The application and research of impedance-voltage compare method in the testing of distribution transformer´s capacity

The text introduce the theory and the test result of the determination of distribution transformer´s capacity in impedance-voltage compare method, and analyse the new method´s excellence in contrast to the traditional test methods of transformer capacity. The impedance-voltage compare method associating with the three element determination method can prevent the fault judgement of distribution transformer´s capacity with very high veracity. It has very high actual meaning to the work against stealing and reducing wasting electricity.