On May 21st, [Mingli Lecture Hall 2022 Issue 29] was honored to invite Professor Peng Rui from the School of Economics and Management of Beijing University of Technology to bring an online presentation entitled "A two-dimensional maintenance optimization framework balancing hazard risk and energy consumption rates" academic report. The report was presided over by Professor Zhao Xian, Deputy Dean of the School of Management and Economics, Beijing Institute of Technology. Many teachers and students participated in this academic report.

Prof. Rui Peng shared the maintenance strategy that considers both the failure rate and the energy consumption rate. In real life, many power systems (such as cables, refrigerators, etc.) inevitably face severe energy consumption problems. A fundamental theme of this type of system maintenance strategy is how to balance reducing energy consumption and controlling the risk of failure to reduce losses. Based on the two dimensions of operating age and consumption severity, the study proposes a novel proactive maintenance strategy to guide maintenance and spare parts replacement. The energy consumption process is characterized by a semi-Markov chain. At a certain age of operation, or when energy consumption per unit of time reaches a pre-specified threshold, if the time to plan for age-based replacement exceeds a certain threshold, the system is replaced preventively. On this basis, the research establishes a maintenance optimization model and conducts an in-depth analysis of its analytical structure.

Professor Peng Rui's wonderful report aroused great interest of the teachers and students present, and broadened everyone's academic horizons. After the lecture, the participating teachers and students enthusiastically asked questions, and Professor Peng Rui gave detailed answers. This academic lecture was well received by the teachers and students and ended successfully.

Professor Peng Rui:

School of Economics and Management, Beijing University of Technology, professor and doctoral supervisor. His main research areas are energy system risk assessment and policy optimization. He has published more than 100 SCI journal papers, 5 monographs, presided over or participated in 8 National Natural Science Foundation of China or national key R&D programs, and presided over the Beijing Science and Technology Rising Star Project. Editorial board member of Reliability Engineering & System Safety, IEEE senior member, Deputy Secretary General of Reliability Branch of China Field Statistics Society, Executive Director of Industrial Engineering Branch of China Optimal Method, Coordination Method and Economic Mathematics Research Society, Executive Director of Reliability Branch of China Operations Research Society, China Commander Executive Director of the Reliability Special Committee of the Society for Control and Control. Elsevier China Highly Cited Scholars for four consecutive years from 2018 to 2021.