系統制御所向け事故部位判定エキスパートシステムの開発

抄録

The problem of estimating fault section is suitable for application of expert systems. In fact, many papers have been published on expert systems for this problem, but most systems use production rule for representing experts' knowldge. The use of production rule results in a system with simple knowledge representation. However, since there are many devices in power systems, a great number of rules must be described and it is difficult to check the knowledge bases.
This paper presents a new method, called the protective system simulation and describe a developed practical expert system using it. The method gives protective coordination to the assumed fault sections. Protective coordination is used for judging whether relays operate correctly, or not. It is based on the ontology, which is the basic concept of qualitative reasoning. We classified knowledge concerning estimating fault sections into two regions, non-teleological and teleological knowledge.
The method uses protection zone and time setting for representing the function of each relay. The expert system based on the protective system simulation has well maintainability and infers fault section within reasonable time. We plan to build this system into three actual control centers in 1991.