• Title/Summary/Keyword: Power management System

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A study on the computer application for efficient management of the power distribution system (효율적인 배전관리를 위한 컴퓨터 응용연구)

  • 이병철;서영노;정진현;고윤석;김호용
    • 제어로봇시스템학회:학술대회논문집
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    • 1993.10a
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    • pp.975-980
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    • 1993
  • In accordance with increase, if electronic power demanded, more efficient supervisory control of distribution system will be required. This study contains development of MMI(man-machine-interface) system with GUI(graphic-user-interface), for the automatic power distribution system. The main function of MMI system is to edit network of power distribution and to management of data base for network. The GUI function of MMI system enables more efficient management of power distribution system.

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A Study on the DB Management System for Outage Management of Power System (전력계통설비 정지관리를 위한 DB관리 구축방안에 관한 연구)

  • Kim T. W.;Heo J. Y.;Kim C. W.;Lee S. W.;Kim J. C.;Lee G. Y.;Lee S. J.;Lee C. G.;Cho B. S.
    • Proceedings of the KIEE Conference
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    • summer
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    • pp.110-112
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    • 2004
  • The outage management is very important because the outage causes a severe damage to the power system. Therefore, the utilities employ the outage management system, which is different from each others. This paper suggests the four kind of database systems for outage management. The efficiency of the outage management may be improved by using the suggested database system.

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A Power Management Technology for Stand-alone PV System Using Estimation of Operating Power for Variable Message Sign (가변안내표지판의 운영 전력 예측을 통한 독립형 태양광 발전 시스템용 전력 관리 기술)

  • Lim, Se-Mi;Lee, Ji-Hoon;Park, Jun-Seok
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.8
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    • pp.1140-1147
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    • 2012
  • This paper proposes the power management technology for stand-alone PV system to extend installation environment and coverage. The proposed power management technology in this paper can protect battery safeness from overcharge/discharge with keeping the proper SOC(State of Charge) and extend using time of system through estimation of operating power. The proposed power management technology in this paper is applied to Infra-free Variable Message Sign. And performance of power management technology in this paper was verified using simulation scenario.

A Study on the Cost Hierarchical System of Nuclaer Power Plant Construction Project for Introcusting Earned Vaule Management System (성과관리시스템(EVMS) 도입을 위한 원전 건설사업비 관리체계 세분화 방안에 관한 연구)

  • Lee, Sang-Hyun;Kim, Woo-Joong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2019.05a
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    • pp.230-231
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    • 2019
  • The nuclear power plant construction project is large-scale, has various stakeholders and computer system, and is produced and managed a large amount of information. The domestic nuclear power plant construction project has accumulated data based on many years of experience in the system. It has the competitiveness to suggeest alternatives that meet the requirement of the client in the overseas nuclear power plant project. Earned value management, which integrates schedule and cost, is possible to risk management. It was developed the earned value management system considering the the actual data properties and types of the preceding nuclear power plant construction projects. It will be able to increase the nuclaer power plant export competieiveness. Therefore, it was palned to carry out future stuies so that it be able to complement the measure to integrate cost and schedule in consideration of actual data(quantity of activity, etc.).

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Application of Energy Storage System for Industrial Customer (산업용 수용가의 에너지저장장치 적용)

  • Hong, Jong-seok;Chai, Hui-seok;Kang, Byoung-wook;Kim, Tae-hyeong;Kim, Jae-chul
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.64 no.7
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    • pp.992-998
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    • 2015
  • The ESS is composed of Battery Package, PCS(Power Conditioning System) Package, BCU(BESS Control Unit). In Jeju smart grid test-bed, we have developed a business model by ESS power system, renewable energy, transportation, such as customers, and have demonstrated above things. We have analyzed the EMS(Energy Management System) model of KPX where manages supply and demand of domestic electrical power system. We modified and launched EMS for microgrid but the cost was expensive and the system was large size. For releasing this system from industry as a whole, it is imperative to develop PMS(Power Management System) for microgrid. However, the cost of EMS for microgrid is expensive, some systems because it is a large development of the all of the first fruits in urgent PMS(Power Management System) for microgrid to be used in industry in general. Therefore, in this paper, we propose the ESS model considering the power systems characteristics and extensibility in korea. and also we propose the PMS to manage the ESS systems.

