Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Application of Point Cloud Data for Transmission Power Line Monitoring

송전선 모니터링을 위한 포인트클라우드 데이터 활용

  • Park, Joon-Kyu (Department of Civil Engineering, Seoil University) ;
  • Um, Dae-Yong (Department of Civil Engineering, Korea National University of Transportation)
  • 박준규 (서일대학교 토목공학과) ;
  • 엄대용 (한국교통대학교 토목공학과)
  • Received : 2018.09.27
  • Accepted : 2018.11.02
  • Published : 2018.11.30
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Abstract

Korea is experiencing a rapid increase in electricity consumption due to rapid economic development, and many power transmission towers are installed to provide smooth power supply. The high-voltage transmission line is mainly made of aluminum stranded wire, and the wire is loosely guided so that some deflection is maintained. The degree of deflection has a great influence on the quality of the construction and the life of the cable. As the time passes, the shrinkage and expansion occur repeatedly due to the weight of the cable and the surrounding environment. Therefore, periodic monitoring is essential for the management of the power transmission line. In this study, the power transmission lines were monitored using 3D laser scanning technology. The data of the power transmission line of the study area was acquired and the point cloud type 3D geospatial information of the transmission line was extracted through data processing. The length of the transmission line and deflection amount were calculated using the 3D geospatial information of the transmission line, and the distance from the surrounding obstacles could be calculated effectively. The result of study shows the utilization of 3D laser scanning technology for transmission line management. Future research will contribute to the efficiency of transmission line management if a transmission line monitoring system using 3D laser scanning technology is developed.

우리나라는 급격한 경제발전으로 전력소비량이 크게 증가하고 있으며, 원활한 전력의 공급을 위해 많은 송전탑 및 송전선이 설치되고 있다. 고압 송전선은 주로 알루미늄 연선으로 제작되며, 전선을 느슨하게 가선하여 약간의 처짐이 유지되도록 하고 있다. 처짐의 정도는 공사의 품질과 전선의 수명에 많은 영향을 끼치게 되는데 시간이 지날수록 전선의 무게나 주변 환경적 요인으로 수축과 팽창이 반복적으로 일어나므로 송전선의 관리를 위해 주기적인 모니터링이 필수적이다. 본 연구에서는 3D 레이저 스캐닝 기술을 활용하여 송전선에 대한 모니터링을 수행하였다. 연구대상지의 송전선에 대한 데이터를 취득하고, 자료처리를 통해 송전선에 대한 포인트클라우드 형태의 3차원 공간정보를 추출하였다. 송전선에 대한 3차원 공간정보를 활용하여 송전선의 길이와 처짐량을 산출하였으며, 주변 장애물들과의 이격거리를 효과적으로 산출할 수 있었다. 연구를 통해 송전선 관리를 위한 3D 레이저 스캐닝 기술의 활용성을 제시할 수 있었으며, 향후 추가적인 연구를 통해 3D 레이저 스캐닝 기술이 적용된 송전선 모니터링 방안이 개발된다면 송전선 관리의 효율성 증대에 크게 기여할 것이다.

Keywords

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Fig. 1. Study Flow

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Fig. 2. 3D Laser Scanner

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Fig. 3. Study Area

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Fig. 4. Pointcloud

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Fig. 5. Registration and Extraction Completed Data

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Fig. 6. Existing Deflection Measurement Method

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Fig. 7. Modeling of Power Transmission Line

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Fig. 8. Cross Section

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Fig. 9. Deflection of Power Transmission Line A

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Fig. 10. Deflection of Power Transmission Line B

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Fig. 11. Deflection of Power Transmission Line C

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Fig. 12. The process of distance calculation

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Fig. 13. Distance between the Power Transmission Line and Surrounding Obstacles

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Fig. 14. Minimum Separation Distance between Power Transmission Line and Surrounding Obstacles

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Fig. 15. Concept of Monitoring Power Transmission Tower and Power Transmission Line

Table 1. The length of Power Transmission line, Maximum Deflection, and Minimum Separation Distance from the Obstacle

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