灵敏度方法在电力系统分析与控制中的应用综述

A survey of sensitivity technique and its application in power systems analysis and control

灵敏度是利用系统中某些物理量的微分关系,来获得因变量对自变量敏感程度的方法。它在电力系统分析与控制中得到了广泛的应用。从时间的角度将灵敏度方法分为静态灵敏度和轨迹灵敏度两类,并在应用中根据考察变量的不同,分别进行了评述。通过综观灵敏度方法在电力系统中应用,展示了灵敏度方法具有重要的研究价值,同时,也指出了当前灵敏度研究中尚存不足:缺乏统一的理论基础;在面对实际问题时,约束限制条件未能考虑,造成灵敏度缺乏可信性;灵敏度计算速度亟待提高等。

Sensitivity method is to obtain the sensitive extend of dependent variable to independent variable, using differential relationship among physical quantifies in power systems. And sensitivity methods are widely used in power system analysis and control. The sensitivity methods are classified as static sensitivity methods and trajectory sensitivity methods based on whether time-varying condition is considered. Applications of the two kinds of methods are grouped respectively according to the investigated variable, and application of sensitivity method is surveyed. The overview of sensitivity method＇s application in power systems indicates its great researchful value. On the other hand, the limitations in research are pointed out such as lacking of unified academic basis, lacking of consideration of limiting conditions in face of practical problem, the slow computation speed of sensitivity, and so on.