Dr. Kezunovic published a book on protective relay design

Authors: Mladen 9783319209180Kezunovic, Jinfeng Ren, Saeed Lotfifard
Published by Springer, 2016
ISBN 978-3-319-20919-7

Preface
This book has been written for university students, professionals in the area of protective relaying, and other interested individuals with minimum engineering skills to study the material on their own. To achieve this goal, the book has been written in an unconventional way: It uses a simulation tool called MERIT 2000, based on widely known MATLAB software, to offer hands-on experience in understanding and implementing protective relaying designs.

Many books on protective relaying have been published over the years, which provide an excellent background on power system faults and protective relaying principles. However, most of these books assume that the reader is interested in learning about relaying principles and on how protective relay products can be used to implement protective approaches for various power system apparatus.

This book takes a different approach: It assumes that the reader is interested in learning how the relays work, what the basic design principles are, and how an implemented design of a relay may be evaluated. With this goal in mind, the book tries to make the learning process a design experience wherein the reader starts using the software engineering tools (MATLAB) from the very beginning as the basic relay design principles are introduced. The book is not a substitute for a reference on the fundamentals of relaying but is rather a complementary source on the topic.

To provide a hands-on experience, the authors have provided MERIT 2000 software developed in MATLAB as a supplement to this book. The software has been in use since 2000 in laboratory assignments in courses at Texas A&M University.

To access book website click here.

Dr. Kezunovic selected for Review Panel of the NIST Physical Measurement Laboratory

mladen-150Dr. Kezunovic served on the Review Panel of the Physical Measurement Laboratory at the National Institute of Standards and Technology (NIST). The panel was charged to assess the scientific and technical work performed by the NIST Physical Measurement Laboratory. The assessment was based on reviewing technical reports and technical program descriptions prepared by NIST staff and visiting the facilities at the Physical Measurement Laboratory. Visit included technical presentations by NIST staff, demonstrations of NIST projects, tours of NIST facilities, and discussions with NIST staff. The panel prepared a report published by the National Academies Press in FY 2015 (link).

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More on the National Research Council can be found at the link and on the NIST Physical Measurement Laboratory web site.

Relay mis-operation detection based on time-synchronized field data

Dr. Kezunovic and Dr. Popovic co-authored a publication titled “Transmission line relay mis-operation detection based on time-synchronized field data” published in Electric Power Systems Research.

ABSTRACT: In this paper, a real-time tool to detect transmission line relay mis-operation is implemented. The tool uses time-synchronized measurements obtained from both ends of the line during disturbances. The proposed fault analysis tool comes into the picture only after the protective device has operated and tripped the line. The proposed methodology is able not only to detect, classify, and locate transmission
line faults, but also to accurately confirm whether the line was tripped due to a mis-operation of protective relays. The analysis report includes either detailed description of the fault type and location or detection of relay mis-operation. As such, it can be a source of very useful information to support the system restoration. The focus of the paper is on the implementation requirements that allow practical application of the methodology, which is illustrated using the field data obtained the real power system. Testing and validation is done using the field data recorded by digital fault recorders and protective relays. The test data included several hundreds of event records corresponding to both relay mis-operations and actual faults. The discussion of results addresses various challenges encountered during the implementation and validation of the presented methodology. [link]

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