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- 저자 : 손태하(Tae Ha Son) (검색결과 5 건)
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손태하(Tae-Ha Son),이병헌(Byung-Heon Lee),허준영(Jun-Young Huh),한영균(Young-Gyun Han),이태경(Tae-Kyung Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Fan pitch blade control hydraulic actuator of 500MW grade large scale boiler is frequently operated under normal operation condition. The trouble or malfunction of pitch blade control hydraulic actuator lead to the decline of boiler thermal efficiency and unexpected trip of power plant trip. Through the control device response characteristic analysis for pitch blade control hydraulic actuator able to maintain the governing system with the best condition to operate stably and reliably power plant. The industry has been made remarkable growth and faced a modern industrialized time during the early 1970's in Korea. In this paper, described about the proceedings from the taking of countermeasure after analysis and maintenance to being able to conduct safety operation for power plant.
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발전설비 통풍기 날개각 제어작동기 신뢰성평가 모델 개발
손태하(Tae-Ha Son),허준영(Jun-Young Huh) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
This paper describes the proceedings of creating countermeasures after analysis and maintenance to be able to conduct operation safely in a power plant. In order to operate the power plant in a stable and reliable way, the best condition of the governor system can be maintained through the response characteristic analysis of the control device for the pitch blade control hydraulic actuator. The fan pitch blade control hydraulic actuator of a 500㎿ large-scale boiler is frequently operated under normal operation conditions. Common problems or malfunctions of the pitch blade control hydraulic actuators leads to the decline of boiler thermal efficiency and unexpected power plant trip. The inlet and outlet gas can be controlled by using the fan pitch blade control hydraulic actuator in order to regulate the internal pressure of the furnace and control the frequency in the power plant facility which utilizes soft coals as a power source.
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대용량 발전소 터빈제어 유압펌프 건전성 진단 시험장치 개발에 관한 연구
이병헌(Byung-Heon Lee),손태하(Tae-Ha Son),박종호(Jong-Ho Park) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Governor Department certainly is in the heart in controlling a prime mover. With it, we control the speed and the output of the prime mover, such as a steam turbine, a water turbine, a gas turbine, a Diesel engine, driving synchronous alternat current generators supplying electric power to the grid. A governor is the very device to maintain the System frequency, which is the one of three conditions required in evaluating the quality of the electricity generated, in a range of required minimum variation. And a governor is a machine with really extreme precision of which operational dead band reaches within 0.02 percent. It is inevitable to do maintain the governing system with best condition to operate stably and reliably the power plant as well economically achieving our goal - to supply good quality of electricity with reasonable price to our customers. But it is true the preciseness and the importance of its role in the plant control and to the system grid have made the maintenances of a governing system not easy and simple. Until early in 1985 the maintenance job had performed with the technical services of the manufactures resulting fairly high expense in time and money. Nevertheless, as the installed capacity and the load demand increased, the ability in the field of governing system as well has drastically strengthened due to the efforts of the engineers in the Corporation.
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보일러 배관용 P92 파이프강의 기계적 특성 및 미세조직에 관한 연구
김범수(Beom Soo Kim),손태하(Tae Ha Son),민택기(Taek Ki Min) 대한설비공학회 2012 설비공학 논문집 Vol.24 No.11
The hardness and strength test was performed to make the manufacturing process of SA213 P92 boiler pipe steel. And the microstructure change was studied to find out the cause of room temperature property of P92 steel, ie, low hardness and strength property. The room temperature property of P92 steel depends on the improper normalizing and cooling rate. Especially, Ferrite was formed and the steel had low hardness when the temperature was decreased slowly under the cooling rate 1℃/min after normalizing at the temperature around Ac1 to Ac3. The critical heat treatment temperature and cooling rate was over 900℃ and over 10℃/min to satisfy the minimum yield and tensile stress which was laid down by ASME Code.
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손태하,이낙영 충남대학교 기초과학연구소 2003 忠南科學硏究誌 Vol.30 No.1
The purpose of product liability law is defined as liable duty for compensation those who damaged or hurted by the defective product, and the law is adopted more than 30 countries in the world. In our country, product liability law was established after examining thoroughly at 1999 and was in forced since 2002. A 'product' is defined as 'all the movable property which is produced or processed' in the Product Liability Law article. 2 clause. 1 and 'electric power' is also applicable to 'product' by means of above article. In this paper, Kepco(Korea Electric Power Corporation)'s reactive strategies in electric power to the enforcement of the Product Liability Law are examined and analyzed.
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