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Study on Influence of Accurate Air Distribution on AGC in 600MW Thermal Power Plant Boiler

Author: HuangYouZuo
Tutor: ZhangLi；ZhaoHuaBang
School: Chongqing University
Course: Power Engineering
Keywords: 600MW Boiler Accurate with the wind AGC
CLC: TK32
Type: Master's thesis
Year: 2008
Downloads: 101
Quote: 0
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Abstract


The traditional boiler combustion control strategies and manufacturers baffle control principles are not well positioned to meet the AGC of thermal power unit load regulation requirements. Through in-depth research and analysis of the boiler combustion, according to the AGC of thermal power unit load regulation requirements, the shortcomings and deficiencies of the strategy for traditional boiler combustion control, this topic the proposed boiler precise with wind combustion control strategy. The subject for two different types of the Pannan Power Plant 600MW unit boiler and its combustion system proposed combustion control strategies based on accurate with the wind, mathematical models and solutions, and for the first time in four 600MW units Pannan Power Plant on the success of the application and implementation. After a test of the AGC project research and practical application shows on the boiler in the the Pannan power plant 4, precise air distribution boiler combustion control strategies and programs is reasonably effective and successful, the excellent the AGC test during the technical indicators, boiler smooth parameter control, boiler combustion stability, efficient, responsive load quickly, fully meets the requirements of the grid AGC unit. Thesis research was a clear modern large-scale power station boiler in the AGC mode control ideas: ① control process should be reasonable and in line with the actual situation of the mathematical model, based on the mass balance and energy balance accurate with the wind the way to control strategy formulated with the wind, in line with the control of the combustion process, this control method for AGC control of power station boiler recommended. ② accurate with wind, combustion control strategy to be based on the actual situation of the specific boiler combustion, it is required to develop load boiler combustion characteristics automatically control the overall solution. ③ have a complete, reliable, secondary air damper measurement point. Modern large-scale power plant boiler structure is relatively compact, and often do not have a secondary air flow arrangement of the burner corresponding angle of secondary air or layer, even if the layout often great because measuring point straight tube segment is very short, uneven flow field, resulting in measurement error can not even use. Air volume measuring device required for these cases for further study, and take the appropriate solution, it is best to carry out the necessary renovation and technology upgrade. The results also show that with accurate wind boiler combustion control strategy is also suitable for other types of automatic control of boiler combustion, has broad application prospects and value.

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CLC: > Industrial Technology > Energy and Power Engineering > Thermal measurement and thermal automatic control > Thermal Automatic Control
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