Title :
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
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;
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
DOI :
10.1109/ICIEA.2008.4582862
