近日，我国完全自主研发、世界首台基于IGCT器件的新一代直流输电换流阀—混合换相换流阀(以下简 称"新型HCC换流阀")在国家电网公司河南灵宝背靠背换流站投入商业运行，标志着困扰全球直流输电 领域半个多世纪的"换相失败"关键技术难题得以攻克。 换流阀是直流输电工程中实现交流电与直流电转换的核心设备，就像是直流输电工程的"心脏"。目前， 世界上直流输电工程普遍采用的传统晶闸管换流阀，受制于晶闸管固有只能控制开通不能控制关断 的"半控"特性，交直流电转换过程中存在"换相失败"风险，引起电能输送过程"骤停"，影响大电网安全 稳定运行。 此次投运的新型HCC换流阀一举解决了以上难题，实现了微秒级时间内电流的精准识别、快速切断， 能开能关("全控"特性)，从根本上解决"换相失败"问题。目前，该技术先后被列入国家工业和信息化部 2024年首台(套)重大技术装备推广应用指导目录、国家能源局第五批能源领域首台(套)重大技术装备名 单。中国机械工业联合会组织召开的鉴定会意见指出，该产品"性能指标达到国际领先水平""建议加快 工程应用"。 党的二十届四中全会提出，加快高水平科技自立自强，加强原始创新和关键核心技术攻关，推动科技创 ...

Core Viewpoint - The successful operation of the new HCC converter valve marks a significant breakthrough in addressing the "commutation failure" issue that has plagued the global DC transmission sector for over half a century [1][2]. Group 1: Technology and Innovation - The new HCC converter valve, developed entirely in China, is the world's first based on IGCT devices and has completed a 168-hour trial run before being put into commercial operation [1]. - This technology allows for precise current recognition and rapid disconnection within microseconds, fundamentally solving the "commutation failure" problem [1][2]. - The product has been recognized as reaching international leading performance levels and is included in key national technology promotion directories [2]. Group 2: Industry Impact - The HCC converter valve is expected to enhance the stability of the Henan power grid and increase the proportion of renewable energy transmitted, supporting the construction of a new power system and the achievement of carbon neutrality goals [2]. - The Lingbao back-to-back converter station, where the new valve is installed, has been operational for 20 years and has transmitted over 130 billion kilowatt-hours of electricity, significantly reducing coal consumption and carbon emissions in the region [2].