Thresholds Optimization of Chemical Alarms Based on PCA Weight

Guixin ZHANG  Wende TIAN  Manman JIN

doi:10.12034/j.issn.1009-606X.216345

The Chinese Journal of Process Engineering >

2017 , Vol. 17 >Issue 3: 588 - 593

DOI: https://doi.org/10.12034/j.issn.1009-606X.216345

Process & Technology

Thresholds Optimization of Chemical Alarms Based on PCA Weight

Guixin ZHANG Wende TIAN Manman JIN

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College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China

Received date: 2016-11-01

Revised date: 2016-12-01

Online published: 2017-06-14

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Abstract

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.

Key words： alarm threshold; optimization; PCA; variable weight; number of alarms

Cite this article

Guixin ZHANG Wende TIAN Manman JIN . Thresholds Optimization of Chemical Alarms Based on PCA Weight[J]. The Chinese Journal of Process Engineering, 2017 , 17(3) : 588 -593 . DOI: 10.12034/j.issn.1009-606X.216345

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