• 대한전기학회:학술대회논문집
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• 대한전기학회 2000년도 하계학술대회 논문집 A
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• pp.276-278
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• 2000

In KwangYang steel works power system operation, the ON-LINE application of power system diagnosis technology is indispensable to not only power quality, but also stable operation and economical generation. In cases of stability constraint violation. stable power system operation is obstructed. Steel works power system is consist of 154kV transmission lines, and 345, 154, 22, and 6.6[KV] distributed lines, 5 numbers of substation, 17 units of generators. For this power system operation. loadflow program is developed. Database is tied with Windows GUI application, is designed, and is interfaced with this program. This program put up with loadflow solution of assembled MMI power system, and planed to diagnose of overloads or to imitate entrance, and isolation of equipment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2004년도 하계학술대회 논문집 D
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• pp.2677-2679
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• 2004

The core control equipment is made by multi redundancy at present, as advanced digital techniques appear. Especially MMI(man to machine interface) is developing the availability and diagnostics of the control system. This project is aim to retrofit nuclear power plants operated more than 15 years or to apply newly built nuclear power plants.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1992년도 하계학술대회 논문집 A
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• pp.165-168
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• 1992

The ADS system is applied and used in KEPCO. But it is short of graphic functions and on-line display of power system. In this study, we develpoed ADS MMI system which expands graphic functions of ADS, and enhanced efficiency of ADS system. And we showed system extension in the future and suggested a foundation of total distribution automation system.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2002년도 추계학술대회 논문집
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• pp.47-51
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• 2002

전 규모에서 소규모에 이르는 MMIS(Man Machine Interface System) 모사설비는 실제의 원자력발전소에 사용될 MMIS를 응용 소프트웨어로 구동되는 모사환경을 통하여 사전에 시험 및 검증할 목적으로 사용된다. 기존의 MMIS 모사설비 개발은 잘 정의된 개발 프로세스에 기반을 두지 않고 프로젝트 관리자 또는 개발 담당자의 경험과 직관에 의존하여 수행되었다. 이로 인하여 MMIS 모사설비의 개발 일정이 지연되거나 개발의 결과가 초기목표를 만족하지 못하는 불만족 사항이 나타났다. 본 연구는 MMIS 모사설비의 응용 소프트웨어 개발을 위한 프로세스를 정의하고 이에 따라 설비개발을 진행하였다. 개발 프로세서는 계획 단계, 설계 및 구현단계, 시험단계의 세 부분으로 구성하였다. 본 논문에서는 MMIS 모사설비에 요구되는 일반적인 성능특성요건과 개발공정요건을 살펴보고, 본 연구가 정립한 응용 소프트웨어 개발의 프로세스 및 각 프로세서에서의 공정활동을 제시한다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 하계종합학술대회 논문집(5)
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• pp.173-176
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• 2002

DAS(Data Acquisition System) as a ground support equipment has played a critical role in proving the status of ready-to-fire of a rocket system before launch. But it is hard to implement and place a real-time measuring system in a control room at a long distance from the vehicle. In this paper DAS is introduced by being located at the LEC(Launch Equipment Container)[1], 50 meters away from the rocket and connected to remote monitoring system via fiber optics with TCP/IP protocol by means of client/server algorithm. Therefore real-time data acquisition and storage are guaranteed and a convenient and useful MMI (Man-Machine Interface) can be developed.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2002년도 전력전자학술대회 논문집
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• pp.693-696
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• 2002

In this paper, network management system(NMS) was developed using Ethernet network for several devices. Recently, due to the development of the information communication, network has been constructed several place. And management system using network has been studied due to the increment of necessity of remote control for industrial device. Agent board that necessity of NMS, was developed using general micro-controller, it operates like stand-alone network device, supports TCP/IP protocol suite, has the ability to connect to industrial device and communicates each other. Also manager base on MMI was developed, it operates with agent board and supports effective management. To prove this system UPS(uninterruptible power supply) is selected as the example of industrial device. Finally, experimental result verifies the communication between agent board and manager.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 추계학술대회 논문집 학회본부 A
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• pp.331-333
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• 1999

Power supply for Nuclear Power Plant was developed, and MMI monitoring circuit was added to the main function of power supply. The developed power supply is designed to show equal or higher performance compared with the existing power supplies. Performance of the power supply is verified by simulations, experiments, and authentication test for Q-class, he status of power supply and fault waveform can be displayed and analyzed on PC by RS-232C port. By adopting the latest parts, mainly domestic models, production cost and delivery can be reduced. Replacement period of capacitor can be extended by life estimation.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2000년도 제15차 학술회의논문집
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• pp.132-132
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• 2000

The reliability of EIC systems in hot rolling mill is indispensable and very important in order to maintain stable production. Signals obtained from sensors and control system should be analyzed to monitor the condition of down coiler in hot rolling mill. We develope a monitoring system of down coiler which is composed of three parts (1) data acquisition and MMI (2) signal processing and analyzing, and (3) automatic data saving. Also it is designed to enable to inform users the abnormal conditions of down coiler. This developed system is expected to make it possible to reduce long downtime, secure high facility precision, and maintain high control levels.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 B
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• pp.465-467
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• 1997

The CD Trend Recorder, developed as a substitution of the existing SCR (Stript Chart Recorder), acquires various outputs (e.g. frequency voltage, current, power, temperature, pressure, etc) simultaneously using PC up to 32 different outputs, display, and analyze them just like the existing SCR. It stores the data in CD-ROM so th various data can be stored permanently this system has built-in MMI program and to monitor and analyze the data in real-t expert system link the data to the do where needs the data to display, analyze, in the new medium at the same time.

• 조명전기설비학회논문지
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• 제14권4호
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• pp.48-56
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• 2000

본 연구에서는 BAS에셔 사용이 확실시되는 Lonworks 네트워크의 새로운 개념과 설계방법을 제시하고 이를 이용하여 원격검침 및 조명 감시제어 실험시스템을 구축하고 실험을 통하어 개방적이고, 상호운용성을 가지는 제어 네트워크로서, 원격검침 및 감시시스템으로서도 매우 신뢰성 있고, 우수한 시스템임을 확인하였다.