Optimal placement of isolation valves in water distribution networks based on segment analysis

Gabyul Lim; Doosun Kang

doi:10.3741/JKWRA.2019.52.4.291

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2019 Vol.52, Issue 4 Preview Page Next Page

Research Article

Optimal placement of isolation valves in water distribution networks based on segment analysis 단수구역 해석을 이용한 상수관망시스템 내 최적 밸브위치 결정

30 April 2019. pp. 291-300

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Abstract

If pipes are damaged in a water distribution network (WDN), adjacent valves are closed to isolate the pipes for repair. Due to the closed valves, parts of WDN are isolated from water supply sources. The isolated area is divided into Intended Isolation Area (IIA) and Unintended Isolation Area (UIA). The IIA occurs by intention to isolate the damaged pipe, while UIA is unintentionally disconnected from the sources due to IIA. Thus, the extension of isolated area and suspended flows are mainly affected by number and location of installed valves in WDN. In this study, optimization models were developed to determine optimal valve locations in WDN. In a single-objective model, total water supply suspension is minimized, while a multi-objective model intends to simultaneously minimize the suspended flow and valve installation cost. Optimal valve placement results obtained from both models were compared and analyzed using a sample application network.

Keywords

Intended and unintended isolation area

Optimization

Valve placement

Water distribution network

상수관망시스템 내 관로가 파손될 경우, 수리를 위해 파손 관로와 인접한 밸브를 차폐하게 된다. 이때, 밸브 차폐로 인해 관망의 일부분이 고립되어 용수공급이 차단되는 단수구역이 발생하게 된다. 단수구역은 파손 관을 포함한 직접고립지역과 직접고립지역으로 인해 의도치 않게 수원으로부터 물 공급이 차단되는 간접고립지역으로 구분된다. 따라서, 관 파손에 의한 단수구역 및 단수용량은 시스템 내 설치된 밸브의 개수와 위치에 크게 영향을 받게 된다. 본 연구에서는 상수관망시스템 내 최적의 밸브위치를 결정하기 위해 최적화 모형을 개발하고 적용하였다. 예시 관망을 대상으로 단수용량 최소화를 목적함수로 설정한 단목적 최적화와 단수용량과 밸브 설치비용을 동시에 최소화하는 다목적 최적화를 각각 수행하였으며, 두 가지 모형을 통해 도출된 최적 밸브설치 결과를 비교, 분석하였다.

키워드

직·간접고립지역

단수구역

밸브위치선정

상수관망

최적화

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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 : 52
No :4
Pages :291-300
Received Date : 2019-01-30
Revised Date : 2019-03-17
Accepted Date : 2019-03-17
DOI :https://doi.org/10.3741/JKWRA.2019.52.4.291

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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