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As the most important equipment in substation, it is necessary to make power transformer intelligence firstly in smart grids construction. According to the basic specifications of intelligent machine, i.e., visualization condition, networking control and automation, this paper presents the overall framework of a developed intelligent system for an 110kV power transformer. The structural function definition,...
An electric power supplier in the deregulated environment needs to allocate its generation capacities to participate in contract and spot markets. Different trading portfolios will provide suppliers with different future revenue streams of various distributions. The classical mean-variance (MV) method is inappropriate to deal with the trading portfolios whose return distribution is non-normal. In...
Transformer deficiencies usually take many years to gestate before developing into a problem or failure. Thus the loss induced by problems or failures could be decreased if they are diagnosed earlier and a maintenance action is adopted duly. Many methods had been developed to finish this purpose, but the diagnosis results were still unsatisfied. In this paper, a case-based reasoning method is utilized...
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