Three-phase power transformer modelling in AC/DC traction substations

Cornelia A Bulucea,Nikos E Mastorakis,Doru A Nicola,Carmen A Bulucea,N Mastorakis,V Mladenov,A Bulucea

doi:10.1051/matecconf/201929201006

Abstract

Three-phase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings. Since the efficiency standards can be expressed in terms of electrical efficiency, in an attempt to improve the transformer efficiency, in this study an enhancement of three-phase power transformer modelling with space phasors is presented. There are established the equations with space phasors of the three-phase transformer with symmetrical compact core. This equations system can be used to analyze the dynamic regimes of three-phase transformers. In this paper have been analyzed some aspects of three-phase power transformer operation in a AC/DC traction substation.

Highlights

Nowadays, because of economic and business growth, standards of life and development of civilization are too often interpreted in correlation with the use of electricity, and the demand of electricity is constantly rising
Threephase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings [1,2,3,4]
Since the efficiency standards can be expressed in terms of electrical efficiency depending on load characteristics, in an attempt to improve the transformer efficiency, below an enhancement of three-phase power transformer modelling with space phasors is presented [3,4]

Summary

Introduction

Because of economic and business growth, standards of life and development of civilization are too often interpreted in correlation with the use of electricity, and the demand of electricity is constantly rising. Threephase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings [1,2,3,4]. The mathematical modeling is a complex process and entails a large element of compromise the interacting systems in the real world can be studied identifying the most important interrelations of the systems [2,3,4,5,6,7]. Since the efficiency standards can be expressed in terms of electrical efficiency depending on load characteristics, in an attempt to improve the transformer efficiency, below an enhancement of three-phase power transformer modelling with space phasors is presented [3,4]

Three-phase transformer modelling with space phasors

Diagrams of currents

Currents through diodes

Currents through secondary windings

Line currents in the primary

Discussion and Conclusion