Journal of Advanced Marine Engineering and Technology
- Volume 16 Issue 5
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- Pages.6-16
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- 1992
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- 2234-7925(pISSN)
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- 2234-8352(eISSN)
Study on the Improvement of Output Fluctuation from Generator Driven by Large Size-Low Speed Diesel Engine
대형저속 디젤엔진 구동 발전기의 출력변동 개선에 관한 연구
Abstract
Since world-wide oil shock on 1970s, many large size-low speed diesel engines, instead of steam turbines, are used for the industrial electric power generating plants due to their economic advantage of low specific fuel consumption. But it is very important to control their electric power fluctuation problems for the purpose of smooth parallel operation with existing power plants. In this paper the fluctuation problem of KEPCO Nam-cheju No.1 generator driven by diesel ngine(B & W 7K 60MC, 13931x138.5RPM) is investigated with analysis of torsional vibration of which 4th harmonic component is related to its power fluctuation. The problem can be improved by modification of cylinder arrangement and flywheel position in reverse sequence, equalizing the combustion gas pressure of all cylinder and installation of torsional vibration damper enlarged 30%(Je=7287Kg.m
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