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A special program-controlled power supply for tower grounding resistance measuring device

A technology of ground resistance, measuring device, applied in the field of power supply

Active Publication Date: 2019-03-01
FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has proved that the non-dismantling grounding down conductor pole tower grounding resistance measuring device can reduce labor intensity and improve labor efficiency, but it needs to overcome the size and shunt of the injected current

Method used

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  • A special program-controlled power supply for tower grounding resistance measuring device

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Embodiment Construction

[0020] The technical solutions in the implementation of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. It should be understood that the following examples are only used to illustrate the present invention rather than limit the present invention. Other embodiments obtained by skilled persons all belong to the protection scope of the present invention.

[0021] Such as figure 1 As shown, a special program-controlled power supply for a tower grounding resistance measurement device includes an AC / DC conversion circuit, a battery power supply, a high-frequency / power frequency circuit, a pulse width adjustment circuit, a DC / AC conversion circuit, a current sampling circuit, a single-chip microcomputer program-controlled circuit, Protection circuit; AC / DC conversion circuit, battery power supply, high frequency\power frequency circuit, pulse width adjustment circuit, DC / AC conversion circuit, filter circuit are conn...

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Abstract

The invention relates to a special programmable power source for a pole grounding resistance measuring device. The programmable power source comprises an AC / DC conversion circuit, a battery power source, a high-frequency / power frequency circuit, a pulse width modulation circuit, a DC / AC conversion circuit, a filter circuit, a protection circuit, a single-chip programmable circuit and a current sampling circuit. With the special programmable power source for the pole grounding resistance measuring device of the invention adopted, voltage amplitude can be changed automatically according to the magnitude of injected current; and the inductive reactance of an overhead grounding wire can be improved by using a high frequency advantage, and the shunts of the current can be decreased.

Description

technical field [0001] The invention relates to the field of power supplies, in particular to a special program-controlled power supply for a tower grounding resistance measuring device, which is mainly applicable to the tower grounding resistance measuring device in the field of line operation and maintenance. Background technique [0002] Switching power supply is an electronic device that can provide a stable output of DC power or AC power for the load. With the development of society, the power consumption of industry and agriculture has risen sharply. The maintenance and operation of lines in power grid construction is particularly important, and the tower grounding system is a line Weak link in maintenance. In order to ensure that the lightning current is introduced into the earth without causing damage to the line insulation, it is necessary to ensure that the entire current loop is unimpeded. It has developed from the previous measurement method of removing the grou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R1/28
CPCG01R1/28
Inventor 穆景龙胡亚青裴玉杰葛长鑫徐建国鹿占锋刘强厉金野杨鹏徐洋薛志成赵金阳王智宇石基泰陈广兴王宏鑫高德健赵启东赵光楠李志轩
Owner FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY