Alarm system evaluation method and device based on single analog quantity and alarm delayer

Abstract

The invention discloses an alarm system evaluation method and device based on single analog quantity and an alarm delayer; the method comprises the following steps: using a Markov chain to describe the delay alarm mechanism of the alarm system with preset alarm delay parameters; comparing a single alarm signal sample value with an alarm threshold in the delay alarm mechanism, thus determining the alarm state corresponding to the alarm signal sampling moment; solving an alarm system performance index value according to the alarm state and generation probability described by the Markov chain; respectively comparing the solved alarm system performance index value with the corresponding preset performance index standard value range, thus determining whether the alarm system performance satisfies requirements or not. The method and device can quantitatively evaluate the alarm system performance and determine whether the performance satisfies requirements or not, thus providing reliable basis for the alarm system performance optimization, reducing interference alarms, improving field operator alarm processing efficiency, and ensuring production safety.

Description

technical field [0001] The invention belongs to the field of signal processing, in particular to an alarm system evaluation method and device based on a single analog quantity and an alarm delayer. Background technique [0002] The alarm system plays a vital role in ensuring the safe production and high-efficiency operation of coal-fired generating units. However, the common problem at present is that there are too many alarm signals, and sometimes hundreds of The operator cannot deal with these alarms in time, ignores the alarm information, or even shuts down the alarm system. In order to judge whether the performance of the alarm system meets the requirements, it is necessary to correctly evaluate the performance of the existing alarm system, but at present, there is a lack of accurate definition and calculation methods for the evaluation indicators of alarm performance. Contents of the invention [0003] In order to solve the above problems, the first object of the pre...

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Problems solved by technology

[0002] The alarm system plays a vital role in ensuring the safe production and high-efficiency operation of coal-fired generating units. However, the common problem at present is that there are too many alarm signals, and sometimes hundreds of alarms, causing operators to be unable to deal with these alarms in time, ignoring the alarm information, or even shutting down the alarm system.

In order to judge whether the performance of the alarm system meets the requirements, it is necessary to correctly evaluate the performance of the existing alarm system, but currently there is a lack of accurate definitions and calculation methods for the evaluation indicators of alarm performance.

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