多时间尺度电力系统稳定域边界校正法  

Correction of stability boundary of multi time-scale power systems

作　　者：黄平[1] 张尧[2] 刘永强[2] 曾鸣[1] 

机构地区：[1]华南理工大学数学系,广东广州510640 [2]华南理工大学电力学院,广东广州510640

出　　处：《华中科技大学学报（自然科学版）》2009年第1期130-132,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60474048)

摘　　要：研究了多时间尺度电力系统稳定域边界的校正问题.将奇异摄动理论应用于多时间尺度动力系统,给出了精确慢流形的逐次近似算法,从而获得系统的有效近似慢流形;基于近似慢流形提出了稳定域局部边界的校正法,所给算法利用5阶双时间尺度电力系统模型进行仿真计算.仿真结果表明所得校正边界比简化局部边界更接近稳定域边界,较好地提高了稳定域局部边界的计算精度.The Correction problem of stability boundary is studied for multi time-scale power systems in this paper. Singularity perturbation theory is applied to compute slow manifold of multi time-scale dynamic system, as a result approximate slow manifold is obtained. Based on approximate slow manifold, correction arithmetic of local stability boundary is presented and new arithmetic is simulated on an order-5 double time-scale power system, results indicate corrected boundary is close to stability boundary than simplified local boundary and preferably improve the precision of approximate boundary. New arithmetic provides a valid technique approach for transient stability analysis in power systems.

关 键 词：多时间尺度电力系统 暂态稳定性 精确慢流形 简化慢流形 近似慢流形 

分 类 号：TM73[电气工程—电力系统及自动化]