EHV/HV autotransformers modeling for electromagnetic transients simulation of power systems

Author

Colla, L. ; Iuliani, V. ; Palone, F. ; Rebolini, M. ; Taricone, C.

Author_Institution

Eng. Dept., Terna S.p.A., Italy

fYear

2010

fDate

6-8 Sept. 2010

Firstpage

1

Lastpage

6

Abstract

Autotransformers are a widespread component in some transmission networks as the Italian one, mainly as they are an effective solution in interconnecting EHV to HV networks. Accurate autotransformers representation in electromagnetic transients studies can be very complex due to the non-linearity and frequency dependency of parameters. The used model is suitable to model transients up to few kHz and takes into account residual flux, hysteresis and EM field propagation through the core. The model is validated in the paper by means of full-scale tests on a 250 MVA-50Hz 400/135 ± 10% kV autotransformer.

Keywords

EMTP; autotransformers; electromagnetic fields; power system transients; transmission networks; EHV-HV autotransformers modeling; EM field propagation; apparent power 250 MVA; electromagnetic transients simulation; frequency 50 Hz; power systems; residual flux; transmission networks; voltage 135 kV; voltage 400 kV; Capacitance; Finite element methods; Integrated circuit modeling; Magnetic cores; Surges; Voltage measurement; Windings; Autotransformer; EMTP; SFRA; transients;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines (ICEM), 2010 XIX International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-4174-7

Electronic_ISBN

978-1-4244-4175-4

Type

conf

DOI

10.1109/ICELMACH.2010.5607995

Filename

5607995