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Management of the energy transmission system polygon
Bohačík, Antonín ; Musil, Petr (referee) ; Blažek, Petr (advisor)
The diploma thesis is focused on the creation of a control interface for a polygon simulating the electrical distribution network of the Czech Republic, where communication between substations is realized by IEC 60870-5-104 protocol. The theoretical part of the thesis explains the basic principles, properties and possibilities of communication standards IEC 60870 and IEC 61850. The next part is focused on the actual implementation and subsequent implementation of the control interface, including the implementation of the IEC 61850-80-1 module for data transfer between the mentioned standards. The last part describes the created behavior scenarios or the analysis of communication itself.
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Simulator of SCADA protocols
Bohačík, Antonín ; Mlýnek, Petr (referee) ; Blažek, Petr (advisor)
This work is focused on creation of fully functional communication generator of IEC 60870-5-104 protocol. The theoretical part explains in detail the basic principles, properties and possibilities of communication standards DNP3, IEC 60870 and IEC 61850. The next part is focused on the analysis of communication and implementation of this communication in the PQ MEg44PAN device. The last part deals with the configuration of Raspberry Pi 3 devices and the communication emulation of the IEC 60870-5-104 protocol. All programs were written and tested using the Clion development environment.
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Energy testbed security
Zatloukal, Zdeněk ; Blažek, Petr (referee) ; Bohačík, Antonín (advisor)
The topic of the thesis is focused on the energy testbed security. The main objective of the work is the implementation of secure data communication of IEC 60870-5-104 protocol in the transmission system testbed according to the standard ČSN EN 62351. Furthermore, a comparison of secured and unsecured communication is included with testing of selected vulnerabilities. Subsequently, control functions related to testbed security were implemented in the control interface.
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Low-code / No-code rule based engine for positioning data
Vychodilová, Natálie ; Bohačík, Antonín (referee) ; Juráň, Radovan (advisor)
This thesis is focused on the design and implementation of a software system intended to eliminate programming needs for selected process problems. This system allows the user to create rules over positional data. It addresses design of the server and client parts of the application, design of the database and user interface. The design of the web application is based on knowledge of UWB technology and RTLS systems.
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Energy protocol recognition using artificial intelligence
Racka, Jan ; Holasová, Eva (referee) ; Bohačík, Antonín (advisor)
The master's thesis focuses on classification of secure network traffic of energy protocols using convolutional neural network. The theoretical part discusses the issues of neural networks and their use in network traffic classification. In addition, the energy protocols Modbus, IEC 104, TASE.2, DNP3, GOOSE, SMV, MMS, and the standard DLMS/COSEM are analyzed, including their security. In the subsequent practical part, a convolutional neural network is implemented to recognize the mentioned protocols in their secured versions. Unsecured traffic records from publicly available repositories and from traffic simulators of the mentioned protocols, and captured data in an energy polygon were used to train the neural network. TLS and GOOSE convertotrs were developed to obtain secured traffic, which ensured that the protocols using same security mechanisms were secured uniformly. The resulting secured traffic was preprocessed into a two-dimensional format and was presented as input to the neural network for learning. The input image was created from the application parts of packets of the energy protocol session and formatted to the 28 × 28 byte image. The resulting network accuracy on the test data was 95,75 %. Furthermore, the network was tested on real traffic in an energy polygon, where it correctly recognized several protocols. A classifier for the operational state of a station that communicates using IEC 104 secured with TLS was developed as part of a partial objective of the thesis. The task of the classifier was to recognize, using encrypted messages, the state of the tested station. The classifier consisted of a convolutional neural network, which were usinga two-dimensional image consisting of information from a sequence of five consecutive packets as input. The information consisted of the interarrival time between packets, the length of the TLS encrypted application data, and the encrypted application data up to size 64 B. To obtain enough data to train the convolutional network, a simulator of characteristic messages for each state was developed. The classifier showed an accuracy of 43,05 % on the test data after the learning phase. Next, the classifier underwent testing on the test stations, where it was able to distinguish normal state of the state from events, but could not distinguish certain events of similar nature from each other.
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Energy testbed security
Zatloukal, Zdeněk ; Blažek, Petr (referee) ; Bohačík, Antonín (advisor)
The topic of the thesis is focused on the energy testbed security. The main objective of the work is the implementation of secure data communication of IEC 60870-5-104 protocol in the transmission system testbed according to the standard ČSN EN 62351. Furthermore, a comparison of secured and unsecured communication is included with testing of selected vulnerabilities. Subsequently, control functions related to testbed security were implemented in the control interface.
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Polygon Scenarios Of The Czech Distribution Network
Bohačík, Antonín
This work is focused on the design and implementation of communication scenarios to createdpolygon that simulates the data communication of the transmission network of the Czech Republic.Scenarios represent usual but also unusual situations in which real stations of the transmissionsystem may be. Furthermore, the assumptions are described here to simulate the created scenariosor the criteria and ranges that the station must cover during the simulation.
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Management of the energy transmission system polygon
Bohačík, Antonín ; Musil, Petr (referee) ; Blažek, Petr (advisor)
The diploma thesis is focused on the creation of a control interface for a polygon simulating the electrical distribution network of the Czech Republic, where communication between substations is realized by IEC 60870-5-104 protocol. The theoretical part of the thesis explains the basic principles, properties and possibilities of communication standards IEC 60870 and IEC 61850. The next part is focused on the actual implementation and subsequent implementation of the control interface, including the implementation of the IEC 61850-80-1 module for data transfer between the mentioned standards. The last part describes the created behavior scenarios or the analysis of communication itself.
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Simulator of SCADA protocols
Bohačík, Antonín ; Mlýnek, Petr (referee) ; Blažek, Petr (advisor)
This work is focused on creation of fully functional communication generator of IEC 60870-5-104 protocol. The theoretical part explains in detail the basic principles, properties and possibilities of communication standards DNP3, IEC 60870 and IEC 61850. The next part is focused on the analysis of communication and implementation of this communication in the PQ MEg44PAN device. The last part deals with the configuration of Raspberry Pi 3 devices and the communication emulation of the IEC 60870-5-104 protocol. All programs were written and tested using the Clion development environment.
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