Title :
Surge Modelling of Transformer Using Matlab-Simulink
Author :
Bhuyan, Kaveri ; Chatterjee, Saibal
Author_Institution :
Central Inst. of Technol., Kokrajhar, India
Abstract :
This paper aims to validate the surge modelling of a transformer using Matlab-Simulink using an electromagnetic model and thereby ascertaining the model accuracy. The studies cover winding responses to both full and chopped standard lightning impulses with time to chop varying over a wide range. Modelling was carried out using the design data of a 3 MVA, 33/11 kV, 3-phase, 50 Hz, Dyn 11 Transformer whose 33 kV mesh connected winding was considered to be subjected to standard full wave (1.2/50 ¿s) and chopped impulses chopped at 3 ¿s, 8 ¿s and 15 ¿s. The mathematical model considered takes into account the series and shunt capacitances and inductances of the winding elements, including the effect of their mutual inductances. The Simulation compared with the experimental results shows the validity of the Surge modelling of the transformer.
Keywords :
mathematics computing; power transformers; surge protection; transformer windings; Matlab-Simulink; apparent power 3 MVA; electromagnetic model; frequency 50 Hz; lightning impulse; mathematical model; mutual inductance; series capacitance; shunt capacitance; time 3 mus to 15 mus; transformer surge modelling; voltage 11 kV; voltage 33 kV; winding inductance; Computer languages; Electromagnetic modeling; Iron; Lightning; Mathematical model; Power system transients; Power transformer insulation; Power transformers; Surges; Windings;
Conference_Titel :
India Conference (INDICON), 2009 Annual IEEE
Conference_Location :
Gujarat
Print_ISBN :
978-1-4244-4858-6
Electronic_ISBN :
978-1-4244-4859-3
DOI :
10.1109/INDCON.2009.5409414
