摘要
由于目前动态安全域搜索方法用于概率安全指标计算结果会存在一定的误差,基于正态分布函数的快速衰减特性,提出了动态安全域(DSR)的小范围搜索方法。首先搜索DSR边界超平面的估计值,据此确定一个搜索的小范围,然后在这个小范围内利用改进解析法计算DSR边界的近似超平面。新英格兰10机39节点系统上的算例误差为4.5%,说明所提方法是合理可行的。
The probabilistic insecurity index calculated by present DSR（Dynamic Security Region） search method has a certain deviation,for which,a small-range search method of DSR based on the rapid attenuation characteristic of standard normal distribution function is presented.The preliminary DSR boundary hyper-plane is estimated to determine a small search range,in which an approximate DSR boundary hyper-plane is calculated by the improved analytical method.The error of the calculated result for New England 10-generator 39-bus system is only 4.5 %,showing the proposed method reasonable and feasible.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第2期29-33,共5页
Electric Power Automation Equipment
关键词
电力系统
动态安全域
拟合法
改进解析法
概率安全性
计算
electric power systems
dynamic security region
fitting method
improved analytical method
probabilistic security
calculation
