• Title/Summary/Keyword: electrical facilities

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Comparison and Analysis of Domestic and Foreign Standard for safety environment installation of power station (수.변전설비의 안전 환경 설치에 관한 국내외 규정 비교 분석)

  • Bai, Seok-Myeong;Kim, H.S.;Bang, S.B.;Kim, K.H.;Lee, K.H.;Kim, J.M.
    • Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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    • 2004.11a
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    • pp.267-273
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    • 2004
  • It's a general tendency that electrical facilities of power station become a large size and increase in number because electrical facilities become big and complicated with internal industrial development and economic growth. So, electrical accidents were increased in this electrical facilities of power station. Therefore, we studied on the safety environment in power station and compared of internal and external standards. So this paper gives information which is applied to install the electrical facilities and prevents measures against electrical accidents.

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An Improved Investment Priority Decision Mettled for the Electrical Facilities Considering the Reliability of Distribution Networks (배전계통 신뢰도를 고려한 전기설비투자 우선순위 결정 기법)

  • Park Chang-Ho;Chae Woo-Kyu;Jang Sung-Il;Kim Kwang-Ho;Kim Jae-Chul;Park Jong-Keun;Choi Jung-Hwan
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.54 no.4
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    • pp.177-184
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    • 2005
  • This paper proposes a improved investment priority decision method of the facilities considering the reliability of distribution networks. The proposed method decides a investment order of the facilities combining, by fuzzy rules, the investment priority decision of KEPCO and the priority decision considering reliability evaluation indices. Where reliability evaluation indices are SAIFI(System Average Interruption Frequency Index) and SAIDI(System Average Interruption Duration Index), as referred to evaluation index for sustained interruption. The reliability analysis method of distribution networks applied in this paper utilizes analytic method, where the used reliability data is historical data of KEPCO. Particularly, we assumed that the failure rate increased as the equipment ages. To verify the performance of the proposed method, we applied it with the planned projects to reinforce the weak facility electrical facilities in KEPCO in 2004. The evaluation result showed that, under a limited budget, the reliability of the KEPCO in the Busan region using the proposed method can be enhanced than using the conventional KEPCO's method. Therefore, the results verify the proposed method can be efficiently used in the actual priorities method for investing the electrical facilities.

A study of Protection for electrical corrosion by stray current in DC railway system (직류전기철도시스템에서의 누설전류에 의한 전식방지에 대한 연구)

  • Lee Jae-young
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.748-753
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    • 2005
  • The stray current(leakage current) in DC railway system like as Metro Subway and LRT system happens electrical corrosion on theses superstructure facilities and also underground facilities that causes the public property losses. we must study and establish on the theoretical concept and concrete phenomena for electrical corrosion, In the construction period we intend to review and find out a lot of solution to minimize theses losses. we must investigate, measure and analysis natural atmosphere of these facilities locations to present a maintenance management guide for the upcoming operation stage.

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Standardization of a Remote Motoring and Controlling System for Nursery Electrical Facilities (양식장 전력설비의'원격 감시 및 제어 시스템 표준화)

  • 권장우;김정인;송재용;손원진;길경석
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2000.05a
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    • pp.398-401
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    • 2000
  • This paper describes the standardization of remote monitoring and controlling system for nursery electrical facilities. The proposed system have three operating modes of motoring, controlling, and fault-notifying. In fault-notifying mode, the local unit is designed to send messages on failure of the electrical facilities to the central computer, mobile phone, and pager. Also, the local unit is consisted of 24-input and 8-output port needed for monitoring and controlling the facilities. With the use of this standardized system, we could expect the effective management in every phase of nursery facilities.

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A study of grounding system design with economical efficiency in electric rolling stocks facilities (철도차량기지내에서의 경제성을 고려한 접지설계에 관한 연구)

  • Chang, Chin-Young;Kim, Jae-Moon;Kim, Yang-Soo
    • Proceedings of the KIEE Conference
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    • 2009.04a
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    • pp.6-9
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    • 2009
  • Recently, there have been studied the importance of the grounding system, as electrical equipments installed in the building, such as intelligent building. The object of grounding of electrical facilities is to protect human and machine damage from the power supply interruption high voltage by use of the accident current dissipating into the ground. In this paper, we is proposed to design of grounding system with economical efficiency in electric rolling stocks facilities. To make efficient ground, ground potential rise must be controlled in the way of overall lowering and evenness instead of independent grounding method with respect to electrical facilities.

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Characteristic of Magnetic Fields Distribution in 345/154KV outdoor Substation (345/154KV 전력소 구내의 자계 분포 특성)

  • Sa, J.W.;Kim, S.M.;Hong, J.P.;Jeon, H.T.;Hahn, S.C.;Joo, S.W.
    • Proceedings of the KIEE Conference
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    • 1997.07a
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    • pp.97-99
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    • 1997
  • For two decades and more, a lot of research work on the biological effects of EMF (Electromagnetic Field) on human health have been reported. Electric facilities in a typical substation are the main source of magnetic field. This paper presents the measurement and analysis of magnetic field in 345/154KV outdoor substation. The magnetic field depends on the currents which distributed by electric facilities. The result of this paper will be able to be used as basic informations to reduce the level of EMF from the electric utility facilities.

