我国直流输电核心装备实现关键跨越

Core Viewpoint - The successful operation of the world's first hybrid commutation converter valve at the State Grid Henan Lingbao Converter Station marks a significant leap for China in the field of core equipment for direct current transmission, transitioning from a follower to a leader in technology [2][3]. Group 1: Technological Breakthrough - The hybrid commutation converter valve, developed using self-controlled IGCT devices, addresses the long-standing issue of "commutation failure" in conventional direct current transmission systems, which has limited the capacity for large-scale clean energy transmission from the western regions to the eastern load centers [3]. - The development involved collaboration between the State Grid Henan Electric Power Company and Tsinghua University, culminating in the successful completion of type testing in June 2023, with the equipment being recognized as "internationally leading" by the China Machinery Industry Federation in July 2023 [3]. Group 2: Quality Assurance and Supervision - A comprehensive technical supervision system was established to ensure high-quality manufacturing of the hybrid commutation converter valve, focusing on key equipment, components, and processes, with 119 modification clauses developed for the implementation guidelines [4]. - The technical supervision team conducted extensive testing and quality control measures, including factory tests and performance reliability assessments, to ensure the integrity and safety of the equipment before its deployment [5]. Group 3: Project Implementation and Testing - The project entered the implementation phase in October 2025, with rigorous installation and testing protocols in place to ensure all components met high standards of quality and reliability [6]. - The successful completion of 136 testing projects, including artificial short-circuit tests, demonstrated the new valve's ability to prevent commutation failures caused by AC faults, achieving performance indicators that meet international standards [6].