• Title/Summary/Keyword: Digital Substation

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Application study of substation automation protocol (IEC 61850) to digital relay (디지털 계전기에 변전소 자동화 프로토콜 (IEC 61850) 적용에 관한 연구)

  • Rim, Seong-Jeong;Choe, Hang-Seob;Min, Byoung-Woon;Park, Dong-Ho
    • Proceedings of the KIEE Conference
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    • 2005.07a
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    • pp.489-491
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    • 2005
  • This paper presents the application study of substation automation protocol, IEC 61850 to digital relay (HiMAP). Especially, it implements the data modeling, ACSI definition, GOOSE, MSVCB and data service required in the existing digital relay. To verify the system performance, we develop the process emulator and HiMAP emulator, and describe the results.

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On-line coordination control of OLTC and Switched Shunt for enhancement of stability using local data in substation (변전소내 지역정보를 이용하여 안정도 향상을 위한 실시간 OLTC 및 커패시터 협조제어 알고리즘)

  • Kang, Sang-Gyun
    • Journal of Korea Society of Industrial Information Systems
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    • v.17 no.7
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    • pp.119-125
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    • 2012
  • This paper suggest the on-line coordination control between on-load tap changers and Switched Shunts for ensuring the voltage stability using local data obtained from one substation. Inappropriate control of on-load tap changers that are able to maintain voltage profile might cause unintended result that is harmful to system stability, especially voltage stability. This paper utilizes Z-index that could inform the whole system condition from only one substation data. Simulation is performed using the HYPERSIM that is a digital simulator and matlab simulink to confirm the proposed algorithm.

A Study on the Testing Method of IEC 61850 based Merging Unit (IEC 61850 기반 디지털 변전시스템의 머징유닛 시험방법에 관한 연구)

  • Lee, Nam-Ho;Jang, Byung-Tae
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.8
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    • pp.41-47
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    • 2009
  • The power IT project "Development of Prototype for Advanced Substation Automation System based on the Digital Control Technology", is going on how to perform the verification of a IEC 61850 based Merging Unit for development of the full Substation Automation system from station bus to process bus. the testing method that this paper suggests, is including the conformance testing of IEC 61850 communication services and transmission functions of digital sampled values such as current and voltage, and referring to IEC 61850 conformance testing of IED. And finally, the paper shows a test system for the Merging Unit.

The Economic Analysis of IEC61850 for Substation Automation (IEC61850 변전자동화의 경제성분석)

  • Lee, Kyung-Ho
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.10a
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    • pp.255-258
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    • 2009
  • This paper gives a feasibility reference of integrating power automation for digital substation. An overview and techno-economical potential of IEC61850 are introduced. The result of economic analysis is shown to save up to one-third of the total cost of automation installation. The gained benefits can be used to increase the economy and reliability of electrical power system.

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Development of IEC 61850 Performance Testing Procedures of BUS Protection IED Using UML (UML을 이용한 모선보호 IED의 IEC 61850 성능시험 절차서 개발)

  • Lee, Nam-Ho;Jang, Byung-Tae
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.5
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    • pp.767-772
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    • 2008
  • Korea Electric Power Research Institute in charge of the power IT project "Development of Prototype for Advanced Substation Automation System based on the Digital Control Technology", is performing the verification of performance of the substation automation system. In order to verify a system based BUS protection IED, the standardized document and procedures are required. But there is nothing to describe systematically how to verify IEC 61850 based IED in the system environment except an individual IED testing way and report. This paper presents the substation automation system based ways and procedures to verify the IED using UML(Unified Modelling Language).

Development of a Substation Simulator using Real Time Digital Simulator (RTDS를 이용한 변전소 시뮬레이터 개발에 관한 연구)

  • Lee, D.S.;Ahn, B.S.;Lim, S.I.;Lee, S.J.;Chang, S.C.
    • Proceedings of the KIEE Conference
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    • 2003.07a
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    • pp.178-180
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    • 2003
  • This paper proposes a real-time simulator that can simulate dynamic changes of a substation for intelligent SCADA system. The simulator consists of RTDS, voltage and current amplifier, IED, and RTU. The simulator is verified by system implementation and event simulation of a substation.

