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Online zinc oxide arrester monitoring instrument

A lightning arrester and monitor technology, which is applied in the direction of instruments, measuring electricity, and measuring devices, can solve problems such as not being able to play a good role in safety protection, and achieve the effects of increasing safety and reliability, rationally deploying resources, and high equipment utilization.

Inactive Publication Date: 2014-03-12
BAODING SUPERMAN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the long-term exposure to power frequency voltage, impulse voltage, and various external environmental factors, the zinc oxide lightning arrester tends to age and fail. If the installed zinc oxide arrester fails, the power supply system may be struck by lightning at any time in case of thunderstorms. It is possible that it will not be able to play a good role in safety protection. Therefore, monitoring whether the zinc oxide arrester fails is an important measure to ensure the safety of the power supply system.

Method used

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Embodiment 1

[0012] Depend on figure 1 It can be seen from the shown embodiment that it includes multiple voltage isolation samplers and multiple lightning arrester intelligent monitors, the output end of each voltage isolation sampler is connected to the intelligent analog input module, and the output end of the intelligent analog input module is connected to the wireless communication module; the leakage current detection output terminal and lightning trigger pulse output terminal of each lightning arrester intelligent monitor are respectively connected to the intelligent analog input module, and the output terminals of the two intelligent analog input modules are connected to the wireless communication module; the single-chip MCU is a The I / O port is connected to the wireless communication module for wireless communication with the voltage isolation sampler and the lightning arrester intelligent monitor; the single-chip MCU is one, and its I / O port is also connected to the display screen...

Embodiment 2

[0017] Depend on figure 2 Shown embodiment can know, comprise a voltage isolation sampler and a surge arrester intelligent monitor, the leakage current detection output end of voltage isolation sampler output end and surge arrester intelligent monitor is by the I / O of single-chip microcomputer MCU by phase difference detection circuit O port connection, the phase difference detection circuit is two zero-crossing comparators mainly composed of operational amplifiers, one of the zero-crossing comparator input terminals is connected to the output terminal of the voltage isolation sampler; the other zero-crossing comparator input terminal is connected to the lightning arrester intelligent The leakage current detection output terminal of the monitor is connected; the two zero-crossing comparator output terminals are respectively connected to the I / O port of the single-chip MCU; the lightning trigger pulse output terminal of the lightning arrester smart monitor is interrupted by the...

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Abstract

The invention discloses an online zinc oxide arrester monitoring instrument which comprises at least one voltage isolation sampler and at least one intelligent arrester monitor, wherein the output end of the voltage isolation sampler and the leakage current detection output end of the intelligent arrester monitor are connected with I / O ports of a micro controller unit MCU through a phase difference detection circuit or through respective intelligent analog input modules, and an output signal of the micro controller unit MCU is connected with an alarm device and / or a display through an I / O port. The online zinc oxide arrester monitoring instrument has the characteristics of being timely and accurate in detection, safe and reliable, high in degree of automation and the like.

Description

technical field [0001] The invention relates to an on-line monitoring instrument for a zinc oxide arrester. Background technique [0002] Zinc oxide arrester is mainly used to limit the lightning overvoltage transmitted from the line or the internal overvoltage caused by operation, and is one of the important protection devices to ensure the safe operation of the power system. However, due to the long-term exposure to power frequency voltage, impulse voltage, and various external environmental factors, the zinc oxide lightning arrester tends to age and fail. If the installed zinc oxide arrester fails, the power supply system may be struck by lightning at any time in case of thunderstorms. It is possible that it will not be able to play a good role in safety protection. Therefore, monitoring whether the zinc oxide arrester fails is an important measure to ensure the safety of the power supply system. Contents of the invention [0003] The technical problem to be solved by ...

Claims

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Application Information

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IPC IPC(8): G01R31/00G01R25/00G01R19/00
Inventor 王艳辉生西奎李明霞满永亮
Owner BAODING SUPERMAN ELECTRONICS