• 제목/요약/키워드: Maintenance effectiveness

검색결과 608건 처리시간 0.027초

발전기 예방정비계획 전산모형 개발 (Development of Generator Maintenance Scheduling Program)

  • 박종배;정윤원;주행로;이명희;신점구
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
    • /
    • pp.216-217
    • /
    • 2006
  • This paper presents development of program for generator maintenance scheduling. The maintenance scheduling of generating units is a dynamic discrete combinatorial optimization problem with constraints to determine the optimal maintenance periods of each generating units for a given planning periods. The developed program is designed so as to provide the maintenance schedule satisfying the operating reserve margin levelization and the procurement of proper reliability. In order to verify the effectiveness of the developed program, the numerical study has been performed with the practical data in 2005.

  • PDF

정비 규정 도입 타당성 연구 (A Feasibility Study on Adopting the Maintenance Rule)

  • 황미정;김길유
    • 한국신뢰성학회:학술대회논문집
    • /
    • 한국신뢰성학회 2000년도 추계학술대회
    • /
    • pp.279-285
    • /
    • 2000
  • 국내 원자력발전소에서도 신뢰도 정보를 이용한 운영 및 규제가 활발해 지기 시작함에 따라 정비규정에 대한 필요성이 커지기 시작하였다. 본 연구의 목적은 효율적인 정비 및 규제 방안을 제안하기 위한 목적으로 성능위주 규제의 하나인 정비규정의 효용성과 적용방법을 이해하고 국내 도입에 대한 타당성을 제고하는데 있다. 또한, 주기적 안전성 평가 밑 신뢰도 중심정비에 대한 소개도 다루었다.

  • PDF

Control system modeling of stock management for civil infrastructure

  • Abe, Masato
    • Smart Structures and Systems
    • /
    • 제15권3호
    • /
    • pp.609-625
    • /
    • 2015
  • Management of infrastructure stock is essential in sustainability of society, and its analysis and optimization are studied in the light of control system modeling in this paper. At the first part of the paper, cost of stock management is analyzed based on macroscopic statistics on infrastructure stock and economical growth. Stock management burden relative to economy is observed to become larger at low economic growth periods in developed economies. Then, control system modeling of stock management is introduced and by augmenting maintenance actions as control input, dynamic behavior of stock is simulated and compared with existing time history statistics. Assuming steady state conditions, applicability of the model to cross sectional data is also demonstrated. The proposed model is enhanced so that both preventive and corrective maintenance can be included as system inputs, i.e., feedforward and feedback control inputs. Optimal management strategy to achieve specified deteriorated stock level with minimal cost, expressed in terms of preventive and corrective maintenance actions, is derived based on estimated parameter values for corrosion of steel bridges. Relative cost effectiveness of preventive maintenance is shown when target deteriorated stock level is lower.

퍼지 정수계회법을 이용한 발전기 보수유지계획 수립 수법의개발 (Development of a Method for the Generator Maintenance Scheduling using Fuzzy Integer Programming)

  • 최재석;도대호
    • 한국지능시스템학회논문지
    • /
    • 제7권5호
    • /
    • pp.77-85
    • /
    • 1997
  • 본 연구에서는 발전기 보수유지계획 수립을 위하여 퍼지 다목적함수를 이용한 새로은 방법을 제시한다. 보수유지 지연비용의 최소화의 발전기 공급예비력의 최대화를 퍼지 다목적함수로 삼았다. 퍼지론적인 환경을 갖는 보수유지계획의 최적점을 구하기 위하여 퍼지 다목적 정수계획법을 이용하였다. 본 연구의 중요 특성은 기존의 불확실성을 갖는 크리스프적인 제약조건을 퍼지제약으로 처리함으로써 보다 유연한 해를 구할 수 있다는 점이다. 모델계통에 대한 사례연구를 통하여 이번에 개발한 수법의 효용성을 보였다.

  • PDF

발전기 예방정비계획 전산화모형 개발에 관한 연구 (A Study on the Development of Generator Maintenance Scheduling Program Package)

  • 원종률;윤용범;박시우;남재현
    • 대한전기학회논문지:전력기술부문A
    • /
    • 제48권11호
    • /
    • pp.1374-1381
    • /
    • 1999
  • This paper describes development of a package for generator maintenance scheduling program with user-friendly interactive mode. Generator maintenance scheduling is to select desirable maintenance periods of generators in the given interval satisfying reliability or economic criteria. Window-based system for user-friendly mode and Oracle-based database system for efficient data management are established in our package. Reserve rate levelization and LOLP minimization are performed in calculation mode, which is composed of DLL programs. Many graphs and charts are illustrated for the user-analysis. Operation is carried out by day-based unit, not by week. The case study has been conducted with the data of practical KEPCO power system in 1999 and successfully demonstrated its effectiveness.

  • PDF

퍼지 집합이론과 유전알고리즘을 이용한 일간 발전기 보수유지계획의 수립 (A Daily Scheduling of Generator Maintenance using Fuzzy Set Theory combined with Genetic Algorithm)

  • 오태곤;최재석;백웅기
    • 전기학회논문지
    • /
    • 제60권7호
    • /
    • pp.1314-1323
    • /
    • 2011
  • The maintenance of generating units is implicitly related with power system reliability and has a tremendous bearing on the operation of the power system. A technique using a fuzzy search method which is based on fuzzy multi-criteria function has been proposed for GMS (generator maintenance scheduling) in order to consider multi-objective function. In this study, a new technique using combined fuzzy set theory and genetic algorithm(GA) is proposed for generator maintenance scheduling. The genetic algorithm(GA) is expected to make up for that fuzzy search method might search the local solution. The effectiveness of the proposed approach is demonstrated by the simulation results on a practical size test systems.

