地区电网继电保护运行决策专家系统知识结构化表示方法研究

Reasearch on Structured Object Representation of Knowledge on Protective Relaying Decision-making and Expert System for Sub-transmission Networks

该文利用面向对象表示法,将地区电网继电保护运行决策专家系统中的决策知识按照设备运行状态、设备动作及相关属性划分为决策知识元和属性知识元2类,存储在基于产生式表示法构建的数据表中,实现了决策知识的结构化存储。专家系统运行时,采用可扩展标记语言格式(XML)工具Quick对XML数据表文档处理,获得决策知识元数据,并调用决策知识元解析程序得到设备的类名称及设备的参数,生成结构化的决策知识XML文档,实现了决策知识面向对象的结构化表示。

In this paper, the decision knowledge of protective relaying decision-making and expert system for sub-transmission networks is divided by object-oriented representation into two parts: decision knowledge element and attribute knowledge element according to equipment operating status、equipment action and attributes and stored in data sheets which is structured by production representation. When the expert system is operating, the auto-run XML tools of 'Quick' load the original XML data sheet document and generate it into structured object representation of XML document.