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Test study on the transient performance of the electro-magnetic type current transformer
Author(s): 
Pages: 1-4,32
Year: Issue:  13
Journal: POWER SYSTEM PROTECTION AND CONTROL

Keyword:  电磁式电流互感器暂态特性;
Abstract: 电磁式电流互感器的暂态特性对继电保护,特别是电流差动保护的动作特性有重要的影响.对此,几十年前已开始进行研究.但运行情况表明,存在一些保护误动作原因不很清楚的,最后只好归结为CT暂态影响.而暂态影响的机理仍然不很明了.通过实验进一步观察电磁式电流互感器励磁的非线性参数对暂态特性的影响,提出二次动态时间系数概念.此外,还研究了剩磁对变化过程的影响.
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