Design of an electronic power transformer

Author

Wrede, Holger ; Staudt, Volker ; Steimel, Andreas

Author_Institution

Inst. for Generation & Application of Electr. Energy, Ruhr-Univ., Bochum, Germany

Volume

2

fYear

2002

fDate

5-8 Nov. 2002

Firstpage

1380

Abstract

For the distribution of electrical energy in Germany, application-specific transformers with ratings of 110/20 kV, 110/10kV, 40 MVA, 50 Hz are typically in operation. Due to their weight, these transformers can only be transported with great expense (usually by rail). Therefore a considerable number of reserve transformers has to be held in stock in each distribution area, to guarantee power reliability to utility customers by quick replacement. To reduce assets, a universal, mobile and flexible (adjustable to different medium-voltage levels and truck movable) transformer reserve unit is desired by utility companies. The modular design of an electronic power transformer for this purpose is given in this paper. Based on power electronics, additional features like fast voltage regulation, reactive power compensation, ride-through capability etc. are described.

Keywords

compensation; frequency convertors; power convertors; power distribution reliability; power transformers; reactive power; voltage control; 10 kV; 110 kV; 20 kV; 40 MVA; 50 Hz; Germany; application-specific transformers; assets reduction; electrical energy distribution; electronic power transformer design; fast voltage regulation; medium-voltage levels; power reliability; reactive power compensation; ride-through capability; truck movable transformer reserve unit; Circuit topology; Consumer electronics; Dielectric liquids; Frequency conversion; Medium voltage; Power demand; Power electronics; Power transformers; Rails; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 02 [Industrial Electronics Society, IEEE 2002 28th Annual Conference of the]

Print_ISBN

0-7803-7474-6

Type

conf

DOI

10.1109/IECON.2002.1185477

Filename

1185477