• Title/Summary/Keyword: area-wide management

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Development of Technology for Network Construction using Wide Area Energy (광역에너지이용 네트워크 구축 기술개발)

  • Kim, Lae-Hyun;Chang, Won-Seok;Hong, Jae-Jun
    • Journal of Energy Engineering
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    • v.17 no.3
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    • pp.125-138
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    • 2008
  • In order to diversify energy source and to utilize it effectively, it requires to construct an integrated energy management system in a wide area. This research paper explores the core technology of network construction using wide area energy and applies the technology to the field. In specific, it examines the business model by developing l) construction technology of optimum integrated system for thermal supply on wide area network related IT technology, 2) technology of unutilized energy as heat pump using exhaust gas latent heat, and 3) thermal transportation and storage technology using various sources, and by evaluating the applicability and marketability of the model in the field.

A Study on Development of Online Wide Area SynchroPhasor and Voltage Stability Monitoring System using Satellite Network (위성망을 이용한 온라인 광역 동기위상 및 전압안정도 감시 시스템 개발에 관한 연구)

  • Kwon, Dae-Yun;Kim, Tae-Jin;Yoon, Sang-Hyun;Jung, Gwang-Gyun;Oh, Gyu-Whan
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.273-274
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    • 2008
  • Recently, the most wide-area blackout in North America, Canada and Europe had shown us indirectly the importance of Wide-Area Power System Protection and had influence on the direction of domestic electric power industry. After reorganization of the electric power industry in 2001, market incentives controls the power generation, transmission and distribution rather than stability of power grid, and moreover it produce bad results like inefficient facility management and too much competition. In addition, we can easily predict the massive loss of social and economic when the wide-area outage occurs by north direction load flow which is a pending problems of domestic power system and in a changed industry likes hi-tech manufacture and information technology industries. This paper introduces the development of infra systems for prevent wide-area blackout in situations of the power system operations.

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Management of coastal and offshore fishing ground using wide-area network of AIS (AIS 광역망을 이용한 연근해 어장관리)

  • Shin, Hyeong-Il;Bae, Mun-Ki;Lee, Dae-Jae;Lee, Yoo-Won
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.42 no.3
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    • pp.179-185
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    • 2006
  • In order to efficiently manage the coastal and offshore fishing ground, the applicability of real-time monitering was also investigated through a wide-area network of automatic identification system(AIS). The experiment of efficiently managing coastal and offshore fishing ground with a wide-area network of AIS required, on the headquarter's screen, a synthetic display of vessel information transmitted from three different distant stations. This experiment tested the applicability of real-time monitoring with the shown display. The maximum range of detection of the first station in Busan was 24 nautical miles while those of the second and third stations in Yeosu and Jeju were 26 and 52 nautical miles, respectively.

A Study on the Development of a Wide-Area Monitoring and Control System for Tug/barges

  • Moon, Serng-Bae;Kim, Bo-Kyung;Jeong, Tae-Gweon
    • Journal of Navigation and Port Research
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    • v.33 no.9
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    • pp.609-614
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    • 2009
  • The traffic of tug/barges which are carrying construction materials, large plants for harbor development, or offshore structures has recently increased in the coast of Korea. The west and south coast of Korea are always congested due to a lot of islands and traffic concentration. Specially tug/barges have higher probability of marine accidents due to their bad maneuverability than others. Considering the operational circumstance and maneuverability, this study was to develop a wide-area monitoring and control system for tug/barges in the coastal area of Korea. The system was made in the form of three program modules i.e. navigation analysis program module, monitoring and control program module, database module. And seven functions were programmed to monitor and control the tug/barges efficiently. These are ship information search, tug/barge information and track management, designated area and safe navigation zone management, fairway management, accident data management, warning of danger, safety information management.

Application of Quality Cost Model ln Quality Improvement Area (품질개선분야에서의 품질코스트모델의 적용)

  • Chung, Young-Bae;Kim, Yon-Soo
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.34 no.3
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    • pp.71-78
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    • 2011
  • This parer proposes application of quality costing system in quality improvement area. Cost of quality in quality improvement area provides a valuable of both providing the need for improvement and giving a starting point for project. WQCMS(Web-based Q-Cost Management System) have ability to collect and analyze quality data generated from various different departments in the inside or outside of the enterprise without any limitations, if end-users are able to access wide area network. It provides the capability to integrate quality information from database and to generate various easy analysis reports to management's needs using built-in analysis tool modules with real-time. Web-based quality cost management system to measure the performance of quality improvement activities in the business firms. This paper proposes standard model for quality cost process in quality improvement area.

