• Title/Summary/Keyword: Emergency power

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Unified Controller for 100kVA Emergency Generator (100kV급 비상발전기용 통합제어기)

  • Jeong, C.Y.;Cho, J.G.;Baek, J.W.;Lee, J.J.;Kim, Y.J.;Yoo, D.W.
    • Proceedings of the KIEE Conference
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    • 1999.07f
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    • pp.2801-2803
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    • 1999
  • An unified controller for emergency generator is presented to control AVR and Governor and l00kVA power conditioner. This controller is operated to compensate current harmonics and asymmetries caused by nonlinear load and unbalance loads. The power conditioner shapes the source current sinusoidal in phase with source voltage and allows the generator to maximum power even to the single phase load. Also this power conditioner allows that three phase generator synchronizes with single phase main source and load sharing. An l00kVA generator system was built and the unified controller is realized with DSP(TMS320C32PCMA). Experimental results for many load conditions are presented to verify the performance of the unified controller.

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A Application Method of Engine-Generator Power System in Ambulance (긴급 구난차량의 발전시스템에 관한 연구)

  • Jung, Won-Seok;Lee, Bong-Seok;Sim, Han-Sub
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.11 no.3
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    • pp.187-192
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    • 2012
  • Recently, the electric device has been launching owing to the development of industry. That development also can maximize the efficiency of generator. The emergency rescue vehicle operation differs from ordinary vehicles in engine life and usage distances. For the application of this system, this research proposes the ways to operate the emergency rescue vehicle operations more efficiently. Currently, many power systems, especially motors, developed with a large output of power. It is possible to produce electricity in the engine room with enough space and to operate all equipment within the rating load capacity.

A Study on Site Survey of Emergency Generator for Resources (비상용 발전기 자원화 확대를 위한 현장실태조사에 관한 연구)

  • Cho, Sung-Koo;Han, Woon-Ki;Jung, Jin-Soo;Song, Young-Sang;Lim, Hyun-Sung
    • Proceedings of the KIEE Conference
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    • 2015.07a
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    • pp.1565-1566
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    • 2015
  • As a result of increasing power demand and concern about power supply shortage in the world, various energy sources without depletion of fossil fuel are installed to electrical network. Above all, nuclear energy can be considered as the most economical energy source to generate electricity. But recently, due to problem of safety which has emerged as a key social issue, additional construction of nuclear power plants is difficult. In order to replace nuclear power, researches on the emergency generator have been actively conducting. This study conducted a survey of public institutions about specification of backup generator system and current states to secure available capacity.

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On Hunting Protected Circuit at the Inflow about Load direction Harmonics of a Small Size the Generator (소형 발전기의 부하측 고조파 유입시 HUNTING 방지회로)

  • Bae, Jong-Il;Park, Byeong-Yeol
    • Proceedings of the KIEE Conference
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    • 2002.07d
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    • pp.2668-2670
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    • 2002
  • The generators of a small size below 100Kw are often used as power suppliers for emergency only in most domestic telecommunication companies. Serious twisted waves occur due to the inflow of harmonies from the generator into a S-type rectifier. And the increasing by stages of load upon the rectifier end up a stoppage of power supply during the serious hunting, which makes it difficult to supply power securely on the other part as well as that of communications. In case of long time of power failure the generators of a small size will be essential because the battery for emergency has a limit in capacity. Therefore it is necessary to solve the problems concerning the generators. This study is focused on the identifying and solving the problem including use of SCR elements connected to the generators.

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Investigation of Excitation System for Nuclear Emergency Diesel Generator (원전 비상디젤발전기 여자시스템 고찰)

  • Shin, Man-Su;Lee, Joo-Hyun;Lim, Ick-Hun;Jeong, Tae-Won
    • Proceedings of the KIEE Conference
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    • 2007.07a
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    • pp.1894-1895
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    • 2007
  • It is excitation system for nuclear emergency generator that is to startup automatically and sequentially supply essential loads with power. There are static type and alternating exciter, etc in its excitation system. An object of study is static excitation system which power is taken from power potential transformer and power current transformer. It is to complement curtailment of excitation system ability at happening short accidents. And Startup mode are quick startup and slow startup, etc. Its characteristic is looked into in this paper.

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Nursing Competency And Indicator Development By Emergency Nurse's Clinical Ladder (응급실 간호사의 임상 등급(clinical ladder)에 따른 간호역량 및 행동지표 개발)

  • Youk, Shin-Young
    • Journal of Korean Academy of Nursing Administration
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    • v.9 no.3
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    • pp.481-494
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    • 2003
  • Purpose: This study was to develop nursing competencies, sub-competencies and behavior indicators according to the clinical ladder of emergency nurses. Method: index of content validation was used by 21 clinical experts. Results: This study had three phases to develop nursing competencies, sub-competencies and behavior indicators. In first phase: 12 nursing competencies and 33 sub-competencies were developed through the literature review on nursing competency and emergency nurses' job description. The content of 12 competencies and 33 sub-competencies were reviewed by 3 nursing professors. The 12 competencies and 33 sub-competencies were followed: clinical judgement and measures(6 sub-competencies), processing ability of ward works(2 sub-competencies), flexibility(2 sub-competencies), resources management(2 sub-competencies), confidence(3 sub-competencies), cooperation(2 sub-competencies), professional development power(2 sub-competencies), patient service orientation(3 sub-competencies), inclination toward ethical value(5 sub-competencies), influence power(2 sub-competencies), developing others(2 sub-competencies), self control(2 sub-competencies). In second phase, 132 behavior indicators were developed according to nurse clinical ladder: novice, advanced novice, competent, proficient. In Third phase, content validity was examined on 132 behavior indicators by 21 clinical experts. 126 among 132 indicators had over 70% agreement among experts and 6 indicators under 70% were revised. Conclusion: nursing competencies, sub competencies and behavior indicators can be used nurses' clinical performance as well as establishing proper directions for professional growth related to reward system.

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An exploratory factor analysis on the burden of responding to violence: data obtained from 119 emergency medical technicians (119 구급대원의 폭력대응 시 부담감에 대한 탐색적 요인분석)

  • Ga-Yeon, Lee;Eun-Sook, Choi
    • The Korean Journal of Emergency Medical Services
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    • v.26 no.3
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    • pp.7-19
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    • 2022
  • Purpose: The purpose of this study was to confirm the exploratory factor analysis and reliability analysis of the burden of 119 emergency medical technicians. Methods: The data collection period was from November 2, 2022 to November 6, 2022. This study had 316 subjects, and the collected data were analyzed using exploratory factor analysis and Cronbach's α coefficient using IBM SPSS statistics 27.0. Results: The reliability was .924. The exploratory factor analysis yielded the following information: the first factor was lack of violence policy, the second factor was conflict between the organization and the paramedics, the third factor was lack of psychological support, and the fourth factor was lack of education and communication. The explanation power of 4 factors was 54.31%. Conclusion: This study is significant as it performs exploratory factor analysis as a preliminary step in the development of a burden measurement tool.