| Title |
A Study on the Improvement of Fault Locator Technology for Neutral Point Grounding Auto Transformer Power Feeding System |
| Authors |
권정근(Jeong-Keun Kwon) ; 이종우(Jong-Woo Lee) |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.6.1031 |
| Keywords |
Fault Locator; Short Impedance; Fault Current; Fault Position Display; Overhead Contact Wire Power Feeding System; AT |
| Abstract |
In the event of a power feeding system failure, the railway operator institution must quickly identify and respond to the cause of the power feeding system failure and to recover from the failure. If the failure location of the power feeding system is not accurately identified, the power supply failure is repeated, and the train operation in the section is impossible. Therefore, a separate device is needed to accurately identify the failure section, and this device can quickly recover by indicating the failure location.
However, when an actual failure occurs, the accuracy of the positional expression of the currently operating automatic failure position display device (hereinafter referred to as a fault point expression device) caused confusion in recovery. Therefore, in this study, we intend to review improvement measures for short circuit impedance measurement, failure current measurement, and failure location indication that can reduce errors in high-fault expression devices. |