vegetable oil transformer with the highest voltage level in China
Recently, the first domestic 220kV / 240MVA vegetable oil transformer with the highest voltage level and the largest capacity developed by Xidian West substation under China XD Group successfully passed the type test, which further consolidated China XD Group's leading position in the field of vegetable oil transformer and marked China's development in vegetable oil transformer design The field of manufacturing technology has reached a new level.
It is understood that the application of traditional mineral insulating oil has a history of hundreds of years, but it has some disadvantages, such as low ignition point, slow degradation speed, easy to pollute the environment, weak overload capacity and so on. Compared with traditional mineral oil transformer, vegetable oil transformer has the advantages of very low fire risk, strong overload capacity and low life cycle cost. Because vegetable oil is a renewable resource extracted from plant seeds, it can effectively reduce carbon emissions compared with mineral oil. At the same time, vegetable oil transformers are more widely used than the existing mineral oil transformers, especially in densely populated areas, environmental protection areas and other areas with high requirements for fire safety and environmental protection.
Xidian West substation affiliated to China Xidian group attaches great importance to the research and development of the insulating oil transformer. Because of the particularity of the product, the technical backbone gave item by item guidance to the workshop production personnel, participated in the whole process, controlled at all levels and implemented item by item in the process related to insulating oil, so as to ensure the reliability and quality of the product. After nearly two years of scientific research, China XD Group has overcome the technical problems such as insulation design and verification, temperature rise optimization and verification, partial discharge control of large vegetable oil transformer, and solved the key technologies such as design and verification method and manufacturing process of large vegetable oil transformer. The first 220 kV vegetable oil transformer with independent intellectual property rights in China was successfully born.