May 23，By Graduate School of Shandong University、Sponsored by the Postgraduate Affairs Department of the Party Committee，The 22nd (total 1232nd) "Jixiafeng" postgraduate academic forum hosted by the School of Electrical Engineering was held in the lecture hall on the fourth floor of the Electric Power Building on Qianfoshan Campus。This forum invites Li Yalou, deputy director of the State Grid Simulation Center of China Electric Power Research Institute and chief engineer，The theme is "Electromagnetic transient simulation technology and application of large power grid"。The guests attending this forum include Professor Gao Jingping from the State Grid Smart Grid Research Institute、Professor Ding Lei, Dean of School of Electrical Engineering、Vice Dean Professor Ye Hua，Professor Wang Hui and Dr. Xing Facai from Shandong Electric Power Research Institute。The forum is hosted by Professor Wu Shouyuan。

The beginning of the lecture，Li Yalou’s research background、Modeling and Simulation Technology、Engineering applications and development prospects are expanded into four parts，Systematically introduces the electromagnetic transient simulation technology and application of large power grids。He first starts with the power structure、Analysis of grid structure and load structure structural changes in my country's power system in recent years。Grid side UHV DC、Flexible DC and other power transmission channels are increasing，Load-side distributed power generation is connected to the low-voltage power grid on a large scale；The proportion of power electronic equipment in the power system continues to increase，The power system shows obvious characteristics of a high proportion of power electronic equipment，Profoundly changed the stable form and operating characteristics of the power system；To cope with the simulation cognitive challenges brought about by the development of power systems，There is an urgent need to promote the improvement and engineering application of electromagnetic transient simulation technology in large power grids。

Continue，Li Yalou introduced conventional DC and flexible DC modeling from the modeling level。In simulation technology，Li Yalou focused on parallel accelerated solving - relying on super computing platform，Realizing subnetwork-level and task-level parallel solutions for large-scale electromagnetic transient parallel simulation programs，It now has the ability to provide electromagnetic transient cloud simulation services to Level 3 dispatch units of the State Grid Province，A total of millions of electromagnetic transient simulation operations have been processed since it was put into operation。In engineering applications，Li Yalou introduced several engineering examples of electromagnetic transient simulation technologies and their applications，Analysis of transient characteristics of new energy directly sent to the power grid through Zhangbei Roux、Transient overvoltage analysis of Qingyu DC transmission terminal、System safety and stability under Jiquan UHV DC large load mode, etc.。Finally，Li Yalou improves the level of refined modeling on the power side and load side、Prospects for future development in three aspects: improving the full electromagnetic transient simulation capabilities of large power grids and establishing a multi-method collaborative simulation analysis system。

Question session，The three-year action plan of the teachers and students present from the electromagnetic transient simulation work of large power grids、Ask questions from different perspectives such as structured model and encapsulated model，Li Yalou explained one by one。Wu Shouyuan also put forward his own opinions on the content of the lecture，And put forward the vision of deepening cooperation with China Electric Power Research Institute in the future。

Event last，Teachers taking a group photo together。This issue of the "Jixiafeng" postgraduate academic forum ended successfully with warm applause from teachers and students。

Speaker’s introduction:

李亚楼，Secretary-General of the National Short-Circuit Current Calculation Standards Committee，Member of CEC Power Advanced Computing Standardization Committee，Chairman of the Academic Committee of Xinjiang Key Laboratory of Whole Process Simulation of Electric Power System，IEEE Senior Member，Senior member of China Electrical Engineering Society，Member of the 9th Editorial Board of "Power Grid Technology"。Currently deputy director of the State Grid Simulation Center of China Electric Power Research Institute、Chief Engineer of Electric Power System Research Institute，Professor-level senior engineer，Doctoral Supervisor。

Long-term engagement in power system simulation、Analysis and control technology research，Presided over 1 national key R&D project、1 major integrated project of natural fund，Participate in the 973 project as the project leader、863 items、3 Natural Fund Key Projects，Completed 8 State Grid Corporation of China technology projects as the project leader，Participated in multiple EU FP7、Natural Fund Overseas Project、National Science and Technology Support Plan、Research on Science and Technology Projects of State Grid Corporation of China，Leader of "DC Grid Construction and Operation Control" of the State Grid Science and Technology Research Team，In charge of the research and development of distributed computing platform and cloud computing platform for power system，Principal Responsible Power System Analysis Synthesis Program (PSASP)、All digital simulation device for power system (ADPSS)、Power system dynamic security assessment system (DSA)、Design and development of Integrated Energy Simulation Analysis Platform (IESAS)，is mainly responsible for the construction, operation and maintenance of the new generation UHV AC and DC power grid simulation platform of the State Grid。

106 published papers，6 monographs。Won the first prize of China Science and Technology Progress Award in 2009，Won provincial and ministerial level science and technology awards 9 times，China Patent Gold Award、Excellence Award 1 time each，State Grid Corporation of China Science and Technology Progress Award 10 times，More than 40 authorized invention patents。