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Audible noise calculating method for high-voltage direct current electric transmission line

A technology for high-voltage direct current and transmission lines, which is applied in the field of electric power and can solve problems such as difficulty in predicting and calculating the audible noise of transmission lines.

Active Publication Date: 2014-07-23
CHINA ELECTRIC POWER RES INST +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] In order to solve the problem of difficult prediction and calculation of audible noise of transmission lines encountered in the vigorous development of UHVDC transmission projects in my country, the present invention provides a calculation method for audible noise of HVDC transmission lines with 4-8 split conductors. The audible noise A sound level at each position below the 4-8 split conductors can be calculated conveniently and effectively; the noise calculated by the present invention can provide reference for the design, construction and operation of UHV DC transmission lines

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  • Audible noise calculating method for high-voltage direct current electric transmission line
  • Audible noise calculating method for high-voltage direct current electric transmission line
  • Audible noise calculating method for high-voltage direct current electric transmission line

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Embodiment Construction

[0063] Below in conjunction with example the present invention is described in detail.

[0064] The present invention provides a high-voltage direct current corona audible noise calculation method for 4-8 split conductors, which calculates the electric field intensity on the surface of the high-voltage direct current split conductors; calculates the offline audible noise level (summer) through the formula recommended by the present invention; through Add or subtract a seasonal correction constant to obtain audible noise levels for other seasons.

[0065] The content of each part of the present invention will be described in detail below in conjunction with the drawings and embodiments.

[0066] (1) Calculate the surface electric field strength of the high-voltage DC split wire

[0067] Various methods can be used to calculate the electric field strength at the surface of the split wire, such as successive image method, simulated charge method, finite element method, etc. The...

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Abstract

An audible noise calculation method for a high voltage DC power transmission line, comprising three parts: (1) calculating the surface electric field intensity of a high voltage DC multiple conductor, (2) calculating an audible noise level of the high voltage DC line in summer, and (3) obtaining an audible noise level of other seasons by adding or subtracting a correction term. This method is simple and feasible, and can effectively solve the problem of predicting an audible noise of an ultra-high voltage DC power transmission line.

Description

technical field [0001] The invention belongs to a method for obtaining audible noise in the field of electric power, and in particular relates to a method for calculating the audible noise of a high-voltage direct current transmission line with 4-8 split wires. Background technique [0002] In order to meet the demand for electricity for sustainable economic and social development, the construction of a strengthened power grid centered on high-voltage and ultra-high voltage power grids has become a strategic goal of power construction. When long-distance and large-capacity transmission is adopted, UHV transmission can effectively save line walking, help improve network structure, build transmission bottlenecks and achieve large-scale optimal allocation of resources, and the economic and social benefits are very obvious. Due to the increase of voltage level, the electromagnetic environment of UHV is different from that of 500kV lines. If the same split conductors of 500kV are...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H11/00
CPCG01R29/26G06F30/367G06F2119/10
Inventor 刘元庆郭剑陆家榆
Owner CHINA ELECTRIC POWER RES INST