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Online monitoring device for lightning arrester

A monitoring device and lightning arrester technology, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of inability to monitor the leakage current and the number of actions of the lightning arrester, and achieve the effects of convenient application, reduction of lightning impact residual voltage, and power saving

Pending Publication Date: 2018-06-15
XIAN SHENDIAN ELECTRONICS
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a lightning arrester online monitoring device, which adopts a new voltage limiting method and data sampling method to solve the problem that the existing lightning arrester online monitor cannot monitor the leakage current and the number of operations of the lightning arrester used in the AC and DC systems of 3kV and below

Method used

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  • Online monitoring device for lightning arrester
  • Online monitoring device for lightning arrester
  • Online monitoring device for lightning arrester

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Embodiment Construction

[0038] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0039] From image 3 It can be seen that the arrester online monitoring device in this embodiment mainly includes a sampling circuit, a signal conditioning circuit, a lightning detection circuit, a main control module, a power supply module and a display module.

[0040] From figure 2 It can be seen that the sampling circuit of this embodiment adopts a gas discharge tube 21 in parallel with a capacitor 24 to replace the nonlinear zinc oxide resistor 14, the current limiting resistor...

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Abstract

The invention relates to an online monitoring device for a lightning arrester. The online monitoring device comprises a sampling circuit, a signal conditioning circuit, a lightning stroke detection circuit, a main control module, a power supply module and a display module; the sampling circuit comprises a gas discharge tube, a capacitor, a current limiting resistor, a sampling resistor and a TVS;the signal conditioning circuit is used for collecting and conditioning voltage signals of both ends of the sampling resistor; the lightning stroke detection circuit is used for detecting lightning stroke signals at two ends of the sampling resistor in real time; the main control module is used for processing and outputting the voltage signals after voltage signals are conditioned via the signal conditioning circuit, the main control module is also used for controlling the power supply module to supply electric power to the signal conditioning circuit and counting and outputting the lightningstroke signals detected via the lightning stroke detection circuit, and the display module is used for displaying data output via the main control module. The online monitoring device disclosed in theinvention helps solve a problem that a conventional online monitoring device for the lightning arrester cannot monitor current leakage and the number of actions of the lightning arrester for alternating current and direct current systems of 3kV and below; the online monitoring device helps fill in the blank of online monitoring of the lightning arrester for the alternating current and direct current systems of 3kV and below, and helps improve protection over the lightning arrester for the alternating current and direct current systems of 3kV or more.

Description

technical field [0001] The invention relates to an online monitoring device for a lightning arrester, which is mainly used for online monitoring of the leakage current and the number of actions of the lightning arrester, especially for the online monitoring of lightning arresters for AC and DC systems of 3 kV or below, and belongs to the application field of online monitoring of electric power systems. Background technique [0002] As an overvoltage protection device for power equipment, the performance of surge arresters plays a vital role in the safe operation of power equipment. In order to ensure the normal operation of the arrester, it is necessary to monitor the arrester in real time through online monitoring equipment. [0003] At present, it is impossible to monitor the leakage current and the number of operations of the arrester used in the AC and DC systems of 3kV and below by using the traditional arrester on-line monitor. The main reasons are: [0004] 1) The co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/25G01R31/00
CPCG01R19/25G01R31/00
Inventor 叶德平段莹涛
Owner XIAN SHENDIAN ELECTRONICS
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