国网山东省电力公司完成整村分布式光伏涉网改造

Core Viewpoint - The State Grid Shandong Electric Power Company has successfully completed the first domestic village-wide distributed photovoltaic (PV) network safety capability enhancement project, providing a replicable and promotable practical sample to address safety challenges in distributed PV systems [1] Group 1: Industry Development - Photovoltaic power generation is one of the main forms of new energy construction in China, with distributed PV systems rapidly developing in recent years, primarily installed on rooftops of rural residences and industrial buildings [1] - Distributed PV systems are connected to the grid through 10 kV or 380 V lines, but many systems have low safety standards, posing a risk of large-scale disconnection during voltage and frequency fluctuations in the grid [1] Group 2: Technical Solutions - The core component of distributed PV systems is the inverter, and directly replacing it would require a significant investment; therefore, the focus is on enhancing inverter performance through software upgrades to improve network safety capabilities [1]