• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2010년도 추계학술대회
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• pp.240-243
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• 2010

Smart Phone 보급이 확산되면서 인터넷 PC를 대체하는 모바일 통신으로 활용되고 있다. Smart Phone은 기존의 전력망과 IT가 융합된 Smart Grid에도서 업무용으로 사용되고 있다. 따라서 Smart Phone을 통한 Smart Grid 네트워크 접속에서 접속과 제어에 대한 보안 취약점과 Smart Grid 네트워크에 대한 취약점에 대한 연구가 필요하다. 본 논문에서는 Smart Phone을 사용하여 Smart Grid 네트워크를 통한 전력망 시스템에 접근할 때의 접속 취약점에 대한 연구를 한다. 또한 Smart Phone을 사용하여 Smart Grid 네트워크에 접속 한 후에 전력정보, 통제정보, 개인정보 등에 대한 접근 권한을 탈취 가능성에 취약성을 분석하여 발생하는 문제점과 대해 연구한다. 그리고 Smart Phone을 통한 Smart Grid 네트워크 보안 취약점에 대한 보안 강화를 위한 연구 방향을 제시하고자 한다.

• 한국전자통신학회논문지
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• 제5권5호
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• pp.477-486
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• 2010

본 논문은 스마트그리드 전력망과 정보통신망의 이원화된 별도의 망을 하나의 통신체제로 재구성하고 스마트그리드 융합 정보통신망을 구현하기 위한 보안 방향과 향후 사이버 공격으로부터 방어를 위한 네트워크를 3단계 주요 핵심 망으로 재구성 및 기존 정보통신망 구성 계층인 TCP/IP Layer 4계층과 전력망과의 계층적 분리를 통한 방어 방향을 제안하고 있다. 또한 현재 스마트그리드 전력망의 문제점과 취약성 그리고 3가지 보안 모델을 제안함으로써 연구와 실험을 위한 기반을 제안하고 있다. 미래지향적인 전력산업의 한 기술로써 발전 방향과 현황을 제시하고 본 논문을 통하여 TCP/IP Layer별 공격과 방어를 전력망과 융합하고 새로운 스마트그리드 전력통신망 기술과 시장의 발전방향 및 스마트그리드 향후 정보보안 과제를 알아보는데 의의가 있다.

• 디지털산업정보학회논문지
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• 제12권4호
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• pp.41-49
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• 2016

Smart Grid is a next generation of new power growth electrical grid which provide high quality of electrical service by using Information Technologies to increase intelligence and performance. By using Smart Grid system, it can support energy management such as increase quality of electrical power, decrease energy and decrease emissions. However, Smart Grid uses information of energy consumption and when Smart Grid collects information, it will create private information. In this thesis, it will address issues of security private information which caused by Smart Grid for administrative measure and efficiency of Smart Grid in domestic. Also, cryptographic module algorithm, latest security solutions and strong wireless security policy for network environment such as wireless communication Iinternet are require for Smart Grid perform successfully and protect national power network equipment from cyber-attack and can stop leakage of user's personal information. Finally, it is urgent to prepare protection measures of National industrial facilities and power grid which can prepare for a cyber terrorism and penetration attacks and build emergency countermeasure management team for Smart Grid are require for safe Smart Grid environment.

• 한국정보통신학회논문지
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• 제25권3호
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• pp.440-448
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• 2021

본 논문은 스마트 그리드 환경에 사용되는 네트워크 기술의 문제점을 제시하고, 이를 해결하기 위해 블록체인 기반의 LoRa 멀티홉 네트워크를 제안하고 구현한다. 스마트 그리드는 다양한 환경에 구축되어 운영되기 때문에 인터넷 인프라 구축이 불가능한 경우가 있다. 저자는 Flooding 라우팅 프로토콜을 사용한 멀티홉으로 LoRa 네트워크를 제안한다. 스마트 그리드 환경은 응용에 따라 다양한 전력망 프로토콜을 사용하는 독립적인 네트워크를 구성한다. 이는 네트워크마다 독립적인 인프라를 구축해야 한다는 문제가 있다. 이를 하나의 게이트웨이 장치가 다중 전력망 프로토콜을 지원하여 네트워크 통합이 가능한 방법을 구현한다. 마지막으로 스마트 그리드 환경에서 데이터의 무결성을 보장하기 위해 하이퍼레저 기반의 블록체인을 LoRa 네트워크에 적용하고 물리적으로 분산하여 보안성을 강화하였다. 세 가지 제안사항을 실제 테스트베드에 구축 후 실험을 통해 네트워크가 정상적으로 동작함을 확인하였다.

