• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.6
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• pp.1183-1194
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• 2021

Traditionally, electric power systems have been known as the centralized structures, which is organized into placing customers at the end of the supply chain. However, recent decades have witnessed the emergence of distributed energy resources(:DERs) such as rooftop solar, farming PV system, small wind turbines, battery energy storage systems and smart home appliances. With the emergence of distributed energy resources, the role of distributed system operators(:DSOs) will expand. The increasing penetration of DERs could lead to a less predictable and reverse flow of power in the system, which can affect the traditional planning and operation of distribution and transmission networks. This raises the need for a change in the role of the DSOs that have conventionally planned, maintained and managed networks and supply outages. The objective of this research is to designed the future distribution operation system with multi-DERs and the proposed distribution system model is implemented by hardware-in-the-loop simulation(HILS). The test results show the normal operation domain and reduction of distribution line loss.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.26 no.2
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• pp.415-423
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• 2016

Smart grid systems can be real-time information exchange between suppliers and consumers, and provides a lot of convenience. However, the risk to the user's personal information exposure is ever-present. Depending on the characteristic of the smart grid environment, there is a threat of the disclosure of personal information based on the personal information life-cycle, and can also be exposed a variety of information based on energy consumption pattern analysis. In this paper, we analyze the existing privacy act in the smart grid and propose improvements for the existing directive.

• Information Systems Review
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• v.12 no.1
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• pp.189-207
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• 2010

We applied IT ecosystem analysis to Smart Grid system in this paper and thereby compared various arguments about Smart Grid technologies against the reality of the power generation and distribution in South Korea with a special attention to the power distribution side. Our work attempts to propose policy implications in the government-level based on a firm-level analysis using the framework of the competitive strategy and advantage. The Smart Grid initiative is expected to enhance the efficiency in the power generation and distribution. In addition, the Smart Grid initiative aims at capturing the opportunities in the electric power business such as parts, components, supplies, and system products in the global arena. Prerequisites of smart distribution system include building infrastructure based on smart distribution parts, information systems, communication technologies, and developing various application programs and interfaces that would interact with the consumers. Consumers are expected to play an integral role by changing their consumption patterns in response to dynamic pricing and quality choices enabled by the smart distribution technologies. In order to induce the consumers to participate actively in the program, firms and policy makers should consider providing consumers economic incentives and proper education for better understanding of new technologies. Our work helps policy makers and firm better understand the nature of technology and stakeholders for the successful implementation of smart distribution technologies.

• Smart Media Journal
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• v.11 no.1
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• pp.67-80
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• 2022

Smart City Technology, which is significant in the era of the 4th industrial revolution, greatly increases the efficiency and productivity of cities nowadays. The purpose of this study is to present a strategic approach for industrial revitalization and overseas export by analyzing the current status of smart city-related companies and discovering high-priority smart city technologies. To this end, the smart city theory and ASEAN smart city were reviewed through prior research, and a survey of companies with domestic smart city technology was conducted. As a result of the survey, it is revealed that companies with smart city technology in Korea are highly willing to export to ASEAN countries. There is a strong desire to export the following technologies: construction, traffic, green·energy, etc. And there was a high willingness to export the following services: IoT, platform, AI, etc. The following solutions have been proposed as solutions to Strategic Plans to Promote the Export: 1) Deregulation and incentives, 2) Global human resource development, 3) Information provision and strengthening of local networks, 4) Financial and public relations support.

