• Title/Summary/Keyword: ANSI/IEEE Std. 80

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An Improved Model for Grounding System Using process of Grounding Design (접지설비 절차에 따른 개선된 접지실비 모델)

  • Song, Young-Joo
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.22 no.6
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    • pp.50-60
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    • 2008
  • The ANSI/IEEE Std. 80-2000 method has been commonly used to design grounding system for the South Korea domestic market. However, the appropriateness of this method to the ground design environment has not yet been examined. This paper presents a new design grounding system method that complements the ANSI/IEEE Std. 80-2000 method, when the new method is a lied to thickness, dangerous voltage, and grid spaced computations for grounding conductors. Furthermore, this paper examines reliability and economic efficiency issues by comparing of the ANSI/IEEE Std. 80-2000 Annex B's case study with the original method.

Mesh Grounding Grid Design of Dangerous Voltage Review (위험전압 검토에 의한 메시접지설계)

  • Son, Seok-Geum;Kim, Jae-Chul
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.60 no.3
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    • pp.120-125
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    • 2011
  • When we design the grounding grid, dangerous voltage ANSI/IEEE Std. 80 method has been commonly used in the domestic area. However, the suitability of the ground rules for the design environment available. However, the suitability of the ground rules for the design environment available. In this paper, sticks according to the electrode conductor in combination with the mesh in order to design the ground by the IEEE Std.80 was designed. So in this paper, we examined of IEEE Std. 80 touch voltage method marginal utility and we induced for those problems by comparison between IEEE Std. 80 touch voltage value and simulation experimentation value. Furthermore, this paper presents a new design grounding system method that complements the IEEE Std. 80 method.

A Safety Assessment of a Mesh Grounding System for 22.9kV Substations (22.9kV 수전설비 Mesh 접지설계의 안전성 평가 사례)

  • Park, Sang-Gyo;Choi, Chang-Kyu
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.27 no.5
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    • pp.54-60
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    • 2013
  • There is increasing demand for practical groundings for small-area substations because of the recent revision of Korea's Electrotechnical Regulations, which necessitates the method of evaluating their safety. This paper proposes a practical mesh grounding system for 22.9kV substations and studies how to evaluate its safety. The proposed grounding system is proved to obey the safety criteria of ANSI/IEEE Std. 80 via ANSI/IEEE Std. 80 method and computer simulation.

A Study on the Behavior of Floating-Point Unit Conforming the ANSI/IEEE Std. 754-1985 (ANSI/IEEE Std. 754-1985에 의거한 부동소수점 연산기의 동작원리에 관한 연구)

  • Kim, Kwang-Uk;Chung, Tae-Sang
    • Proceedings of the KIEE Conference
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    • 1999.11c
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    • pp.788-790
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    • 1999
  • A software implementation of floating-point addition and multiplication is presented. For this, the ANSI/IEEE standard for binary floating-point arithmetic is reviewed briefly. The architecture and behavior of the $Intel^{(R)}\;80{\times}87$ FPU is fully studied and basic algorithms for floating-point addition and multiplication are used for the implementation. Some examples and their verifications are also presented.

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Economic Design of Grounding System Using an Improved Model (접지설비 절차 개선을 통한 경제적 접지설계)

  • Choi, Hong-Kyoo;Kim, Yang-Soo;Song, Young-Joo;Choi, Sin-Gwon;Shin, Hye-Young
    • Proceedings of the KIEE Conference
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    • 2008.04b
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    • pp.13-15
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    • 2008
  • 국내 접지시스템 설계시 가장 널리 사용되는 것은 ANSI/IEEE Std. 80-2000이나 국내 접지설계 환경의 적정성 여부는 검토되고 있지 않다. 따라서, 본 논문에서는 국내 접지설계 환경을 고려한 새로운 접지도체의 굵기 산정방법과 접지도체의 위험전압 산정방법, 접지도체의 Grid간격 산정방법을 적용하여 ANSI/IEEE Std.80-2000을 보완한 새로운 접지시스템 설계 방법을 제시하였다.

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Economized Grounding System Design Based Upon Case Study (사례연구를 통한 경제적 접지설계 검토)

  • Kim, Yang-Soo;Shim, Yong-Sik;Choi, Dai-Won;Kim, Tae-Hoon;Lee, Jung-Eun
    • Proceedings of the KIEE Conference
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    • 2008.04b
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    • pp.31-33
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    • 2008
  • 본 논문에서는 국내 접지설계 환경의 적정성 여부를 검토하여 ANSI/IEEE Std.80-2000을 보완한 새로운 접지시스템 설계방법을 이용하여 접지설계를 검토하였으며, ANSI/IEEE Std. 80-2000 Annex B의 사례연구를 통해 기존방식과 비교 검토하여 신뢰성과 경제성을 검증하였다.

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Measurement and Analysis of the Dangerous Voltage Around Grounding Electrode for Safety in Substation Ground (변전소 접지설계를 위한 접지전극 주변의 위험전압 측정과 분석)

  • Son, Seok-Geum;Kim, Jae-Chul
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.60 no.4
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    • pp.214-219
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    • 2011
  • The substation grounding design,"IEEE Guide for Safety in AC Substation Grounding (ANSI / IEEE Std 80)"has been widely used. Substation grounding design and substation grounding resistance of grounding network site to predict the voltage at the risk of a very important task, which is a ground fault current due to the influx of the ground network and due to rise in the Earth's potential can be applied to human dangerous Voltage within safe tolerances be configured to be the ground because the network. IEEE Std. 80 for the substation construction safety equipment on the ground securing the ground electrode and the mesh around the boundary potential distribution in terms of risk analysis by the touch voltage and the reference was to clean up the definition and the basic steps of the voltage of the voltage limits the risk of peripheral grounding electrode Suppression by the simulator through a new secure from dangerous voltage design techniques were presented.