November 5-6, 2020，The 9th China-Korea Joint Seminar on High-proportion Renewable Energy Grid Integration hosted by the School of Electrical Engineering of Shandong University was successfully held in Jinan, Shandong，Professor Zhang Hengxu, Executive Vice President of the College、Professor Kyeon Hur of Yonsei University delivers a welcome speech，Professor Wang Hongtao of Shandong University delivers an opening speech，More than 100 people from more than 10 units from China and South Korea participated in this meeting。This meeting will be held jointly offline and online，Chinese personnel，Including Tsinghua University，Shanghai Jiaotong University，Zhejiang University，Huazhong University of Science and Technology，North China Electric Power University，Northeast Electric Power University，Hohai University，Nantong University，More than 60 people from 9 units including Shandong University participated in the meeting offline，AndParticipants from South Korea，Including Yonsei University，Korea University，National Mokpo University，Inje University，More than 60 people from 6 units including Pohang University of Science and Technology participated in this meeting through online reports and discussions at Tencent Conference，ConferenceFull communication in English。The participating scholars discussed the related issues and technologies brought about by "high proportion of renewable energy grid integration"，The event was a complete success。

at“Increase the proportion of renewable energy access”In the special topic, Associate Professor Zhang Ning of Tsinghua University did it“Challenges and Solutions for High Penetration of Renewable Energy in China”’s report，The report shows the different challenges posed by the current increase in the proportion of new energy in China’s power grid，and further elaborates on solutions to the challenges，For example, cross-region interconnection，Multiple energy integrated system，Concentrated solar energy (CSP），Energy storage strategies under market environment, etc.；from Mokpo National UniversitySoo Hyoung Lee Professor’s report “Prospect of Low Voltage Power System with High Renewable Penetration”From government policy、Public-private partnerships and other aspects predict future low-voltage grade systems with high renewable energy penetration in South Korea，And from system inertia、Comparison of different operating modes of the system、In-depth introduction to the research on three aspects of multi-microgrid system。

Professor Wang Hongtao of Shandong University focuses on research on the restoration of unconventional power systems with inverter-type power supply access，And did“Unconventional State Power System Restoration with Inverter Based Resources”’s report，Revolving around improving wind power、Grid-connected control performance of new inverter-based power supplies such as photovoltaics and energy storage，Detailed introduction to the extreme security risks faced by the power grid；Professor Yuan Yue from Hohai University is conducting research on distributed renewable energy on the distribution network side，Done“DG Power Modeling and Capacity Assessment in Active Distribution Network”’s report，Report around modeling of distributed renewable energy，Modeling of active distribution networks and generation guidelines for distributed renewable energy are introduced in detail。

at“Wind turbine unit&Frequency control”In the special topic, Professor Qu Ronghai from Huazhong University of Science and Technology is in“Dual-Electrical-Port Electrical Machines”The report introduces the research on the winding structure of dual electromechanical port motor；Yonsei UniversityYong Cheol Kang Professor “Frequency Smoothing of a Wind Turbine Generator in Association with a Two-Valued Control Gain”’s report introduces frequency fluctuation smoothing control of wind turbines，Compared with fixed gain、Variable gain、The control effect of frequency control with binary gain on the frequency fluctuation caused by wind turbines；Teacher Yang Dejian from Nantong University is giving a report“Short-term Frequency Support of a DFIG Based on An Adaptive Power Reference Function”Introduces a short-term frequency support method for doubly-fed wind turbines based on adaptive power reference function。

at“Renewable Energy Management”In the special topic, from Inje UniversityJae Woong ShimThe professor gave a report on the charging method of electric vehicles“Grid-Supportive Electric Vehicle Charging Methodology with Energy Management for Coordinated Grid Frequency Control”；Professor Shi Lipao from Tsinghua University focuses on dynamic economic dispatch，Reporting“Dynamic Economic Dispatch with Wind Power Based on An Improved Scenario Method”A new wind power scenario generation and reduction method is introduced；Pohang University of Science and TechnologyYoungjin KimThe professor gave a report“Optimal Data-driven Demand Response”, introduces data-driven demand-side response optimization.

at“Analysis on power system stability and security of high proportion of renewable energy connected to the grid”In the special topic, Professor Yan Qiangui from Northeast Electric Power University is here“Modeling and Analysis of Subsynchronous Oscillation between Direct-drive Wind Turbines and Weak AC Power System”The mathematical model of permanent magnet synchronous wind turbine is introduced in the report、Establishment of wind farm aggregation model，An in-depth analysis of the subsynchronous oscillation problem of the power system connected to the wind farm was carried out through the complex moment coefficient method；from Korea UniversitySung-Kwan JooThe professor is giving a report“Non-intrusive Load Monitoring and Event Identification Technique”Introduces research on load detection and event identification；Dr. Xu Jin from Shanghai Jiao Tong University is giving a report“Microsecond Electromagnetic Transient Simulation for Renewable Energy Integration”Introduction to power electronic switches in real timeEMTApplication in simulation; Professor Sun Mingyang from Zhejiang University did it“Data-driven Dynamic Security Assessment of Large-scale Power Systems with High Renewable Energy Penetration”’s report，In-depth explanation of the research status and future prospects of data-driven dynamic assessment in large-scale power systems。

After four topics, experts and scholars contributed14Wonderful report。After each report，There are both offline and online Q&A sessions for participants，With video technology support from two cameras on site，Real-time interaction between Korean personnel online and Chinese personnel offline，Automatically switch to the video image of the speaker on the big screen，Let online and offline people communicate smoothly "face to face"。

After the special report is the thesis report session of the doctoral students，China and South Korea each selected from the posters on site5Excellent representatives gave reports，PhD candidates from China and South Korea alternately appear，Total presented10Field report。The students’ reports presented details and data not found in the professors’ reports，The pace of the speech is faster，Attracted more attention from online viewers。In the Q&A session，Experts from China and South Korea ask more questions to each other’s students，The interaction between online and offline has reached a climax。Finally, it was unanimously recommended by the jury of professors from China and South Korea，Zhang Ziyang from Tsinghua University and Korea UniversityHwanhee ChoStudent won the best paper award.

In the free discussion session，Experts and scholars from China and South Korea further discussed in depth technical issues of common interest to both parties in the integration of high proportions of renewable energy into the grid。The two parties conducted full exchanges and discussions on the challenges brought by the high proportion of renewable energy to the grid and related research，Broadened research horizons，Colliding with many valuable new ideas，Guide the future research direction。Last，See you again next year in Jeju Island, South Korea。

China-South Korea joint seminar on high-proportion renewable energy grid connection was successfully held，Promote academic exchanges and complementary scientific research between China and South Korea，It will definitely further help my country’s renewable energy grid-connected scientific research and technology reach a new level。