This book is devoted to one of the main problems of modern electrical power engineeringpower transformer diagnostics. The first three chapters discuss the fundamentals: The first chapter presents the physical reasons for power transformers' failures and the technical and economic consequences of disruption of the normal operation. The second chapter reviews the standard technologies for monitoring the state of the high-voltage transformers. The third chapter tells about monitoring the condition of transformer windings based on the pulse method.

The fourth chapter presents the technologies for transformer windings condition controlled by means of nanosecond pulses. The stages of improving the pulsed method based on a short probing pulse of the nanosecond range, the results of experiments on identifying the radial and axial displacements of the winding, studies of the effect of the duration and shape of the probing pulse on the sensitivity of the diagnostic procedure, and the stages of developing a mathematical as well as physical model of a power transformer are consistently presented.

Tackles one of the main problems of modern electrical power engineering: transformers and their failure Reviews the standard technologies for monitoring the state of the high-voltage transformers Offers a new technology for transformer windings condition control by means of nanosecond pulses

Autorentext
Ushakov Vasiliy Yakovlevich—Doctor of Technical Sciences, Professor, Honoured Worker of Science and Technology of Russia. Professor Vasily Ya. Ushakov received Ph.D. degree in 1965 and Doctor of Science degree in 1973 from Tomsk Polytechnic University (TPU). Vasily Ya. Ushakov is Well-Known Expert in high-voltage engineering, particularly in the area of electric breakdown of condensed medium and insulation of pulsed power equipment. Now he is interested in problems of digitalization of the power systems, increase of energy production, transmission and consumption effectiveness, and solution methods of the main problems associated with energy supply of the world population. He has published about 400 scientific articles and 24 monographs and textbooks. From 1974 to 1981 he was Head of high-voltage department of Tomsk Polytechnic University (TPU), from 1979 to 1992 he was Director of High-Voltage Research Institute at TPU, and from 1992 to 2001—Vice-Rector for research of TPU. Rakhmonov Ikromjon Usmonovich—Doctor of Technical Sciences, is Professor. He is Head of the Department of "Power Supply" at Tashkent State Technical University. He is conducting research in the fields of increasing the efficiency of energy consumption in industrial enterprises. Approximately 200 research works have been published. This includes 6 monographs and 80 scientific articles, out of which 52 have been published in prestigious international scientific journals, and 47 have been published in journals and proceedings within the Scopus database. Under the scientific supervision of I.U. Rakhmonov, 8 Ph.D. dissertations were successfully defended, and currently, 4 Ph.D. students and 6 independent researchers are conducting their research under his guidance. Alisher Bakhramzhonovich Askarov has received the M.Sc. and Ph.D. degrees at National Research Tomsk Polytechnic University, Russia, in 2018 and 2023, respectively. Currently he is an Associate Professor of Division for Power and Electrical Engineering, School of Energy and Power Engineering, National Research Tomsk Polytechnic University. His research focuses on power system modeling, power system automation analysis, IEC61850-based digital substations, and development of power converter control algorithms. The results of Dr. Alisher B. Askarov academic work are presented in over 50 scientific papers. H-index in Scopus database is 13. Nikitin Dmitriy Sergeevich—Ph.D., is Associate Professor in National Research Tomsk Polytechnic University. His research interests focus on high voltage, electric discharge, and plasma technologies. New technology for producing structural and functional materials, which is based on pulsed electric discharge, is the result of his experimental work. He provides special courses for bachelor and master teaching specialization "Digital Power Engineering" and "Power networks and stations". New plasma devices and methods for obtaining materials have been designed and engineered. Now D. S. Nikitin is Project Leader and Main Performer in the projects of the Russian Science Foundation. He has published more than 100 scientific articles and textbooks (including more than 20 articles in scientific journals Q1-Q2). H-index in Scopus database is 12. Under the scientific supervision of D. S. Nikitin, 2 Ph.D. students are conducting their research.

Inhalt
Failure reasons of power transformers.- Traditional technologies for condition monitoring of high-voltage transformer.- Diagnostics of the condition of transformer windings by probing pulses of microsecond duration.- Diagnostics of the transformer winding condition by probing pulses of nanosecond duration.