨识方法[J].中国电机工程学报,2017,37(13):3775-3786,12.基金项目
国家自然科学基金项目(51007047,51477091) （51007047,51477091）
国家电网公司科技项目(XT71-15-056) （XT71-15-056）
山东大学基本科研业务费专项资金资助项目(2015JC028,2015WLJH43).Project Supported by National Natural Science Foundation of China (51007047,51477091) （2015JC028,2015WLJH43）
Key Technology Project of State Grid Corporation of China (XT71-15-056) （XT71-15-056）
The Fundamental Research Funds of Shandong University (2015JC028,2015WLJH43). （2015JC028,2015WLJH43）