• 한국신재생에너지학회:학술대회논문집
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• 2010.06a
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• pp.146.1-146.1
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• 2010

최근 전력 수요의 증가와 지구 온난화 문제가 화두가 되면서 피크 전력관리와 스마트 그리드의 필요성이 강조되고 있다. 이들을 구현하기위해 반드시 필요한 것이 에너지 저장 시스템이다. 본 발표는 배터리 에너지 저장 시스템에 사용되는 능동형 셀 발란싱 기능을 갖는 배터리 관리 시스템에 관한 것이다. 전력 에너지 저장용 배터리는 원하는 전압과 전력을 저장하기위해 단전지(Cell)들을 보통 수천 개가 직렬 병렬로 연결되어 구성된다. 배터리팩을 구성하는 단전지 한 개의 용량이 다른 단전지 보다 크거나 작던지 또는 한 개의 단전지에 문제가 생기면 배터리팩 전체의 성능이 저하되든가 또는 사용 할 수가 없게 된다. 따라서 배터리팩을 구성 할 때는 용량이 동일 한 단전지들을 사용한다. 에너지 저장용 배터리팩에는 수백 와트의 단전지 들이 사용되므로 에너지 저장용 배터리팩을 위한 단전지 생산에는 많은 어려움이 있다. 능동형 셀 발란싱 기술을 사용 하면 이러한 배터리팩의 문제를 해결 할 수 있어 셀 제조원가를 절감 할 수 있을 뿐만 아니라 배터리팩의 가용용량을 늘릴 수 있고 또한 배터리팩의 수명을 연장 할 수 있다.

• The Magazine for Energy Service Companies
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• s.84
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• pp.8-11
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• 2013

지난 5월 28일 국무회의에서 박근혜 대통령은 "과학기술을 통한 에너지 효율성을 제고하거나 낭비를 막는 방법도 있고 스마트 그리드 같은 IT기술을 이용해서 실시간으로 자신이 얼마를 소모하는지 알려줌으로써 스스로 아껴 쓸 수 있는 방법이 있는데, 그런 방안도 적극 연구해 달라"고 당부했다. 실제로 우리 산업은 현재 ICT기술과 전력시장을 창조적으로 융합하여 새로운 시장을 형성하고, 이를 통해 신(新)성장동력, 신(新)서비스업을 육성해야 하는 시점에 직면해 있다. 전력공급에 소요되는 사회적 비용이 급증하여 빠른 속도로 증가하는 수요를 충족시키는데 많은 어려움이 있는 것도 사실이다. 늘어나는 수요에 따라 공급을 확대하는 공급중심 정책에서 합리적으로 수요를 줄인 후 공급을 확대하는 수요관리 중심의 정책으로 전환이 필요한 때이다. * 연평균 전력소비증가율('00~'10년, %) : 한국 5.3('10년 10.1), 일본 0.2, 미국 0.7, OECD 평균 1.0 최근 다각도로 전력 사용을 줄이기 위한 이벤트가 실시되고 있는데 실내온도 제한 등 일시적 절약에서 벗어나, 세계적 수준의 우리 ICT기술을 활용하여 근본적이고 시스템적인 수요관리 추진이 필요하다. 한편 전력수급 위기를 새로운 시장창출의 기회로 만드는 발상의 전환을 통해 창조경제시대의 신성장동력과 일자리를 창출하게 되는 기회가 될 수 있다. 이는 전통적인 에너지산업에 2차전지산업, 소프트웨어 산업을 융합하여 ESS, EMS, LED 등 ICT기반 에너지 신산업 시장 진출을 의미한다. 이번호에서는 ESS(Energy Storage System)라고 불리는 에너지저장장치에 대해 살펴보고자 한다.

• Journal of the Korea Society of Computer and Information
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• v.17 no.1
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• pp.61-69
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• 2012

Smart Grid is the next-generation intelligent power grid that maximizes energy efficiency with the convergence of IT technologies and the existing power grid. Smart Grid is created solution for standardization and interoperability. Smart Grid industry enables consumers to check power rates in real time for active power consumption. It also enables suppliers to measure their expected power generation load, which stabilizes the operation of the power system. Smart industy was ecolved actively cause Wireless communication is being considered for AMI system and wireless communication using ZigBee sensor has been applied in various industly. In this paper, we proposed efficient addressing scheme for improving the performance of the routing algorithm using ZigBee in Smart Grid environment. A distributed address allocation scheme used an existing algorithm has wasted address space. Therefore proposing x, y coordinate axes from divide address space of 16 bit to solve this problem. Each node was reduced not only bitwise but also multi hop using the coordinate axes while routing than Cskip algorithm. I compared the performance between the standard and the proposed mechanism through the numerical analysis. Simulation verify performance about decrease averaging multi hop count that compare proposing algorithm and another. The numerical analysis results show that proposed algorithm reduce multi hop than ZigBee distributed address assignment and another.

