Abstract
The application of expert systems in power systems has attracted much attention both academically and industrially. This paper reports on the development, testing, and commissioning of an expert system for the on-line control of a distribution network. The expert system is used to determine the optimal switching operation sequence for load rerouting during fault restoration, emergency operation overload relieving, and network maintenance planning. The main features of the system can be summarized as follows. Employment of hierarchical structure of knowledge base decision tree, introduction of function-oriented and network scale-oriented rules, easily changable priorities used during decision making can be done using a CRT display, in addition to the facility of changing the network operating constraints. The results of such changes can be evaluated by a built-in simulator using a snapshot of the on-line data. A tracing facility is also introduced to trace the reasoning during the decision making process. The techniques used, development process, system evaluation and testing are reported.
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