Author(s)

Yaxin Lu, Aihong Tang, Hongsheng Zhao, Qiushi Xu, Shuyuan Zhang

Corresponding Author

Yaxin Lu

ABSTRACT

In recent years, urban rail transit has become one of the most effective ways to solve the problem of urban traffic congestion because of its advantages of fast, efficient, safe and comfortable, energy saving and environmental protection. However, Electric locomotive, as the core vehicle of railway transportation, will bring some negative effects when it is connected to power system, such as reducing power flow of lines, reducing power quality of power grid, etc. Distributed static series compensator (DSSC) is one of the flexible AC transmission system (FACTS) technologies. It can adjust the power flow flexibly and quickly by changing the impedance of transmission lines, so as to improve the stability and reliability of power system and improve the congestion of power transmission. Firstly, in this paper, the structure and principle of DSSC are analyzed. Secondly, taking Shaoshan 4 electric locomotive in China as an example, its simulation model is analyzed and established. Finally, DSSC is connected to the Electric locomotive grid-connected system, and simulation experiments are carried out to verify the practicability of DSSC in power flow control of grid-connected electric locomotive.

KEYWORDS

Distributed Static Series Compensator, Flexible AC Transmission System, Grid-connected Electric Locomotive, Power Flow Control