摘要
轨迹灵敏度是电力系统动态分析的重要工具,基于轨迹计算轨迹灵敏度的卷积法揭示了轨迹与轨迹灵敏度之间的物理关系,为电力系统动态分析提供了新的手段。基于单机无穷大系统,分析了电力系统受扰后的轨迹,提出对第一个振荡周期内的受扰轨迹进行预处理的方法,用以改善卷积法计算结果的周期和频率。算例分析表明通过轨迹的预处理可以大幅度提高卷积法的计算精度。
Trajectory sensitivity is an important tool for power system dynamic analysis. The convolution method for the trajectory-based trajectory sensitivity calculation formulates the physical relationship between the trajectory and trajectory sensitivity, providing a new tool for power system dynamic analysis. On the basis of the single-machine infi- nite-bus（SMIB） system, this paper analyzes the trajectory of the disturbed power system, and presents a pre-process- ing method for the disturbed trajectory in the first oscillation cycle in order to improve the cycle and frequency of con- volution calculation results. Calculation example analysis shows that the trajectory pre-processing method can signifi- cantly improve the convolution calculation accuracy.
出处
《华东电力》
北大核心
2013年第9期1840-1844,共5页
East China Electric Power
基金
教育部"长江学者和创新团队发展计划"项目(IRT1114)
吉林市科技发展计划项目(201162503)
东北电力大学博士科研启动基金项目(BSJXM-201013)~~
关键词
电力系统动态分析
轨迹灵敏度
卷积法
单机无穷大系统
power system dynamic analysis
trajectory sensitivity
convolution method
single-machine infinite-bussystem
