• Title/Summary/Keyword: 전기통신공사

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The Conformance Testing System of File and Time Synchronization Communication of IEC 61850 based Client (시각동기를 포함하는 IEC 61850 클라이언트 file 통신 적합성 시험 시스템)

  • Lee, N.E.;Jang, B.T.;Lee, M.S.;Youn, S.M.
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.260-261
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    • 2011
  • 현재 한국전력공사 전력연구원은 IEC 61850 패킷 분석이 가능하고 IEC 61850 통신규격 제정기관인 UCA(Utility Communication Architecture)에서 발행된 클라이언트 적합성 시험절차서(Rev 1.1)에 대한 시험모델링이 가능한 클라이언트 전용의 시험시스템 개발을 완료하였다[1-5]. 본 논문은 IEC 61850 클라이언트 적합성 시험 중 변전자동화의 파일 전송시험과 타임서버관한 시험모델링과 사례를 다루고자 한다.

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Development of Project Delivery System in Public Sector for Modular Building (모듈러 건축물의 특성을 반영한 공공발주 방식의 개발)

  • Nam, Sunghoon;Kim, Kyungrai
    • Korean Journal of Construction Engineering and Management
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    • v.17 no.4
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    • pp.49-56
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    • 2016
  • Recent research has been ongoing for modular buildings in the country and interest increases. However, the activation of modular building projects is obstructed in the construction industry. There are many reasons to identity for this obstruction but one issue should be focussed. Modular buildings require to change the existing construction production system to a new construction production system, which is factory production - transportation - erection. However, the existing project delivery system in the public sector could not be adapted for this new construction production system due to the obligation of multi prime contract use, such as electrical, communication, fire fighting contracts by Law. Therefore, modular buildings in the existing project delivery system are separately contracted by multi prime contracts and modular units composed of the buildings are contracted by an architectural prime contractor as a commodity. As results, construction costs are increased, potential quality problems are raised and the existing project delivery system is finally an obstacle not to maximize benefits of the modular buildings. In this paper, we propose a new project delivery system for the modular buildings to adapt then ew construction production system.

A Study of Evaluation Certification on Electronic Power u-IT Convergence Equipment (전력 u-IT 융복합화 기기의 평가와 인증 연구)

  • Yi, Jeong-Hoon;Park, Dea-Woo;Bae, Suk-Myong;Kim, Eung-Sik;Kim, Hong
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2009.10a
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    • pp.499-502
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    • 2009
  • Supply of electric power and electricity safety for whole system and network are essential element. Electricity safety technology need rating for product and research about certification as product development that is done cotton flannel mixed with development of u-IT technology consists. Study on serve to develop electricity safety integration supervision system to apply product to u-City electric power appliance and cotton flannel mixed of u-IT appliance, Connection badness sensing instrument made device built-in electric power IT cotton flannel mixed in outlet that is used most in electric power appliance terminal. Using sensor on ZigBee, RFID performance estimation of communication and module for remote safety check of electricity safety integration supervision system. A performance experiment and estimation in PD, Arc detection diagnosis system and certification KS, electricity safety about product that get fitness finding.

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A Case Study on Fault Tolerant Control System for Power Plant Boiler Controller (발전소 보일러 제어기에 적용한 Fault tolerant control System의 연구)

  • Kim, Jee Hong;Cho, Hyun Yong;Chung, Myung Jin;Bien, Zeungnam
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.24 no.1
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    • pp.28-34
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    • 1987
  • As a means of improving the reliability of a process control system, a FTCS(Fault Tolerant Control System) is designed and applied to the boiler controller of a thermal power plant. The proposed FTCS has capabilities of fault detection and diagnosis as well as back-up control and bumpless switching. A prototype of FTCS is implemented on an IBM PC as an add-on system and it is experimentally verified by using a boiler process simulator together with simplified analog controllers and a switching unit that an one-fold fault is detected in real time and back-up controller takes over the role of the original controller, controlling the faulty loop.

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Case study and implications for AI-powered predictive maintenance in the railroad industry (철도산업에서 AI기반 예측 유지보수를 위한 사례 연구 및 시사점)

  • Eun-Kyung Park
    • The Journal of the Korea institute of electronic communication sciences
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    • v.19 no.4
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    • pp.693-700
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    • 2024
  • This study aims to analyze the concept and application of AI-based predictive maintenance in the railroad industry and draw implications from it. Focusing on the adoption of AI-based maintenance systems by the Korea Railroad Corporation and Seoul Metro, we examined how AI technology can improve the efficiency and safety of railroad operations. We also compared and analyzed the application of AI technology in the European railroad industry through the cases of Deutsche Bahn in Germany and SNCF in France. The study found that AI-powered predictive maintenance contributes to reducing the frequency of breakdowns, reducing maintenance costs, and increasing the reliability of railroad operations.

