Research On Economical Operation Of Thermal Power Generation

The economic operation of the peaking units in thermal power plants directly affect the economic operation of the whole power grid,so in order to minimize the peaking operation of thermal power plant cost,operation mode of peak units need to make the right choice.The research on low load operation mode and operation mode of the two shift operation,and analyses the running safety,mobility,peak amplitude,failure rate and economic and other aspects of the two peak load operation mode.According to the nonlinear characteristics of energy consumption of thermal power generating units,considering the different energy consumption in different load operation modes under unit load peaks and valleys and generating units,and ultimately determine the critical time of the unit load operation mode,to determine the different time optimal load operation mode.In this paper,the load distribution method of the low load operation mode of the thermal power generating unit is analyzed in detail,and the load distribution method based on the principle of the micro-increment of the thermal characteristic curve continuous and discontinuous is given.And the model of load distribution based on genetic algorithm and particle swarm optimization algorithm is proposed.Taking the unit operating economy as the peaking target,the active power of the generator set is used as the optimization variable,and the genetic algorithm and the particle swarm algorithm are simulated.During the process of load distribution,the generator sets,according to their own energy dissipation characteristics,through the continuous iteration,through the comparison of genetic algorithm and particle swarm algorithm convergence performance and the optimal solution quality,and ultimately determine the optimal load distribution schemeFinally,the subject of the use of examples,three coal-fired power generating units of thermal power plant,the optimum load operation mode,and the optimal distribution of load using particle swarm optimization algorithm will make the peak power unit,unit of thermal power plants to achieve optimal economic operation.