Xi'an Institute of Power Electronics Technology UHV DC Transmission High Power Thyristors Pass National Identification

Recently, 5 series of UHV high power thyristors independently developed by Xi'an Power Electronics Technology Institute: 3000~3125A/8000V photo-controlled thyristors, 4000~4500A/8500V 6-inch full-voltage crimped high-power thyristors, 4000A/8000V 6-inch welded type High-power thyristor, 3400A/8000V5-inch high-power light-controlled thyristor, 5000A/8500V 6-inch high-power thyristor, passed national certification. The thyristors for direct current transmission in China have completely achieved independent production.

An appraisal committee composed of 12 experts believes that the product adopts advanced and innovative manufacturing processes and has completely independent intellectual property rights. Among them: 3000~3125A/8000V light-controlled thyristor, 4000~4500A/8500V 6-inch full-pressure-connected high-power thyristor, 4000A/8000V 6-inch welded high-power thyristor products reach the international advanced level, 3400A/8000V5-inch high-power light-controlled thyristor 5,000A/8500V 6-inch high-power thyristor products reached the international advanced level.

The products have been successfully applied to national major projects such as Xiangjiaba-Shanghai, Yunnan-Guangdong ±800kV UHV DC transmission project and Lingbao back-to-back DC interconnection expansion project, and are for the construction of ±1100kV UHV DC transmission projects with higher voltage levels. Foundation.