Measurement of Harmonic Level in Low-Voltage System (저압 배전계통의 고조파 현황 분석)

  • Kang, Moon-Ho;Song, Yang-Hyao;Lee, Hyung-Ho
    • Proceedings of the KIEE Conference
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    • 2008.07a
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    • pp.386-387
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    • 2008
  • 정보통신기술과 디지털기술의 발전으로 수용가의 설비의 전기적인 내성은 낮아지고 있는 반면 배전계통의 외란은 증가하고 있다. 특히 고조파는 변압기 등 기기의 수명저하와 원판형계전기 오동작 등의 원인이 되고 있어 배전계통의 고조파 현황분석은 매우 중요한 의미를 갖는다. 한국전력공사에서는 연구과제의 수행을 통해 2006년부터 1년간 저압 배전계통의 고조파 현황을 측정하고 이를 분석하였다. 측정개소는 기준임피던스의 기준이 되는 저압측 전력량계 1차측으로 하고 전국 100 개소를 부하특성에 따라 선정하였다. 1년간 측정한 고조파를 차수별로 분석한 결과 영상분에 해당하는 9차와 15차 고조파가 IEC61000-3-6의 저압계통 고조파 기준과 비교하여 높게 나타났다.

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A study on the Monitoring System for Apartment Power Apparatus (공동주택에서 전력설비 감시에 관한 연구)

  • Hong, Gyu Jang;Lee, Gi Hong;Kim, Jeong Tae;Yu, Geon Su
    • The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.9 no.2
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    • pp.156-156
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    • 1995
  • 지금까지 공동주택에서 전력감시반은 지하실에 설치된 그래픽보드를 이용하여 감시를 수행하고 있으나, 공동주택에서의 인력구조와 시스템특성상 적절한 감시방법이라고 할 수 없다. 따라서 본 논문에서는 컴퓨터를 이용한 인텔리전트 감시시스템을 제안하였다. 제안된 감시반은 직렬통신방식을 이용한 집중감시시스템으로 설비를 디자인된 화면으로 실시간 감시하고 사용이력과 고장진단을 위한 지식베이스를 구현하여 감시반 효율성의 향상과 감시반의 공사비 절감을 유도하였으며, 실시간 O.S는 Trend 940을 이용하였다.

A Study on Decision Plan of Hosting Capacity for Distribution Feeder (배전선로 연계용량 선정방안에 관한 연구)

  • Kim, Seong-Man;Oh, Joon-Seok;Kim, Ok-Hee;Lim, Hyeon-Ok;Moon, Chae-Joo
    • The Journal of the Korea institute of electronic communication sciences
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    • v.16 no.4
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    • pp.653-660
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    • 2021
  • Renewable energy resources are rapidly becoming an integral part of electricity generation portfolios around the world due to declining costs, government subsidies, and corporate sustainability goal. Interacting wind, solar, and load forecast errors can create significant unpredictable impacts on the distribution system, feeder congestion, voltage standard and reactive power stability margins. These impacts will be increasing with the increasing penetration levels of variable renewable generation in the power systems. There is a limit to the maximum amount of renewable energy sources that can be connected in a distribution feeder by the connection rule of transmission & distribution facility in Korea. This study represents the decision plans of hosting capacity for distribution feeders without the need for significant upgrades to the existing transmission infrastructure. Especially, the paper suggests and discusses the hosting capacity standard of feeder cables and minimum load calculation of distribution feeders.

Electrical fire prediction model study using machine learning (기계학습을 통한 전기화재 예측모델 연구)

  • Ko, Kyeong-Seok;Hwang, Dong-Hyun;Park, Sang-June;Moon, Ga-Gyeong
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.11 no.6
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    • pp.703-710
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    • 2018
  • Although various efforts have been made every year to reduce electric fire accidents such as accident analysis and inspection for electric fire accidents, there is no effective countermeasure due to lack of effective decision support system and existing cumulative data utilization method. The purpose of this study is to develop an algorithm for predicting electric fire based on data such as electric safety inspection data, electric fire accident information, building information, and weather information. Through the pre-processing of collected data for each institution such as Korea Electrical Safety Corporation, Meteorological Administration, Ministry of Land, Infrastructure, and Transport, Fire Defense Headquarters, convergence, analysis, modeling, and verification process, we derive the factors influencing electric fire and develop prediction models. The results showed insulation resistance value, humidity, wind speed, building deterioration(aging), floor space ratio, building coverage ratio and building use. The accuracy of prediction model using random forest algorithm was 74.7%.

A Study on the Standards of Open Information About Telecommunications Facilities for Promoting FTTH Investment (FTTH망 투자 촉진을 위한 전기통신설비의 정보제공 기준에 관한 연구)

  • Cho, Eun-jin;Kweon, Soo-cheon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2009.10a
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    • pp.674-677
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    • 2009
  • The one of the big issues in fixed markets is the investment of next generation networks. The nation-wide incumbent has provided the copper cable based access networks in so far. However in the future multiple providers participant in investing network in first stage of the network investment like mobile networks. Each NRA makes efforts on the resolving construction cost of civil engineering costs through the opening conduits. To smooth operation, information opening service is needed then NRAs must determined the level of opened information and cost of usage information and so on. This paper proposed the alternation of the issues to boost the investment of the next generation networks.

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