July 10, 2020 3:00 pm，By Graduate School of Shandong University、Sponsored by the Postgraduate Affairs Department of the Party Committee，The "Jixiafeng" graduate academic forum hosted by the School of Electrical Engineering was successfully held through the Tencent conference platform。The guest speakers of this forum are Jin Chaoyang, associate professor at the School of Electrical Engineering, Shandong University, and postdoctoral research assistant in multi-energy network engineering at the University of Manchester、Assistant Professor at Sacak Institute of Science and Technology, University of Kragujevac, SerbiaDr.Dragan Ćetenović，The topic of the lecture is "Protection and Control Systems and Wide Area Solutions"。This forum is hosted by Associate Researcher Cai Deyu, School of Electrical Engineering, Shandong University。

The beginning of the lecture，Jin Chaoyang starts from the development history of power system，Introduction to state estimation and its importance。He pointed out，The key component of the power system state estimation distributed management system is the state estimation function，The task is to exploit an available set of measurement data，Optimal estimation of complex bus voltages for the entire power system。Then analyzes different types of state estimation algorithms，Detailed introduction to the maximum similarity estimation method，And compare with other state estimation methods。The second part revolves around the state estimation function，Introduction to topology processing and observability analysis，Use the maximum standardized residual test method to detect bad data，And anomaly detection and identification。Part 3 describes the challenges posed by simultaneous measurement techniques，Lines are introduced separately、The uses, advantages and disadvantages of hybrid and dynamic state estimation。

Dr.DraganExplained firstDMS/SCADASystem configuration，From purpose、Configuration、Compare the differences between transmission systems and distribution systems in terms of three-phase systems。Clear analysis of different types of tests in smart power distribution systems，Then the distribution system state estimation model and algorithm are introduced in detail，Includes static estimation and predictive auxiliary state estimation。He pointed out，Due to the urgent need to improve situational awareness，Future distribution system state estimation will include phasor measurement units(PMUs)——Real-time power distribution system status estimation platform，and presented its relevant research plans。

In the subsequent question and answer session, Jin ChaoyangandDr.DraganCai Deyu gave detailed answers to students’ questionsAssociate ResearcherAlso expressed his doubts about the state estimation method。This issue of the "Jixiafeng" graduate student academic forum ended successfully with more than a hundred graduate students watching online。

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Jin Chaoyang，Associate Professor, School of Electrical Engineering, Shandong University、Master’s tutor；2013Bachelor's degree from North China Electric Power University and University of Manchester，2018Received PhD from the University of Manchester。The research direction is estimation of key parameters of low inertia power systems，Power grid status estimation。

Dragan Ćetenović，Postdoctoral Research Assistant in Multi-Energy Network Engineering at the University of Manchester；Assistant Professor at Sacak Institute of Science and Technology, University of Kragujevac, Serbia；2019Received PhD from University of Kragujevac, Serbia。The research direction is advanced state estimation for comprehensive multi-energy network dynamic security assessment、Power system fault analysis、Power system protection、Distribution network and distributed energy resources。