一种分布式SCADA消息中间件设计方案测控技术与仪器仪表

A design scheme of distributed message middleware for SCADA system

随着分布式SCADA系统在铁路牵引供电应用的不断推广,SCADA系统节点之间以及与其他异构系统之间进行消息数据传递面临着效率降低、接口不统一等问题。针对此问题,提出一种基于发布/订阅模式的分布式SCADA消息中间件的设计方案,该方案使用了N-Tree结构将系统消息进行逻辑区域划分,设计了一套完善的消息传递与反馈处理机制,方案中利用Quorum-Based改进型算法确保了分布式节点的消息一致性。实践及仿真实验证明,本方案提高了SCADA系统的消息传递效率,降低了分布式系统的运行负载和通信开销。

With the development of distributed SCADA system in railway traction power supply application, the data transfer be- tween nodes in SCADA system and other heterogeneous systems is faced with the problems such as lower efficiency, and the inter- face is not uniform. Aiming at this problem, this paper proposes a design scheme of distributed SCADA message oriented middle- ware based on publish / subscribe model. The scheme uses the N-Tree structure to divide the system message into a logical area, and designs a set of perfect message passing and feedback processing mechanism. In the scheme, the Quorum-Based algorithm is used to ensure the consistency of the distributed nodes. Practice and simulation experiments prove that this scheme improves the message passing efficiency of SCADA system, and reduces the running load and communication overhead of the distributed system.