Method and system for generating measuring point alarm and reset information in background of distributed control system

A decentralized control system and measuring point technology, applied in the general control system, control/regulation system, program control, etc., can solve problems such as message loss, failure to check and receive alarm and reset information in time, and increase hidden dangers in the operation of the control system. The effect of avoiding hidden dangers in operation and improving operation safety

Active Publication Date: 2021-10-08
XIAN THERMAL POWER RES INST CO LTD +1
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Problems solved by technology

However, due to the communication between the upper computer and the lower computer, message loss may occur. At this time, the alarm and reset messages of the lower computer cannot be sent to the upper computer in time. Return information, increasing the operation hidden danger of the control system

Method used

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  • Method and system for generating measuring point alarm and reset information in background of distributed control system
  • Method and system for generating measuring point alarm and reset information in background of distributed control system
  • Method and system for generating measuring point alarm and reset information in background of distributed control system

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Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0056] Such as figure 1 As shown, the method for generating measuring point alarm and reset information in the backstage of the distributed control system of the present invention includes:

[0057] Step 1: Deploy a real-time database and establish a measuring point information table for measuring point information in the decentralized control system. The measuring point information table includes the analog measuring point information table and the switch measuring point information table:

[0058] Each analog measurement point information table includes: measurement point value, alarm threshold value, current limit state, alarm type, whether the alarm is in progress, whether the alarm ...

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Abstract

The invention discloses a method and system for generating measurement point alarm and reset information in a background of a distributed control system. The method comprises the steps of: deploying a real-time database, and building a measurement point information table; judging a real-time value in an analog quantity measurement point information table in the real-time database of an upper computer and an alarm out-of-limit threshold value of a measurement point to obtain an analog quantity measurement point line-crossing state result; comparing the line crossing state result of the measuring point with an alarm state stored in a library; according to real-time values and alarm modes in a switching quantity measuring point information table in the real-time database of the upper computer, judging the measuring point alarm state of a switching quantity; comparing the judged alarm state result of the measuring point with an alarm state stored in the library; and ending the background alarm generation process, and continuing the next round of background alarm detection after a fixed period time. According to the method, monitoring hidden dangers caused by loss of alarm and reset messages can be prevented; the situation that messages may be lost due to communication between the upper computer and a lower computer is avoided, and the operation safety of the control system is improved.

Description

technical field [0001] The invention relates to an alarm method for a decentralized control system, in particular to a method and a system for generating measuring point alarm and reset information in the backstage of the decentralized control system. Background technique [0002] In the distributed control system, if the value of the measuring point is abnormal, the process control station of the lower computer will send a process alarm message to the alarm receiving module of the upper computer, and send the alarm information of the measuring point, such as the alarm action of the analog quantity exceeding the limit, the switch Quantity alarm action; if the value of the measuring point changes from abnormal to normal, the process control station of the lower computer will send a reset message to the background to send the information of the measuring point reset, such as the analog quantity over-limit alarm reset and the switch value alarm reset. After the alarm receiving ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCG05B19/41865G05B2219/33273Y02P90/02
Inventor 赵亮杨柳陶洪强杨渊贾泽冰厉超翟亮晶徐深房康
Owner XIAN THERMAL POWER RES INST CO LTD
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