Impulse current measurement mechanism based on flexible Luo-coil

Abstract

The apparatus thereof comprises: a flexible Rogowski coil used for making the pulse current measurement for the current carrying conductor under test; a integrator used for making integration restore for the signals outputted from the flexible Rogowski coil in order to get the analog signals which is proportional with the derivate of the pulse current under test; a data sampling module used for making analog modulation for the analog signal outputted from the integrator in order to get discrete sampling signals; a A/D converter used for converting the analog signals to the digital signals; a CPU used for processing the data outputted from the A/D converter in order to get the pulse signal under test; a radio communication module used for making communication; a GPS module used for demarcating the clock of the CPU.

Description

technical field [0001] The invention relates to a pulse current measuring device based on a flexible Rogowski coil, in particular to the measurement of lightning current, and belongs to the technical field of electrical high voltage measurement. Background technique [0002] Lightning is an atmospheric discharge phenomenon that often occurs in nature. When a strong lightning strike occurs, a lightning current of up to hundreds of kA will be generated in its discharge channel. The generation process of lightning current is often accompanied by strong electromagnetic phenomena, which will bring serious harm to power transmission, electronic communication, air transportation and other fields. In order to effectively carry out research on lightning protection, lightning formation mechanism and other related aspects, how to accurately measure the waveform of lightning current is an urgent problem to be solved at present. [0003] The research on the characteristic parameters of...

AI Technical Summary

Problems solved by technology

Because the oscilloscope is expensive, does not have a good communication port, and can only record the waveform automatically once, and needs human intervention to record the second waveform, this kind of measurement device is difficult to apply in large quantities, especially in field applications

Moreover, the structure of most existing Rogowski coils is a hard shell structure, that is, the shell is a very thick metal shielding shell. When in use, the measured structure needs to be untied and passed through the Rogowski coil, that is, the coil cannot be opened.

Images