Development of Water Management System for Optimal Operation and Control in Wide-area Waterworks (광역상수도의 최적운영 및 제어를 위한 수운영시스템 개발)

  • 남의석;우천희;김학배
    • Journal of Institute of Control, Robotics and Systems
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    • v.9 no.7
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    • pp.489-497
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    • 2003
  • A water management system is developed to reduce the unit cost of production in wide-area waterworks. Improving productivity in waterworks is to save power rate. We suggest a method to schedule the supply of water according to the time-varying power rate and pump control scheme. Water pipeline analysis package (SynerGEE Water) is utilized to obtain optimal pump control solution adaptation to water demand. Our evaluation results show that developed scheme is more efficient than the conventional.

IEC 61970 CIM based Study on the application of model for Wide Area Monitoring And Control System (IEC 61970 CIM을 기반으로 한 Wide Area Monitoring And Control system 모델 적용 연구)

  • Cho, Jun-Hee;Oh, Young-Suk;Choi, Mi-Hwa;Shin, Seung-Hee;Kim, Ji-Young
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.178-179
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    • 2011
  • The exchange of information with legacy systems is a main issue in the era of SMARTGRID. Because WAMAC(Wide Area Monitoring and Control) system has monitoring function, as well as control function, it is very necessary for WAMAC to exchange data and information with SCADA(Supervisory Control and Data Acquisition) / EMS(Energy Management System). IEC 61970 CIM(Common Information Model) is an abstract model that represents all the major objects in an electric utility enterprise typically involved in utility operations. In this paper, a proposal that adopting CIM to WAMAC model be submitted so that the integration of various legacy system and application for itself be able to be flexible.

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The model of wide-area intelligent information portal for the next generation e-government (차세대 전자정부의 지능형 광역정보포털 모델)

  • Choi, Chun-Sung;Noh, Kyoo-Sung;Cho, Hyun-Joo;Cho, Jae-Wan
    • Journal of Digital Convergence
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    • v.5 no.2
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    • pp.59-70
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    • 2007
  • Recently, rising of the convergence of technologies such as IT, GIS, GPS, and Sensors is developing the new information environment which enables man-to-man, man-to-object and object-to-object to exchange information anywhere and anytime. The Korean government has made great efforts to implement the virtual government with development of the next generation technologies continually and dynamically. These efforts for implementing e-government can be summarized by the citizen centered, integrated services, the customized personalization, the intellectual services, and the integration and cooperation between each offices for providing those services. Therefore, we wish to present the model of wide-area intelligent information systems which can provide services to form the future of this virtual government with GIS infrastructure in this study.

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The Experimental Analysis of Integrated (Name/Property) Dynamic Binding Service Model for Wide-Area Objects Computing (광역 객체 컴퓨팅에서 통합(이름/속성) 기반의 동적 바인딩 서비스 모델의 실험분석)

  • Jeong, Chang-Won;Joo, Su-Chong
    • Journal of KIISE:Computer Systems and Theory
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    • v.33 no.10
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    • pp.746-758
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    • 2006
  • Many objects existing on wide area environments have the replication characteristics according to how to categorize using their own names or properties. From the clients' requests, the existing naming and trading services have not supported with the binding service for replicated solver object with the same service type. For this reason, we present an integrated model that can support the selection of replicated object and dynamic binding services on wide-area computing environments. This model suggests provides not only location management of replicated objects but also active binding service which enables to select a least-loaded object on the system to keep the balance of load between systems. In this purpose, constructing both the service plan and model for support solver object's binding with replication property on wide area computing environments has been researched. In this paper, we showed the test environment and analyzed the performance evaluation of client/server binding procedures via integrated binding service in federation model and verified our model under the condition to see whether load balance can be applied to our model. For the performance evaluation of suggested wide area integrated binding service federation model, evaluated the integrated binding service of each domain and analyzed the performance evaluation of process for non-replication object's under federation model environment. Also, we analyzed the performance evaluation of the federation model between domains for wide area environment. From the execution results, we showed the federation model provides lowers search-cost on the physical tree structure of network.

Status of Korean Suggestion System (우리나라 제안제도의 현황)

  • Park, Roh-Gook;Lee, Sung-Ho
    • Journal of the Korea Safety Management & Science
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    • v.10 no.1
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    • pp.215-224
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    • 2008
  • Recently, product life-cycles are shortening faster than ever before, and companies with a suggestion system are in better position to overcome this shortening life-cycle and thus promote customer satisfaction. Suggestion systems, however, are not actively utilized on the production floors in many firms. This study showed that small-sized and medium-sized firms where a suggestion system is properly functioning by a strong will of top management are not many in Gangwon-do area. In considerable number of companies, a suggestion system is informally and spontaneously applied by the workers on the production floors not by company-wide systems. A suggestion system is required as a means of creating future value-added and it is a matter of course that the role of top management, together with middle-class managements' influence is quite important in the course of the successful application of it. A suggestion system, to be successful, calls not only individual efforts but also positive corporate cultures.