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2021 Vol.54, Issue 9

Research Article

Spatiotemporal chlorine residual prediction in water distribution networks using a hierarchical water quality simulation technique

계층적 수질모의기법을 이용한 상수관망시스템의 시공간 잔류염소농도 예측

Gimoon Jeonga
,
Doosun Kangb*
,
Taemun Hwangc
정 기문a
,
강 두선b*
,
황 태문c
aResearch doctor, Department of Civil Engineering, Kyung Hee University, Yongin, Korea
bProfessor, Department of Civil Engineering, Kyung Hee University, Yongin, Korea
cSenior Research fellow, Department of Land, Water and Environment Research, Korea Institute of Civil engineering and building Technology, Goyang, Korea
a경희대학교 사회기반시스템공학과 연구박사
b경희대학교 사회기반시스템공학과 교수
c한국건설기술연구원 국토보전연구본부 선임연구위원
*Corresponding Author
30 September 2021. pp. 643-656
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Abstract

Recently, water supply management technology is highly developed, and a computer simulation model plays a critical role for estimating hydraulics and water quality in water distribution networks (WDNs). However, a simulation of complex large water networks is computationally intensive, especially for the water quality simulations, which require a short simulation time step and a long simulation time period. Thus, it is often prohibitive to analyze the water quality in real-scale water networks. In this study, in order to improve the computational efficiency of water quality simulations in complex water networks, a hierarchical water-quality-simulation technique was proposed. The water network is hierarchically divided into two sub-networks for improvement of computing efficiency while preserving water quality simulation accuracy. The proposed approach was applied to a large-scale real-life water network that is currently operating in South Korea, and demonstrated a spatiotemporal distribution of chlorine concentration under diverse chlorine injection scenarios.

Keywords
Chlorine residual analysis
Hierarchical simulation
Spatiotemporal distribution
Water distribution network

최근 국내 상수도 관리 기술은 고도로 발달하고 있으며, 이 과정에서 상수관망 내 용수공급 현황을 파악하고 예측하기 위한 컴퓨터 수리·수질 해석모형은 핵심적인 역할을 수행하고 있다. 그러나 대규모 네트워크의 경우 컴퓨터 해석모형의 부담을 가중하고, 특히 짧은 계산시간 간격과 긴 모의시간이 요구되는 수질해석의 경우, 막대한 계산시간이 소요되어 다양한 수질모의 및 분석이 어려운 경우가 발생한다. 본 연구에서는 대규모 상수관망시스템의 수질해석의 계산효율을 개선하기 위해 상수도 공급계통을 2단계로 계층화한 후, 계층화된 네트워크를 대상으로 수질모의를 수행하는 계층적 수질모의 기법을 제안하였다. 제안된 모의기법은 국내 대규모 상수도 네트워크에 적용하였으며, 다양한 염소투입농도 시나리오에 따른 잔류염소농도의 시공간적 분포를 모의하고 분석한 결과를 제시하였다.

키워드
네트워크 계층화
상수관망시스템
시공간분석
잔류염소농도
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 54
  • No :9
  • Pages :643-656
  • Received Date : 2021-05-27
  • Revised Date : 2021-06-21
  • Accepted Date : 2021-06-21
  • DOI :https://doi.org/10.3741/JKWRA.2021.54.9.643
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