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System and method for dynamic tracking, analysis and record curve triggering of residual current
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A residual current and dynamic tracking technology, applied in the field of electric power, can solve problems such as difficult research and judgment, work errors, etc., and achieve the effect of improving efficiency and accuracy
Active Publication Date: 2020-06-30
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +2
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[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 is likely to cause work errors, and provides a system for triggering short messages by dynamic tracking, analysis and recording curves of residual current and method
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[0034] In this embodiment, a residual current dynamic tracking analysis record curve triggering short message system is characterized in that it includes a clamp sensor 9, a sampling circuit 8, a power supply circuit 7, a microcontroller 1, a storage module 6, a GPRS module 4, and a clock circuit 11 , display module 12, input and output keyboard 3, temperature sensor, GPS positioning module 2 and infrared communication interface 5, described sampling circuit, power supply circuit, microcontroller, storage module, GPRS module, clock circuit, display module, input and output keyboard , the temperature sensor and the GPS positioning module are respectively connected to the microcontroller, and the infrared communication interface is connected to the storage module.
[0035] In the invention, the signal proportional to the residual current of the line is output through the coil of the transformer, processed by the sampling circuit, filtered and amplified, and sent to the port of th...
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Abstract
The invention relates to a system and method for triggering short messages by dynamic tracking, analysis and recording curves of residual current, which 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 actual work, which is difficult to study and judge, and easily causes work errors, including clamps shape sensor, sampling circuit, power supply circuit, microcontroller, storage module, GPRS module, clock circuit, display module, input and output keyboard, temperature sensor, GPS positioning module and infrared communication interface, the sampling circuit, power supply circuit, microcontroller The device, storage module, GPRS module, clock circuit, display module, input and output keyboard, temperature sensor and GPS positioning module are respectively connected to the microcontroller, and the infrared communication interface is connected to the storage module. The invention monitors the residual current of the line in real time and optimizes the sending method of the early warning short message, which can filter the early warning information, enable the operation and maintenance personnel to better study and judge the fault, and improve the efficiency and accuracy of work.
Description
technical field [0001] The invention relates to the field of electric power technology, in particular to a system 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 protection in operation is set at 300mA and 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...
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