基于关系数据库的电网结构知识表示

POWER SYSTEM STRUCTURE KNOWLEDGE EXPRESSION BASED ON RELATIONSHIP DATABASE

电网结构知识是应用于电力系统的专家系统工作的基础 ,知识表示方法的优劣直接影响专家系统的工作效率及系统的通用性。分析了应用于电力系统的专家系统中知识表示存在的问题 ,提出了用关系数据库表示电网结构知识和设备属性知识 ,并对关系表格实施强制参照完整性的观点 ,使用户对数据库的操作遵循一定的规则 ,避免因无意操作引起数据不一致的错误 ,并减少数据库冗余、提高搜索效率。最后结合实例给出了具体的实施办法 。

Power network structure knowledge is the base of expert system used in power system.The will of knowledge representation affect the work efficiency and currency of expert system.This article analyses the existing problems of knowledge representation of expert system in power system ,and advances a new point of view that represents power system structure and equipment property with relationship database which force relationship table refer to integrity to reduce redundancy of database and to keep consistency of data for im proving search efficiency.A feasible means by some instance is givenin the end.