基于非线性灵敏度与曲线拟合法的负荷裕度快速算法  

Fast algorithm based on non-linear sensitivity method combining generalized curved fitting method for loading margin

作　　者：罗小春[1] 李华强[1] 程超[1] 柳华栋[1] 

机构地区：[1]四川大学电气信息学院,四川成都610065

出　　处：《电力系统保护与控制》2008年第15期50-55,共6页Power System Protection and Control

摘　　要：采用非线性灵敏度法对支路事故进行初步排序,避免了线性灵敏度方法筛选严重事故时可能导致的漏选。然后采用二次曲线拟合的方法,将非线性灵敏度得到的负荷裕度作为步长得到第二个曲线拟合点进行拟合,比较精确地得到严重事故集的负荷裕度。该方法在IEEE30、IEEE57节点系统中得到了验证。A non-linear sensitivity method is described in the beginning of this paper, which is used to rank branch contingencies to avoid leakage of ranking severe contingencies by linear sensitivity method. Secondly, the quadratic curve method is applied to obtain accurate load margins of critical contingencies by using load margin, which is used to be the step calculated through non-linear sensitivity method. The performance of the proposed method has been well tested by the numerical examination in IEEE 30-bus, 57-bus test power system.

关 键 词：事故筛选与排序 非线性灵敏度 曲线拟合 

分 类 号：TM712[电气工程—电力系统及自动化]