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。
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.
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。
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.
采用面向对象的电气设备表示方法和基于产生式规则的知识表达方法，建立电网拓扑结构知识库和操作规则知识库。
The method adopts object-oriented technology for electric devices and knowledge expression based on produced rules to build topology configuration knowledge base and operation rule knowledge base.
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