低电压法测试变压器短路阻抗

Testing Short-circuit Impedance of Transformer by Low Voltage Method

短路阻抗作为变压器的原始指纹型参数,是判断变压器绕组有无变形的唯一判据,由于变压器短路阻抗测试需要较大容量的试验设备,受现场实际条件所限,试验电流达不到变压器额定电流,这种情况下采用低电压短路阻抗的测试方法进行测试,为变压器短路阻抗测试提供一种便捷的试验方法。

As the original fingerprint type parameter of transformer, short-circuit impedance is the only transformer short-circui criterion of judging the transformer winding deformation. Because the t impedance tests need to use large capacity test equipment and the test current can＇t reach the transformer rated current due to the limit of the field actual conditions. In this case, the low voltage method is applied to the short-circuit impedance test, and is a convenient method for the test.