A residual current dynamic tracking analysis and recording curve triggering short message device and method

Abstract

The invention relates to a residual current dynamic tracking analysis record curve triggering short message device and method. The problems that during actual work, operation and maintenance personnelreceive a large amount of pre-warning information of the same kind within short time, accordingly research and judgment are difficult, and work errors are easily caused are mainly solved. The devicecomprises a pincerlike sensor, a sampling circuit, a power supply circuit, a microcontroller, a storage module, a GPRS module, a clock circuit, a display module and an input and output keyboard; the microcontroller comprises an analog-digital conversion module, a data check module, a pre-warning information analysis module and a short message sending control module; the sampling circuit, the powercircuit, the storage module, the GPRS module, the clock circuit, the display module and the input and output keyboard are connected with the microcontroller separately. By means of the device and method, residual current of a line can be monitored in real time, a pre-warning short message sensing method is optimized, and the pre-warning information of the same kind can be directly screened and removed, so that the operation and maintenance personnel better research and judge faults, and the work efficiency and accuracy are improved.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a device and method for dynamically tracking, analyzing and recording curves of residual current to trigger short messages. Background technique [0002] At present, the intelligent general insurance installed in rural areas generally has four types of rated residual operating current values: 75mA, 150mA, 300mA and 500mA. According to the national standard, the rated operating current value of the intelligent general insurance in operation is set at 300mA or below, and the actual operating residual current value is 80% of the rated operating current value, that is, 300mA×0.8=240mA. Therefore, if you want to determine the troubleshooting time at Before the intelligent total protection action, we must ensure that the warning information is sent below 220mA. At present, the common methods of remote monitoring and early warning are monitoring system and short message early w...

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the problem that operation and maintenance personnel receive a large amount of early warning information of the same type in a short period of time in the actual work of the prior art, which is difficult to study and judge, and easily causes work errors, and provides a device for triggering short messages by dynamically tracking, analyzing and recording curves of residual current and method

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