• Title/Summary/Keyword: 검측시스템

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A Study on the Strategy to Improve Maintenance Problem Using Measurement System of Traction Return Current in High Speed Line (고속선에서 귀선전류 검측시스템을 활용한 유지보수 향상방안 연구)

  • Lee, Tae-Hoon;Park, Ki-Bum;Lim, Myoung-Sub
    • Proceedings of the KIEE Conference
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    • pp.253-255
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    • 2006
  • 본 논문은 고속선에서 전차선 귀선전류를 측정하여 UM71-C 궤도회로의 유지보수를 향상하고자한다. KTX 36호에 구축된 차상 검측시스템 중 귀선전류 검측시스템에서 레일 좌/우에 흐르는 전차선 귀선전류 및 레일 간의 귀선전류 차를 검측하여 불평형 상태를 비교 및 분석하였다. 이러한 결과는 궤도회로 설비들에 대한 구성요소의 기능저하를 사전 예측하여 열차의 안전운행을 확보하기 위한 자료로 활용하고, 또한 검측시스템에서 얻어진 데이터들과 비를 통해 향후 유지보수에 활용 가능한 지침 및 분석기준을 마련하고자 한다.

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Structure of Integrated Adaptive Catenary Inspection System for Improved Safety (안전성 고도화를 위한 융합-가변형 전차선 검측시스템의 구조)

  • Kim, Ji-Yoon;Kim, Jung-Phyung;Kim, Woo-Saeng
    • Journal of the Institute of Electronics and Information Engineers
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    • v.52 no.9
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    • pp.147-152
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    • 2015
  • Almost all existing inspection methods for catenary system have relied on dedicated track inspection cars. Two factors make it necessary to modify the conventional method: First, the climate has become increasingly similar to that of a subtropical area. In addition, high speed trains have been developed that can run as fast as 450Km/h. This paper presents a visual catenary inspection system structure that incorporates roadbed information for high-speed running environments. Conventional catenary inspection systems determined the degree of wearing only for the trolley wire. The facility inspection system presented in this paper on the other hand utilizes visual and sound data of inspection targets and adjusts inspection frequency and sensitivity depending on the geographic data.

Lifetime Prediction Using Reliability Analysis Method about for the Electric Detection System (신뢰성분석 기법을 이용한 고속철도 검측시스템의 수명예측)

  • Lee, Hyunwoo;Lee, Byeong-Gon;Lee, Chunghan
    • Journal of Applied Reliability
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    • v.14 no.3
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    • pp.191-196
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    • 2014
  • The importance of railway safety has become increasingly significant domestically as well as internationally, as a series of high speed railway accidents and other major accidents have occurred recently. Especially for the domestic railway, the Korean Railway Safety Law has been revised recently, mandates all the domestic railway operation authorities to render the performance of RAMS and RCM. This study inspects and analyzes the current status of the sensing technology of the electric detection system to tell the status of railway facilities in the highway railway in a real time through a sensor. It also performs the reliability analysis of the electric detection system that is being progressed as a study assignment and suggests the system construction for the higher reliability.

High Speed Rail Measurement System of HSR-350x (한국형고속열차 고속 궤도검측시스템)

  • Kim, Sang-Soo;Park, Choon-Soo
    • Journal of the Korean Society for Railway
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    • v.11 no.2
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    • pp.115-119
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    • 2008
  • Korean Train Express (KTX) has opened to commercial traffic since 2004 at maximum speed 300km/h. As the speed of the train becomes higher, the conditions of the rail affect the behavior of the running train. To secure the safety and reliability of high speed railway, it is necessary to inspect rail irregularities and to maintain the rail regularly. The authors designed the high speed rain measurement system over 300km/h. And we installed the system to Korea High-speed Railway (HSR 350x). In this paper, we introduce the high speed rail measurement system for HSR 350x and show verification of the performance of the system through test runs.

Development of Catenary Arc Detection System (전차선 아크 검측 시스템 개발)

  • Song, Sung-Gun;Lee, Teak-Hee;Cho, Seong-Jae;Moon, Chul-Yi;Park, Seong-Mo
    • Journal of the Korean Society for Railway
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    • v.13 no.1
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    • pp.37-43
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    • 2010
  • Catenary (Overhead Contact Lines) and Pantograph are used to transmit electrical energy to electric railways. An Arc occurs by unstable contact between catenary and pantograph during electric railways operation, which causes malfunctioning or even an accident. Therefore, to prevent a arc or electric contact loss are required arc detection systems with catenary maintenance capability. This paper describes developing of catenary arc detection system using photo detector in order to detect arc incidence in a indirect way. This developed system can also achieve Video-recordings and environmental conditions such as wire voltage/current, pantograph height, speed, position of electric railways, and temperature/humidity. This system have been evaluated at the section that bounds for dongdaegu from seoul. From the experimental results, the occurrence of arc and intensity of arc are mainly effected by wire voltage/current, pantograph height and speed of electric railways.

A Internal Signal Modeling for a Defect Diagnosis of Track Circuit on HSL (고속선 궤도회로 결함진단을 위한 내부 모델링)

  • Park, Ki-Bum;Lee, Tae-Hoon
    • Proceedings of the KSR Conference
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    • pp.779-785
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    • 2006
  • This paper introduces a result of internal signal modeling for a defect diagnosis of the UM-71C track circuit using on HSL. Actually, We fixed a sample area within operating section on HSL and performed the simulations for short circuit current that is reflected characteristic impedance and propagation factor. We compared the measuring data with the result of the simulation. These modeling can be used as the basic data for secure of the safety. Also, It need to make a criteria of analysis for the maintenance through comparison simulation data and inspection data.

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Dilation and Erosion Technique using a Inspection of the Catenary System Design (침식, 팽창기법을 이용한 전차선 검측 시스템의 설계)

  • Kim, Woo-Sang;Jung, Min-Yong;Kim, Ji-Yoon
    • Journal of the Korean Society for Railway
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    • v.9 no.6
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    • pp.701-704
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    • 2006
  • The catenaries must guarantee the constant electricity to the trains, so that the safety and the estimate of fatigue degree and the inspection of abrasion degree should be done rapidly. This thesis proposes the system that can manage the performance/failure of the catenaries using the image process as the solution for the weak points of the existing inspection such as the decrease of immediateness and the lack of constancy in the human resources. This study simulates the ALD using VHSV (Virture HSV) which is the unreal HSV images, not getting the real HSV in ages to the image processing technique that repeats the erosion and the expansion of the images as the methods that can monitor the slight/critical defects of the catenaries as dealing with the result of the catenaries inspection images. The final ALD (Abnormal Line Detection) system is designed based on this simulation. I have demonstrated it with the VHSV (Virture HSV) virtual images as the materials of the test and inspected it through testing the defects of the catenaries for the thesis.