• Title, Summary, Keyword: IED

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Performance Analysis of the GOOSE Transmission of an IED Considering Network Redundancy (네트워크 이중화를 고려한 IED GOOSE 전송에 관한 성능 분석)

  • Lee, Nam-Ho;Jang, Byung-Tae
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.23 no.10
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    • pp.75-80
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    • 2009
  • In order to prevent loss of communication packets and drop of transmission speed owing to the network fault occurrence, it should be considered network redundancy. That is why a messages of IED GOOSE is the critical signal in charge of protection and control of the substation. So most of users implement the substation automation system with Hybrid network topology ant IED supporting double ethernet ports. Because IEC 61850 GOOSE conformance test is limited in the functional test, this paper suggests how to test the performance of IED GOOSE transmission considering Network redundancy, and describes the analysis of an example test on real IEDs and how to impact the IED GOOSE performance to the substation automation system.

Fault Tolerant of IED in IEC61850 based Substation Automation System (IEC 61850기반 변전소 자동화 시스템에서 IED의 결함 극복 방법)

  • Lee, Dong-Wook;Jin, Yong-Woo;Lee, Duck-Su;Lim, Seong-Il;Lee, Seung-Jae
    • Proceedings of the KIEE Conference
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    • pp.152-154
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    • 2005
  • This paper proposes new methods which are used for trouble detecting and tolerance of IED in IEC61850 based Substation Automation System. There are three point devices for construction of this system: Trouble Detection IED, Backup IED and Engineering Unit. Trouble Detection IED tests trouble of Bay IED and sends the result to Engineering Unit. And then Engineering Unit is able to control the system. When fault occurs in Bay IED, Backup IED will be substitute the troubled Bay IED. If this proposed scheme can be used in this system, the reliability of the Power System would be greatly improved.

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Study on IEC 61850 Performance Testing Procedures of BF Protection IED (차단키 실패 보호 IED의 IEC 61850 시스템 성능 시험 절차서에 관한 연구)

  • Lee, Nam-Ho;Jang, Byung-Tae
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.8
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    • pp.59-66
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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 system verification. Breaker Failure protection IED can operate protection activity by communicating with other IEDs such as T/L IED, owing to IEC 61850 international standard and digital substation automation system. Accordingly, IED testing process should be changed from the conventional way by electrical contact test on individual IED to system based testing method by network communication. This paper describes how to test BF IED based on substation automation system and testing procedures using UML, which is used to implement S/W design.

A Study of IED Configuration Tool using XML (XML을 이용한 IED Configuration Tool에 관한 연구)

  • Oh, Sung-Min;Hong, Jung-Gi
    • Proceedings of the KIEE Conference
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    • pp.507-508
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    • 2007
  • IEC 61850은 변전소자동화시스템에 대한 국제 표준 규격이다. IEC 61850 파트 6은 통신관련 IED(Intelligent Electronic Device) 구성과 IED 파라미터, 통신 시스템 구성, 개폐소 구조 및 이들 간의 관계를 설명하는 파일 형식을 규정한다. 이 파일 형식의 주요 목적은 IED 능력 설명, 호환되는 방법으로 여러 제조사들의 IED 엔지니어링 도구와 시스템 엔지니어링 도구 간의 SA 시스템 설명을 교환하는 것이다. 본 논문에서는 XML을 이용한 IED Configurator TOOl 구현을 제시하였다.

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A Study on the Protection and Measuring Algorithm of IED in Load Condition (부하상태를 고려한 IED 보호 및 계측 알고리즘에 관한 연구)

  • Lee, Sung-Hwan
    • Journal of Advanced Marine Engineering and Technology
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    • v.36 no.4
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    • pp.527-532
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    • 2012
  • Recently, in power system, even though the needs of protective IED(Intelligent Electronic Device) is highly increased, there are some problems in the field when use the IED. When the IED is in the fluctuated overload condition, because of the existing algorithm calculate the trip time only with the measured current of just previous measuring stage, the calculated trip time is not a proper value for the overload protection at this kind of condition, and when the load current fluctuate between overload and normal condition, because of the instantaneous reset characteristic of existing algorithm the IED dose not trip. And the non linear loads using power electronic elements seem to be increased. These non linear loads require a counterplan about various harmonics incoming to electric power systems. So we will give solutions about these problems.

Development of IEC 61850 based Integration Engineering Tool for Intelligent Electronic Device (IEC 61850 기반의 IED 통합 엔지니어링 툴 개발)

  • Han, Jeong-Yeol;Ahn, Yong-Ho;Jang, Byung-Tae;Song, In-Jun;Kim, Yong-Hak
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.24 no.8
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    • pp.101-108
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    • 2010
  • In order to construct the IEC 61850 based substation automation system, the IED integration engineering tool is necessary to cope with the substation automation by full digital devices in the real power system. Compared the configuration tools provided IED vendors which are able to support the operation and communication analysis among IEDs, the XML based IED integration engineering tool can build, edit and save the ICD, SCL and CID files. Particularly, the IED integration engineering tool is possible to apply the IEC 61850 based IEDs to engineering the systems and also provides the reliability and efficiency of the system to the utilities and manufacturers.

