合州换流站500千伏交流系统一次送电成功

Core Insights - The ±800 kV Hezhou Converter Station has successfully completed a 24-hour trial operation and has been integrated into the Anhui main grid, marking the official launch of the Shaanxi-Anhui ±800 kV UHVDC project [1] - Hezhou Converter Station is the first UHV converter station to be put into operation during the 14th Five-Year Plan period of the State Grid [1] Group 1: Project Management and Quality Control - The construction of Hezhou Converter Station implemented comprehensive quality control, reviewing over 30 relevant standards and regulations, and creating a task list covering 332 specific works [1] - An innovative equipment owner system was established for full-process supervision, identifying and rectifying 443 construction issues [1] - The team utilized a "numbering and positioning method" for precise management of nearly 40,000 flow joints, ensuring all loop resistances were within required limits [1] Group 2: Testing and Safety Measures - During the commissioning phase, the testing team executed 183 operation tickets and 5,582 operational items, maintaining a zero-error record [2] - To address the complexities of concurrent testing, construction, and operation, safety measures included hard isolation barriers, warning signs, daily safety briefings, and dynamic inspections [2] - The current focus of Hezhou Converter Station has shifted to the acceptance and testing of DC field equipment, leveraging the experience gained from the initial success [2]