大型热力发电机组能耗参数的统计分析与应用

基于机组长期运行数据和在线性能计算数据,统计分析了机组的实际性能特性,提出与过程热力特性及热力试验标准相一致的机组性能稳定态判别准则。由筛选出的满足稳定态准则的数据统计分析分别得出了机组在不同的外界边界条件和不同运行参数下以及同一运行工况内在线性能计算模型输出的不确定度范围,为基于模型的优化决策调整和诊断提供参考。统计得出的热力机组煤耗量特性曲线反映的是机组在实际运行条件下的真实特性,并以厂内负荷分配方案为例,验证了针对性经济运行措施的有效性。

Statistical Analysis and Application of Energy-consumption Parameters of Large-sized Thermal Power Plants

Based on the long term operating data and on-line performance calculation ones of a power plant,a statistico-analytical study was performed of the actual performance characteristics of the plant.Proposed was a criterion for discriminating the plant performance steady state compatible with the process thermodynamic characteristics and thermal test standards.Through a statistical analysis of the sifted out data,which meet the steady-state criterion,obtained respectively was the uncertainty range of the output of an on-line performance calculation model for plants under different outside boundary conditions,different operating parameters as well as identical operating conditions,thus providing useful reference data for optimization decision-making adjustment and diagnosis both based on the model in question.The coal consumption characteristic curves of the plant obtained through statistical calculations reflect the actual characteristics of the plant under real operating conditions.With the in-plant load distribution version serving as an example,the effectiveness of the measures taken for economic operation has been verified.