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.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第15期50-55,共6页
Power System Protection and Control
关键词
事故筛选与排序
非线性灵敏度
曲线拟合
contingency screening and ranking
non-linear sensitivity
generalized curve fitting
