摘要
基于微型计算机的失磁保护装置因其主体是计算机,所以具有很强的计算功能及记忆功能,这些特点使得保护装置可以较高精度地实现复杂的保护特性.本文所述装置的硬件由单板机及扩展的一些外部装置组成,外部装置包括数据采集系统及打印机、开关控制设备等.软件由调试和运行两大部分组成,实现了单个单板机既能作开发工具,也能作运行主机的目的.
This paper described the loss of excitation protection relaying based on a microcomputer for large synchronous generator.By mapping the critical loss-of-synchronous curve in R-X plane onto Z-θ plane,the accuracy of sectionalized linearization is improved. According to the theory that the phase difference between the fundamental components of the original signals U and J should be equal to the phase difference between the cosine/sine components obtained through Fourier analysis, a new method, the 'variable interval method', for computing the phase angle of impedance is developed.
出处
《华中理工大学学报》
CSCD
北大核心
1989年第6期93-96,共4页
Journal of Huazhong University of Science and Technology
关键词
微机
失磁
保护装置
发电机
Microcomputer
Loss of excitation protection
Synchronous generator
