Who is Strong in Smart Grid? In 2021, the Jiangsu Nanjing smart grid industry won the Advanced Manufacturing Industry Cluster Competition of the Ministry of Industry and Information Technology and joined the "national team" of advanced manufacturing industry clusters; In 2022, Nanjing launched an action plan to build a 500 billion level smart grid industry cluster; In June of this year, the "Nanjing Action Plan for Promoting Industrial Strength (2023-2025)" proposed that by 2025, Nanjing's smart grid will become a leading world-class industrial cluster in China. From leading the domestic market to competing globally, Nanjing harbors industrial ambitions. Nanrui Group is undoubtedly the flagship of this industrial aircraft carrier. In 2022, the industrial scale of the Nanjing smart grid cluster reached 268 billion yuan, of which Nanrui Group achieved a revenue of 47.8 billion yuan, a year-on-year increase of 16.3%. Here you can see the development process of Nanrui Group: it was developed from the Nanjing Automation Research Institute of the Ministry of Electric Power, established in 1973. After several generations of continuous efforts by scientific and technological personnel, it has received a total of 86 national level scientific and technological awards. It has achieved international leadership and independent control in important areas such as ultra-high voltage, large power grid safety and stability, grid dispatching automation, and relay protection. From lighting up light bulbs to lighting up the industry, the new type of power system has developed into a huge and complex industrial system, and its safe and stable operation is a "national giant" and also a world-class challenge. In the Nanrui exhibition hall, the 10 large characters "Guardians of the Safe Operation of the Power Grid" are particularly eye-catching. Such confidence comes from the power grid safety and stability device and control system developed by the Xue Yusheng team of Nanrui Group. Xue Yusheng, an 82 year old academician of the CAE Member independently trained by NARI Group, has been engaged in the research of power system stability theory and power system automation since his doctoral degree in 1985. In his view, the "novelty" of the new power system lies in the need to adaptively respond to uncertain states and events in various related fields, as well as to meet the multi-objective optimization needs of different fields, etc. This requires us to carry out a lot of source innovation work, one by one to overcome difficulties. However, the process of tackling scientific research is arduous, not only requiring one to sit on the "cold bench", but also sometimes facing industry skepticism. Xue Feng, Chief Expert of State Grid Corporation of China and Director of the System Protection Laboratory of NARI Group, joined Xue Yusheng's team in 1992. He still remembers that Xue Yusheng used the motto of "self knowledge, the path of loneliness" back then