Thresholds Optimization of Chemical Alarms Based on PCA Weight
Optimization of alarm threshold to avoid interference to operator due to the massive alarm was studied.Variable weight is firstly addressed by the method of principal component analysis (PCA) considering the relevance and importance degree.Then,the thresholds of alarms are optimized according to variable weight and alarms in combination with the international standards.Finally,variable data and alarm thresholds on the parallel coordinate is visualized and the areas of normal and abnormal operation and the change trend among the variables can be monitored to extract effective alarm values.Case study of crude atmospheric and vacuum operation verification showed that the proposed method can effectively reduce the number of alarms.
alarm thresholdoptimizationprincipal components analysisvariable weightnumber of alarms
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NSTL
万方数据
维普
