The Study Of Energy-saving Diagnostic And Optimization Programs For Fushun Plant 300MW Unit

With the in-depth development of reform and opening up in China,energy has become an important factor restricting the sustainable development of our country.As an energy guzzler in thermal power plants,it has great potential in saving energy and protecting environment,which has a very important significance in researching on energy-saving on thermal power plant.In this paper,Fushun Power Plant 300MW unit is studied on its energy-saving diagnosis and optimization.The size,distribution,and places of energy-saving potential on current thermal power equipment and thermal system in plant are analyzed.At the same time,the equipment and system which have energy-saving potential are optimized,and the energy-saving optimization programs are proposed for six aspects which have lager energy-saving potential,proving the theoretical basis for the work of energy saving and emission reduction in the plant.The current methods of economic analysis in thermal system mainly have conventional thermal balance,circulation function method,equivalent heat drop method,which based manual calculations,and matrix analysis based computer calculation.In this paper,the equivalent heat drop method is used to study the energy-saving diagnostics and optimization for the unit.First,we take on the thermal performance testing of unit,collecting the important parameters of plants operation.Next,we analysis and calculate the economic indicators of unit to get the value of heat consumption and standard coal consumption based on these data.We set up mathematical model of loss analysis,and diagnose the flow efficiency of the unit,operating parameters,unit auxiliary equipment,heating systems and auxiliary power rates,and analysis the effect of each performance parameters on Unit Economy.Finally,according to the results of energy-saving diagnosis,the condenser vacuum,flow passage,a small turbine exhaust mode,water temperature reduction,the terminal temperature difference and part of the operating parameters of the unit are studied for energy-saving optimization.We find the appropriate solutions and energy optimization programs through analyzing these factors which caused large effects on Unit Economy.The coal consumption of unit is reduced after optimizing analysis results,which could bring certain economic benefits to the unit.