介紹了一套已成功投入使用的變電站工作票及操作票專家系統。該系統的核心模塊采用知識工程技術，開列標準票的知識與經驗構成規則庫，將變電站的網絡拓撲結構建立關系型數據庫，推理機動態地操縱規則庫和數據庫。運用面向對象的繼承性來構造軟件的類體系，把用于安全措施的成員函數和用于操作的成員函數放入同一個類，實現了工作票和操作票的有機結合。利用Delphi6.0 建立Access 數據庫與Excel報表之間的數據通信，實現了自動開票和查詢開票的相互轉換。
關鍵詞：工作票；操作票；專家系統；推理機；數據通信
Abstract：An expert system for substation working arrangement & switching sequence is introduced, which has been successfully put into practice. The kernel module of this system adopts the knowledge engineering technology. The knowledge and the experience about generating the standard sequence constitute a rule base. A relational database which stores the network topology of the substation is designed. The inference engine uses the facts and rules to “reasoning” from the rule base and the database. Inheritance of object-oriented programming is used in the design of the software's class hierarchy. The member functions on security measures and the corresponding member functions on switching sequences are placed into the same class; which has realized the organic synthesis of working arrangement and switching sequence. Building up data communication between access database and excel by Delphi，It has realized automatic and inquiry introversion in the way of generating sequences.
Key words：working arrangement；switching sequence；expert system；the inference engine；data communication