7 new transformer products passed certification

Recently, entrusted by the National Energy Administration, the China National Machinery Industry Federation organized a national appraisal meeting of 7 new products for West China Electric Power in Xi'an.

The appraisal committee heard reports on the development of 7 new products of West China Electric Power West, reviewed the appraisal data, reviewed the original test records and type test reports, and passed the state-level technical appraisal of the seven new products. It is agreed that the 4 new products have reached the international advanced level and 3 have reached the international advanced level. These products have reasonable structure, advanced design and technology, and have characteristics of small discharge, low loss, low temperature rise, and low noise.

"ZZDFPZ-382000/500-600 converter transformer" is currently the world's largest single-capacity, valve side voltage of ± 600kV converter transformer. Optimization of the body insulation and oil seal structure, core lamination and fuel tank shielding structure, to solve the key manufacturing and quality control technology problems. The use of domestic insulation platens, pallets, etc., to improve the level of localization, has been running in Xiluodu - Zhejiang West ± 800kV DC transmission project.

"ZZDFPZ-382000/500-800 Converter Transformer" is currently the world's largest single-capacity, valve side voltage of ± 800kV converter transformer. Optimization of the body insulation and oil seal structure, core lamination and fuel tank shielding structure, to solve the key manufacturing and quality control technology problems. The use of domestic insulation platens, pallets, etc., to improve the level of localization, has been running in Xiluodu - Zhejiang West ± 800kV DC transmission project.

"ODFPS-1000000/1000 autotransformer" is the first ultra-high voltage autotransformer using domestically produced UHV outlets and domestic silicon steel plates. By optimizing the insulation structure at the end of the body, the magnetic shunt and the lead structure, the insulation reliability is improved.

"SSP-1210000/500 Power Transformer" is a 500kV three-phase integrated step-up transformer with the largest capacity at home and abroad developed for the 1000MW supercritical coal-fired power generation unit. It adopts the optimized design of electricity, magnetism, heat and force and adopts leakage. New structures such as magnetic control and composite shielding technology and high-current lead-out lines have controlled magnetic flux leakage, reduced losses, and solved local overheating problems.

"SFP-580000/500 Power Transformer" used double-layer four-helix for the low-voltage winding of three-phase generator transformer for the first time. The upper outlet of the first and the end, the new type of low-voltage large current lead, the transverse magnetic shielding of the fuel tank and other structures controlled the magnetic flux leakage and solved the problem. Local overheating problem.

"OSFPS-JT-750000/500 Power Transformer" is a 500kV disassembled transport, field assembled high impedance transformer. Through the optimization of the overall program, key technologies such as magnetic shunts and cooperating oil guiding structures, iron core structures, on-site process schemes and the improvement of the efficiency of on-site plant building and supporting facilities were studied. Modular assembly technology and mobile vapor phase were applied. Drying system ensures the quality of on-site processing.

"ODFSZ-400000/500 autotransformer" is the single-phase high-impedance variable flux on-load voltage regulating autotransformer with the largest capacity of the current 500kV single column. The autotransformer windings are arranged on the same main column and a novel magnetic shunt structure. Magnetic flux leakage is controlled, losses are reduced, and local overheating problems are solved.

The successful development of these new products has accelerated the localization of China's UHV AC/DC transmission equipment, effectively supported the development needs of the national power industry, improved the technological and brand advantages of West China West in the industry, and enhanced the market’s competition.