2021Year10month23Sunday morning,IEEE PESPower System Dynamics Technical Committee (China) held a "New Power System Security and Stability" technical forum at the Beijing Convention Center。

This forum specially invites five experts and scholars in related fields to give special reports，Focus on hot issues such as the safety and stability of new power systems，Sharing academic achievements in recent years、Achievements of technological innovation and development。Professor-level senior engineer of China Electric Power Research Institute、Senior expert Bu Guangquan brought the first report to the conference，The title is "Some thoughts and suggestions on intelligent analysis of power system simulation"。Report proposes people in large-scale power system simulation analysis-Machine cooperation simulation mode,ieUsing human-in-the-loop expert experience to ensure problem space coverage of power system simulation analysisANDImproving the efficiency of power system simulation analysis with automatic machine simulation and artificial intelligence-based knowledge extraction. The report states thatThe transformation of power system simulation analysis from "blind stick exploration" to "radar scanning" intelligent analysis，YesSimulation research on large-scale power systems’s important direction。

Vice Dean of School of Electrical and Electronic Engineering, Huazhong University of Science and Technology、Professor Hu Jiabing, a national young talent, in a report titled "Wind Turbine Inertia Characteristics and Synchronization Issues"，Propose a unified description method for the control complexity of power electronic equipment and the diversity of inertia/primary frequency modulation control - the "mass-spring-damping" model。This model significantly deepens understanding、Description、Analysis、Optimizing the internal potential frequency response characteristics of power electronic equipment，Can be further used for frequency dynamic characteristics analysis and stability control and protection of large systems。Also，Professor Hu pointed out that the frequency response characteristics of power electronic equipment are closely related to the frequency modulation control strategy。Dynamic coupling of fast dynamic primary frequency modulation response and inertial response，The inertia and damping characteristics that jointly affect the electrical potential within the equipment。

Professor, School of Electrical and Electronic Engineering, North China Electric Power University、Doctoral supervisor Gu Xueping represents the Power System Restoration Control Subcommittee，Made a research report on the theme of "Research Status and Problems Facing Power System Restoration Issues"。Professor Gu pointed out that the system recovery process after a major power outage is a continuous system dynamic reconstruction process，Need source、NET、Charge alternating interaction，And demonstrated the navigation-based power system restoration online decision support system and its Hebei South Power Grid developed by the team、Practical application in Yunnan Power Grid。Also，Professor Gu pointed out that the existing research work on power system restoration still has insufficient applicability to the new form of power system with high proportion of new energy access and AC and DC hybrid structure，And suggest a new energy-led power system、Conduct more in-depth research under external uncertain scenarios such as extreme natural disasters and deliberate external attacks。

Permanent Professor of Department of Electrical Engineering, Tsinghua University、Deputy Director of the State Key Laboratory of Power SystemsProfessor Shen Chen’s report is titled "Digital twin technology serving energy digitization”。The report first reviews and sorts out the power system simulation、Digital Power System、Inheritance relationships between power system digital twins，clarified the concept of "digital twin"。Then，Business-oriented，Professor Shen introduced the power system digital twin technology in enhancing intelligence、Enhanced perception、Enhance cognition、Application results in enhanced control and other aspects，Demonstrates the application prospects of digital twin technology in improving the understanding and management level of power systems。

Deputy Secretary of the Party Committee of the Department of Automation, Tsinghua University、Professor Geng Hua, a national outstanding young student, gave a speech entitled "New Energy Cluster Control and Optimization on behalf of the Power Electronics and Multi-Energy System Research Center of Tsinghua University.”’s report。Professor Geng from an individual、Group、The development perspective of multiple groups，Compare the development process of new energy with the history of human social civilization，Points out that it is imperative for new energy power generation clusters to replace large-capacity synchronous units。Professor Geng thinks，From the perspective of new energy cluster development，Collaboration between multiple machines within a cluster and between clusters is crucial to improving the competitiveness of new energy power generation，will be one of the important research directions in the future，This problem not only includes the collaborative requirements of multi-time scale dynamics，Also includes the game of multi-energy entities。final，Professor Geng proposed a vision of future energy clusters: individuals have the ability to make independent decisions、The group has the ability to work together、Multiple groups have the ability to evolve intelligently。

The successful holding of this technical forum has promoted scientific research exchanges and cooperation among experts and scholars in the field of power and energy，Through in-depth communication, more sparks of wisdom can be generated to solve the challenges of the safety and stability of new power systems，Actively promote the development of safety and stability analysis and control of my country's new power system。