小浪底水电站主变压器的选择

小浪底水电站主变压器为额定容量360MV-A的三相水冷无励磁调压双卷铜绕组油浸升压变压器，产品选用10型，该变压器由国内制造。为保证产品质量，对其阻抗电压、损耗值、温升限值、局放水平、噪声水平、承受短路能力等参数，以及油箱渗漏、冷却系统等都提出了更高的要求；同时制造厂也采取了有效的保证措施，这对国产设备的质量提升起到了推动作用。主变压器自2000年投产以来，工作状况良好。

Selection of the main transformers for Xiaolangdi Hydropower Station

The main tranformer for the Xiaolangdi Hydropower Station is three-phase, non-excitation, pressure adjustment, double copper winding, oil-immersed booster transformer, with the normal capacity of 360 MVA. The tranformer of type-10, made in China, was selected. In order to ensure the quality of product, its resistance voltage, loss value, temperature rise limit, local amplifying level, noise, short circuit capacipty, leakage of oil tank and cooling system were required strictly. Meanwhile some effective measures were taken. The main transformer has been operated well since it was put into use in 2000.