特征值对运行方式灵敏度的计算  

EIGENVALUE SENSITIVITY AGAINST OPERATING CONDITION IN POWER SYSTEM

作　　者：刘晓鹏[1] 吕世荣[1] 郭强 夏道止[1] 

机构地区：[1]西安交通大学电力工程系,西安710049

出　　处：《电力系统自动化》1998年第12期9-12,共4页Automation of Electric Power Systems

摘　　要：由一般微分代数方程组所描述的动态系统推导出其特征值对参量灵敏度的计算公式，从而对电力系统提出了一种新型灵敏度的概念。不同于以往特征值对设备参数的灵敏度，这种灵敏度反映的是特征值对于系统运行方式变化时的变化率。说明了该灵敏度的原理和计算方法。对50机的西北系统的分析表明，这类灵敏度将会有广阔的应用前景。The formulas of eigenvalue sensitivity against pararnet or are derived from the dynamic system described by general differential algebraic equations. Furthermore a new sensitivity concept is presented in this paper. Unlike the conventional sensitivity which is with respect to the apparatus parameters. the newly proposed eigenvalue sensitivity is the sensitivity of eigenvalue against the operating conditions of the system. The principle and the calculation method of the sensitivity are presented. The analysis of the 50-machine northwest power system shows that the potential applications of the new sensitivitv are wide.

关 键 词：小干扰稳定性 特征值 灵敏度 运行方式 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化]