Compensation for the negative-sequence currents of electric railway based on SVC

Author

Guiping, Zhu ; Jianye, Chen ; Xiaoyu, Liu

Author_Institution

Dept. of Electr. Eng., Tsinghua Univ., Beijing

fYear

2008

fDate

3-5 June 2008

Firstpage

1958

Lastpage

1963

Abstract

As a classic unbalanced load, the traction engines of the electric railways result in negative-sequence currents(NSC) in power systems, which cannot be ignored in most cases. SVC is considered as an effective method to reduce or even eliminate NSC, as well as some other power quality problems, such as reactive power compensation. Calculation formulae of NSC of two kinds of transformers are formed firstly in this paper. Then the mechanism of NSC compensation by SVC is discussed. Simulations by PSCAD of the system are followed. The results show that SVC is efficient to compensate NSC.

Keywords

power supply quality; railways; static VAr compensators; traction power supplies; PSCAD; SVC; electric railway; negative-sequence currents; power quality problems; power systems; static VAr compensators; traction engines; transformers; Engines; Impedance; PSCAD; Phase transformers; Power quality; Power system harmonics; Power system measurements; Rail transportation; Reactive power; Static VAr compensators;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2008. ICIEA 2008. 3rd IEEE Conference on

Conference_Location

Singapore

Print_ISBN

978-1-4244-1717-9

Electronic_ISBN

978-1-4244-1718-6

Type

conf

DOI

10.1109/ICIEA.2008.4582862

Filename

4582862