嵌入式数据库在继电保护装置中的应用

Application of Embedded Database System in Protective Relay Device

该文设计了一种高效运行在继电保护装置的通信子系统中的嵌入式数据库,实现了数据库的建立和存储,数据库的SELETE检索语句,扩充了数据库的UPDATE更新语句和并发加锁机制。不仅高效的实现了后台和人机系统的统一检索,保护子系统实时数据的动态刷新,更重要的是实现了真正意义上的通信子系统和人机子系统完全平台化。源代码和SQL语句分离,通过修改SQL和增加SQL语句以增加新的视图满足新装置的界面需求,而不需要修改人机系统和通信系统的源码,使平台能够完全适应不同的装置型号和工程需求。

In this paper, we design a embedded database system which run effectively in the communication subsystem in protective relaying device. The design realizes creating and storing of database; searching and updating SQL query process and locking record mechanism. Through this methods, Not only to achieve efficient HMI and monitoring control system unified searching, real-time data dynamic refresh from protective subsystem, and more importantly, the realization of the HMI system and the communication system completely platformization. The source code and SQL statements separated, by modifying the SQL and increasing SQL statements add new views of the interface to meet the demand for new devices, without the need of modifying the source code of communications systems and HMI system.