• 대한공간정보학회지
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• 제17권2호
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• pp.47-53
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• 2009

상황인식기술은 유비쿼터스 환경에서의 필수적인 요소기술로 자리매김하고 있다. 특히 유비쿼터스도시를 구성하는 3대 요소인 유비쿼터스도시기반시설에 있어서도 상황인식기술은 매우 중요한 위치를 차지한다. 본 연구에서는 지능형 시설물 상황인식 모듈개발을 위해 상수도관의 파열에 따른 누수사고를 다양한 상황으로 가정하고 이에 대한 시나리오 및 처리과정을 제시하였다. 시설물에 대한 상황별 시나리오는 향후 상황인식 모듈개발 또는 모델링의 토대가 될 것이다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1994년도 추계학술대회 논문집 학회본부
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• pp.181-183
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• 1994

This paper presented the developments and operations of control system for Inverter-controlled air pressure type water-supply systems. The developed controller that enables regular speed and variable speed. In addition, an air supplement control system was developed to establish a utility model of water supply facility system as well as a method to optimize its operation.

• 상하수도학회지
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• 제25권4호
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• pp.581-589
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• 2011

Generally, treated water or raw water is transported into storage reservoirs which are receiving facilities of local governments from multi-regional water supply systems. A water supply control and operation center is operated not only to manage the water facilities more economically and efficiently but also to mitigate the shortage of water resources due to the increase in water consumption. To achieve the goal, important information such as the flow-rate in the systems, water levels of storage reservoirs or tanks, and pump-operation schedule should be considered based on the resonable water demand forecasting. However, it is difficult to acquire the pattern of water demand used in local government, since the operating information is not shared between multi-regional and local water systems. The pattern of water demand is irregular and unpredictable. Also, additional changes such as an abrupt accident and frequent changes of electric power rates could occur. Consequently, it is not easy to forecast accurate water demands. Therefore, it is necessary to introduce a short-term water demands forecasting and to develop an application of the forecasting models. In this study, the forecasting simulator for water demand is developed based on mathematical and neural network methods as linear and non-linear models to implement the optimal water demands forecasting. It is shown that MLP(Multi-Layered Perceptron) and ANFIS(Adaptive Neuro-Fuzzy Inference System) can be applied to obtain better forecasting results in multi-regional water supply systems with a large scale and local water supply systems with small or medium scale than conventional methods, respectively.

• 한국지리정보학회지
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• 제3권3호
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• pp.90-97
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• 2000

본 연구는 중소도시에서 산재되어 있는 상수도 관망관리를 위하여 GIS의 적용시 개선되어져야 할 중요한 문제점을 파악하여 그 방안을 도출하기 위한 것으로 제천시의 관망도를 중심으로 분석 정리하였다. 이를 위하여 현재의 상수도 업무를 중심으로 관련분야와의 연계방안과 그 모형을 도출하였으며, 기 설치되어 운영하고 있는 상수도 시설물 관리시스템과의 비교를 통하여 문제점을 찾아 그 개선 방안을 제시하였다. 그 연구결과로 GIS에 의한 상수도관망관리시스템 구축에서는 관망시설정보, 누수방지시설정보, 조건에 따른 관망해석의 정보뿐만 아니라 수치지형정보, 도면전산화정보, 관련 수용가별 정보 등과의 연계를 통한 개발적용이 이루어질 때에 더욱 많은 효과를 기대할 수 있었다.

• 경영과학
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• 제31권3호
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• pp.95-111
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• 2014

It is essential to carry out an economic analysis on public water supply projects so that policy makers and water enterprises are aware of the actual value of the project. However, many popular approaches based on discounted cash flow analysis do not capture the uncertainties inherent in cash flow. In order to analyze the economic values of the water supply project of local governments, we utilize real option model, which considers uncertainty in future water price behavior and captures the value of real life flexibility. The real option model is designed to incorporate the option to expand and abandon, and it is applied to a local government case. Furthermore, we assess the project by exploring Luehrman's option space to accommodate the more efficient decision making. The results show that substantial amount of potential value is included in the public water supply service, and the overall value is greater than the value obtained from the discounted cash flow model.

