国内首个整村分布式光伏涉网安全能力提升改造及验证在潍坊开展

Core Viewpoint - The successful completion of the first domestic village-level distributed photovoltaic (PV) grid safety enhancement project in Shandong province provides a replicable and promotable model to address safety issues in distributed PV systems, which is a significant challenge both domestically and globally [1][3]. Group 1: Project Overview - The project was initiated by the State Grid Shandong Electric Power Company, which analyzed the risks associated with high proportions of renewable energy in the grid and supported the development of a safety enhancement plan for distributed PV systems [3]. - The enhancement plan includes the integration of all distributed PV systems into safety management, quantifying performance improvement tasks, standards, and timelines [3]. Group 2: Technical Innovations - The company proposed a software upgrade approach to enhance the performance of distributed PV inverters, significantly reducing costs compared to hardware replacements, which were estimated to require 600 to 900 million yuan [5]. - The innovative "software upgrade, no hardware change" method allows for significant performance improvements at nearly zero cost, akin to upgrading a smartphone's software [5][10]. Group 3: Implementation and Results - A pilot project was conducted in Liujiazhuang Village, where data collection and willingness confirmation for 160 households were completed in just one day, showcasing a significant increase in efficiency and accuracy [7]. - The project successfully demonstrated the feasibility of the proposed technical routes, including the "one transmission, dual reception" method for household PV systems, which drastically reduced implementation costs from thousands to hundreds of yuan [10]. Group 4: Future Implications - The distributed PV systems in Shandong province have surpassed 60 million kilowatts, making them a major power source for the grid, and the successful implementation of these technologies is expected to facilitate the high-quality development of renewable energy [11]. - The advancements made in this project are seen as a crucial breakthrough for the construction of a new power system, ensuring the stable operation of the grid and promoting a green and low-carbon transition in China [11].