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Doctoral Thesis
Author of thesis: Ing. Petr Blažek, Ph.D.
Acad. year: 2025/2026
Supervisor: doc. Ing. Václav Zeman, Ph.D.
Reviewers: doc. Ing. Ladislav Pospíchal, CSc., doc. Mgr. Karel Slavíček, Ph.D.
This dissertation addresses the issue of cybersecurity in smart grids, with a focus on data communication and the protection of the transmission and distribution infrastructure. In response to the increasing digitalization and integration of operational technologies, the work aims to design a realistic sandbox architecture for research, testing, and training in the field of cybersecurity for power systems. The main outcome is a modular and scalable test environment that combines physical, emulated, and virtualized components, enabling simulation of substation operations, modeling of cyberattacks, and validation of mitigation measures without endangering real infrastructure. The design is based on a systematic analysis of the communication architecture in smart grids using IEC 61850 and IEC 60870 standards, extended with traffic modeling through queueing theory (M/M/1, M/D/1, MMPP). The solution includes a multi-layered security analysis based on STRIDE and MITRE ATT&CK, identifying vulnerabilities in protocols and devices. The results were compared against the requirements of standards such as IEC 62351, IEC 62443, NIST 800-82, and ENISA recommendations. The resulting platform supports effective and technically faithful testing of high-load scenarios, hands-on training of technical staff, and the generation of representative datasets for further research. The dissertation contributes to strengthening the resilience of electrical power systems against cyber threats and supports the development of applied security in the domain of critical infrastructure.
critical infrastructure, cybersecurity, distribution system, IEC 60870-5-104, IEC 61850, IEC 62351, IEC 62443, MITRE ATT&CK, NIST 800-82, smart grid, STRIDE, transmission system
Date of defence
03.02.2026
Result of the defence
Defended (thesis was successfully defended)
Process of defence
Disertant jasně a stručně přednesl vědecké výsledky práce. Zodpověděl všechny dotazy členů komise a komise byla s odpověďmi spokojena.
Language of thesis
Czech
Faculty
Fakulta elektrotechniky a komunikačních technologií
Department
Department of Telecommunications
Study programme
Teleinformatics (DKC-TLI)
Composition of Committee
prof. Ing. Zdeněk Smékal, CSc. (předseda) doc. Ing. Martin Kyselák, Ph.D. (člen) doc. Ing. František Urban, CSc. (člen) prof. Dr. Ing. Zdeněk Kolka (člen) doc. Ing. Radek Fujdiak, Ph.D. (člen) prof. Ing. Jiří Mišurec, CSc. (člen) doc. Ing. Ladislav Pospíchal, CSc. (člen) doc. Mgr. Karel Slavíček, Ph.D. (člen)
Supervisor’s reportdoc. Ing. Václav Zeman, Ph.D.
Reviewer’s reportdoc. Ing. Ladislav Pospíchal, CSc.
Reviewer’s reportdoc. Mgr. Karel Slavíček, Ph.D.
Responsibility: Mgr. et Mgr. Hana Odstrčilová