| Title |
A Study on the Correction Technique of Fault Location of AC Railway using Linear Spline Interpolation Method |
| Authors |
신동혁(Dong-hyuk Shin) ; 김성철(Seong-Cheol Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2021.70.4.707 |
| Keywords |
AC Railway; Linear Spline Interpolation; Fault Locator; Fault Location; Boosting Current |
| Abstract |
In this paper, we compare and analyze the characteristics of the boosting current ratio, which occurs differently depending on the ground configuration of the traction line, to derive the main causes of the fault location error. To this end, the Power system analysis program (PSCAD/EMTDC) is utilized to derive the characteristics of the boosting current ratio due to the other-line absorption phenomenon through modeling and simulation. Furthermore, to derive problems from existing calibration methods, we analyze facial expression errors by classifying single linear interpolation calibrations into multiple cases. We present a correction technique using linear spline interpolation to improve the accuracy of the fault point representation even under the nonlinear boost current ratio characteristic conditions due to integrated ground and other line absorption phenomena. |