• Title, Summary, Keyword: Smart Grid

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Electricity Market Design for the Incorporation of Various Demand-Side Resources in the Jeju Smart Grid Test-bed

  • Park, Man-Guen;Cho, Seong-Bin;Chung, Koo-Hyung;Moon, Kyeong-Seob;Roh, Jae-Hyung
    • Journal of Electrical Engineering and Technology
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    • v.9 no.6
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    • pp.1851-1863
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    • 2014
  • Many countries are increasing their investments in smart grid technology to enhance energy efficiency, address climate change, and trigger a green energy revolution. In addition to these goals, Korea also seeks to promote national competitiveness, prepare for the growth of the renewable energy industry, and export industrialization through its strategic promotion of the smart grid. Given its inherent representativeness for Korean implementation of the smart grid and its growth potential, Jeju Island was selected by the Korean government as the site for smart grid testing in June 2009. This paper presents a new design for the electricity market and an operational scheme for testing Smart Electricity Services in the Jeju smart grid demonstration project. The Jeju smart grid test-bed electricity market is constructed on the basis of day-ahead and real-time markets to provide two-way electricity transaction environments. The experience of the test-bed market operation shows that the competitive electricity market can facilitate the smart grid deployment in Korea by allowing various demand side resources to be active market players.

A Security Design for a Smart Power Grid Field Test based-on Power IT Systems (전력 IT 기반스마트 파워그리드 실증 보안 체계 설계)

  • Lee, Myung-Hoon;Bae, Si-Hwa;Son, Sung-Yong
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.14 no.11
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    • pp.2497-2506
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    • 2010
  • Smart power grid is targeting to improve grid operation by integrating existing power IT technologies in the jeju smart grid field test. Real-time two-way communication and interoperability in power grid are essential to smart power grid. Adopting smart grid will increase security vulnerabilities in power grid by increasing the number of wireless sensors and the chances of the external exposure of communication networks. In addition, hackers can cause chaos in the power grid system with eavesdropping and forgery attacks in communication networks. Smart power grid is one of the most important systems in deploying smart grid, and it is important to design security system systematically since smart grid can be seriously damaged when problem occurs. In this paper, local and global smart grid security standard and security vulnerabilities in power grid are reviewed, and 2 level smart grid service model is proposed.

A Study on the Effective Downscaling Methodology for Design of a Micro Smart Grid Simulator

  • Ko, Yun-Seok
    • Journal of Electrical Engineering and Technology
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    • v.13 no.4
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    • pp.1425-1437
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    • 2018
  • In this paper, a methodology was proposed to reduce the electrical level and spatial size of the smart grid with distributed generations (DGs) to a scale in which the electrical phenomena and control strategies for disturbances on the smart grid could be safely and freely experimented and observed. Based on the design methodology, a micro smart grid simulator with a substation transformer capacity of 190VA, voltage level of 19V, maximum breaking current of 20A and size of $2{\times}2m^2$ was designed by reducing the substation transformer capacity of 45MVA, voltage level of 23kV and area of $2{\times}2km^2$ of the smart grid to over one thousandth, and also reducing the maximum breaking current of 12kA of the smart grid to 1/600. It was verified that the proposed design methodology and designed micro smart grid simulator were very effective by identifying how all of the fault currents are limited to within the maximum breaking current of 20A, and by confirming that the maximum error between the fault currents obtained from the fault analysis method and the simulation method is within 1.8% through the EMTP-RV simulation results to the micro smart grid simulator model.

Vulnerability Analysis and Security Measures according to Smart Grid Attack Case (Smart Grid 공격 사례와 취약점 분석 및 보안대책)

  • Chun, Woo-Sung;Park, Dea-Woo
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.75-77
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    • 2011
  • Smart Grid는 전기망과 정보통신망이 융합된 형태로 발전 송전 배전의 전 과정에 대한 통제가 가능하고, 결과적으로 에너지 사용의 효율성을 높이고자 하는 것이 지능형 전기망이다. 정보통신망을 이용하기 때문에 기존의 다양한 사이버 보안위협으로부터 그대로 노출되어 있으며, 전기망에서의 취약점도 함께 가지고 있다. 본 논문에서는 우리나라보다 먼저 Smart Grid를 도입한 나라의 Smart Grid 공격 사례와 예상 공격에 대한 취약점을 분석하고, 분석된 취약점에 대한 Smart Grid 보안 대책을 마련한다. 본 연구를 통해 Smart Grid에 대한 보안성 강화와 사회안정성 향상에 기여하게 될 것이다.

