• Title/Summary/Keyword: smart substation

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The Integrated SCADA Data Gateway Platform based on SmartGrid (스마트 그리드 기반 통합 SCADA Data Gateway 플랫폼)

  • Song, Byung-Kwen
    • Journal of IKEEE
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    • v.18 no.1
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    • pp.140-145
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    • 2014
  • OPC UA(IEC62541) is a communication protocol for SG(Smart Grid) application platform. It was standardized by IEC TC57 group in December 2012. The IEC61850 has been used in Digital Substation Systems and Smart Distributed Systems. The DNP3.0 has been used for device's data collection/control in Distributed Systems. The DLMS/COSEM has been used to control metering and collect information in the Smart Metering. The top-level SG management platform needs an independent middleware to manage transparently the Power Information Technology, including the IEC61850, DNP3.0, DLMS/COSEM. In this paper, we propose the SDG(Scada Data Gateway) platform. It manages Power Information Technology based Digital Substation Systems and Smart Distributed systems, Smart Metering through OPC UA.

Introduction of The First Demonstration Project for the Application of HTS Cable and SFCL to Real Smart Grid in South Korea (22.9kV 고온 초전도 케이블.초전도 한류기 스마트 그리드 적용을 위한 초전도 시범사업)

  • Yang, B.;Park, J.;Lee, S.
    • Progress in Superconductivity and Cryogenics
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    • v.12 no.3
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    • pp.34-38
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    • 2010
  • Until now some countries including South Korea have made big progress and many efforts in the development of high temperature superconductor (HTS) power equipments. Especially, HTS Cable and superconducting fault current limiter (SFCL) are the strongest candidates among them from the viewpoint of applying to real grid. In South Korea, HTS cable and SFCL have been installed in test fields and tested successfully at Gochang PT Center of KEPCO. In order to meet practical requirements and be feasible in real grid, a demonstration project for HTS cable and SFCL systems, called GENI(green superconducting electric power network at Icheon substation) project, has been initiated to install 23kV HTS cable and SFCL systems in a utility network in South Korea since 2008. Namely, it says the first demonstration project for the application HTS system to real smart grid in South Korea. This paper presents the design and the application plan of the 22.9kV HTS cable and SFCL in 154kV Icheon substation in South Korea with the viewpoint of applying in Smat Grid.

Design and Implementation of NSM based Security Management System in Smart Grid (스마트그리드 전력망의 NSM 기반 보안관리시스템 설계 및 구현)

  • Chang, Beom Hwan
    • Journal of Korea Society of Digital Industry and Information Management
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    • v.9 no.3
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    • pp.107-117
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    • 2013
  • In this paper, we designed the security management system based on IEC 62351-7 in the Smart Grid environment. The scope of IEC 62351-7 focuses on network and system management (NSM) of the information infrastructure as well as end-to-end security through abstract NSM data objects for the power system operational environment. However, it does not exist that security management system based on IEC 62351-7 manages the security of the power system in the Smart Grid environment, because power equipment or SNMP agents providing NSM data do not exist yet. Therefore, we implemented the security management system to manage the information infrastructure as reliably as the power system infrastructure is managed. We expect that this system can perform the security management of IEC 61850 based digital substation and can be a prototype of the security system for the Smart Grid in the future.

Survey on Magnetic Field around Substations and Proposals to Broaden Understanding of the Magnetic Field Characteristics (변전소 주변 자계 실태조사 및 자계 특성이 이해증진 방안)

  • Rhee, Seong-Su;Shin, Heon-Shik
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.20 no.6
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    • pp.526-534
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    • 2009
  • The magnetic field of the extremely low frequency that occurs in the substation facilities was surveyed to present ways to broaden understanding of the magnetic field characteristics. We have investigated the level of the magnetic fields in the substation areas and control rooms of 25 substations in the metropolitan area in accordance with the measurement method of IEC CISPR(IEC/TC106 PT 62110). We propose objective and reliable policy approaches such as the electromagnetic field certification system to more accurately understand the property of magnetic field.

Estimation of Electrical Loads Patterns by Usage in the Urban Railway Station by RNN (RNN을 활용한 도시철도 역사 부하 패턴 추정)

  • Park, Jong-young
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.67 no.11
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    • pp.1536-1541
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    • 2018
  • For effective electricity consumption in urban railway station such as peak load shaving, it is important to know each electrical load pattern by various usage. The total electricity consumption in the urban railway substation is already measured in Korea, but the electricity consumption for each usage is not measured. The author proposed the deep learning method to estimate the electrical load pattern for each usage in the urban railway substation with public data such as weather data. GRU (gated recurrent unit), a variation on the LSTM (long short-term memory), was used, which aims to solve the vanishing gradient problem of standard a RNN (recursive neural networks). The optimal model was found and the estimation results with that were assessed.

