摘要
针对干式空心电抗器运行时存在环流损耗而导致故障的现象，利用“等电流＋ 等匝数密度”法优化匝数，使电流分布均匀．其中借助Ｂａｒｔｙ 变换可以快速准确地计算自感、互感系数矩阵，并且考虑包封厚度和电阻的影响，使结果更加真实．结合具体实例进行优化，其结果通过ＥＭＴＰ电磁暂态程序进行仿真验证，表明环流非常小．该方法收敛速度快。
For the loss of circulating current in running dry type air core reactor which may lead to faults, a method of “equal current+equal turns density” was put forward in order to distribute the current uniformly. By means of Barty's transformation this method can calculate the matrix of self and mutual inductance quickly and accurately. The coil thickness and resistances were considered also, which makes the results more convincing. In an example, the optimum result was obtained, then by the simulation of EMTP, it proves the circulating current is very small. The method has a fast convergent speed.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
1999年第12期1575-1577,共3页
Journal of Shanghai Jiaotong University
关键词
电力系统
空心电抗器
匝数
环流损耗
干式
power system
air core reactor
turns
circulation current loss
