学术报告第201426期

报告题目： Power  System State Estimation from PMU Measurements  with Bad Data

报  告  人：Liuqing  Yang  教授

报告时间：10月9日下午4:30

报告地点：南一楼中311室

Abstract: State  estimation is  an important tool for the monitoring of the power grid. Phasor  measurement units (PMU) are expected to enhance state estimation in the power  grid by providing accurate and real-time  measurements. However, due to communication errors, equipment failures and  malicious attacks, some detrimental data may  be present in the  measurements. In  the literature, the  largest residual removal (LRR) algorithm is commonly used for phasor state  estimation with bad data. However, here we show that this method cannot  guarantee correct  bad data removal  unless  data redundancy is very large.  Then,  we  propose a general greedy bad-data  processing algorithm  by exploiting the sparsity  of the bad data.  Our  proposed algorithm can perfectly remove the bad data when only one is present.  Meanwhile, simulations  show that it works much better than the LRR for multiple bad data presence. In  addition, based on the structure of the power system, we introduce decoupled  algorithms to further improve the bad-data processing performance.

Speaker’s Short Bio:  Dr. Liuqing Yang received her Ph.D. degree in Electrical and Computer  Engineering from the University of Minnesota, Minneapolis, in 2004. She is  presently a Professor with  Colorado State University. Her general interests are in areas signal processing  with applications to communications, networking and power systems – subjects on  which she has published more than 150 journal and conference papers, 2 book  chapters and 1 book. Dr. Yang was the recipient of the Best Dissertation Award  in the Physical Sciences & Engineering from the University of Minnesota in  2004, the Best Paper Award at the IEEE International Conference on UWB in 2006,  the AFOSR Summer Faculty Fellowship in 2007, the ONR Young Investigator Program  (YIP) award in 2007, the NSF Faculty Early Career Development (CAREER) award in  2009, the IEEE  GLOBECOM 2010 Outstanding Service Award, and the George T. Abell Outstanding  Mid-Career Faculty Award in  2013. She has served as an  active reviewer for more than 10 journals, as TPC chair/member for a number of  conferences, and as an associate editor for IEEE Transactions on Communications,  IEEE Transactions on Wireless Communications, IEEE Transactions on Intelligent  Transportation Systems, and PHYCOM: Physical Communication. Dr. Yang is a senior  IEEE member, and has been the co-chair of the Mobile Communication Networks  technical committee of the IEEE ITSS since 2006.