互联系统结构保留的频率慢动态仿真分析  

Simulation Analysis of Slow-Frequency Dynamics for Interconnected Power Systems with Preserved Network Structure

作　　者：刘磊[1] 杜兆斌[2] 管晓宏[1] 张尧[3] 倪以信[2] 石立宝[4] 

机构地区：[1]西安交通大学系统工程研究所机械制造系统工程国家重点实验室,陕西西安710049 [2]香港大学电机电子工程学系,中国香港 [3]华南理工大学电力学院,广东广州510640 [4]清华大学深圳研究生院电力系统国家重点实验室深圳研究室,广东深圳518055

出　　处：《华南理工大学学报（自然科学版）》2008年第2期139-146,共8页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家重点基础研究发展计划资助项目(2004CB217900);国家杰出青年基金资助项目(6970025);国家自然科学基金资助项目(5033701060574087);国家“863”计划项目(2004AA412050)

摘　　要：大规模互联电力系统(LIPS)在长期动态中由于频率和电压的慢动态可能引发生存性危机,最终造成一些大停电事故.为此,作为LIPS慢动态频率控制器设计的第一步,文中对LIPS结构保留的频率慢动态进行了建模和仿真.在以区域惯量中心频率为区域均一频率的假设下,建立了LIPS结构保留的频率慢动态模型,并提出了时域仿真计算方法.将该方法应用于双区域4机系统和IEEE 30节点3区域系统,并在4机系统上与暂态稳定程序作比较,结果均表明相应模型和方法是可行和有效的.In the long-term dynamics of large-scale interconnected power system （LIPS）, some crises may occur due to the slow-frequency dynamics and the slow-voltage dynamics. As a result, large blackouts take place. In order to solve this problem, the slow-frequency dynamics for LIPS with preserved network structure is modeled and simulated, which is the first step in the controllor design for slow-frequency dynamics. By taking the frequency of COI （Center of Inertia） in an area as the uniform frequency of the area, the corresponding model describing the slow-frequency dynamics is proposed, and an algorithm for time-domain simulation is presented. The proposed method is finally applied to a 2-area 4-machine system and a 3-area 30-bus IEEE system. The results show that, as compared with the conventional transient stability program in the 4-machine system, the proposed model and method are both more feasible and effective.

关 键 词：互联电力系统 频率慢动态 时域仿真 动态潮流 惯量中心 

分 类 号：TM711[电气工程—电力系统及自动化] TM743