Lightning arrester online monitoring device suitable for low temperature operation and lightning arrester online monitoring method suitable for low temperature operation

Abstract

The invention relates to the technical field of lightning arrester online monitoring, particularly relates to a lightning arrester online monitoring device suitable for low temperature operation and alightning arrester online monitoring method suitable for low temperature operation, and aims at a gapless metal oxide lightning arrester. The device comprises a heat preservation box, a shell and a circuit board, wherein the heat preservation box is arranged in the outermost layer, the shell is arranged in the second outermost layer and the circuit board is arranged in the innermost layer. The circuit board is connected on the supporting column of the bottom part of the shell. The shell is directly arranged in the heat preservation box. The heat preservation box and the shell are closely fit.The device has great heat preservation performance and sealing performance and is suitable for low temperature operation and can perform accurate measurement, reliable communication, stable display and timely alarm under the severe natural environment so that the reliability can be enhanced, the fault rate can be reduced, the workload of the maintenance personnel can be reduced and safe and stable operation in the low temperature field can be realized. The device also has the lightning arrester state data remote transmission function and can timely upload the discovered abnormity so that thefailure lightning arrester can be handled in time, the electric power accident can be avoided and thus the device has high economic benefit and social significance.

Description

Technical field [0001] The invention relates to the technical field of on-line monitoring of lightning arresters, in particular to an on-line arrester monitoring device and a measuring method for a gapless metal oxide arrester suitable for low-temperature operation. Background technique [0002] At present, the country is vigorously developing smart power grids, and the lightning arrester online monitoring device is an important part of the smart power grid. The lightning arrester online monitoring device can accurately determine the working condition of the arrester by monitoring the leakage current of the arrester, so that the maintenance can be carried out in time before the failure of the primary equipment. [0003] In northern my country, the application environment of the lightning arrester online monitoring device is relatively complicated. The temperature in winter from 40°N to the border is extremely low, usually -25℃~-55℃. Such a harsh environment seriously threatens the ...

AI Technical Summary

Problems solved by technology

[0005] (1) In a low-temperature environment, the heat preservation and sealing effect of the device package is not good, and the performance of insulating materials and metal materials is reduced;

[0006] (2) In a low temperature environment, the consumption of the power supply itself increases, and the efficiency drops sharply, resulting in unstable power supply of the power supply, abnormal operation of the monitoring device, and even a crash;

[0007] (3) In a low-temperature environment, changes in the physical properties of electronic devices cause the hardware circuit of the monitoring device to fail to work;

[0008] (4) In the low temperature environment, the accuracy of the transformer cannot fully meet the technical index requirements, resulting in unreliable front-end data collection

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