• Journal of the Economic Geographical Society of Korea
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• v.27 no.1
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• pp.38-52
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• 2024

Digital transformation industry contributes to the improvement of productivity in overall industrial production, the smart green industry for carbon neutrality and sustainable growth is growing as a future industry. The purpose of this paper is to explore the status and role of the industry in the future industry innovation ecosystem through the analysis of the growth drivers and location pattern changes of the smart green industry. The industry is on the rise in both metropolitan and non-metropolitan areas, and the growth of the industry can be seen in non-metropolitan and non-urban areas. In particular, due to the smart green industrial complex pilot project, the creation of Gwangju Jeonnam Innovation City, and the promotion of new and renewable energy policies, the emergence of core aggregation areas (HH type) in the coastal areas of Honam and Chungcheongnam-do, and the formation of isolated centers (HL type) in the Gyeongsang region, new and renewable energy production companies are being accumulated in non-metropolitan areas. Therefore, the smart green industry is expected to promote the formation of various specialized spokes in non-urban areas in the future industrial innovation ecosystem that forms a multipolar hub-spoke network structure, where policy factors are the triggers for growth.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.4
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• pp.28-35
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• 2012

Recently, as the social interest increase has been focused on new renewable energy system to build-up sustainable urban planning system, the related studies have been actively conducting. As well as in other areas, the construction area, which accounts for over 40% of the total energy consumption, clearly showed this tendency. Whereas, various landscape facilities applying renewable energy equipments have been manufactured and installed, systematic study available for planning and designing is rarely found in Korea. This study is expected to contribute to the landscape planning and designing by quantifying the energy-efficient and economic advantages of the renewable energy system for landscape facilities. For this purpose, the analysis on the energy-efficiency and economic values under the scenario that the current fossil power supply for the streetlights in urban parks in Seoul, Daegu, and Incheon were replaced by photovoltaic power generation were performed through RETScreen$^{(R)}$ a clean energy simulation program based on the NASA Satellite Meteorological Data. As a result, the generated power and the economic values vary depending on the climatic features of the appointed cities. This study will be used to build up the effective decision-making in applying the clean renewable system to the plan and design of landscaping.

• Science of Emotion and Sensibility
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• v.24 no.2
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• pp.25-38
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• 2021

The aim of this study is to protect workers and pedestrians from accidents at night or bad weather by attaching optical fiber to existing safety clothing that is made only with fluorescent fabrics and retroreflective materials. A safety vest was designed and manufactured by applying optical fiber, and energy-harvesting technology was developed. The safety vest was designed to emit light using the automatic flashing of optical fibers attached to the film, and an energy harvester was manufactured and attached to drive the light emission of the optical fiber more continuously. As a result, first, the vest wearer' body was recognized from a distance through the optical fiber and retroreflection, which helped prevent accidents. Thus, this concept helps in saving lives by preventing accidents during night-time work on the roadside or activities of rescue crew and sports activities, or by quickly finding the point of an accident with a signal that changes the optical fiber light emission. Second, to use the wasted energy, a piezoelectric-element power generation system was developed and the piezoelectric-harvesting device was mounted. Potentially, energy was efficiently produced by activating the effective charging amount of the battery part and charging it auxiliary. In the existing safety vest, detecting the person wearing the vest is almost impossible in the absence of ambient light. However, in this study, the wearer could be found within 100 m by the light emission from the safety vest even with no ambient light. Therefore, in this study, we will help in preventing and reducing accidents by developing smart safety clothing using optical fiber and energy harvester attached to save lives.