AC and DC dry bushings through expert appraisal

AC and DC dry bushings through expert appraisal On December 22nd, Xi'an Jiaotong University and China West Electric High-voltage Bushing Co., Ltd. independently developed the ±800kV/3600A, ±125kV/3800A plastic-impregnated capacitance-converter casings, alternating 1100kV/3150A and 550kV/5000A oils. -The three innovations of SF6 adhesive-leaching paper-type transformer transformer bushings and ±600kV glue-impregnated paper bushings have passed the expert appraisal organized by the National Energy Administration.

The appraisal committee of China's power grid engineering expert and academician Li Lijun of the Chinese Academy of Engineering all agreed that the three types of AC and DC dry-type bushings developed by the team have achieved important breakthroughs in key technologies and achieved comprehensive domestic technical performance. The international advanced level, and the formation of UHV AC, DC dry casing production technology system with independent intellectual property rights.

The reporter learned from the appraisal meeting that the breakthrough in this innovative technological system indicates that China has fully qualified for the construction of large-scale UHV power grids on a large scale, and that the new pattern of “coal moving from the air and sending electricity to China” is expected to be realized as soon as possible.

According to reports, the development of UHV AC bushings and ±800kV UHV dry-type DC bushings is a difficult point in UHV projects and has become the biggest constraint factor in China's UHV construction and the bottleneck of the development of China's power industry. Since 2006, Xi'an Jiaotong University and Xidian University have adopted a joint research and development model of school and enterprise, set up a scientific research team, and after six years of research and development, established an ultra-high voltage AC and DC bushing optimization design platform with independent intellectual property rights. Related equipment, and built a world-class, domestic leading super (special) high pressure AC, DC casing development base.

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