• Proceedings of the KIEE Conference
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• 1999.07b
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• pp.749-751
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• 1999

We acquired operating data in an existing steam turbine power plant using analog control system to investigate operation characteristics. We analyzed a load control logic to develop a digital turbine control system. The load control logic is constituted of load target, load reference, loading rate, load limit and admission mode transfer of valve. The result of this paper is utilized to implement a digital turbine control system.

• Proceedings of the KIEE Conference
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• 1999.07b
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• pp.746-748
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• 1999

We acquired operating data to develop a digital control system adaptable to gas turbine power plant with about 50 to 100MW. We analyzed an existing analog control logic using these data. We developed control application programs for turbine automatic start up. We showed a similar result compared with an existing analog control system by computer simulation.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.371-373
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• 2001

Main functions of Generator Circuit Breaker(GCB) is cut the generator off from the main transformers and the aux. transformers when plant trip or startup. In this paper, the design requirements For GCB of nuclear power plant is examined. NRC presented the area of review, acceptance criteria and review procedures of GCB in the SRP(Standard Review Plan). In Korea, APR1400 adapted the GCB in main power system.

• Proceedings of the KIEE Conference
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• 1998.07b
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• pp.792-794
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• 1998

As the modern industrial processes become more complex, it is getting more difficult to model and control the processes. The PID controller has been widely used in power plant process control since its structure is simple and familiar to the field engineer. This paper describes the application of the PID controller developed DCS system in power plant.

• Proceedings of the KIEE Conference
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• 2006.07b
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• pp.956-957
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• 2006

KEPRI developed digital excitation system for San-Cheong pumped storage power plant. This is the very complicated system because of operation connected with SFC(Static Frequency Converter). Many operation modes(stating, regeneration, back to back, line charging, gird connection mode etc) during the commissioning were successfully tested at san-Cheong #2.

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.2587-2589
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• 2000

We analyzed an existing analog and digital turbine control logic. We developed load control application program for steam turbine power plant. In this paper, we showed a similar result compared with an existing analog turbine control system by computer simulation.

• Proceedings of the KIEE Conference
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• 2000.07d
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• pp.2593-2595
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• 2000

We analyzed an existing turbine speed control logic in steam turbine power plant. If it is too late to respond a valve position demand signal, it is difficult to control turbine speed. In this paper we proposed a modified control logic and showed a good result by computer simulation.

• Proceedings of the KIEE Conference
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• 1997.07f
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• pp.2184-2186
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• 1997

Potential-source controlled rectifier excitation system has been developed by KEPRI for synchronous generator in YOUNG-DONG thermal power plant. This paper describes the characteristics of redundant control system and transfer function of dual channel excitation control system. This system has been using a analog and digital circuit devices(hybrid type)

• Proceedings of the KIEE Conference
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• 2003.07d
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• pp.2307-2309
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• 2003

국내 원자력 터빈 발전소의 아날로그 전기식 터빈제어시스템을 국내 기술에 의해 디지털 삼중화 제어시스템으로 개조하여 현재 성공적으로 운전되고 있다. 적용된 시스템의 구성 및 기능에 대해서 설명하고, 시운전 견과에 대해서 간략히 언급하고자 한다.

• Proceedings of the KIEE Conference
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• 2007.10a
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• pp.301-302
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• 2007

Maximum power consumption was up to 6,228kW in the summer of 2007 due to steady development of industry as well as increased demand of individual. Twenty fossil-Fired Thermal Power Plant for 500MW were underconstructed at present. KEPRI(Korea Electric Power Research Institute) manage 'Development of Advanced Fossil-Fired Thermal Power Generation System' project to construct high efficient power plant of 1000MW capacity for preparing increased demand of power. Design of control logic and data sampling were explained and high efficient control logic was simulated in detail in 'The Development of Next Generation Power Plant Instrument and Control System'(sub-project of 'Development of Advanced Fossil-Fired Thermal Power Generation System' project).