作業時操作手順自動作成システム

Abstract

An expert system is presented that produces the operation sequence for disconnecting apparatus from a power system under normal operating conditions. To maintain the reliability of power supply on the network during the operation, the operation sequence must be produced in due consideration of network states, such as load factors and routes of transmission line. Besides, since the network which the system manages includes many high-voltage consumers, the operation sequence for each consumer should be divided into detailed switch operation sequence. To produce a detailed switching operation sequence simultaneously with macronetwork operation sequence, we introduce the multilayered object-oriented network model for the knowledge base of this expert system. Each layer of this model represents network configuration in the different degree of detail, and the consistency between states of layers is maintained by an interlayer message-passing mechanism. On the layer which represents apparatus and their connections in detail, the inference engine can generate the switching operation sequence. On another layer which represents control centers and consumers, the inference engine can search for routes of power supply and can generate the sequence of changing over the network. Therefore, by using each layer properly, the inference engine can produce various kinds of operation sequences. Furthermore the object-oriented network model facilitates maintenance and extension of the system.