| Title |
Compensation of Instantaneous Voltage Drop at AC Railroad System with Single-Phase Distributed STATCOM |
| Authors |
Jun-Sang Kim ; Seung-Hyuk Lee ; Jin-O Kim ; Jun-Kyoung Lee ; Hyun-soo Jung |
| Keywords |
Single-phase distributed-STATCOM ; Voltage drop ; Railroad feeding system |
| Abstract |
An AC electrical railroad system has rapidly changing dynamic single-phase load, and at a feeding substation, three-phase electric power is transformed to the paired directional single-phase electric power. There is a great difference in electrical phenomenon between the load of AC electrical railroad system and that of general power system. Electric characteristics of AC electrical railroad’s trainload are changed continuously according to the traction, operating characteristic, operating schedule, track slope, etc. Because of the long feeding distance of the dynamic trainload, power quality problems such as voltage drop, voltage imbalance and harmonic distortion may also occur to AC electrical railroad system. These problems affect not only power system stability, but also power quality deterioration in AC electrical railroad system. The dynamic simulation model of AC electrical railroad system presented by PSCAD/EMTDC is modeled in this paper, andthen, it is analyzed voltage drop for AC electrical railroad system both with single-phase distributed STATCOM(Static Synchronous Compensator) installed at SP(Sectioning Post) and without. |