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数据采集与监视控制(SCADA)系统采集的各种实时、连续、有序的值序列是典型的数据流,而目前SCADA系统所采用的实时数据库系统对数据流处理的实时性和自适应性要求尚需改进。文中以配电自动化管理为应用背景,提出一个支持配电自动化的数据流管理系统,在配电网远方终端加入查询处理层,降低网络传输负载,提高配电网数据处理的实时性和可靠性。文中描述了系统的基本结构、各组成部分的功能和关键技术,探讨了有关分布式连续查询处理、近似计算、归档数据处理等问题,并提出在数据流研究方面的一些新看法。
The real-time, continuous and ordered value sequence collected by SCADA system is a typical data stream. However, the real-time and adaptive requirements of the real-time database system used in SCADA system to process data stream Still need improvement. In this paper, the background of power distribution automation management is proposed, and a data flow management system supporting power distribution automation is proposed. In the remote terminal of power distribution network, the query processing layer is added to reduce the network transmission load and improve the real-time and reliability of data processing in distribution network . This paper describes the basic structure of the system, the functions and key technologies of each component, discusses the issues related to distributed continuous query processing, approximate calculation and archiving data processing, and puts forward some new views on data flow research.