报告题目：Voltage Stability Assessment, Monitoring and Control in the New Environment

报 告 人: Prof. Venkataramana Ajjarapu

报告时间: 2017年8月16日，10:00 am– 12:00pm

报告地点: 清华大学西主楼2区203会议室

联 系 人: 孙宏斌 电话：62783086

Dr. Venkataramana Ajjarapu received his MS from IIT Kanpur India in 1982 and PhD from University of Waterloo, Canada in 1986. After completing his PhD he joined Iowa State University. Currently he is David C. Nicholas endowed professor in the department of Electrical and Computer Engineering at Iowa State University. His areas of research include power system voltage stability and security, computational techniques for power system dynamics and control. He published around 190 research papers in technical conferences and journals. He is IEEE Voltage Stability Working Group chair. He is the Editor of IEEE transactions on power systems. He received IEEE PES Technical Committee prize paper award for 2014. He is Fellow of IEEE. He is Iowa State University Site Director for Power System Engineering Research Center (PSERC).

Abstract:

This talk first provides a brief overview of power system voltage stability that includes both short term and long-term aspects. Short term voltage stability is a growing concern in the industry due to the increasing penetration of induction motors and power electronic loads. Long-term voltage stability involves slower acting equipment and the time scale of the phenomena may extend to several minutes. This talk then presents ways to quantify short-term as well long-term voltage stability in real time. For short-term, PMU based model free approach is presented. For long-term, reactive power reserves in the system are related to voltage stability via local linear regression. Recent Thevenin based approach that includes reactive power limits is also discussed for long-term voltage stability monitoring and control. Also the talk will address the recent changes taking place in the distribution system (distributed energy resources) that will impact the overall power grid stability.