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전차선로시스템의 순환전류에 대한 안정성 향상에 관한 고찰
김인철(In-chol Kim),강승욱(Seung-Wook Kang) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.5
In these days, Korea Railway apply simple catenary system to general lines and high speed lines of Korea Electric Railway. Circulation Current in catenary system frequently bring undesirable consequences. Namely, the Connector wire has many problems according to a flow of excessive circulation (or traction current) and a sudden rise of temperature on catenary when electric car or locomotive is running in high speed. The occurrence of events by the load increasement do considerable damages to peoples, organizations and systems. In this paper, we proposed the improved changes on the catenary system of a improvement and change of a messenger wire protector, improvement of connector wire,s institution angle and of a replacement the connector wire with a dropper A case of Circulation Current continually has broken out in Yongdungpo Electric Office's own bailiwick. By or through the medium of these obstacles, we have further use of many studies and considering countermeasures. Therefore, we have to deal with the question in design and execution of catenary system for High Speed Railway because we will spend a lot of time and more money for maintenance than for construction of that.
박영(Young Park),조용현(Cho Hyeon Young),김형철(Hyungchul Kim),이기원(Kiwon Lee),박찬배(Chanbae Park),김인철(In-Chol Kim) 한국철도학회 2009 한국철도학회 학술발표대회논문집 Vol.2009 No.11월
In response to increasing interest in speed up of overhead catenary systems, various measurement systems have been developed to evaluate interaction between a contact wire and a contact strip. Contact force, electric arc, and dynamic stagger between overhead contact wire and contact strip are examples of several existing methods for assessment of current collection performance. Additionally, dynamic uplift and strain of contact wire have to be considered, when a pantograph moves at a registration arm. This paper introduces criteria on stability and performance assessment related with speed enhancement for current collection system in electric railway. Tolerance values and measurement techniques of measured items such as contact wire dynamic, contact force, and contact wire uplift were widely mentioned.
김인철(In-Chol Kim),최규형(Kyu-Hyoung Choi) 대한전기학회 2010 전기학회논문지 Vol.59 No.1
A measurement system of contact force between overhead contact line and pantograph of train is developed which measures the contact force by using four sets of full-bridge strain gauges instead of load cells and accelerometers. The sensors are installed on the pan head of pantograph and the measured data from the sensors are transmitted to a server system in the train by way of wireless Lan. This configuration of the measuring system makes it easy to install on the trains without any alteration of train system. The measurement system is applied to KTX on the Kyungbu high speed line, and the measured contact force data shows good agreement with those measured by load cell and accelerometers. The waveform of the contact force between overhead contact line and pantograph contains essential information about their conditions. The proposed measurement system can probe any defects on overhead contact lines with train running at high speed, which will be a powerful solution for the maintenance of long-distance overhead contact lines.
교류급전시스템 8단자망 모델에 의한 고조파해석에 관한 연구
김인철(Kim In-Chol),이병곤(Byeong-Gon Lee),강승욱(Seung-Wook Kang) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.10
전철 급전시스템의 해석을 위해 레일을 고려한 단자망 회로를 모델링 하였다. 8단자 회로망으로 전차선로, AT변압기, 스코트변압기, 전원계통, 고조파 차량을 모델링 한후 고조파확대율 해석을 하였다.
김인철(In-Chol Kim),강승욱(Seung-Wook Kang) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.5
전철 급전시스템의 해석을 위해 레일을 고려한 단자망 회로를 모델링 하였다. AT 급전방식의 전차선로는 일반적으로 급전선, 전차선, 조가선, 레일, 가공보호선, 접지선으로 구성되어 있다. 전기적으로 연결된 도체는 하나의 도체군으로 하고 급전선군, 전차선군(전차선+조가선), 레일군(레일+가공보호선+접지선)으로 모델링 하였다. 이를 바탕으로 전차선로, AT변압기, 스코트변압기, 전원계통, 차량을 모델링 하였다.
김형준,박영,조용현,조철진,김인철,Kim, Hyung-Jun,Park, Young,Cho, Yong-Hyeon,Cho, Chul-Jin,Kim, In-Chol 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.12
The measurement of dynamic stagger in electric railways is one of the key test parameters to increase speed and maintain safety in electric railways. This paper is introduces a non-contact optical-based measuring instrument of a catenary system in electric railways. The instrument is implemented by utilizing a CCD (Charge Coupled Device) camera installed on the roof of a vehicle for vision acquisition and image processing techniques including the Canny edge detector and the Hough transform to detect contact wires and calculate dynamic stagger. To check the validity of our approach for the intended application, we measured stagger of a overhead wire of a Korea Tilting Train (TTX). The non-contact optical-based measurement system proposed in this paper performs real-time stagger measurement of an activated high-voltage contact wire. By results of this paper, the instrument should be applied to assess performance and reliability of newly developed electric railway vehicles.