Title :
Modeling a power transformer for investigation of digital protection schemes
Author :
Coury, Denis Viaicius ; Campos, Paulo Guidetti ; Tavares, Maris Cristina
Author_Institution :
Escola de Eng., Sao Paulo Univ., Brazil
Abstract :
A three-phase transformer model for the calculation of electromagnetic transients for differential protection studies is presented. The ATP-EMTP was chosen as a computer tool for modeling the following situations: internal faults; transformer energization and removal of external faults. An application of the methodology is exemplified for a 138/13.8 kV-25 MVA transformer, where some transient results are presented
Keywords :
power engineering computing; power system faults; power system transients; power transformer protection; software packages; 13.8 kV; 138 kV; 25 MVA; ATP-EMTP; computer simulation; differential protection; digital protection schemes; electromagnetic transients calculation; external faults removal; internal faults; methodology application; power transformer modelling; three-phase transformer model; transformer energization; Circuit faults; Current transformers; Phase transformers; Power system modeling; Power system protection; Power system relaying; Power system simulation; Power system transients; Power transformers; Protective relaying;
Conference_Titel :
Harmonics and Quality of Power Proceedings, 1998. Proceedings. 8th International Conference On
Conference_Location :
Athens
Print_ISBN :
0-7803-5105-3
DOI :
10.1109/ICHQP.1998.760183