• 한국농공학회논문집
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• 제57권1호
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• pp.59-67
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• 2015

Because reservoirs that supply irrigation water play an important role in water resource management, it is necessary to evaluate the vulnerability of this particular water supply resource. The purpose of this study is to provide water supply risk maps of agricultural reservoirs in South Korea using irrigation vulnerability model and cluster analysis. To quantify water supply risk, irrigation vulnerability indices are estimated to evaluate the performance of the water supply on the agricultural reservoir system using a probability theory and reliability analysis. First, the irrigation vulnerability probabilities of 1,346 reservoirs managed by Korea Rural Community Corporation (KRC) were analyzed using meteorological data on 54 meteorological stations over the past 30 years (1981-2010). Second, using the K-mean method of non-hierarchical cluster analysis and pre-simulation approach, cluster analysis was applied to classify into three groups for characterizing irrigation vulnerability in reservoirs. The morphology index, watershed area, irrigated area, and ratio between watershed and irrigated area are selected as the clustering analysis parameters. It is suggested that the water supply risk map be utilized as a basis for the establishment of risk management measures, and could provide effective information for a reasonable decision making on drought risk mitigation.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2005년도 학술발표회(1)
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• pp.248-249
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• 2005

• 한국환경과학회지
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• 제14권3호
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• pp.289-296
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• 2005

In this study aims is water supply criteria relations for evaluating the possible performance of water resources systems. These measures describe how likely a systems is to fail(reliability), how quickly it recovers from failure(resiliency), and how severe the consequences of failure may be(vulnerability). The performance of a criteria evaluating with a variety of operating policies illustrates their use. As a result study frequency reliability and quantitative reliability is linear relations and quantitative reliability is high reliability for equality water supply policy. As reliability and vulnerability are in inverse proportion to each other. Therefore these criteria relation analysis can be for Imha dam to variety water supply policy.

• 한국측량학회지
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• 제18권2호
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• pp.111-120
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• 2000

상수, 하수, 전기 그리고 가스 등의 시설물들은 우리 생활에 필요한 도시기반시설로서 대부분 지하에 매설되어 있어 지상시설물에 비해 효율적인 관리가 어렵다. 지하시설물 관리소홀로 발생하는 도시재난을 방지하고 도로굴착 중복공사에 따른 예산낭비와 교통체증을 감소시키기 위해서는 지하시설물에 대한 조사 탐사 및 데이터베이스 구축과 함께 지하시설물 데이터를 효율적으로 관리하기 위한 응용시스템 개발이 요구된다. 전주시는 국가지리정보체계 사업의 일환으로 1998년 12월부터 상수도 지하시설물 전산화 사업을 실시하여 시가화 구역 39.6$km^2$내 80 mm 이상의 상수관 물량 402.89 km 대한 조사/탐사 작업을 수행하였다. 또한 80mm 이하 537 km관에 대해서는 별도의 조사/탐사작업을 수행하지 않고 급수카드를 기초로 데이터베이스를 구축하였다. 또한 기존의 각 부서별 업무프로세스를 GIS 시스템을 활용할 수 있는 체계로 수정하였고 업무프로세스를 기반으로 상수도 지하시설물 관리시스템을 개발하였다. 개발된 상수도 지하시설물 관리시스템은 기본도관리, 상수도검수, 관로관리 및 관로조회, 공사관리, 운영관리 그리고 도면관리등의 하위시스템으로 구성되어 있다. 본 연구에서는 지하시설물 조사/탐사 과정 및 방법 그리고 조사/탐사 과정중 발생한 문제점을 도출하고 개발한 상수도 지하시설물 관리시스템을 구성하고 있는 각각의 서브시스템들의 기능들을 제시하였다.

• 산업공학
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• 제19권2호
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• pp.106-116
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• 2006

In this study, the priority of risk factors in supplying water through water supply pipeline network was evaluated by PROMETHEE and ANP multi-criteria decision analysis. We chose 'corrosion', 'burst' and 'water pollution' in pipe as major reference criteria and selected eight risk factors to evaluate the priority, and then we compared the results of PROMETHEE with those of ANP. We also analyzed the results of the sensitivity analysis by changing the weights and parameters of preference functions in PROMETHEE. We investigated the possibility of integrating two methods by using the results of ANP as the weights of preference function in PROMETHEE. The priority of risk factors for supplying municipal water which is evaluated by this study may provide basic data to establish a contingency plan for accidents, or to establish the specific emergency response procedures.