300MW燃煤电厂热力系统仿真研究

基于过程系统工程的建模和仿真原则，针对某电厂300MW燃煤机组开发了一套稳态热力学仿真系统，并详细阐述了模型建立的基本思路和方法，通过改变输入参数、负荷和环境条件，仿真电厂在不同工况下的运行特性．结果表明：系统仿真所获得的结果与实际电厂的性能测试数据相比误差不超过2％；通过仿真可获得主要物流、能流的热力学参数（包括质量流量、温度、压力、比焓、比熵等）和主要设备的运行参数（包括汽轮机和泵的等熵效率、加热器端差、热传导系数等），为燃煤电厂的实际运行优化、炯分析、热经济学分析等提供基础数据．

Simulation on the Thermodynamic System of a 300 MW Coal-fired Power Plant

Based on the modeling and simulating principles of process systems engineering, a steady-state thermodynamic system has been developed for simulation of a 300 MW pulverized coal-fired power plant, of which the basic principles and modeling approaches are described in detail. By varying the input parameters, loads and environmental conditions, operation performance of the power plant is simulated under different working conditions. Results show that the relative error of performance data between simulation and performance test is less than 2%. The thermodynamic parameters of mass and energy flow （including mass flow rate, temperature, pressure, specific enthalpy, specific entropy, etc. ） and the main equipment running parameters （including isentropic efficiency of steam turbine and pump, terminal temperature difference of heater, heat conduction coefficient, etc. ）, which are obtained during simulation, may serve as a reference for actual operation and optimization, exergy analysis and thermo-economic analysis of coal-fired power plants.