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Method for predicting audible noise of high-voltage direct-current transmission line

A transmission line, high-voltage direct current technology, applied in the direction of testing dielectric strength, fault location, etc., can solve the problem that the electric field strength on the surface of the wire is difficult to consider the influence of smog, and it is difficult to consider the influence of smog

Pending Publication Date: 2022-04-15
STATE GRID NINGXIA ELECTRIC POWER +1
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AI Technical Summary

Problems solved by technology

[0016] (1) It is difficult to consider the influence of haze when calculating the electric field intensity on the surface of the wire;
[0017] (2) The correction coefficient ΔP is difficult to take into account the influence of haze

Method used

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  • Method for predicting audible noise of high-voltage direct-current transmission line
  • Method for predicting audible noise of high-voltage direct-current transmission line
  • Method for predicting audible noise of high-voltage direct-current transmission line

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Embodiment Construction

[0054] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0055] Such as figure 1 As shown, the audible noise prediction method of HVDC transmission line:

[0056] (1) Calculating the maximum potential gradient on the surface of the HVDC transmission line conductor in hazy weather

[0057] The finite element method is used to calculate the ion flow field of the high-voltage direct current transmission line in haze weather. From the ion flow field, the electric field distribution ...

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Abstract

The invention discloses an audible noise prediction method for a high-voltage direct-current transmission line. The method comprises the following steps: S1, calculating the maximum potential gradient of the surface of a conductor of the high-voltage direct-current transmission line in hazy weather; s2, calculating the sound level A of audible noise at a certain position below the conductor in the hazy weather; therefore, the audible noise prediction method suitable for the haze weather is obtained.

Description

technical field [0001] The invention relates to the field of high-voltage direct current transmission lines, in particular to a method for predicting audible noise of high-voltage direct current transmission lines. Background technique [0002] At present, in order to meet the rapid development of society's electricity demand, high-voltage direct current transmission has become one of the main strategic goals of power grid construction. For long-distance, large-capacity transmission problems, high-voltage direct current transmission can be guaranteed in terms of economy, interconnection, and controllability, and can significantly improve social and economic benefits. However, with the increase of the DC transmission voltage level, the problem of the electromagnetic environment of the line is gradually serious, and electromagnetic environmental factors such as audible noise, radio interference, and power frequency electromagnetic field have become one of the main factors rest...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01R31/08
Inventor 肖清明韩利钱勇吴杨张庆霞方济中马锐潘洁马莉王凤欣霍耀佳孙帆
Owner STATE GRID NINGXIA ELECTRIC POWER
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