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A Study on Offensive and Security Method about Smart Meter in Smart Grid (Smart Grid에서 사용되는 Smart Meter에 대한 공격 및 보안 방법 연구)

  • Lee, Jae-Hyun;Park, Dea-Woo
    • Proceedings of the Korean Society of Computer Information Conference
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    • pp.111-113
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    • 2011
  • 우리나라에서도 2010년 1월 25일 지식경제부의 "Smart Grid 로드맵" 확정으로 Smart Grid 사업이 진행 중이다. 그러나 정보통신 환경에서 발생하고 있는 다양한 공격에 대한 보안위협이 Smart Meter에서도 발생하고 있다. 따라서 본 논문에서는 Smart Grid에 사용되는 Smart Meter 공격을 분석하고 Smart Meter 방어 방안을 제시한다.

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A Study on Key Influencing Factors in Smart Grid Consumer Engagement (스마트그리드 소비자 수용성 요인 연구)

  • Kim, Hyun-Jae;Park, Ji Hyeon;Bak, Chan-Kook
    • Informatization Policy
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    • v.19 no.1
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    • pp.91-106
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    • 2012
  • We should set up a policy objective to obtain consumer engagement in smart grid and analyze the key influencing factors in smart grid consumer engagement in oder to deploy smart grid successfully. It is because the successful deployment of smart grid depends on whether the end users accept the smart grid products and services. So far, There have been few studies in Korea which focus on the smart grid consumer engagement. Therefore, we carried out an literature review in terms of smart grid consumer engagement and tried to suggest related policy implications. As a result, we identified key influencing factors such as monetary benefits, environment-friendly characteristics, cyber security and understanding of smart grid. Futhermore, we suggested policy implications related to customer education, linkage between smart grid policies and other environmental ones, cyber security enhancement, etc.

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Biform Game Based Cognitive Radio Scheme for Smart Grid Communications

  • Kim, Sungwook
    • Journal of Communications and Networks
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    • v.14 no.6
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    • pp.614-618
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    • 2012
  • Smart grid is widely considered to be a next generation power grid, which will be integrated with information feedback communications.However, smart grid communication technologies are subject to inefficient spectrum allocation problems. Cognitive radio networks can solve the problemof spectrumscarcity by opening the under-utilized licensed bands to secondary users. In this paper, adaptive cognitive radio spectrum sensing and sharing algorithms are developed for smart grid environments. Simulation results are presented to demonstrate the effectiveness of the proposed scheme in comparison with other existing schemes.

Framework Based Smart City Cyber Security Matrix (프레임워크 기반 스마트시티 사이버 보안 메트릭스)

  • Kim, Sung-Min;Jung, Hae-Sun;Lee, Yong-Woo
    • Journal of the Korean Society of Industry Convergence
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    • v.23 no.2_2
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    • pp.333-341
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    • 2020
  • In this paper, we introduce a smart city-cyber-security-grid-matrix methodology, as a result of research on overall cyber security of smart cities. The identified cyber security risks that threaten smart cities and smart-city-cyber-security-threat list are presented. The smart-city-cyber-security-requirements necessary to secure the smart city cyber security with the developed smart city-cyber-security-grid-matrix are given in this paper. We show how the developed smart city-cyber-security-grid-matrix methodology can be applied to real world. For it, we interlocked the developed smart city-cyber-security-grid-matrix methodology with the cyber-security-framework of the National Institute of Standards and Technology, and developed a framework-based smart city-cyber-security-grid-matrix. Using it, it is easy and comfortable to check the level of cyber security of the target smart ciy at a glace, and the construction and operation of the smart city security system is systematized.

A Direction of Convergence and Security of Smart Grid and Information Communication Network (스마트그리드(Smart Grid) 전력망과 정보통신망 융합 보안 방향)

  • Seo, Woo-Seok;Jun, Moon-Seog
    • The Journal of the Korea institute of electronic communication sciences
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    • v.5 no.5
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    • pp.477-486
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    • 2010
  • This Study suggests security directions to reconstruct separate network of Smart Grid and information communication network as one communications system and implement Smart Grid integrated information communication network. In addition, it suggests prevention directions to prevent future cyber attacks by reorganizing network as the key three-stage network and separating TCP/IP four layers that consist of existing information communication network from Smart Grid. Moreover, it suggests the foundation for the study and the test by providing current problems of Smart Grid, weak points, and three security models. This study is meaningful to suggest development directions and situations as a technology of future-oriented electric industries, integrate attacks and preventions of TCP/IP Layers with Smart Grid, and seek for a new technology of Smart Grid and future tasks for Smart Grid information security.