• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2014, Vol. 35 ›› Issue (1): 8-13.doi: 10.3969/j.issn.1000-7229.2014.01.002

• 理论研究 • 上一篇    下一篇

ITD和随机减量法在互联电网振荡特性分析中的应用

吴超1,门锟2,涂亮2   

  1. 1.深圳大学深圳市城市轨道交通重点实验室,广东省深圳市 518060;2.南方电网科学研究院有限公司,广州市 510080
  • 出版日期:2014-01-01
  • 作者简介:吴超(1982),女,博士,讲师,主要研究方向为电力系统动态特性分析与控制、广域测量系统及其应用,E-mail: wuchao@szu.edu.cn; 门锟(1975),男,硕士,高级工程师,技术专家,从事电力系统计算分析和运行控制技术研究; 涂亮(1982),男,硕士,工程师,从事电网安全稳定分析与控制工作。
  • 基金资助:

    国家自然科学基金项目(51207093);广东省自然科学基金资助项目(S2011040000995);广东高校优秀青年创新人才培养计划资助项目(LYM11108);深圳市科技计划资助项目(JC201105130407A)。

Application of ITD and Random Decrement Method in Oscillation Characteristics Analysis of Interconnected Power Grid

WU Chao1, MEN Kun2, TU Liang2   

  1. 1.Shenzhen Key Laboratory of Urban Rail Transit, Shenzhen University, Shenzhen 518060, Guangdong Province, China;2.Electric Power Research Institute of CSG, Guangzhou 510080, China
  • Online:2014-01-01

摘要:

弱阻尼低频振荡特性是保证系统安全稳定运行的重要基础。提出采用Ibrahim时域法(Ibrahim time domain,ITD)和随机减量法相结合的方法处理广域测量信号,实现电力系统振荡特性的系统化分析。在介绍方法基本原理的基础上,通过不同类型南方电网实测信号功率谱特征比较,建立类噪声信号基本概念,进而以36节点系统仿真信号和南方电网实测信号为例,应用上述方法提取典型信号中所包含的系统动态特征信息,实现电网低频振荡特征参数识别,为基于广域测量信号,全面、及时、准确地掌握互联电力系统动态特性奠定坚实基础。

关键词: 振荡特性, 广域测量信号, ITD法, 随机减量法, 类噪声信号

Abstract:

Timely and accurate information of weakly-damped low-frequency oscillation characteristics is important to the stable operation of system. Ibrahim Time Domain (ITD) and random decrement method were proposed to processing wide area measurement signal and systematically study the oscillation characteristics of power system. Based on the basic principle introduction of this method, the power spectral properties of different types of signals measured in China Southern Power Grid (CSG) were compared, and the definition of ambient signal was presented. Then this approach was applied to the simulation data from the 36-node system and the measured data in CSG, in order to grasp the dynamic characteristics of the interconnected power grid from typical signals, realize the characteristic parameters identification of low-frequency oscillation in power system, which could lay a solid foundation for the timely and accurate grasp of the dynamic characteristics of interconnected power system based on wide area measurement signal.

Key words: oscillation characteristics, wide area measurement signal, ITD method, random decrement method, ambient signal