再论变电站自动化系统的分析和实施

RE-DISCUSSION ON ANALYSIS AND IMPLEMENTATION OF SUBSTATION AUTOMATION SYSTEM

阐述了国际电工委员会 (IEC)对变电站自动化系统(SAS)、远方终端装置 (RTU )、智能电子设备 (IED)等术语的定义 ;分析了 SAS的分层功能及逻辑接口以及 RTU在SAS中的重要作用 ;提出了变电站自动化系统分布式结构的设计原则 ,并对时间同步和全球卫星同步系统 (GPS)

In this paper the definitions on Substation Automation System (SAS), Remote Terminal Unit (RTU) and Intelligent Electronic Devices (IED), etc., given by IEC are expounded. The hierarchy function and logic interface of SAS, the important action of RTU in SAS are analyzed. The principle for the design of distributed structure in SAS is put forward, and the importance of time synchronization and the precision of GPS are discussed.