继电保护专家系统中知识的面向对象表示法

The object-oriented knowledge representation paradigm in protection expert system

比较了几种常用知识表示方法的优缺点 ,论述了面向对象知识表示法是非常适合于电力系统的先进的知识表示法 ,提出了一种将知识库和推理机相分离的新型面向对象知识表示法。结合一个实际的继电保护运行管理专家系统的研究开发 ,全面说明了该表示法中封装、继承、多态、消息发送、规则推理等技术的应用。

Some common used knowledge representation paradigms are compared and why object-oriented knowledge representation(OOKR) is the advanced paradigm is discussed in this paper which is suitable for power system. A new OOKR paradigm with the characteristic of separating knowledge base from inference engine is introduced. Detailed examples from a real protection expert system are given to demonstrate the techniques like encapsulation, inheritance, polymorphism, message-sending and rule-inference in the preferred paradigm.