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Power frequency electric field acquisition method based on the periphery of a high-voltage transmission line

A technology of high-voltage transmission lines and power frequency electric fields, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of large amount of calculation, etc., and achieve strong field adaptability, high calculation accuracy, and small calculation amount Effect

Pending Publication Date: 2019-06-21
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

Since the number of linear equations needed to solve is closely related to the node density in the field, when the accuracy is the same, the two methods are more computationally intensive

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  • Power frequency electric field acquisition method based on the periphery of a high-voltage transmission line
  • Power frequency electric field acquisition method based on the periphery of a high-voltage transmission line
  • Power frequency electric field acquisition method based on the periphery of a high-voltage transmission line

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0046] figure 1 The electric field equivalent model diagram of the high-voltage transmission line of the present invention is shown, as figure 1 As shown, the simulated charge method can be divided into two forms, two-dimensional and three-dimensional, when calculating the electric field of the transmission line. The overhead line is regarded as an infinitely long straight wire, and the height of the lowest point of the line sag to the ground is taken as ...

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Abstract

The invention relates to a power frequency electric field acquisition method based on the periphery of a high-voltage power transmission line, and the method comprises the following steps: S10, enabling the power transmission line to be simplified meeting the engineering precision requirement in order to facilitate the calculation and analysis of the electric field distribution around the power transmission line; S20, calculating a potential coefficient matrix of the power transmission line by resetting analog charges and matching point positions in the simplified model of the power transmission line; and S30, calculating the charges of the wire per unit length according to the potential coefficient matrix and the voltage vector, obtaining an electric field generated by the charges by using a superposition theorem, finally verifying the calculation precision, and repeating the step S20 if the calculation precision does not meet the requirements. Compared with the prior art, the methodhas the advantages of relatively high calculation precision and the like.

Description

technical field [0001] The invention relates to high-voltage power transmission technology, in particular to a method for obtaining power frequency electric fields around high-voltage power transmission lines. Background technique [0002] In recent years, with the continuous development of the power system and the increase of ultra-high voltage transmission, the electromagnetic interference and electromagnetic environment problems of the power system have been paid more and more attention by people. High-voltage transmission lines may cross public areas or even enter urban areas. The electric field strength generated by these high-voltage transmission lines has become a problem that cannot be ignored in the field of high-voltage transmission technology and environmental protection. [0003] The main sources of electromagnetic environmental problems caused by transmission lines are: the high voltage and high current on the transmission line conductors generate strong electri...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 高小庆袁奇龚景阳王媚鲁炜金春峰陈伟俊
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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