N.M. Avouris, D.D. Semitekos, and D. Halvatzaras
Alarm processing, intelligent system, human-computer interaction, operator support, transmission and generation network supervision and control
Despite today’s increased use of automation, human operators still
play a significant role in modern energy management systems. However, the operators’ tasks tend to become harder as the complexity
of the system increases. For instance, under fault conditions, the
operators are overloaded by alarm messages generated by the system. In this context the operators require some kind of assistance.
This article considers an alarm processing system in support of the
operators of a large control centre. The developed system, called
Expert Alarm Processor for Energy Networks (EXPAPEN), is a
knowledge-based system with real-time performance characteristics
that comprises two modules. The first module acts quickly on the
incoming message stream and has a permanent effect on the alarm
messages, and the second, which involves more complex reasoning,
relates the messages to the network topology. Consequently, the
system operator is presented with fewer messages of increased semantic content, while access to the raw messages is still maintained.
The process of building the system, its architecture, functional
characteristics, and its performance during experimental use are
presented. Methodological issues concerning the design of intelligent
applications for the power industry are also discussed.