华南理工大学学报(自然科学版) ›› 2008, Vol. 36 ›› Issue (2): 139-146.

• 动力与电气工程 • 上一篇    

互联系统结构保留的频率慢动态仿真分析

刘磊1 杜兆斌2 管晓宏1 张尧3 倪以信2 石立宝4   

  1. 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, 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
  • 收稿日期:2006-12-15 出版日期:2008-02-25 发布日期:2008-02-25
  • 通信作者: 刘磊(1976-),男,博士生,主要从事复杂系统建模与仿真、大型电力系统动态安全性研究. E-mail:lliu@sei.xjtu.edu.cn
  • 作者简介:刘磊(1976-),男,博士生,主要从事复杂系统建模与仿真、大型电力系统动态安全性研究.
  • 基金资助:

    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(50337010;60574087);国家“863”计划项目(2004AA412050)

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

Liu Lei1  Du Zhao-bin2  Guan Xiao-hong1  Zhang Yao3  Ni Yi-xin2 Shi Li-bao4   

  1. 1. State Key Laboratory for Manufacturing Systems Engineering, Systems Engineering Institute, Xi'an Jiaotong University, Xi'an 710049, Shanxi, China; 2. Department of Electrical and Electronic Engineering, University of Hong Kong, Hong Kong, China; 3. School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong, China; 4. National Key Laboratory of Power Systems in Shenzhen, Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, Guangdong, China
  • Received:2006-12-15 Online:2008-02-25 Published:2008-02-25
  • Contact: 刘磊(1976-),男,博士生,主要从事复杂系统建模与仿真、大型电力系统动态安全性研究. E-mail:lliu@sei.xjtu.edu.cn
  • About author:刘磊(1976-),男,博士生,主要从事复杂系统建模与仿真、大型电力系统动态安全性研究.
  • Supported by:

    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(50337010;60574087);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.

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

Abstract:

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.

Key words: interconnected power system, slow-frequency dynamics, time-domain simulation, dynamic load flow, center of inertia