500kV三堡变电站远动系统改造

Remote control system reconstruction of Sanbao 500 kV substation

三堡变电站远动系统第1次扩建后,各远动终端单元(RTU)节点间可相互通信、相互读取数据,远动系统在运行过程中也暴露出一些问题;通过对问题进行分析,强调再次扩建远动系统进行系统改造的必要性。基于集中管理思想,提出了500kV三堡变电站远动系统的改造方案。该方案使用通信处理机对全部RTU节点进行集中管理并负责与各级调度通信,改造后各RTU节点只负责自身数据采集和处理,RTU从原来复杂的通信事务中解脱出来。阐述了改造后远动系统的结构和功能,并对新系统的特点和运行状况进行了总结。

After the first expansion of the remote-control system of 500 kV Sanbao substation,problems were found in data exchange among RTU（Remote Terminal Unit） nodes. Based on problem analysis,the necessity of system retrofitting in its further expansion was emphasized. Based on the centralized management concept, the reconstruction scheme of Sanbao 500 kV substation remote -control system was provided, which uses the communication processor to centrally manage all RTU nodes and communicate with dispatch centers at different levels. After reconstruction,each RTU node is only in charge of collecting and processing its own data and gets free from heavy communications. The structure and functions of the new system are described in detail and its features and operation status are summarized.