高速客运专线牵引变压器阻抗电压的选择

Selection of Impedance Voltage for Traction Transformer of High-speed Passenger Line

从变压器的产品标准、阻抗电压与成本的关系、阻抗电压与电压损失的关系、不同阻抗时变压器电压损失、不同阻抗时的短路电流及其引起的钢轨电位等多个方面论述了高速客运专线牵引变压器阻抗电压的参数选择问题,指出高速客运专线的牵引变压器接线采用单相变压器接线型式宜选为12.5%以上;若非单相变压器接线型式,可取选为12.5%以下。

The selection of impedance voltage for traction transformer of high-speed passenger line is stated from the aspects of transformer standard, relationship between impedance voltage and cost, relationship between impedance voltage and voltage loss, voltage loss at different impedance, short-circuit current at different impedance, as well as the potential arising of the rail. It is pointed out that with a connection of single phase transformer, the traction transformer is better to have a impedance voltage of higher than 12.5%. In case of non-single phase transformer, it is better to be lower than 12.5%.