철도차량 정비공장의 설비배치 개선에 관한 연구 (A study on the Improvement of Facility Layout in Locomotive Maintenance Workshop)

  • 이상설;안도만;강희정
    • 산업경영시스템학회지
    • /
    • 제22권49호
    • /
    • pp.89-98
    • /
    • 1999
  • The objective of this study is to develop an improved algorithm for layout problems. Computerized facility layout program was also applied to solve the layout problem in locomotive maintenance workshop. The current facility layout is structured in the large space without considerations of many variable factors. For this reason, effectiveness of layout results in loss on effective space utility. This study is to develop an algorithm in the consideration of importance weight and desirable shape of specific department in the computerized layout planning and quantitative relationship rating between each department was used. Standard process duration of locomotive maintenance workshop was used to select the main activities of locomotive maintenance work. This study could generate more efficient facility layout design to reduce the number of movement frequency and travel distance in maintenance workshop.

  • PDF

Maintenance Model of Agricultural Facilities Using CBR

  • Kim, Jae-Yeob;Lee, Yong-Kyu;Kim, Gwang-Hee
    • 한국건축시공학회지
    • /
    • 제12권2호
    • /
    • pp.133-141
    • /
    • 2012
  • As we move from the industrial age to the information age, domestic industries are changing rapidly, and rural society is also laying the foundation to make use of information technologies. Through this kind of modernization, the size of agricultural facilities has been increasing on a significant scale. But, in reality, there are many difficulties in the maintenance of agricultural facilities in proportion to their growing number. Accordingly, this research aims to solve the fundamental problems that occur with agricultural facilities in the maintenance stage. In addition, it aims to provide information on how to maintain and manage facilities for farmers. The presentation of the maintenance information was conducted using a case-based reasoning method that solves current problems based on past cases. The tool of case-based reasoning was applied to define the establishment of the base for cases, characteristic variables and maintenance measures. The effectiveness of a CBR model was examined through the case study. The use of the case-based reasoning method is judged to be effective as a tool to support the decisions of farmers regarding maintenance. When the maintenance measures derived through the CBR model are offered to farmers, the fundamental problems of maintaining agricultural facilities will be solved, and the damage to such facilities minimized.

중소기업의 인적자원관리활동과 연구개발 역량이 조직유효성에 미치는 영향 (Effects of Human Resource Management Activities and R&D Capabilities of SMEs on Organizational Effectiveness)

  • 노성여;서종석;옥영석
    • 산업경영시스템학회지
    • /
    • 제39권3호
    • /
    • pp.100-108
    • /
    • 2016
  • The purpose of this study is to present a business strategy plan to increase organizational effectiveness of small and medium-sized enterprises. The research investigated in the level of human resource activity, such as recruitment, education, evaluation, compensation and development for the employees and executives who are working at small and medium-sized enterprises where located in Busan and Gyongnam province. With this, the research carried out actual proof analysis on the level of human resource activity effects on organization effectiveness like job satisfaction and organizational commitment. The following implications can be acquired from the result of multiple regression analysis on the 201 employees of small and medium enterprises. First, small and medium-sized enterprises should carry out human resource management activities and improve research and development capacity to enhance organization effectiveness. Second, in order to improve job satisfaction of the members of small and medium-sized enterprises, the management should concentrate on recruitment activity and reward maintenance management activity and come up with strategies to enhance learning ability and external network ability. Third, in order to enhance organizational commitment of the members of small and medium-sized enterprises, recruitment activity, training activity, and reward maintenance management activity should be carried out and the management should come up with strategies to enhance learning ability and external network ability. In this research, the objective was only to find out antecedents of organization effectiveness, but considering that causality might arise among the antecedents, in the studies hereafter, the verification on the structural relationship of various factors will be needed.

소방장비의 효과적 운용방안에 관한 연구 (The Study on Effective Maintenance and Management of the Fire Fighting Equipment)

  • 채진;우성천
    • 한국화재소방학회논문지
    • /
    • 제23권3호
    • /
    • pp.48-60
    • /
    • 2009
  • 최근 소방행정 분야에 인력 및 각종 소방장비의 확충보강 등은 이루어 졌으나 소방장비분야에서는 주로양적 팽창만 이루어진 결과 유지 관리상에 여러 가지 문제점이 나타나고 있다. 소방장비는 특성상 실용성 경제성 내구성이 높고 꼭 필요한 곳에 사용될 수 있는 효과성을 갖고 있어야 하나 현실적인 유지관리 상태는 그렇지 못한 실정이다. 따라서 본 연구는 소방장비 유지 관리에 대한 실태분석에서 도출된 문제점을 비교 분석하여 의사소통의 활성화, 최고 관리자의 관심과 지지, 전문성 확보, 현장에 적합한 장비 보급 등 소방장비의 효과적인 운용방안을 제시함.