• 제목/요약/키워드: Power Manage System

검색결과 365건 처리시간 0.024초

태양광 발전시스템의 일사량에 따른 출력 특성 (Electric Output Characteristics According to Irradiation for Photovoltaic Systems)

  • 왕강;최용성;김향곤;이경섭
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2009년도 춘계학술대회 논문집 전기설비전문위원
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    • pp.189-191
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    • 2009
  • In this thesis, output voltage, current and power of solar module were classified by irradiation and module temperature from data of overall operating characteristics collected for one year in order to manage efficient photovoltaic generation system and deliver maximum power. In addition, from these data, correlations between irradiation, module temperature of photovoltaic cell and amount of power given by photovoltaic cell was quantitatively examined to deduce optimization of the design and construction of photovoltaic generation system. The results of this thesis can be summarized as follows. As output power characteristics according to a irradiation range of $100{\sim}900[W/m^2]$, output power was increased with increasing irradiation. This result corresponds well to the related equation on irradiation and output power.

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Heliostat 제어시스템 (Heliostat Control System)

  • 박영칠
    • 한국태양에너지학회 논문집
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    • 제29권1호
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    • pp.50-57
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    • 2009
  • Heliostat in the tower type solar thermal power plant is a mirror system tracking the sun's movement to collect the solar energy and it is the most important subsystem determining the efficiency of solar thermal power plant. Thus a good performance of it, which is mostly the accurate sun tracking performance under the various hazardous operating condition, is required. Heliostat control system is a system to manage the heliostat sun tracking movement and other operations. It also communicates with the master controller through the heliostat filed control system to receive and send the informations required to operate the heliostat as a part of the solar thermal power plant. This study presents a heliostat control system designed and developed for the 1MW solar thermal power plant. We first define the functionality of heliostat control system. Then sun tracking controller as well as the sun tracking algorithm satisfying the required functionality have been developed. We tested the developed heliostat control system and it showed a good performance in regulation of heliostat motion and communication.

전력품질 개선을 위한 발전기 부하 추종성 분석시스템 개발 (On-Line Monitoring and Analyzing System of the Load Following Capability for Generators)

  • 전종택;이효상;이현철;박흥우;권욱현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1998년도 하계학술대회 논문집 G
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    • pp.2384-2386
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    • 1998
  • In this paper, the system which can read the frequency and the power values of the generators, calculate the S.R., display the on-line graph and the off-line graph and manage the database of the generators was developed. This system should be more faster, comfortable and powerful than the present analysis method of the S.R. in real fields.

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초고층 건축물 전력관리 시스템에 BIM 적용을 위한 기초적 연구 (A Fundamental Study on Applying BIM to Power Manage System of Super Tall Buildings)

  • 조찬원;권순호;이운재;노태임;옥종호
    • 한국CDE학회논문집
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    • 제17권2호
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    • pp.140-148
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    • 2012
  • This study aims to provide power monitoring system for super tall buildings with 3D BIM (Building Information Modeling) technology. In order to realize this subject, standard specifications for BIM objects and attributes were studied through analyzing processes and elements of electrical utilities for power management systems applied for super tall buildings. These standard BIM specifications could be used by designers, contractors and facility operators, and thus could be helpful to realize BIM information sharing between multiple disciplines and construction phases. And further study has been suggested to develop standard specification and applications from this study.

DRAM&PCM 하이브리드 메모리 시스템을 위한 능동적 페이지 교체 정책 (Active Page Replacement Policy for DRAM & PCM Hybrid Memory System)

  • 정보성;이정훈
    • 대한임베디드공학회논문지
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    • 제13권5호
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    • pp.261-268
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    • 2018
  • Phase Change Memory(PCM) with low power consumption and high integration attracts attention as a next generation nonvolatile memory replacing DRAM. However, there is a problem that PCM has long latency and high energy consumption due to the writing operation. The PCM & DRAM hybrid memory structure is a fruitful structure that can overcome the disadvantages of such PCM. However, the page replacement algorithm is important, because these structures use two memory of different characteristics. The purpose of this document is to effectively manage pages that can be referenced in memory, taking into account the characteristics of DRAM and PCM. In order to manage these pages, this paper proposes an page replacement algorithm based on frequently accessed and recently paged. According to our simulation, the proposed algorithm for the DRAM&PCM hybrid can reduce the energy-delay product by around 10%, compared with Clock-DWF and CLOCK-HM.

