Field No-load Test and the Uncertainty Calculation of No-load Loss Measurement Uncertainty for UHV Disintegration Transformer

The application of UHV disintegration transformer effectively solves the difficult problem of the construction of UHV power transmission and transformation project in remote areas. In order to verify the quality of the disassembly, transportation and assembly of the UHV transformer, to ensure safe and stable operation of UHV power grid, it is necessary to carry out no-load test at the site of UHV disintegration transformer. The principle of no-load test is described and the parameters of no-load test are calculated, the feasibility of no-load test at the site is demonstrated and the parameters of no-load test equipment selection and design ensure the on-site no-load test carried out smoothly. Finally, the uncertainty analysis of on-site no-load test is analyzed and calculated, the result shows that the designed no-load test equipment can meet the requirements of no-load test.