The 1000m ³ hydrogen production project in Canada adopts the ZHSZCB-5800/35kV hydrogen production dry-type rectifier transformer from Shanghai Zhiyou Company. The dry-type rectifier transformer of Shanghai Zhiyou Company adopts a new insulation structure and advanced production technology, which improves the short-circuit capability and electrical strength, and has superior and reliable performance; During the design process, the impact of harmonics generated by rectifier components on transformer windings and cores should be fully considered. Sufficient margin should be provided to enable the windings and cores to withstand the additional temperature rise caused by harmonics, while maintaining low noise levels to ensure the service life of the transformer; The power grid structure is simplified and can be installed in combination with electrical equipment such as rectifiers, eliminating the need for separate design of distribution rooms and reducing investment costs.