Method for establishing abnormal event early warning system based on expert experience and historical data

A technology of unusual events, expert experience, applied in the chemical industry

Inactive Publication Date: 2015-12-23
CHINA HUANQIU CONTRACTING & ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, with the expansion of system scale and the simplicity of signal acquisition, operators need to face a large amount of system information

Method used

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  • Method for establishing abnormal event early warning system based on expert experience and historical data
  • Method for establishing abnormal event early warning system based on expert experience and historical data
  • Method for establishing abnormal event early warning system based on expert experience and historical data

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Embodiment Construction

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0033] figure 1 It is a flowchart of a method for establishing an abnormal event early warning system based on expert experience and historical data according to an embodiment of the present invention; figure 1 As shown, the method includes the following steps:

[0034] The first step is to identify abnormal event scenarios, specifically:

[0035] Step 1.1: Identify the abnormal events that may occur in the chemical system through hazard and...

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Abstract

The invention discloses a method for establishing an abnormal event early warning system based on expert experience and historical data. The method includes three steps; a model is established offline in the first two steps; and the model is applied in real time and offline in the third step. According to the method, alarm data are continuously acquired, and the expert experience is used in combination, and therefore, an abnormal event early warning system is updated regularly; the system is implemented online, and the state change of variables are continuously monitored; the probability of abnormal events which may occur is predicted in real time, and root causes causing deviation are analyzed continuously; and an operator can be timely informed of the change of the system, and therefore, the operator can be assisted to take appropriate measures in time. With the Bayesian network-based early warning system management method adopted, the randomness and uncertainty of a real process can be embodied, and complexity of consideration on all variables in process knowledge modeling can be omitted, and correlativity between monitoring variables can be reflected, and discovery and judgment of fault sources can be benefitted for the operator.

Description

Technical field [0001] The present invention relates to the field of chemical engineering, in particular to a method for establishing an abnormal event early warning system based on expert experience and historical data. Background technique [0002] In the early industrial enterprises, the control system was relatively simple, and each alarm signal was directly connected to the central control room through a hard wire, but this method was costly and complicated to maintain, and could not achieve good results. With the widespread use of programmable logic controllers (PLC), field bus control systems (FCS) and distributed control systems (DCS), industrial production has become increasingly complex and large-scale. At the same time, the losses caused by production accidents have also attracted more and more attention, because they will not only affect the reputation and benefits of enterprises, but also greatly affect the overall development of related industries. However, countri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 王杭州徐文浩丁泉会王雪梅白硕
Owner CHINA HUANQIU CONTRACTING & ENG CO LTD
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