Transformers are one of the main equipment in the power system, playing a role in energy conversion. In order to ensure the normal operation and effective energy conversion of transformers, it is necessary to use a series of specialized equipment to regularly check the reliability of their functions. This article will provide a detailed introduction to the various equipment and functions required for measuring transformers.
Transformer testing equipment
1. Impact closing test at rated voltage, with 5 no-load impact tests conducted according to the operation ticket during the operation process;
2. Measure the DC resistance of the winding and bushing, and check the process quality of the winding;
3. Check the voltage ratio of all taps and outgoing lines;
4. The transformation ratio and polarity of current transformers;
5. Measure the insulation resistance of each fastener and iron core that is insulated from the iron core;
6. Check the dielectric loss angle and tangent value of the winding and bushing;
7. Check the transition resistance test of the on-load voltage regulation switching device tap position;
8. Measure the insulation resistance, absorption ratio, or polarization index of the winding and bushing;
9. Inspection of transformer winding deformation test;
10. AC withstand voltage test of winding and bushing;
11. Check the long-term induced voltage test and partial discharge test of the winding and bushing;
12. Transformer impedance test;
13. Comprehensive Analysis of Transformer Insulation Oil
14. Insulating oil chemical analysis equipment
Insulation oil is an important component of the internal insulation material of transformers, and its insulation performance is crucial for the normal operation of transformers. In order to evaluate the performance and quality of insulation oil, it is necessary to use an insulation oil analyzer to analyze various physical and chemical indicators, such as moisture content, acid value, dielectric strength, carbon dioxide, etc.