方差分析在电厂燃气轮机性能监测系统中的应用

应用方差分析和时间序列模型建立了一套新的燃气轮机性能监测方法。该方法能够规避大气温度,功率因素的影响,只反映燃气轮机运行性能的变化;用该方法得到的方差基准线可用于对机组性能进行实时监控。为了克服大气温度等因素对燃气轮机各参数的影响,做到全年都能采用一个方差标准,本方法应用了时间序列模型来求取运行数据的方差。而为了消除不同工况对参数监测的影响,文中采用只监控典型工况的方法。

Application of a Variance Analysis for the Performance Monitoring Systems of Power Plant Gas Turbines

A new set of gas turbine performance monitoring methods has been established by using variance analysis and time sequence models.It can eliminate the influence of atmospheric temperatures and power factors and only reflect the change in gas turbine operating performance.The variance reference line thus obtained can be used for the real-time performance monitoring of a gas turbine unit.To overcome the impact of atmospheric temperatures and other factors on various parameters of the gas turbine,only one variance standard has been used the whole year round.The method employs a time sequence model to seek the variance of the operating data.To eliminate the impact of different operating regimes on the monitoring of parameters,a method was adopted to monitor only the typical operating regimes.