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A Study on the Actual Condition of Domestic 170kV GIS- Electrical Facilities of Private Use (국내 자가용 170kV GIS 사용 실태조사)

  • Cheon, Jong-Cheol;Lee, Eun-Suk;Kim, Jong-Seo
    • Proceedings of the KIEE Conference
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    • 2003.07c
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    • pp.1741-1743
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    • 2003
  • In this paper, We presents the actual condition of domestic 170kv GIS(Gas Insulated Swichgear)- Electrical Facilities of Private Use be examined by post. We are able to confirm the distribution characteristic analysis of GIS failure- type of industry, occurrence frequency, part and counter plan research for failure preventing.

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An Enhanced Investment Priority Decision of Facilities Considering Reliability of Distribution Networks

  • Choi Jung-Hwan;Park Chang-Ho;Kim Kwang-Ho;Jang Sung-Il
    • KIEE International Transactions on Power Engineering
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    • v.5A no.3
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    • pp.260-268
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    • 2005
  • This paper proposes an improved investment pnonty decision method of facilities considering the reliability of distribution networks. The proposed method decides an investment order of the facilities combining, by fuzzy rules, the investment priority decision by KEPCO and that by reliability evaluation indices. The reliability evaluation indices are SAIFI (System Average Interruption Frequency Index) and SAIDI (System Average Interruption Duration Index). The reliability analysis method of distribution networks applied in this paper utilizes the analytic method, where the used reliability data is the historical data of KEPCO. Particularly, we assumed that the failure rate increases as the equipment ages. To verify the performance of the proposed method, we applied it with the planned projects to reinforce the weak electrical facilities in KEPCO in 2004. The evaluation result showed that, under a limited budget, the reliability of KEPCO in the Busan region using the proposed method could be enhanced if used rather than the conventional method typically in place. Therefore, the results verify that the proposed method can be efficiently used in the actual priorities method for investing in the electrical facilities.

Fixed neutron absorbers for improved nuclear safety and better economics in nuclear fuel storage, transport and disposal

  • M. Lovecky;J. Zavorka;J. Jirickova;Z. Ondracek;R. Skoda
    • Nuclear Engineering and Technology
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    • v.55 no.6
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    • pp.2288-2297
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    • 2023
  • Current designs of both large reactor units and small modular reactors utilize a nuclear fuel with increasing enrichment. This increasing demand for better nuclear fuel utilization is a challenge for nuclear fuel handling facilities. The operation with higher enriched fuels leads to reduced reserves to legislative and safety criticality limits of spent fuel transport, storage and final disposal facilities. Design changes in these facilities are restricted due to a boron content in steel and aluminum alloys that are limited by rolling, extrusion, welding and other manufacturing processes. One possible solution for spent fuel pools and casks is the burnup credit method that allows decreasing very high safety margins associated with the fresh fuel assumption in spent fuel facilities. This solution can be supplemented or replaced by an alternative solution based on placing the neutron absorber material directly into the fuel assembly, where its efficiency is higher than between fuel assemblies. A neutron absorber permanently fixed in guide tubes decreases system reactivity more efficiently than absorber sheets between the fuel assemblies. The paper summarizes possibilities of fixed neutron absorbers for various nuclear fuel and fuel handling facilities. Moreover, an absorber material was optimized to propose alternative options to boron. Multiple effective absorbers that do not require steel or aluminum alloy compatibility are discussed because fixed absorbers are placed inside zirconium or steel cladding.

A Study on Economic Analysis of Development of On-line Diagnosis Technique for Preventing Electrical Accidents (전기설비사고예방을 위한 온라인진단기술 개발의 경제성 분석)

  • Kim, Han-Sang;Kim, Kwang-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.63 no.2
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    • pp.313-318
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    • 2014
  • In the last couple of decades industrialization and technological development has not only increase in the scale of electrical facilities and it has become more and more complicated and diversified. Furthermore, fires in the electrical transformers, like those that have knocked out power in the country in the past years, are likely to become more common as utility systems begin to show their age. The importance of preventing electrical accidents can never be overemphasized and for this reason, supply of on-line diagnosis system combining information and communication technology(ICT) for the customer's electrical facilities has been increasing recently. The major advantage of on-line diagnosis system is that the device's potential problems could be detected early before a serious deterioration or breakdown occurs. In this paper, We estimated the benefit from the investment in the right of present value of sales, success rate of commercialization regarding R&D investment for development and commercialization of on-line diagnosis technology targeting customer electrical facilities. As a result, the net value added of 29.7 billion won and the increased profit by roughly 7.52 precent are expected.