摘要
介绍了最新研制的新型XRB-220型自适应母线保护装置的硬件组成、保护原理及功能。该装置采用新的硬件平台,采用两级32位DSP芯片及高精度A/D转换器,运算速度快,精度高;采用一种新的相量滤波器的设计方法在故障不同时刻形成不同的数据窗长度,保证了装置的自适应性;母线主保护采用复式比率差动保护,CT饱和识别采用时差法和谐波法相结合;辅助功能有母联充电保护、母联死区及失灵保护、断路器失灵保护、母线的运行方式自动识别以及隔离开关切换的正确性校验、CT和PT断线检测。保护装置还具有完善的事件报文处理及录波打印功能。
This paper introduces construction,principle and functions of XRB-220 adaptive busbar protection set.The new construction of hardware that adopts double 32-bit DSP and high-performance A/D converter amneliorates the precision and speed. A new design method of orthogonal phasor filter is used to create different data-window in different time of the fault, it makes the set high adaptive .The main protection is complicated ratio differential protection, the method of identification on CT saturation is sync identification and harmonic detection. The device also has many other protective functions such as dead-zone protection, bus-coupler failure protection and circuit breaker failure protection, and its adaptive discrimination on busbar mode. Besides, this protection set has perfect event recording and printing functions.
出处
《继电器》
CSCD
北大核心
2007年第16期7-10,共4页
Relay
基金
国家科技部攻关项目(050461002)
关键词
母线保护
自适应
复式比率
CT饱和
差动保护
busbar protection
adaptive
complex ratio
CT saturation
differential protection
