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Two-layer real-time monitoring and alarm source tracing method based on dynamic and static coordinated differential analysis

A technology of difference analysis and real-time monitoring, applied in electrical testing/monitoring, testing/monitoring control systems, instruments, etc., can solve the problem of ignoring the coupling of industrial process variables

Active Publication Date: 2019-09-06
ZHEJIANG UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Traditional univariate alarm management is based on the 3σ criterion on statistical distribution, ignoring the coupling between industrial process variables

Method used

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  • Two-layer real-time monitoring and alarm source tracing method based on dynamic and static coordinated differential analysis
  • Two-layer real-time monitoring and alarm source tracing method based on dynamic and static coordinated differential analysis
  • Two-layer real-time monitoring and alarm source tracing method based on dynamic and static coordinated differential analysis

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Embodiment Construction

[0077] The present invention will be further described below in conjunction with the accompanying drawings and specific examples.

[0078] The upper-level monitoring algorithm proposed by the present invention and the alarm traceability method for the lower level comprise the following steps:

[0079] (1) Obtaining data to be analyzed: In this example, the operation data of the front pump of the thermal power unit equipment is used to test the monitoring method proposed by the present invention and implement corresponding alarm management strategies. A total of 12,799 samples were collected, with 20 measurement variables: power signal three selected values, ambient temperature (#6), steam pump A inlet temperature, steam pump A inlet pressure three selected values, front pump A outlet flow, front pump A Pump A motor radial bearing temperature A CP, front pump A motor radial bearing temperature CP, front pump A motor coil temperature U1, front pump A motor coil temperature U2, f...

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Abstract

The invention discloses a two-layer real-time monitoring and alarm source tracing method based on dynamic and static coordinated differential analysis. The upper-layer monitoring algorithm can effectively comprehensively consider the process volatility and the dynamic and static angles of the process state from a small scale; and in combination with the source tracing method based on the contribution figure and the transfer entropy, the alarm priority of the current lower-layer DCS system can be determined, and a fault source can be effectively positioned. According to the method provided by the invention, the controller adjustment capacity, and the dynamic and static online monitoring indexes of the process running state are synthesized to serve as the selection basis of an alarm management method, the interference alarm is reasonably suppressed, the key problem of alarm flooding is effectively solved, and thus the safe and efficient operation of the industrial process are ensured.

Description

technical field [0001] The invention belongs to the field of process monitoring and alarm management, and in particular relates to a dynamic and static angle collaborative difference analysis method, which can monitor the process state and process volatility from the distribution difference on a small scale, and proposes four corresponding alarm managements according to the monitoring results The method and the implementation method reasonably suppress the interference alarm and effectively locate the source of the fault. Background technique [0002] Alarm systems are crucial to the safe and efficient operation of modern industrial processes. In the process operation of industrial sectors such as electric power and public utilities, petrochemicals, etc., they give alarms of faults and prompt operators to deal with abnormal conditions in a timely manner. Since the emergence of the "Distributed Control System" (DCS) in the 1970s, the alarm variable has changed from the origin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B23/02
CPCG05B23/0275
Inventor 赵春晖赵诣翁建明鲍丽娟沙万里金玄玄
Owner ZHEJIANG UNIV
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