Development of PC Software for IED using software architectures (소프트웨어 아키텍처를 이용한 IED용 PC 소프트웨어 개발)

  • Kwon, Hyo-Chul
    • Proceedings of the KIEE Conference
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    • pp.739-740
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    • 2011
  • 최근 변전소용 IED는 IEC61850의 적용을 기점으로 하여 기술적으로 더 많은 발전을 거듭하고 있다. IED에 더 다양한 기술을 포함하면서 안정적이고 확실한 동작을 요구하는 것은 기본이고, 사용자 위주의 Interface와 편리한 관리 도구도 요구되어 진다. 이에 따라 IED를 PC로 제어하고 관리하기 위한 소프트웨어 또한 기술적으로 발전해야 하는 상황이다. 소프트웨어는 기본적으로 실시간 관리와 프로젝트 관리 그리고 다수의 IED지원 등의 기능을 가져야 하며 이를 구현하기 위하여 여러 가지 방식의 아키텍처 패턴이 적용될 수 있다. 본 논문에서는 IED를 관리하는 소프트웨어에 적용될 수 있는 아키텍처를 제시함으로써 소프트웨어 구현에 대한 방향을 모색해 보았다.

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Realization of Protection IED for Distributed Power System (분산 전원 계통 연계용 보호 IED의 설계 및 구현)

  • Han, Chul-Wan;Oh, Sung-Nam;Kim, Kab-Il;Son, Young-Ik
    • Proceedings of the KIEE Conference
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    • pp.517-519
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    • 2005
  • In this paper, we consider a digital protection IED(Intelligent Electric Device) for a distributed power system. The IED can measure various elements for protection and communicate with another devices through network. The protection IED is composed of specific function modules: signal process module which converts analog signal from PT and CT handle algorithm to digital one; communication module for connection with another IEDs; input/output module for user-interfaces. A general purpose DSP board with TMS320C2812 is used in the IED. In order to verify the proposed IED, experimental researches with the power system simulator DOBLE has been carried out for a phase earth fault. The results show an under-voltage relaying algorithm has been realized sucessfully in the hardware system.

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A Study on Digital Protection Algorithm of IED for Hydroelectric Generating Unit (수력발전소 IED의 디지털 보호 알고리즘에 관한 연구)

  • Park, Chul-Won
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.63 no.3
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    • pp.149-156
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    • 2014
  • Generator of hydroelectric generating unit is to be protected by the digital protection IED. Now, any IED of large capacity for hydro power plant was not developed by domestic technology. This is because it is required for the generator of the high reliability technology and considered as due to the sale of the market of IED device is small. However, the protection IED must be develop by domestic technology to meet the advanced needs of the construction and replacement of electrical equipment in accordance with the new power plant development. In this paper, a digital algorithms for protection IED of large size of hydroelectric generating unit were designed. The algorithms consist of the stator protection, anti-motoring, overexcitation and loss of excitation. The performance of the algorithms were evaluated by using the simulation data collected from the PSCAD/EMTDC software. From test results, it can be seen that the developed algorithms were not maloperation.

Method to Prevent the Malfunction Caused by the Transformer Magnetizing Inrush Current using IEC 61850-based IEDs and Dynamic Performance Test using RTDS Test-bed

  • Kang, Hae-Gweon;Song, Un-Sig;Kim, Jin-Ho;Kim, Se-Chang;Park, Jong-Soo;Park, Jong-Eun
    • Journal of Electrical Engineering and Technology
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    • v.9 no.3
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    • pp.1104-1111
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    • 2014
  • The digital substations are being built based on the IEC 61850 network. The cooperation and protection of power system are becoming more intelligent and reliable in the environment of digital substation. This paper proposes a novel method to prevent the malfunction caused by the Transformer Magnetizing Inrush Current(TMIC) using the IEC 61850 based data sharing between the IEDs. To protect a main transformer, the current differential protection(87T) and over-current protection(50/51) are used generally. The 87T IED applies to the second harmonic blocking method to prevent the malfunction caused by the TMIC. However, the 50/51 IED may malfunction caused by the TMIC. To solve that problem, the proposed method uses a GOOSE inter-lock signal between two IEDs. The 87T IED transmits a blocking GOOSE signal to the 50/51 IED, when the TMIC is detected. The proposed method can make a cooperation of digital substation protection system more intelligent. To verify the performance of proposed method, this paper performs the real time test using the RTDS (Real Time Digital Simulator) test-bed. Using the RTDS, the power system transients are simulated, and the TMIC is generated. The performance of proposed method is verified in real-time using that actual current signals. The reaction of simulated power system responding to the operation of IEDs can be also confirmed.