대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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- Pages.217-219
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- 2007
직류전기철도 전식대책 실증실험(2) 속응형 정전위 정류기
Field Test of Mitigation Methods for Stray Currents from DC Electric Railroad(2) Rapid Potential-Controlled Rectifier
- Ha, Yoon-Cheol (Korea Electrotechnology Research Institute) ;
- Ha, Tae-Hyun (Korea Electrotechnology Research Institute) ;
- Bae, Jeong-Hyo (Korea Electrotechnology Research Institute) ;
- Lee, Hyun-Goo (Korea Electrotechnology Research Institute) ;
- Kim, Dae-Kyeong (Korea Electrotechnology Research Institute) ;
- Choi, Jeong-Hee (Korea Electrotechnology Research Institute)
- 발행 : 2007.10.25
초록
With the wide spread of direct current(DC) electric railroads in Korea, the stray current or leakage currents from negative return rails become a pending problem to the safety of nearby underground Infrastructures. The most widely used mitigation method for this interference is the stray current drainage method, which connects the underground metallic structures to the rails with diodes (polarized drainage) or thyristor (forced drainage). This method, however, inherently possesses some drawbacks such as an increase of total leakage torrents from rails, expansion of interference zone, etc. In order to resolve these drawbacks, we developed a rapid potential-controled rectifier and applied to a depot area where stray current inference is very severe. The effect of this method was analyzed from the field tell data and we suggest this method can be an excellent alternative to the drainage-bond-based mitigation methods.
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