Core Viewpoint - The two technological projects led by State Grid Shandong Electric Power Research Institute have passed technical appraisal, demonstrating significant economic and social benefits in the application of advanced power distribution technologies [1][2]. Group 1: Project Achievements - The project "High Reliability and High Capacity Distributed Photovoltaic Charging Resource Flexible Distribution Technology and Application" addresses challenges related to the integration of massive distributed photovoltaic resources into the distribution network, focusing on flexible networking, control, and support [2]. - The project "Built-in Sensor for Partial Discharge in Large Oil-filled Equipment and Active Fault Defense Technology and Application" targets early detection of discharge defects in large oil-filled equipment, enhancing the ability to prevent discharge-related failures [2]. Group 2: Technical Details - The flexible distribution technology project has developed a series of core equipment for flexible networking, solving key issues such as the coordinated operation of AC and DC flexible distribution networks, harmonic tracing, and fault handling [2]. - The active fault defense technology project employs high-sensitivity built-in discharge sensors and precise discharge location techniques to improve the explosion-proof capabilities of transformers and other large oil-filled equipment [2]. Group 3: Application and Impact - Both projects have been fully applied in the Shandong power grid for flexible management of distributed resources and have been promoted in other provincial power grids, yielding notable economic and social benefits [1][2]. - The appraisal committee, led by an academician from the Chinese Academy of Engineering, recognized both projects as reaching international leading levels after thorough evaluation [1].