交直流互联电力系统非线性模态分析  

Nonlinear Modal Analysis for HVDC/AC Power Systems

作　　者：刘红超 李兴源[2] 郝巍[2] 雷宪章 

机构地区：[1]许继集团公司,北京市100085 [2]四川大学电气信息学院,四川省成都市610065

出　　处：《电力系统自动化》2006年第18期8-12,26,共6页Automation of Electric Power Systems

基　　金：国家重点基础研究发展计划(973计划)资助项目(2004CB217907);国家自然科学基金资助项目(50595412;50577044);许继电力科技基金资助项目。

摘　　要：模态级数是一种新的表示非线性系统动态特性的方法。文中将模态级数法应用于包含高压直流输电(HVDC)的电力系统动态响应分析,提出了一种基于模态级数和符号代数的综合分析技术,用于分析包含HVDC的电力系统。使用该方法,可以研究电力系统遭受大扰动后的振荡模式和非线性动态行为。其研究结果适合于复杂电力系统的稳定性分析和控制系统设计。所提出的方法可以扩展到包含其他FACTS装置的电力系统。一个测试系统的非线性时域仿真结果证明了该方法的有效性。The modal series is a novel method for the representation of the dynamic characteristics of a nonlinear system. In this paper, the modal series method is applied to investigate the dynamic responses of HVDC/AC power systems. A comprehensively analytical technique based on the modal series method and symbolic computer algebra is proposed for the analysis of power systems that include HVDCs. Using this method, the oscillation modes and non-linear dynamic behavior of power systems subjected to large disturbances can be studied. The results are suitable for complex power system stability analysis and control system design. The proposed method is general and may be extended to include other FACTS devices. The nonlinear time-domain simulation results of a test system demonstrate the validity of the proposed method.

关 键 词：交直流互联电力系统 模态交互作用 模态级数法 高压直流输电 

分 类 号：TM711[电气工程—电力系统及自动化] TM721.3