Research On Optimum Operation Management System Of Nuclear Power Plant Based On The Theory Of Exergy Cost

China’s energy resources supply is relatively insufficient, while its consumption isextremely high and efficiency is rather low. Owing to the serious environmental pollutioncaused by energy production and utilization, the economic development andenvironmental protection issues are increasingly prominent. Nuclear power as one ofclear and safe energy has been considered as the great development potential energysource. With the development of the nuclear power technology, under the condition ofensuring the nuclear security, the optimum operation management system of nuclearpower plant can improve the thermal economic of units, save nuclear fuel and decreasethe nuclear waste material generation. Therefore, researching this object has importantpractical significance and theoretical value. Under this background, the research objectsis oriented to the pressurized water reactor (PWR) nuclear power unit, a general modelfor exergy cost analysis is established based on the exergy cost theory ofexergoeconomics. The optimum operation management system is developed based onadvanced computer technology, which can provide a theoretical basis for the optimaloperation and energy saving reconstruction of nuclear power units.In this thesis, the modeling of thermodynamics of PWR nuclear power units isestablished based on the method of exergy analysis. Then a general matrix equation ofexergy loss distribution for thermal system is deduced based on matrix algorithms. Onabove basis, an example of calculation and analysis is presented for a900MW PWRnuclear power units, and exergy loss distribution laws of thermal system and equipmentunder rated condition are obtained. Then unit performances are comprehensive evaluatedby using exergy loss coefficient and exergy efficiency ratio.Secondly, PWR nuclear power plant thermal system exergy cost analysis model hasbeen established by introducing exergy cost theory, which is beyond the thermodynamicmodeling. Taking a900MW pressurized water reactor nuclear power plant and anAP1000nuclear power plant as the research object, respectively, the unit exergy costs arecalculated in detail. Results show that the distribution of unit exergy cost in thermalsystem, and explicit optimization improvements are proposed for the specific equipment. Finally, taking the exergy cost analysis model as the programming fundamental andthe unit exergy cost as the economic evaluation indicator, an optimum operationmanagement system of nuclear power plant is developed by utilizing the Visual C#language and the SQL Server database technology, and its calculation results’ accuracy isverified by using MATLAB programming. The system running results demonstrates thatthe indicator calculations are accurate and reliable, which provide the data supporting andreference for the optimal operating of nuclear power units and performance assessmentof personnel.