Comparison of secondary equipment redundancy configuration of smart substations in China and overseas

This paper introduces the overseas smart substation technology scheme, describes the communication network architecture and equipment redundancy configuration in the typical overseas test smart substation scheme, and compares the similarities and differences between China’s smart substation redundancy configuration technology and the overseas smart substation configuration technology. The distribution of measurement and control functions of overseas smart substations that are different from China’s designs are explained in detail. The different architectures of overseas smart substations and China’s smart substations are illustrated. Finally, the suggestions of overseas Smart Substation and China’s smart substation are summarized.