The frame knowledge representation approach is applied to the system in which the knowledge base and topology structural database of power network are saved as external databases.
该系统采用框架知识表示法，将知识库与电网拓扑结构数据库均做成了外部数据库的形式进行存储。
In the system, Relation database model is adopted to memory the parameter information of the device, and the adjacent matrix is used to memory the network topology of power system.
该系统利用关系数据库模型存储设备的参数信息，构造邻接矩阵记录电网的拓扑结构。
With OOP technology, a breaker status simulation system of protection is successfully developed, which combines the network topology graphics and backup database.
应用面向对象的编程技术，研制成功电网拓扑图形与后台数据库相结合的继电保护开关状态仿真系统。
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