首页 | 官方网站   微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   2篇
  完全免费   1篇
工业技术   3篇
  2010年   1篇
  2008年   1篇
  1996年   1篇
排序方式: 共有3条查询结果,搜索用时 15 毫秒
1
1.
郭清滔  吴田 《继电器》2010,38(2):146-152
在我国3~66 kV配电网中,广泛采用非直接接地系统,也就是小电流接地系统。而此类系统发生最多的是单相接地故障,如何快速准确地检测出故障线路一直是电力系统继电保护的重要研究课题。回顾了小电流接地系统单相接地故障选线方法发展的历史,对现有的各种选线原理和方法做了系统归纳和比较,提出尚需要解决的问题,并给出了几点结论。  相似文献   
2.
A speedy algorithm that utilizes both fixed-point iteration (FPI) and matrix inversion is developed for solving a set of nonlinear, coupled algebraic equations for the concentrations of the quasi-steady state (QSS) species in reduced mechanisms. It is shown that the slow convergence of FPI experienced in some reduced mechanisms is caused by QSS species that are strongly coupled. A method is developed for identifying groups of QSS species that are coupled and closely connected. During the iteration, the concentrations of those species without coupling to other species are obtained by FPI. The concentrations of species in coupled groups are solved by matrix inversion as FPI is inefficient. Using three reduced mechanisms with total number of QSS species ranging from 17 to 251, the performances of the proposed algorithm are extensively assessed. It is concluded that the proposed algorithm offers significant CPU savings when the coupling among species is strong.  相似文献   
3.
针对具有输出关联不等式的束和非凸目标函数的大规模工业过程稳态优化控制问题,提出一种全新的两级协调求解算法。该算法由三层构成,上层和中层是两个协调器,下层是各局部决策单元。在较弱的条件下,获得了算法的全局收敛性定理。数字仿真结果表明了该算法的有效性和实用性。  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号