This paper describes a fuzzy expert system in order to understand and deal with power quality problems encountered in distribution systems in a better way. Because of the technology and software now available this monitoring is highly effective, the fuzzy expert system not only can provide information about the quality of the power and the causes of power system disturbances, but it can identify problem conditions throughout the system before they cause widespread customer complains and equipment malfunctions. The loads in customer premises have also been the source of power quality problems. It has become important for the utilities to understand the causes for power quality problems and find ways to avoid them. The fuzzy expert system can be used in a utility for personnel training and customer education.
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