Open AccessOn single pole instrument voltage transformer overheating
Author(s) -
František Janíček,
Lukáš Český,
Filip Skudřík
Publication year - 2021
Publication title -
journal of electrical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.191
H-Index - 27
eISSN - 1339-309X
pISSN - 1335-3632
DOI - 10.2478/jee-2021-0004
Subject(s) - overheating (electricity) , transformer , limiting , voltage , electromagnetic coil , electrical engineering , distribution transformer , engineering , mechanical engineering
The paper deals with calculation of overheating of a voltage instrument transformer used in medium voltage substations. Calculation of the primary and secondary windings is compared with measured values. These values are evaluated according to IEC 618691:2007, IEC 61869-3:2011 and IEC 60085:2007. In evaluation we focused on the state 1.9 × nominal voltage and thermal limiting output state. The article also compares the results for various parameters of instrument transformers that are necessary for clarification of calculation.