For large system with more devices and operation patterns, part of the functions is implemented in RTU(Remote Terminal Unit) and FTU(Feeder Terminal Unit) to mitigate the load of main station.
针对系统规模大、现场设备多、运行方式变化复杂的特点，将部分功能下移到远动终端装置（RTU）、馈线终端装置（FTU），从而减轻主站的负担。
Substation electric energy remote terminal unit(ERTU) is an important plant-level device for substation data acquisition, and it is obviously a part of digital substation system.
变电站电能量采集终端（ERTU）是变电站数据采集的一个重要厂站级设备，也是数字化变电站的组成部分。
The design and practice of a small Remote Terminal Unit (RTU) based on an embedded microprocessor was presented in this paper, including the hardware arrangement and soft design of the RTU system.
研究了基于嵌入式控制器的小型RTU的设计与实践，包括RTU的硬件配置和软件设计。
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