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A method for measuring the potential distribution of ground electrodes

A potential distribution and measurement method technology, applied in the direction of measuring devices, measuring electrical variables, measuring current/voltage, etc., can solve the problems of heavy measurement workload, inconvenient measurement, and difficult wiring, etc., and achieve high reliability and strong practicability , the effect of saving resources

Active Publication Date: 2018-12-25
STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current measurement method requires a huge amount of measurement work, and it is necessary to manually set up a test line of more than 10km; there are problems such as difficulty in setting out the line, large interference, heavy workload, and inconvenient measurement.

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  • A method for measuring the potential distribution of ground electrodes
  • A method for measuring the potential distribution of ground electrodes
  • A method for measuring the potential distribution of ground electrodes

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] A method for measuring the potential distribution of a ground electrode, comprising the following steps:

[0025] According to the location of the ground electrode and the topographical conditions, select n measurement points A 1 …A n ;

[0026] Obtain the distance x between the n measuring points and the center point O of the grounding pole respectively n ;

[0027] with A n Centered, OA n Choose a distance of L in the direction n Two points, measure the potential difference U between the two points n , while measuring the ground electrode into the ground current I c ;

[0028] According to the maximum grounding current I of the grounding electrode max , according to the following formula to convert the potential difference to get U′ n ,

[0029] U' n =U n ·I max / I c ;

[0030] According to U' n Calculate the potentia...

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Abstract

The invention provides a potential distribution measurement method for a grounding electrode. The method comprises: according to the location and topographic condition of a grounding electrode, n measuring points from A1 to An are selected; distances xn between the n measuring points and the central point O of the grounding electrode are obtained respectively; two points with the distance of Ln in an OAn direction is selected by using the An as the center, a potential difference Un between the two points is measured, and a ground current Ic of the grounding electrode is measured; according to a maximum ground current Imax of the grounding electrode, potential difference conversion is carried out to obtain U'n; and on the basis of the U'n, potential values of the measuring points are calculated and a potential distribution map is obtained based on the potential values. According to the invention, the method has advantages of small measuring error, saved resources, high reliability and practicability.

Description

technical field [0001] The invention relates to the field of ground electrodes of converter stations, in particular to a method for measuring the potential distribution of ground electrodes. Background technique [0002] High-voltage DC transmission technology has been applied on a large scale. As an important part of the DC transmission system, the ground electrode has an impact on the surrounding environment that cannot be ignored. The measurement of the ground electrode potential is an important means to analyze the impact of the ground electrode on the environment. The current measurement method requires a huge amount of measurement work, and it is necessary to manually set up a test line of more than 10km; there are problems such as difficulty in setting out the line, large interference, heavy workload, and inconvenient measurement. Contents of the invention [0003] The invention provides a simple and practical method for measuring the potential distribution of the g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/28
CPCG01R19/28
Inventor 刘小江刘凡甄威
Owner STATE GRID SICHUAN ELECTRIC POWER CORP ELECTRIC POWER RES INST