The book "Design, Modeling and Evaluation of Protective Relays for Power Systems" offers a comprehensive and practical introduction to digital protective relays for power supply systems. It covers the theoretical foundations of how protective relays operate and imparts the necessary engineering knowledge and tools to successfully design them. Additionally, it provides valuable insights into the behavior of relays under practical conditions. Readers will have the opportunity to develop a deep technical understanding of the operation, design, and performance of relays. Alongside a detailed theoretical coverage, the book also includes a manual supplemented with software that offers numerous practical examples in MATLAB. It is a valuable resource for laboratories in the field of protective relays and for self-learners, as it provides laboratory experiments that are not available elsewhere. The book is suitable for advanced courses in digital relays as well as in troubleshooting and protection of power supply systems, and it serves as a useful source for professionals in the utility industry, including relay designers.