An Analog Acquisition Method Based on Stepped Dynamic Dead Zone

Abstract

The invention provides an analog quantity acquisition method based on a stepwise dynamic dead zone. According to the method, a fixed dead zone range is changed into a dead zone range which changes along time based on an analog quantity dead zone filtering method, and the dead zone range of the current received analog quantity is computed by a step function according to time difference of time when acquisition equipment receives analog quantity change data and receiving time of the processed analog quantity last time. The dead zone range continuously decreases along with continuously increasing of time difference by means of the characteristics of the step function. Change of the analog quantity can be reflected in real time, and the phenomenon of increasing of the computation load of the acquisition equipment due to frequent change of the analog quantity can be alleviated by considering real-time performance and effectiveness of analog quantity acquisition of the acquisition equipment.

Description

technical field [0001] The invention belongs to the field of electric power system automation, and in particular relates to an analog quantity acquisition method based on a dynamic ladder dead zone. Background technique [0002] With the rapid development of the field of power system automation, the scale of automation systems used in the power industry is increasing day by day, and the system architecture is becoming more and more complex, resulting in an increasing amount of data within the system. Especially in application scenarios such as wind power plants and high-voltage substations, the scale of real-time change data has exceeded 100,000. This is a great test for the processing ability and hardware resources of the monitoring background of the automation system, the gateway machine and other devices or equipment that need to collect all data in the system (hereinafter, the monitoring background is used as an example to replace such equipment). . In the real-time ch...

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Problems solved by technology

Since the dead zone range is a fixed value (actual value dead zone) or percentage (percentage dead zone), if the dead zone range is set small, a small change in the analog value will also exceed the dead zone, making monitoring background processing The amount of data increases; if the dead zone range is set large, although the data volume can be reduced, if there is a small change in the analog value for a long time, which does not exceed the set dead zone range, the monitoring background will appear that the analog value will not be refreshed. question

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