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A Study on the Basic Conformance test of IEC 61850 based Client (변전자동화 클라이언트의 IEC 61850 기본 적합성 시험방안에 관한 연구)

  • Lee, N.H.;Jang, B.T.;Kim, B.H.;Shim, E.B.
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2009.05a
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    • pp.259-262
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    • 2009
  • IEC 61850 based substation automation system mainly consists of human machine interface and a various of IEDs in charge of protective and control functions of the substation. Both of them should require the performance verification of IEC 61850 communication services because their communication relation is the same as client and server throughout the digital network. This paper shows a research result on the testing method of basic communication interface of the IEC 61850 based client, which was implemented by the analysis of real communication between HMI and IED of IEC 61850 based substation automation system and refereed to IED IEC 61850 conformance test procedures.

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Development of a Digital System for Protection and Control of a Substation Part 1 - Development of hardware (변전소의 보호.제어를 위한 디지탈 시스템 개발 PART 1 - 하드웨어 개발)

  • Kwon, W.H.;Lee, Y.I.;Park, H.K.;Park, S.H.;Kim, M.J.;Moon, Y.S.;Yoon, M.C.;Kim, I.D.;Lee, J.H.
    • Proceedings of the KIEE Conference
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    • 1992.07a
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    • pp.359-361
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    • 1992
  • This paper describes the development of an Integrated Digital Protection And Control System (IDPACS) for 345 KV substation. The developed IDPACS system containes digital protection units for transmission lines, delivery lines, transformers, bus, shunt reactors and Shunt capacitors. We deloped a Local Area Network (LAN) Which connects the digital protection units to the station computer for monitoring and control purposes.

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A Study on the Automation of MVDC System-Linked Digital Substation (MVDC 시스템연계 디지털변전소 자동화 연구)

  • Jang, Soon Ho;Koo, Ja Ik;Mun, Cho Rong
    • KIPS Transactions on Computer and Communication Systems
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    • v.10 no.7
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    • pp.199-204
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    • 2021
  • Digital substation refers to a substation that digitizes functions and communication methods of power facilities such as monitoring, measuring, control, protection, and operation based on IEC 61850, an international standard for the purpose of intelligent power grids. Based on the intelligent operating system, efficient monitoring and control of power facilities is possible, and automatic recovery function and remote control are possible in the event of an accident, enabling rapid power failure recovery. With the development of digital technology and the expansion of the introduction of eco-friendly renewable energy and electric vehicles, the spread of direct current distribution systems is expected to expand. MVDC is a system that utilizes direct current lines with voltage levels and transmission capacities between HVDCs applied to conventional transmission systems and LVDCs from consumers. Converting existing lines in substations, where most power equipment is alternating current centric, to direct current lines will reduce transmission losses and ensure greater current capacity. The process bus of a digital substation is a communication network consisting of communication equipment such as Ethernet switches that connect installed devices between bay level and process level. For MVDC linkage to existing digital substations, the process level was divided into two buses: AC and DC, and a system that can be comprehensively managed in conjunction with diagnostic IEDs as well as surveillance and control was proposed.

Digital Time-Domain Simulation of Ferroresonance of Potential Transformer in the 154 kV GAS Insulated Substation

  • Shim, Eung-Bo;Woo, Jung-Wook;Han, Sang-Ok
    • KIEE International Transactions on Power Engineering
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    • v.11A no.4
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    • pp.9-14
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    • 2001
  • This paper reports a set of digital time-domain simulation studies conducted on 154 kV wound Potential Transformer(PT) int he 154 kV Gas Insulated Substation(GIS). The Electro-Magnetic Transient Program(EMTP) is used to develop the PT model and conduct the transient studies. The accuracy of the PT model is verified through comparison of the EMTP simulation results with those obtained from the field test results. The investigations shows that the developed model can accurately predict PT transient resonance, especially, the phenomenon of ferroresonance. The model is developed not only to determine impact of transients on PT response but also to design ferroresonance suppressor devices of PT. And it can also be used to predict PT transient response on power system monitoring and protection scheme.

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