Research On Optimization Of Thermoelectric Load Distribution Of Regional Units

With the increasing reduction of coal of non renewable energy and the increasing use of electricity,saving energy and enhancing energy utilization efficiency have become the focus of the development of power generation industry in all countries.Under the environment of the implementation of electr icity price bidding in our country,the competition among the power generating companies is becoming drastic increasingly.How to reduce the cost of power generation and improve the market competitiveness of power generation group is the focus of future research.Combined heat and power generation technology is widely adopted by various countries because of its high thermal efficiency.The method of through optimal distribution of the thermoelectric load in plant further improving thermal economy has been studied by a large number of scholars and its practicality has been proved.Take the optimal distribution of the thermoelectric load in plant as based,optimal distribution of the thermoelectric load in plant can improve the regional economy,save cost of p ower generation group.The method of optimizing distribution will become the focus of future development.Taking a group of three units in a certain area as the research object,the optimal distribution of the thermoelectric load in plant is carried out.F irstly,the calculation model of Variable condition of heat supply unit is established,and the traditional steam turbine governing stage characteristic curve is improved to improve the accuracy of the calculation model.Secondly,analyzes the heat economic figure and economic figure of the heat supply unit,and take the standard coal consumption and minimum cost of coal consumption as the optimization target of thermoelectric load optimal distribution.Optimization method that taking exhaustive method and particle swarm optimization algorithm was used to establish the objective function of optimal distribution of the regional thermoelectric load.The results showed that thermoelectric load optimal distribution can reduce each unit average standard coal cons umption rate about 0.5g/(kW?h).Considering the economy of power generation group,three cases per kilowatt to reduce coal consumption costs were 0.0005RMB/(kW?h),0.0008RMB/(k W?h),0.001RMB/(kW?h).The results showed that: it is proved that the optimal distribution of thermal power load is not regular.And to thermal power plant,the case that the plant with a higher efficiency taking more powering load and the plant with a lower efficiency taking less powering is not certain to best.So is the unit.And there is a complex change relationship between coal consumption rate increment of unit and the load of heat and power.And through the study of regional thermoelectric load distribution optimization,it can improve the overall thermal economy and economy of the power generation group,which has a high reference value.