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Method and device for arranging buried pipeline local grounding points

A technology of buried pipelines and grounding points, which is applied to measuring devices, instruments, and measuring electrical variables. It can solve problems such as low accuracy and lack of standardized operating procedures, so as to reduce subsequent engineering quantities and material losses, and avoid subjective factors. , Optimizing results with accurate results

Active Publication Date: 2016-09-28
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and device for arranging local grounding points of buried pipelines, which is used to solve the problems of low accuracy and lack of standardized operating procedures for the method of arranging local grounding points for buried pipelines based on experience

Method used

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  • Method and device for arranging buried pipeline local grounding points
  • Method and device for arranging buried pipeline local grounding points
  • Method and device for arranging buried pipeline local grounding points

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Embodiment 1

[0059] The buried pipeline 7 is a hollow buried cylindrical conductor covered with an insulating anti-corrosion layer 5. After the buried pipeline 7 is divided into several small sections through the local grounding point, the entire buried pipeline 7 is equivalent to being divided into several small sections. The hollow buried cylindrical conductor; the ground electrode 6 is a conductor or a combination of several conductors buried in the ground to be connected to the ground, which can also be regarded as a buried cylindrical conductor; because any point in the soil around the buried conductor The potential of the buried conductor is jointly generated by the leakage current of all buried conductors; therefore, when calculating the pipe-to-ground potential of the buried pipeline 7, it is necessary to obtain the leakage current of each buried conductor at the corresponding position on the buried pipeline 7 distributed.

[0060] see image 3 , the buried pipeline 7 is divided i...

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Abstract

The invention discloses a method and a device for arranging buried pipeline local grounding points, which relate to the technical field of buried pipeline protection and aim at solving the problems of low accuracy and lacked standard operation process when local grounding point arrangement is carried out on the buried pipeline according to experience. The method of arranging buried pipeline local grounding points comprises steps: an initial pipe-ground potential difference and pipe-ground potential differences from a first to an Hth are acquired; the minimal pipe-ground potential difference and the corresponding position vector are then acquired; the minimal pipe-ground potential difference is then compared with the maximal pipe-ground potential allowed by the buried pipeline, and when conditions are met, the acquired position vector corresponding to the minimal pipe-ground potential difference is the target result; or otherwise, one is added to the number of local grounding points and the minimal pipe-ground potential difference is then acquired again until the conditions are met. The method of arranging buried pipeline local grounding points provided by the invention is used for optimally arranging the buried pipeline local grounding points.

Description

technical field [0001] The invention relates to the technical field of buried pipeline protection, in particular to a method and a device for arranging local grounding points of buried pipelines. Background technique [0002] With the continuous development of the power system, there are more and more long-distance and large-capacity power transmission projects. For such power transmission projects, in the prior art, power transmission is generally realized through a high-voltage DC grounded transmission system. This HVDC grounded power transmission system adopts a single-pole-ground operation mode at the initial stage of operation, annual maintenance, and troubleshooting. The current can be as high as thousands of amperes; therefore, in this case, when the DC ground electrode is relatively close to the buried pipeline used to transport oil and gas resources, the DC current flowing in the ground will make the pipe-ground potential distribution of the buried pipeline Unbalan...

Claims

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Application Information

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IPC IPC(8): G01R19/00
CPCG01R19/00
Inventor 廖永力张波孟晓波曾嵘邹林李锐海何金良曹方圆陈晓张巍吴新桥张贵峰张曦龚博朱烨
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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