A Dynamic Frequency Controlling Technique for Power Management in Existing Commercial Microcontrollers

  • Lueangvilai, Attakorn;Robertson, Christina;Martinez, Christopher J.
    • Journal of Computing Science and Engineering
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    • 제6권2호
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    • pp.79-88
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    • 2012
  • Power continues to be a driving force in central processing units (CPU) design. Most of the advanced breakthroughs in power have been in a realm that is applicable to workstation CPUs. Advanced power management systems will manage temperature, dynamic voltage scaling and dynamic frequency scaling in a CPU. The use of power management systems for microcontrollers and embedded CPUs has been modest, and mostly focuses on very large scale integration (VLSI) level optimizations compared to system level optimizations. In this paper, a dynamic frequency controlling (DFC) technique is introduced, to lay the foundation of a system level power management system for commercial microcontrollers. The DFC technique allows a commercial microcontroller to have minor modifications on both the hardware and software side, to allow the clock frequency to change to save power; results in this study show a 10% savings. By adding an additional layer of software abstraction at the interrupt level, the microcontroller can operate without having knowledge of the current clock frequency, and this can be accomplished without having to use an embedded operating system.

모바일 PPT를 이용한 사면 붕괴 위험도 산출 시스템 구축 (Developing slope hazard map system with mobile PPT)

  • 양승태;성은영;강영신;강인준
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2007년도 춘계학술발표회 논문집
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    • pp.367-370
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    • 2007
  • Recently, With explosive national land developments construction fields ate increasing, and slope failures are disastrous when they occur in mountainous area adjoining highways. but public institutions and supervisors, to manage slope need GIS for managing it more quickly and correctly. For manage slope, it is nesessary to use new IT, especially wireless internet. The current domestic population using cell phones exceeded 30 million and the domestic wireless Internet environment has matured, but implementation of mobile technology for government services isnot matured enough. In this paper the author proposed a new system of mobile PPT monitoring for managing slope inspection for Ubiquitous Environment. This new system manages data in real time and reduces human power when applied to current working environments. This research was supported by a grant(NEMA-06-NH-05) from the Natural Hazard Mitigation Research Group, National Emergency Management Agency.

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태양광 발전시스템의 온도에 따른 전압-전류 특성 (I-V Characteristics According to Temperature for Photovoltaic Systems)

  • 황준원;이영;최용성;이경섭
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2009년도 춘계학술대회 논문집 전기설비전문위원
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    • pp.183-185
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    • 2009
  • In this thesis, output voltage, current and power of solar module were classified by irradiation and module temperature from data of overall operating characteristics collected for one year in order to manage efficient photovoltaic generation system and deliver maximum power. In addition, from these data, correlations between irradiation, module temperature of photovoltaic cell and amount of power given by photovoltaic cell was quantitatively examined to deduce optimization of the design and construction of photovoltaic generation system. The results of this thesis can be summarized as follows. As I-Y characteristics according to a temperature range of 10$\sim$50[], the area of I-V characteristics were increased with an increase in temperature. Since this area corresponds to the power, output power is thought to have increased with temperature.

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해상풍력 발전사업의 합리적 절차를 위한 제도개선 방안 : 인허가를 중심으로 (System Improvement Measures for Rational Procedures of Offshore Wind Power Generation Projects : Focusing on Permits)

  • 강석규;문정갑;조문관
    • 수산경영론집
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    • 제54권2호
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    • pp.59-76
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    • 2023
  • This study is to propose ways to improve the system for rational procedures for offshore wind power generation projects. The results of this study are summarized as follows. In order to quickly distribute and develop offshore wind power projects, the permitting period should be shortened through special laws, the government actively intervenes to support the formation and operation of privat-public councils to ensure residents' acceptance. In this way, it can be competitive in the future energy market. Above all, a special law (proposal) related to offshore wind power currently pending in the National Assembly should be passed as soon as possible. Finally, the government and local governments that manage public waters should provide active administrative support based on system improvement measures in consideration of these permits, and the project's main body should minimize damage to the marine environment and ecosystem. Through these subject-specific roles, offshore wind power generation will be able to reduce carbon emissions and help establish a sustainable energy production system.

발전소의 실내 소음관리를 위한 소음 매핑 시스템 개발 (Development of noise mapping system to manage the interior room noise of power plants)

  • 김영일;김원진
    • 한국음향학회지
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    • 제40권1호
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    • pp.92-98
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    • 2021
  • 발전소의 실내는 규모가 크고, 위치마다 소음레벨 편차가 매우 크기 때문에 소음관리가 어렵다. 따라서 실내소음을 효과적으로 관리하기 위해서 소음분포를 분석할 수 있는 소음 가시화 시스템이 필요하다. 터빈실 내를 모델링하고, 선정된 지점의 소음레벨을 측정하여 소음지도를 작성할 수 있는 소음 매핑 시스템을 개발하였다. 그리고 모델의 신뢰성을 높이기 위하여 소음지도와 실제 소음측정 결과와 비교하는 방법을 통하여 모델을 수정하였다. 소음지도에 대한 정기적인 분석을 통하여 설비 이상을 판단할 수 있고, 특정 지점의 현재와 이전 소음에 대한 주파수 및 레벨을 비교 분석함으로써 실내소음을 효과적으로 관리하는 방법을 제시하였다. 매핑 시스템을 활용하면 근무환경을 개선할 수 있는 소음대책의 수립이 가능하고, 기계의 이상 유무를 확인하고, 예방정비를 통해 설비의 신뢰성을 높일 수 있다.