JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on the Overcurrent Relay Modeling and Protective Coordination for Overload in Domestic AC Electrical Railway System
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on the Overcurrent Relay Modeling and Protective Coordination for Overload in Domestic AC Electrical Railway System
Kim, Hyun-Dong; Cho, Gyu-Jung; Huh, Seung-Hoon; Kim, Chul-Hwan;
  PDF(new window)
 Abstract
In this paper, modeling of overcurrent relay(OCR) to protect domestic AC electric railway Auto Transformer(AT) feeding system and operation characteristic analysis on overload condition are described. The target system of this paper is actual site where overload trip of circuit breaker occurs frequently. Because this AT feeding system is made of parallel single track which had a load(electric train) respectively, and is connected with only T phase of Scott Transformer. In addition, this system has been feeding 66kV voltage by KEPCO, not 154kV. We focus on protective coordination of Scott Transformer primary side and secondary side OCR for Korea single track AC electrical railway system in operation currently. We modeled single track AT feeding system and OCR. Also we performed faults and overload analysis for verification of OCR's setting values and system modeling. To analyze above mentioned research, we used PSCAD/EMTDC software tool.
 Keywords
AT feeding system;OCR;Scott transformer;PSCAD/EMTDC;
 Language
Korean
 Cited by
 References
1.
Jung Cheol Kim, Analysis of power supply system and understanding of the Korean electric railway, Kidari, 2008.

2.
Baik Kim, "Electric railway power engineering", Kidari, 2005.

3.
T.Uzuka, Akira Horiguchi, Takemi Akita, "New type of feeding transformer for AC railway traction system", International Conference on Power Electronics Systems, pp800-805, Nov. 2009.

4.
Korea Rail Network Authority, "Railway design guideline KR E-02090", 2013.

5.
IEC standards, "IEC standard 60255-151 Measuring relays and protection equipment", 2009.

6.
Korea Electric Power Corporation, "Relay setting guideline of consumer", 2012.

7.
Dong Woog Choo, Jae Chul Kim, Yong Chul Jung, Yong Ju Jun, Seong Jeong Lim, "A study on modified algorithm to operating train simulation of AT feeding systems", The Korean Institute of Electrical Engineers, 2001.