Design and Verification of Advanced Distribution Management System using Information and Communication Convergence Technology (ICT융복합 기술을 이용한 차세대 배전계통 운영 시스템 설계 및 검증)

  • Kim, Dongwook;Park, Youngbae;Chu, Cheolmin;Jo, Sungho;Seo, Inyong
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.15 no.4
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    • pp.19-29
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    • 2019
  • Recently, with the rise of environmental issues and the change of government policy (Renewable Energy 3020 Implementation Plan), a large amount of renewable energy such as solar and wind power is connected to the power system, and most of the renewable energy is concentrated in the power distribution network. This causes many problems with the voltage management and the protection coordination of the grid due to the its intermittent power generation. In order to effectively operate the distribution network, it is necessary to deploy more intelligent terminal devices in the field to measure the status of the distribution network and develop various operation functions such as visualization and big data analysis to support the power distribution system operators. In addition, the failover technology must be supported for the non-stop operation of the power distribution system. This paper proposes the system architecture of new power distribution management system to cope with high penetration of renewable energy. To verify the proposed system architecture, the functional unit test and performance measurement were performed.

Geographic Information System for Developing Advanced Distribution Management System (차세대 배전지능화시스템 개발을 위한 지리정보시스템 적용)

  • Kim, DongWook;Cho, SungHo;Seo, Hojin;Park, YoungBae
    • KEPCO Journal on Electric Power and Energy
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    • v.5 no.2
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    • pp.67-74
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    • 2019
  • Recently, as the renewable distributed energy resources has increased, the variability within the electrical power distribution system has increased, so that there is a growing concern about the stable electrical power distribution system. For efficient management of future electrical power distribution system, it is necessary to improve the electrical power distribution system operation using new visualization technology. In this paper, we describe the current status of GIS introduction and related technology trends in the field of electrical power distribution, and analyze the necessity of GIS system for electrical power distribution system operation and problems to be solved when introducing GIS technology.

Power Management of Open Winding PM Synchronous Generator for Unbalanced Voltage Conditions

  • EL-Bardawil, Ashraf;Moussa, Mona Fouad
    • Journal of Power Electronics
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    • v.16 no.6
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    • pp.2192-2201
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    • 2016
  • Wind energy is currently the fastest-growing electricity source worldwide. The cost efficiency of wind generators must be high because these generators have to compete with other energy sources. In this paper, a system that utilizes an open-winding permanent-magnet synchronous generator is studied for wind-energy generation. The proposed system controls generated power through an auxiliary voltage source inverter. The VA rating of the auxiliary inverter is only a fraction of the system-rated power. An adjusted control system, which consists of two main parts, is implemented to control the generator power and the grid-side converter. This paper introduces a study on the effect of unbalanced voltages for the wind-generation system. The proposed system is designed and simulated using MATLAB/Simulink software. Theoretical and experimental results verify the validity of the proposed system to achieve the power management requirements for balanced and unbalanced voltage conditions of the grid.

Development of a Power Management System for Efficient Power usage of Intelligent Ship (지능형 선박의 효울적인 전력사용을 위한 전력 관리 시스템 개발)

  • Park, Ji-Sang;Jeon, Min-Ho;Lee, Myung-Eui
    • Journal of Advanced Navigation Technology
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    • v.17 no.6
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    • pp.609-615
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    • 2013
  • As with any ships, adequate power provision is crucial, especially on the ocean navigating ships far from the land. In order to resolve the effective and economic power supply system of any ship in operation, in this paper, we propose a power management system that intelligently controls the power supply in ships. Power management systems in this design consist of a power load detection system, a generator configuration system, and a power monitoring system respectively. The CT / PT sensor is used to measure amount of current and power in the power detection system, and according to the collected information from various sensor, the generator configuration system will switch on and off the main / sub generator effectively. Finally, the power monitoring system will display all status information of this power management system at a glance for users. This power management systems implemented in this paper is evaluated via real-time experiments, which works well as designed, and certified by KSCIEC61892-1:2012 and KSCIEC60950-1:2008.

Implementation of Electricity Power Management System for Industries based on USN (USN 기반의 산업용 전력관리시스템 구현)

  • Kim, Min-Ho;Lee, Nam-Gil
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.12 no.4
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    • pp.103-109
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    • 2012
  • In this paper, We suggest electricity power management system which makes a good efficient and minimize wasteness of electricity power. We made electricity power management system based USN(Ubiquitous Sensor Network) for industries, factories, public offices and so on, with optimized system. Simply, we can measure and control electricity power as we plug it outlets. This system can monitor and control electricity power, organizing network of PLC(Power Line Communication) and TCP/IP with the sensor for electricity power. Through the acquisition data, this proposed system can manage and save the electricity power efficiently and also we can connect this system to server, anytime, anywhere with Android phone.