Title :
A coupled thermal and electrical soft sensor for ONAN distribution transformers
Author :
Najar, Sami ; Tissier, Jean-Franois ; Cauet, Sbastien ; Etien, Erik
Author_Institution :
R&D Eng., Itron, Poitiers, France
Abstract :
This paper presents coupled thermal and electrical modeling for a ONAN distribution transformer. Thermal model based on the IEC 60076-7 standard will lead to estimate the oil temperature of the transformer. Thermal parameters are determined using Levenberg/Marquardt algorithm. Electrical model based on KAPP model will determine the transformer leakage resistance and inductance evolutions. Variations of leakage impedance according to transformer temperature are highlighted leading to a global adaptive model.
Keywords :
IEC standards; electric impedance; electric resistance; inductance; transformer oil; IEC 60076-7 standard; KAPP model; Levenberg-Marquardt algorithm; ONAN distribution transformer; coupled thermal and electrical soft sensor modelling; inductance evolutions; leakage impedance; leakage resistance; oil temperature estimation; Inductance; Oil insulation; Power transformers; Resistance; Temperature; Temperature measurement; Temperature sensors; Thermal and electrical model; coupling model; distribution transformer; electrical parameters variation; parameters determination;
Conference_Titel :
Industrial Technology (ICIT), 2015 IEEE International Conference on
Conference_Location :
Seville
DOI :
10.1109/ICIT.2015.7125160
