• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.554-556
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• 2005

Distribution Automation System (DAS) will provide supervision and remote control of switches and reclosers such as pole pounted switches and pad-mounted switchgears on high voltage distribution line. Kepco had developed basic function such as remote monitoring, remote control, remote measuring and remote setting at first. As a next step, Kepco has been developed diverse application programs such as single line diagram drawing program, relay coordination program, feeder reconfiguration program, over load elimination program, bad data detection program, section load management program, fault processing program and so on. Kepco is examining to develop more powerful functions for special specification of foreign distribution automation system. This paper explains what is the target for overseas DAS market.

• 한국인터넷방송통신학회논문지
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• 제18권2호
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• pp.163-168
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• 2018

본 논문에서는 윈도우 환경에서 블랙박스 테스트 기법을 사용하여 GUI 기반 테스트를 자동화하는 테스트 자동화 프로그램 도구를 제안 및 개발한다. 제안된 테스트 자동화 프로그램 도구의 주요한 특징은 다음과 같다. 첫째, 에러 상태를 이미지로써 지정하고, 테스트 스텝마다 화면을 캡처하여 이미지 유사도 비교를 통해 에러 메시지 검출 여부를 확인한다. 둘째, 실행 중 이벤트 대기시간이나 각 테스트 스텝 간 좌표 증가 값 등 여러 옵션 설정을 지원한다. 이러한 블랙박스 테스트 자동화 연구는 안드로이드나 웹 등의 환경에서는 많았지만 윈도우 환경에서는 그렇지 않았다. 제안된 시스템의 성능평가 결과 제안된 시스템은 이미지 비교 모듈로써 GUI 테스트 자동화를 수행하고, 프로세스 상태 확인과 에러 이미지 검출 여부를 확인함으로써 테스트를 정상적으로 수행함을 확인하였다.

• 한국건설관리학회논문집
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• 제23권4호
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• pp.57-64
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• 2022

식물공장은 통제된 공간에서 인공적인 환경을 조성과 자동화 설비를 통해 식물을 계획적으로 생산하는 시설이다. 하지만 식물공장은 내부 환경 제어 기술에 비해 재배 과정의 자동화 도입이 미비한 상황이다. 이는 다수의 근로자 투입으로 인한 운영비용 상승의 문제를 초래한다. 따라서 본 연구는 식물공장의 재배 과정에 자동화 도입 전후를 비교하여 경제성을 평가하고자 하였다. 첫째, 자동화 도입이 필요한 작업을 선정하기 위해 식물공장의 작업 과정을 파악하였다. 파악된 작업 과정은 재배 식물의 생육 과정을 중심으로 나열하고 자동화를 도입할 작업을 선정하였다. 둘째, 선정된 작업에 방안별 투입과 산출을 비교할 경제성 평가 방법을 설정하였다. 셋째, 방안별 소요비용의 계산에 필요한 변수를 설정하였다. 넷째, 방안별 소요비용의 산정을 위한 계산 식을 도출하였다. 마지막으로 작업별 손익분기점을 분석하고 전체 작업에 대한 손익분기점을 통해 운영 기간에 따른 자동화 도입의 적절성을 확인하였다. 분석 결과, 식물 재배를 위한 6가지 작업에 자동화를 도입할 경우 손익분기점은 3.4년으로 분석되었다. 이는 대상 식물공장을 3.4년 이상 운영할 경우 자동화 도입은 경제성 측면에서 우수하다고 판단할 수 있다. 본 연구는 식물공장에 자동화 도입에 따른 손익분기점을 분석함으로써 국내외 다양한 식물공장의 자동화 도입에 따른 경제성 분석을 위한 기초 자료로 활용 가능할 것으로 판단된다. 향후 수행될 연구는 자동화 도입에 적절한 식물공장의 기준을 선정하고 효율적인 자동화 도입 방안을 수립하는 연구가 필요할 것으로 판단된다.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2009년도 추계학술대회 논문집
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• pp.267-271
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• 2009

This paper presents the improvement and application effect in fault restoration program based on distribution automation system(DAS) of KEPCO. When a fault occurs, fault restoration program can detect fault section based on FI information of DAS, and calculate the best restoration solution by comparing the load capacity of outage area and the spare load capacity of connected distribution lines, and propose switch operating procedure for fault section isolation and outage restoration. Fault restoration program was applied to real field and it was verified that this program is applicable to diverse field cases. By using this fault restoration program to the field human error can be reduced and fault procedure can be more reliable, accurate, and fast.

