상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제35권1호
  • /
  • Pages.15-25
  • /
  • 2021
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
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주입 압력파의 웨이블릿 일관성 분석을 사용한 저수조-관로-밸브 시스템에서의 누수탐지모형 연구

A scheme of leak detection model in a reservoir pipeline valve system using wavelet coherence analysis of injected pressure wave

  • 고동원 (부산대학교 공과대학 사회환경시스템공학과) ;
  • 이정섭 (부산대학교 공과대학 사회환경시스템공학과) ;
  • 김진원 (수자원기술주식회사) ;
  • 김상현 (부산대학교 공과대학 사회환경시스템공학과)
  • Ko, Dongwon (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Lee, Jeongseop (Department of Civil and Environmental Engineering, Pusan National University) ;
  • Kim, Jinwon (Water Resources Engineering Corporation) ;
  • Kim, Sanghyun (Department of Civil and Environmental Engineering, Pusan National University)
  • 투고 : 2020.11.04
  • 심사 : 2020.12.14
  • 발행 : 2021.02.15
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초록

In this study, a method of leakage detection was proposed to locate leak position for a reservoir pipeline valve system using wavelet coherence analysis for an injected pressure wave. An unsteady flow analyzer handled nonlinear valve maneuver and corresponding experimental result were compared. Time series of pressure head were analyzed through wavelet coherence analysis both for no leak and leak conditions. The leak information can be obtained through either time domain reflectometry or the difference in wavelet coherence level, which provide predictions in terms of leak location. The reconstructed pressure signal facilitates the identification of leak presence comparing with existing wavelet coherence analysis.

키워드

과제정보

이 연구는 환경부 "글로벌탑 환경기술개발사업(20160021200015)"의 지원으로 수행되었으며 이에 감사드립니다.

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