National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Primary testing of the protection relays
Macek, Vratislav ; Topolánek, David (referee) ; Toman, Petr (advisor)
The main subject of this bachelor’s thesis is the creation of laboratory task on the issue of primary injection testing of the protection relays. The thesis is made up of two parts: theoretical and practical. In theoretical part there are information concerning the issue of protecting. One of them the meaning and relay function, requirements applicable on them, failure states, which may arise on the device operation, description of instrument transformers and methods of testing relays. In practical part is created laboratory task on the issue of primary injection testing of overcurrent relay, of which will demonstrate the influence of load current transformer to its function. In task are used Overcurrent and Earth-fault protection REJ 525A and measuring instrument Omicron CPC 100.
Design of protection relays of small water power plant
Hudec, Jiří ; Paar, Martin (referee) ; Toman, Petr (advisor)
This Bachelor thesis deals with proposal of small hydro power station protection. The first part focuses on failure states and basic types of protection. The next part explains protection of generators. The last part provides a particular solution of small hydro power station protection.
Primary testing of the protection relays
Macek, Vratislav ; Topolánek, David (referee) ; Toman, Petr (advisor)
The main subject of this bachelor’s thesis is the creation of laboratory task on the issue of primary injection testing of the protection relays. The thesis is made up of two parts: theoretical and practical. In theoretical part there are information concerning the issue of protecting. One of them the meaning and relay function, requirements applicable on them, failure states, which may arise on the device operation, description of instrument transformers and methods of testing relays. In practical part is created laboratory task on the issue of primary injection testing of overcurrent relay, of which will demonstrate the influence of load current transformer to its function. In task are used Overcurrent and Earth-fault protection REJ 525A and measuring instrument Omicron CPC 100.
Design of protection relays of small water power plant
Hudec, Jiří ; Paar, Martin (referee) ; Toman, Petr (advisor)
This Bachelor thesis deals with proposal of small hydro power station protection. The first part focuses on failure states and basic types of protection. The next part explains protection of generators. The last part provides a particular solution of small hydro power station protection.

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