一、问题的提出在水电站机电投资中,升压变压器的投资占有一定的比重,因此,合理选择变压器的容量,对减少电能损失、降低造价,提高电站经济效益是必要的。在目前的规程、规范及设计 First, the issue put forward In the hydroelectric station investment in electromechanical, step-up transformer investment accounts for a certain proportion, therefore, a reasonable choice of transformer capacity, to reduce the loss of electricity, reduce costs and improve the economic efficiency of the plant is necessary. In the current rules, specifications and design