SOE (sequence of event) acquisition card and acquisition method thereof

Abstract

The invention discloses an SOE (sequence of event) acquisition card and an acquisition method thereof, and belongs to the field of electric power systems. According to the SOE acquisition card disclosed by the invention, CPLDs (complex programmable logic devices) are increased between a SOE communication module and parallel channels for being used as the SOE acquisition cards, one CPLD can receive data from a plurality of the parallel channels, and when the data is uploaded, only one I/O (input/output) port in the SOE communication module is required, so that the acquisition quantity of the SOE data can be expanded; the processing of the SOE data is respectively performed in the CPLDs, and the SOE data does not need to be transmitted to a CPU (central processing unit) for unified processing, so that the data processing efficiency is further improved and the resolution capability of events can be further improved; and furthermore, a timer and an input latch are increased, so that the filtering function of the SOE data is increased and the possible external interference is eliminated.

Description

technical field [0001] The invention relates to an SOE acquisition system, in particular to an SOE acquisition card and an acquisition method thereof. Background technique [0002] With the increasing scale and complexity of thermal power units, the production process information is ever-changing in an instant. When the unit fails, it is necessary to find out the real cause and take effective measures to prevent the recurrence of similar accidents. At this time, it is necessary to recall and record the incident. When an incident occurs, there is often a lot of information in the same second, and the sequence cannot be sorted out, which makes accident analysis very difficult. [0003] The Sequence of Events (SOE, Sequence of Events) system can more accurately reflect the changing order of each state and event in the production process by capturing and distinguishing the sequence of any two switching actions with a time interval of more than 1ms. Incident information can be ...

AI Technical Summary

Problems solved by technology

[0005] In the traditional SOE system, the synchronous acquisition of multi-channel signals and the sorting of switching data with event marks have become the bottleneck of system development. Due to the limitations of the hardware and software systems used, when the number of acquisition channels is large, multiple The group modules are expanded by I / O to meet the number of channels, and the synchronization requirements when collecting signals between multiple groups of modules will greatly increase the difficulty of software and hardware design. At the same time, the sorting of huge switching data will occupy a large amount of system resources. Reduce the real-time performance of the system

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