Iranian Journal of Electrical and Electronic Engineering
IJEEE
Engineering & Technology
http://ijeee.iust.ac.ir
18
agent2
1735-2827
2383-3890
10.22068/IJEEE
en
jalali
1396
3
1
gregorian
2017
6
1
13
2
online
1
fulltext
en
Modelling and Simulation of a Transformer With Inter-turn Fault Including Saturation Effect and Variable Fault Parameters
1-modeling of Electrical Machinery
modeling of Electrical Machinery
Research Paper
Research Paper
<p style="text-align: justify;">This investigation deals with a mathematical model for a distribution transformer including saturation effect. To this end, the equations related to a three phase transformer are specified and the effect of an inter-turn fault is included. Naturally by applying an inter-turn fault the inductance and resistance matrix will change. Thus, unknown quantities of inductances and resistances for completing the matrix are calculated and the inputs, outputs and state variables are specified. All the equations will be rewritten in terms of state variables, subsequently saturation effect is added to the model. Finally the block diagram of the specified model based on the obtained equations are designed and the ultimate model is simulated. The saturation effect, added to the mathematical model and also the variable fault parameters are known as two significant contributions which distinguish this study from other investigations. Various results obtained from the simulation of the final model confirm the changes in the behavior of faulty transformer such as: a large circulating current flowing in the shorted turns, lower impact on terminal voltages and currents, a sudden increase in current flowing in the primary winding, asymmetrical flux distribution and inverse proportion of the fault severity and the limiting resistor.</p>
Inductance, Inter-turn, Modelling, Saturation Effect, Transformer.
170
182
http://ijeee.iust.ac.ir/browse.php?a_code=A-10-365-7&slc_lang=en&sid=1
M.
Samami
mehdisamami63@gmail.com
`180031947532846005393`

180031947532846005393
No
Mah Taab Caspian Electricity Generation Company, Nowshahr Power Plant, Nowshahr, Iran.
H.
Yaghobi
yaghobi@semnan.ac.ir
`180031947532846005392`

180031947532846005392
Yes
Faculty of Electrical and Computer Engineering, Semnan University, Semnan
M.
Niaz Azari
miladniazazari@mazust.ac.ir
`180031947532846005394`

180031947532846005394
No
Department of Electrical Engineering, University of Science and Technology of Mazandaran, Behshahr, Iran