The selection strategy on the main parts of transformer and its performance parameters

The selection strategy on the main parts of transformer and its performance parameters are directly related to the transformer´s reliable operation,security and economic. After investigations and analysis, some suggestions are made: the capacity and quantity of bushing current transformers should be selected reasonably; the present transformer´s fire-protection devices should be removed, and most of the main transformer´s tap-changer in power plant should be cancelled; in the premise of not increasing the costs of manufacturing, as the operation load rate of transformer, adjust the ratio between the no-load loss and load loss in order to get the transformer´s operation economically and reasonably.