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Method for mounting current transformer at grounding down lead of operating lightning arrester

A technology of grounding down conductors and current transformers, which is applied in the direction of measuring current/voltage, instruments, measuring devices, etc., can solve the problems of electric shock injuries to personnel installing current transformers, improve power supply reliability, achieve good results, and avoid power outages Effect

Inactive Publication Date: 2017-12-22
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the arrester under the operating voltage is charged, the grounding down-conductor cannot be disconnected at will. If it is disconnected, there will be a high potential at the grounding down-conductor of the arrester, which will cause electric shock to the personnel installing the current transformer.

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  • Method for mounting current transformer at grounding down lead of operating lightning arrester
  • Method for mounting current transformer at grounding down lead of operating lightning arrester

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Embodiment Construction

[0026] The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

[0027] Such as figure 1 , 2 As shown, a method for installing a current transformer at the grounding down-conductor of a lightning arrester includes the following steps:

[0028] S1: Confirm the arrester information;

[0029] S2: Connect a branch circuit with an ammeter in parallel on the grounding down conductor of the arrester;

[0030] S3: Disconnect the grounding down conducto...

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Abstract

The invention relates to the field of operating methods of measurement and diagnosis technologies, and more specifically relates to a method for mounting a current transformer at a grounding down lead of an operating lightning arrester. The method comprises the steps for confirming information of the lightning arrester, connecting a branch circuit with a current meter to the grounding down lead of the lightning arrester in parallel, disconnecting the grounding down lead of the lightning arrester, embedding the current transformer into the disconnected grounding down lead, recovering the grounding down lead, fixing the current transformer, and removing the parallel branch circuit. The method effectively solves a problem of getting an electric shock when mounting the current transformer on the grounding down lead of the operating lighting arrester. In addition, the method is simple and convenient to operate, safe, reliable and good in effect, can avoid power failure of the lightning arrester and improves the power supply reliability.

Description

technical field [0001] The invention relates to the field of operation methods of measurement and diagnosis technology, and more specifically, relates to a method for installing a current transformer at the grounding down-conductor of an operating lightning arrester. Background technique [0002] Surge arrester is an important protective device to protect electrical equipment in power system from overvoltage. Surge arresters are widely used in substations because of their excellent non-linear characteristics and good current conduction capacity under overvoltage, and there are a large number of them. With the increase of the operating years of the arrester, incidents of damage to the protected equipment due to the failure of the arrester itself occur from time to time, especially for arresters with a voltage level of 110kV and above. Once an accident occurs, it will cause huge economic losses to users and power supply. Enterprises have serious adverse effects, so it is of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R15/00G01R19/00
CPCG01R15/00G01R19/00
Inventor 钟荣富陈家荣何俊达魏东亮薛峰
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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