AAs the most severe assessment method in transformer field handover tests, partial discharge test can effectively detect insulation faults inside transformer. In UHV transformer field partial discharge test, based on calculation and analysis of capacitive and inductive power, large capacity stepless adjustable reactor sense technology and inductive reactive power real-time monitoring method are presented for the first time. Adjustable reactor can smoothly adjust the reactance value to change inductive compensation state compensation, and reactive power real-time monitoring method can reflect the real-time test and ensure the efficiency and safety of the test.