• International Journal of Computer Science & Network Security
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• 제22권12호
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• pp.29-36
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• 2022

Smart grid (SG) software platforms and communication networks that run and manage the entire grid are increasingly concerned about cyber security. Characteristics of the smart grid networks, including heterogeneity, time restrictions, bandwidth, scalability, and other factors make it difficult to secure. The age-old strategy of "building bigger walls" is no longer sufficient given the rise in the quantity and size of cyberattacks as well as the sophisticated methods threat actor uses to hide their actions. Cyber security experts utilize technologies and procedures to defend IT systems and data from intruders. The primary objective of every organization's cybersecurity team is to safeguard data and information technology (IT) infrastructure. Consequently, further research is required to create guidelines and methods that are compatible with smart grid security. In this study, we have discussed objectives of of smart grid security, challenges of smart grid security, defensive cybersecurity techniques, offensive cybersecurity techniques and open research challenges of cybersecurity.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제17권6호
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• pp.1689-1705
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• 2023

To deal with the potential XSS vulnerabilities in the source code of the power communication network, an XSS vulnerability detection method combining the static analysis method with the dynamic testing method is proposed. The static analysis method aims to analyze the structure and content of the source code. We construct a set of feature expressions to match malignant content and set a "variable conversion" method to analyze the data flow of the code that implements interactive functions. The static analysis method explores the vulnerabilities existing in the source code structure and code content. Dynamic testing aims to simulate network attacks to reflect whether there are vulnerabilities in web pages. We construct many attack vectors and implemented the test in the Selenium tool. Due to the combination of the two analysis methods, XSS vulnerability discovery research could be conducted from two aspects: "white-box testing" and "black-box testing". Tests show that this method can effectively detect XSS vulnerabilities in the source code of the power communication network.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권3호
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• pp.1510-1532
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• 2017

In smart grid, privacy implications to individuals and their families are an important issue because of the fine-grained usage data collection. Wireless communications are utilized by many utility companies to obtain information. Network coding is exploited in smart grids, to enhance network performance in terms of throughput, delay, robustness, and energy consumption. However, random linear network coding introduces a new challenge for privacy preserving due to the encoding of data and updating of coefficients in forwarder nodes. We propose a distributed privacy preserving scheme for random linear network coding in smart grid that considers the converged flows character of the smart grid and exploits a homomorphic encryption function to decrease the complexities in the forwarder node. It offers a data confidentiality privacy preserving feature, which can efficiently thwart traffic analysis. The data of the packet is encrypted and the tag of the packet is encrypted by a homomorphic encryption function. The forwarder node random linearly codes the encrypted data and directly processes the cryptotext tags based on the homomorphism feature. Extensive security analysis and performance evaluations demonstrate the validity and efficiency of the proposed scheme.

• 전기학회논문지
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• 제62권10호
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• pp.1368-1375
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• 2013

The Smart Grid, which can monitor or diagnose the power grid in real time to operate efficiently, has been pushed ahead systematically as one of alternatives to solve these issues by combining the advanced Information Communication Technology and the electrical network. Hence, the electric company which introduces smart grid technology can read remotely the electrical meter readings by means of two-way communication between the meter and the central system. This enabled the customer and the utility to take part in reasonable electrical energy utilization. AMI became one of the core foundations in realizing the Smart Grid. It is hard to test the entire process of AMI system before the full deployment because it covers the broad objects from the customer to the utility operation system and requires mass data handling and management. Therefore, we design an efficient AMI network model and a simulator for performance evaluation required to simulate the network model similar to the real environment. This tool supports to evaluate the efficiency of the AMI network equipments and deployment. Additionally, it estimates the appropriate number of deployments and the proper capabilities.

• 기술사
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• 제42권6호
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• pp.36-41
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• 2009

Smart Grid is grafting IT(information technology) techniques on existing electric power network, supplier and the consumer to do real-time exchange of information lead to both direction and energy efficiency optimization, it is a next potential electric power network method. Because of applying various distributed electric power sources, the electric power network system will follow in size and it is dispersive and it will operate independently, and it become the intelligent electric power network, which in consumer demand reacts at real-time, because of using various sensors. In this article explain concept, features, and contemporary background of Smart Grid, and describe improve reliability of the electric power quality.

• Journal of Multimedia Information System
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• 제1권2호
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• pp.111-118
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• 2014

The Smart grid refers to the technology that enables efficient usage of electric power by collecting information concerning the power usage and power lines grafting information and communications technology to onto power grids. There are Zigbee, PLC or IEEE 802.11 WLAN MAC as a core technology of the Smart grid, but in this paper, the discussion is focused on the PLC. The PLC is the technology that carries out data communications using power lines and put into practical use in the field of lights or home appliances control recently but PLC-applied communications between electronic devices are rarely seen. For the reason that the PLC uses high-voltage power lines and has a disadvantage of experiencing higher data loss rate caused by the noises produced by going through transformers, the technology is yet to be used in many areas. Nevertheless, the PLC has been studied widely recently in respect that it's the low-cost communication solution for the Smart Metering [1]. Moreover, this technology is emerging as a novel data communication method and discussed as an important technology lately due to the developments of the Smart grid systems and Internet of things (IoT). Thus, in this paper, the results obtained from designing and performing implementation scenario for the PLC-based Smart grid home network system were compared and analyzed with that of IEEE 802.11 WLAN MAC (the foundation technology at Jeju Smart grid Test bed)-based Smart grid home network. Thus, in this paper, OPNET 14.5 PL8, OSI 7 layer, PLC router nodes and PLC nodes had been used for the designing and implementation simulations of both systems. Additionally, QoS was not considered in order to guarantee that all the traffics would not have the same processing priority.