• International Journal of Precision Engineering and Manufacturing
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• 제1권1호
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• pp.118-126
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• 2000

Die-casting burr to casting process is removed by post-process for assembly and quality control of product. Though robot has been widely used for deburring job before. CNC exclusive machine is currently developed for high power, high speed machining and quick tool change. Deburring tool path with complex 3D curve type is defined to make out deburring NC program. But there is no efficient method to define it currently used methods with teaching probe on machine. In this study the efficient method to make out deburring NC program is developed. 5-axis digitizing machine is used to receive data of deburring path. And the post process for NC program generation is developed in consideration of the machining conditions. The developed system is not dependent on the skill of operator and has the advantage to maintain the flexibility of job to modify NC program due to the wear of tool and aging of the die casting.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1996년도 추계학술대회 논문
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• pp.144-149
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• 1996

The automation of mesh generation in BEM is bery important in numerical analysys field for the time and efficiency. To be solve this problem Probram and Algorithm, to achive purpose of making input data and automation of mesh generation based on Expert system is developed in this study. And function of this program can be rotating and zooming, To prove efficiency and availability of program in result the stress intensity factor which is criteria of fracture mechanics is caculated and compared with other results.

• 한국해양공학회지
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• 제17권1호
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• pp.72-79
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• 2003

This paper deals with the development of an interface program for automatic plate forming, which can exchange information between the heating line information generation program and the automatic heating apparatus. In this paper, the performance of the developed interface program has been verified from the view point of numerical position control. By applying the interface program to the operation of the automatic heating apparatus, an experiment of line heating has been conducted for several steel plate models. Based on the experimental results, a simplified relation to estimate angular distortion has keen derived as a natural characteristic of the present automatic heating apparatus. As a result of the present study, the prototype of the automatic plate forming system has been constructed, and its application to the real surface models found in the ship will be presented in the near future.

• 한국CDE학회논문집
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• 제9권3호
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• pp.220-225
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• 2004

This paper presents a program for the automatic alignment of optical axes and evaluation of the optical filter performance which is a key technologies for the production of optical module. Recently the production of optical filter module mostly depends upon handwork or semi-automation. Moreover, they have used an expensive spectrum analyzer. In this work, we have developed an automatic alignment and evaluation program of optical filter module using photo detector and developed program for automation and cost reduction of the production of optical titter module.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2002년도 춘계학술대회 논문집
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• pp.3-8
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• 2002

An intelligent polishing robot automation system is developed. Automatic Tool Change System(A.T.C.), Tool Posture Angle Control, and Robot Program for Polishing Application are developed and integrated into a robotic system that consists of a robot, pneumatic finding tool, and finding abrasives (papers and special films). A.T.C. is specifically designed to exchange whole grinding tool set for complete unmanned operation. Tool Posture Angle Control is developed to give a certain skew angle rather than right angle to tools on the surface for best finishing results. A.T.C. and Tool Posture Angle Control is controlled by a PC and the robot controller. Also, there have been some considerations on enhancing the performance of the system. Some elastic material is inserted between the grinding pad and the holder for better grinding contact. The robot path data is generated automatically from the NC data of previous machining process.

• Journal of Electrical Engineering and Technology
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• 제10권5호
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• pp.2077-2082
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• 2015

Based on Deutsch assumption, a calculation method on the electric field over the ground surface under HVDC transmission lines in the wind is proposed. Analyzing the wind effects on the electric field and the space charge density the existing method based on Deutsch assumption is improved through adding the wind speed to the ion flow field equations. The programming details are illustrated. The calculation results at zero wind speed are compared with available data to validate the code program. Then the ionized fields which resulted from corona of ±800kV HVDC lines are analyzed. Both the electric field and the current density on the ground level are computed under different wind direction and speed. The computation results are in good agreement with measurements. The presented method and code program can be used to rapidly predict and evaluate the wind effects in HVDC transmission engineering.