Recently, the world’s first international standard in the field of PV direct current (DC), “Distributed Photovoltaic Power Generation Systems Integrated into Low-Voltage Direct Current Systems and Use Cases” (IEC TR 63534 ED1:2025), was officially released. This standard was jointly developed by Shanghai Jiao Tong University and Huaneng Jiangsu Company, in collaboration with experts from 14 countries, including Germany and the United States.
The standard focuses on typical scenarios and key technologies for integrating distributed PV into low-voltage DC systems. It systematically compiles relevant global engineering case studies, summarizes the evolution of PV DC interface equipment, and defines technical requirements for system control, fault response, and stable operation in low-voltage DC systems.
