The book "Electronic devices of relay protection and automation in traction power supply systems" is an important and relevant publication created by a team of authors that immerses the reader in the world of modern technologies and engineering solutions used in the field of traction power supply . This is not just a textbook, but a real encyclopedia, which collects knowledge, experience and practical recommendations necessary for specialists working in the field of electrical engineering and energy. First of all, this edition will be interesting for students and graduate students of technical universities, as well as young professionals seeking to deepen their knowledge in the field of relay protection and automation. However, the book will also find a response from experienced engineers and practitioners who want to be aware of the latest developments and trends in this rapidly developing field. Readers interested in the topics of power supply, automation and protection of electrical systems will find in it a lot of useful information. The book covers a wide range of topics, ranging from the basics of relay protection to modern approaches to process automation in traction power supply systems. The authors consider in detail the principles of operation of electronic devices, their design and functional features, as well as methods of diagnosis and maintenance. An important aspect is that the publication pays attention not only to the theory, but also to the practical aspects of the application of technology, which makes it an indispensable reference for engineers in the workplace. One of the key themes of the book is the safety and reliability of relay protection systems. The authors emphasize the importance of the correct choice and configuration of protective devices, which is critical for preventing emergencies and ensuring the smooth operation of energy systems. The reader will be able to learn about modern methods of risk analysis and assessment, as well as about new technologies that help increase the level of security. The style of the authors is distinguished by clarity and accessibility, which makes it easy to assimilate even the most complex concepts. They use examples from practice, which makes the material more clear and understandable. The book is replete with illustrations and diagrams that help visualize the processes and devices described. This is especially important for those who prefer visual perception of information. In addition, it is worth noting that the team of authors includes recognized experts in the field of relay protection and automation. Their experience and knowledge make the book not only theoretically sound, but also practically useful. This edition will be an indispensable assistant for anyone who wants to stay on the cutting-edge technologies and apply them in their work. If you are looking for literature that will help you understand the intricacies of relay protection and automation, then “Electronic relay protection and automation devices in traction power supply systems” is what you need. This book will not only expand your knowledge, but also inspire new ideas and solutions in your professional activities. Do not miss the opportunity to immerse yourself in the world of modern technologies and discover new horizons in the field of energy supply!