On-line arrester monitoring device with self-energy-taking function

A monitoring device and arrester technology, which is applied to measurement devices, output power conversion devices, instruments, etc., can solve problems such as dependence on weather, uneconomic workload, and insecurity, and achieve the effect of solving energy supply problems.

Inactive Publication Date: 2011-07-06
CHINA XD ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The arrester online monitoring module has been used by many manufacturers, but the energy supply mode of the interface module is an external energy supply mode, such as: external DC source, solar power supply, battery power supply, etc. These methods have certain limitations.
For example, the method of external DC source is costly and unsafe due to the introduction of lightning; the solar power supply method depends on the weather and cannot be realized indoors; the battery power supply method needs to be replaced regularly, so it is uneconomical and the workload is heavy

Method used

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  • On-line arrester monitoring device with self-energy-taking function
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  • On-line arrester monitoring device with self-energy-taking function

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Embodiment Construction

[0009] The following describes in detail the on-line monitoring device for self-energy extraction of the arrester of the present invention with reference to the accompanying drawings:

[0010] See figure 1 Shown is the equivalent circuit diagram of a zinc oxide arrester, which is composed of a nonlinear resistor R and a linear branch capacitor C. Where I r Is the resistive current, I C Is the capacitive current, I X Is the total leakage current.

[0011] See figure 2 As shown, the device of the present invention includes a CPLD (Complex Programmable Logic Device) and a power supply unit, a lightning arrester current acquisition unit, and a lightning arrester lightning strike frequency acquisition unit respectively connected to the CPLD. The output end of the CPLD is connected to a remote computer through an optical fiber.

[0012] The arrester current collection unit is connected to both ends of the arrester through a rectifier, and includes a first resistor R1, a third resistor R3...

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Abstract

The invention provides an on-line arrester monitoring device with a self-energy-taking function. The device comprises a CPLD (complex programmable logic device), a power supply unit, and a lighting stroke number acquisition unit of the arrester, wherein the output terminal of the CPLD is connected with a remote computer through optical fiber, the power supply unit is connected to two ends of the arrester through a rectifier and stores energy to both a second capacitor and a third capacitor through the arrester, and the stored energy are subjected to DC / DC conversion and used for supplying electricity. The monitoring device utilizes the characteristics of the arrester, utilizes the concepts of capacitor energy storage and low-voltage transformation to realize the self-energy-supply of a communication chip and solves the problem of difficult energy supply to an online monitoring interface module of the arrester.

Description

Technical field [0001] The invention relates to an online monitoring device for a lightning arrester, in particular to an online monitoring device for self-energy extraction of a lightning arrester. Background technique [0002] The lightning arrester online monitoring module has been used by many manufacturers' products, but the power supply mode of its interface module is external power supply, such as external DC source, solar power, battery power, etc. These methods have certain limitations. . For example, the external DC source is expensive and unsafe because of the introduction of lightning; solar power is dependent on the weather and cannot be achieved indoors; battery power requires regular replacement, which is uneconomical and heavy workload. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide a convenient and efficient on-line monitoring device for the self-acquisition of lightning arrester, and completely solve t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J15/00H02M3/00G01R19/17
Inventor 张杭严结实
Owner CHINA XD ELECTRIC CO LTD
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