154kV Main TR. Bay IED Based On IEC 61850 (IEC 61850 기반의 154kV M.Tr Bay IED 적용 사례)

  • Roh, Jae-Keun;Oh, Jae-Hoon;Yang, Hang-Jun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.11
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    • pp.2028-2034
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    • 2011
  • Substation Automation System (SAS) based on IEC 61850 is becoming more and more reality in applying power systems. As well, the development of various engineering tools and the convergence with diagnostic systems are underway. To reflect recent advancements in SAS technology, the Korea Electric Power Corporation initiated a 154kV SAS pilot project and a smart power grid business in 2010. In this paper, the authors will summarize the overview and the lessons learned in applying the IEC 61850-based 154kV Main transformer bay IED solutions to these two project.

Specifications of 22.9kV HTS cables and FCLs considering protection systems in Korean power distribution system (국내계통 보호시스템을 고려한 22.9kV 초전도케이블/한류기 설계사양 제안)

  • Lee, Seung-Ryul;Park, Jong-Young;Yoon, Jae-Young;Lee, Byong-Jun;Yang, Byeong-Mo
    • Progress in Superconductivity and Cryogenics
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    • v.11 no.3
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    • pp.50-54
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    • 2009
  • In Korea, 22.9kV 50MVA HTS (High Temperature Superconducting) cables and 630A/3kA hybrid SFCLs (Superconducting Fault Current Limiters) have been or are being developed by LS Cable, LS Industrial System, and Korea Electric Power Research Institute. They will be installed at Icheon 154kV Substation for real-power-distribution-system operation in 2010. This paper proposes specification of current limiting resistor/reactor for the SFCL and fault current condition of the HTS cable for applying the superconducting devices to Korean power distribution system, from the viewpoint of power system protection.

Performance inspection of smart superconducting fault current controller in radial distribution substation through PSCAD/EMTDC simulation

  • MassoudiFarid, Mehrdad;Shim, Jae Woong;Lee, Jiho;Ko, Tae Kuk
    • Progress in Superconductivity and Cryogenics
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    • v.15 no.4
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    • pp.21-25
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    • 2013
  • In power grid, in order to level out the generation with demand, up-gradation of the system is occasionally required. This will lead to more fault current levels. However, upgrading all the protection instruments of the system is both costly and extravagant. This issue could be dominated by using Smart Fault Current Controller (SFCC). While the impact of Fault current Limiters (FCL) in various locations has been studied in different situations for years, the performance of SFCC has not been investigated extensively. In this research, SFCC which has adopted the characteristics of a full bridge thyristor rectifier with a superconducting coil is applied to three main locations such as load feeder, Bus-tie position and main feeder location and its behavior is investigated through simulation in presence and absence of small Distributed Generation unit (DG). The results show a huge difference in limiting the fault current when using SFCC.

Designs of the Unified Information Model-IEC61850/IEC61970 and Topology Model for Smart Grid (스마트 그리드 망을 위한 IEC61970/IEC61850 통합 정보 모델과 토폴로지 모델 설계)

  • Yun, Seok-Yeul;Yim, Hwa-Young
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.1
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    • pp.28-33
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    • 2012
  • The smart grid, which is an integrated type of the power system and the digital network, requires the integration of a CIM(Common Information Model) standard for information modelling at the power control centers and an IEC 61850 standard for automation at the substation level in order to efficiently exchange the information between system elements. This paper describes the method of data transfer from one standard information model to the other standard unified information model by mapping between the objects of IEC 61850 and IEC61970 CIM standards both in the static and dynamic models, and designs the method of data transfer and information exchange between the topology processing application using unified topology class packages.

Research on Protocol Conversion Gateway based on IEEE1815.1 (IEEE 1815.1 기반 이기종 프로토콜 변환 게이트웨이 기술 연구)

  • Lee, Seokjun;Kwon, Sungmoon;Shon, Taeshik;Park, Sungwan
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.26 no.5
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    • pp.1201-1209
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    • 2016
  • While the legacy electric grid evolving into the smart grid, various communication standards have been used for interoperability between many components. In this situation, the needs emerged for protocol conversion and mapping method for connecting the outside components to the operation center. In this paper, according to the surge of IEC 61850-based substation automation, we studied the protocol conversion gateway for linking legacy DNP3-based control center and IEC 61850-based substation automation. This paper is based on the IEEE 1815.1 standard for the protocol mapping. We suggested the direction of development the gateway and developed prototype for evaluate the proposed gateway. Also, we bring up a security problem and give a solution.