复转矩系数法应用于多机电力系统的修正  

Complex torque coefficients method extended to the rectification of multi-machine power systems

作　　者：李吉芳[1] 

机构地区：[1]天津大学力学系,天津300072

出　　处：《继电器》2004年第8期5-7,14,共4页Relay

摘　　要：研究了复转矩系数法的过程 ,指出传统复转矩系数法研究多机系统存在的局限性 ,提出复转矩法的概念 ,推导出具一般性的SSR判据 ,求出非研究发电机的转子角增量 ,并以IEEESSR第二标准模型为基础 ,采用特征值分析和新的SSR判据对两机系统进行对比验证 ,认为发电机之间的相互作用主要影响低频部分 ,一般性的SSR判据能够反映多机系统的真实现象。The paper analyzes the process of complex torque coefficients method, and points out the limitation of traditional method in multi machine power systems. A new conception of complex torque method is presented, a universal criterion of SSR is derived, and the rotor angle increment is solved by equations. Based on IEEE SSR, the system of two generator is studied by eigenvalue analysis and complex torque method. And the results show that the interaction of generators mostly influence low frequency region, and a universal criterion of SSR can reflect true phenomena of multi machine systems.

关 键 词：电力系统 复转矩系数法 多机系统 同步谐振 恒定阻抗模型 

分 类 号：TM712[电气工程—电力系统及自动化]