A Brief Biography of Dr. Yuan Liao

Dr. Yuan Liao currently is an Assistant Professor at the University of Kentucky. He obtained his Ph.D. in Electrical Engineering from Texas A& M University, College Station, Texas in 2000. He worked as a consulting R&D engineer and then principal consulting R&D engineer at the Corporate Research Center of ABB Inc., Raleigh, North Carolina from 2000 to 2005 before he joined the University of Kentucky. His research interests include: Protective relaying; Power quality monitoring and analysis; Power system economics and optimization; Applications of signal processing and intelligent techniques; and Energy management system.

Referred Journal Papers

1. Yuan Liao and Mladen Kezunovic, “Online optimal transmission line parameter estimation for relaying applications”, accepted by IEEE Transactions on Power Delivery, in press.

2. Yuan Liao and Thai Nguyen, “Power angle stability study of a large utility system”, International Review of Electrical Engineering, Vol. 3, No. 2, April 2008, pp. 265-272.

3. Yuan Liao and Ning Kang, “Fault location algorithms without utilizing line parameters based on distributed parameter line model”, accepted by IEEE Transactions on Power Delivery, in press.

4. Yuan Liao, “Transmission line fault location algorithms without requiring line parameters”, to appear in Electric Power Components & Systems, Vol. 36, No. 11, November 2008.

5. T.S. Sidhu, J. Burnworth, A. Darlington, B. Kasztenny, Yuan Liao, et al, “Bibliography of relay literature, 2006 IEEE committee report”, accepted by IEEE Transactions on Power Delivery, in press.

6. Yuan Liao, “Fault location for single-circuit line based on bus impedance matrix utilizing voltage measurements”, IEEE Transactions on Power Delivery, Vol. 23, No. 2, April 2008, pp. 609-617.

7. Yuan Liao, X Feng, and J Pan "Expanding unit commitment algorithm to include ancillary service modeling capability”, International Review of Electrical Engineering, Vol. 2, No. 4, August 2007, pp. 523-528.

8. Yuan Liao, “Unsynchronized fault location based on distributed parameter line model”, Electric Power Components & Systems, Vol. 35, No. 9, 2007, pp. 1061-1077.

9. T.S. Sidhu, J. Burnworth, A. Darlington, B. Kasztenny, Yuan Liao, et al, “Bibliography of relay literature, 2005 IEEE committee report”, IEEE Transactions on Power Delivery, Vol. 22, No. 2, April 2007, pp. 781-794.

10. Yuan Liao and Mladen Kezunovic, “Optimal estimate of transmission line fault location considering measurement errors”, IEEE Transactions on Power Delivery, Vol. 22, No. 3, July 2007, pp. 1335-1341.

11. Yuan Liao and S Elangovan, “Unsynchronized two-terminal transmission line fault location without using line parameters”, IEE Proceedings – Part C: Generation, Transmission and Distribution, Vol. 153, No. 6, November 2006, pp. 639-643.

12. Yuan Liao, “Fault location utilizing unsynchronized voltage measurements during fault”, Electric Power Components & Systems, vol. 34, no. 12, December 2006, pp. 1283 – 1293.

13. X Feng and Yuan Liao, “A new Lagrangian multiplier update approach for Lagrangian relaxation based unit commitment”, Electric Power Components & Systems, vol. 34, no. 8, August 2006, pp. 857 - 866.

14. Yuan Liao and J B Lee, “A fuzzy-expert system for classifying power quality disturbances”, International Journal of Electrical Power and Energy Systems, vol. 26, no. 3, March 2004, pp. 199-205.

15. Yuan Liao and J B Lee, “Component programming for power system software development”, KEEE International Transactions on Power Engineering, vol. 12A, no. 4, December 2002, pp. 145-152.

16. Mladen Kezunovic and Yuan Liao, “A novel software implementation concept for power quality study”, IEEE Transactions on Power Delivery, vol. 17, no. 2, April 2002, pp. 544-549.

17. Mladen Kezunovic and Yuan Liao, “A new method for classification and characterization of voltage sags”, Electric Power Systems Research Journal, vol. 58, no. 1, May 21, 2001, pp. 27-35.

18. Yuan Liao and S Elangovan, “Fault noise based approach to phase selection using wavelet transform based feature extraction”, Electric Machines and Power Systems, vol. 27, no. 4, 1999, pp. 389-398.

19. Yuan Liao and S Elangovan, “Improved symmetrical component based fault distance estimation for digital distance protection”, IEE Proceedings-Part C: Generation, Transmission and Distribution, vol. 145, no. 6, November 1998, pp. 739 - 746.

20. Yuan Liao and S Elangovan, “Digital distance relaying algorithm for first-zone protection for parallel transmission lines”, IEE Proceedings-Part C: Generation, Transmission and Distribution, vol. 145, no. 5, September 1998, pp. 531-536.

21. Yuan Liao and S Elangovan, “Data smoothing by B-spline wavelets for digital distance protection”, International Journal of Electrical Power and Energy Systems, vol. 20, no. 4, May 1998, pp. 282-286.

Research Projects

We are currently working on projects related to power quality monitoring and analysis, fault location, protection, and power system stability.

Research Sponsors

We gratefully acknowledge the following sponsors:

Tennessee Valley Authority (TVA), Electric Power Research Institute (EPRI), E.ON USA, KY EPSCOR, National Science Foundation (NSF).

Teaching

Dr. Yuan Liao has taught the following courses at the University of Kentucky

EE 537 Electric Power System Analysis

EE 415 Electric Machines

EE 599/699 Electric Power System Generation, Operation and Control

EE 599/699 Electric Power System Fault Analysis and Protection

Assistantship Positions

Currently, we have full assistantship positions available to Ph.D. candidates in the electric power system area. Interested students can send their resumes including scanned transcripts, GRE, and TOEFL scores to Dr. Yuan Liao at yliao@engr.uky.edu. A master degree is required. Note that GRE and TOEFL tests are mandatory for admission. The start date can be spring 2009 or fall 2009. The application deadline set by the graduate school is: June for spring and February for fall semester.

Last updated on August 8, 2008.