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A power frequency magnetic field acquisition method based on the periphery of a high-voltage transmission line

A technology of high-voltage transmission lines and power-frequency magnetic fields, applied in the fields of electrical digital data processing, instruments, calculations, etc., can solve the problems of reducing the accuracy of results, uneven current distribution, etc., achieve good simulation results, and improve the effect of calculation accuracy

Pending Publication Date: 2019-06-18
SHANGHAI MUNICIPAL ELECTRIC POWER CO +1
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Problems solved by technology

[0003] EHV transmission lines are high-current systems, which are easily affected by proximity effect and skin effect, resulting in uneven current distribution on the line
Therefore, if the current of each transmission wire is directly used to detect the magnetic field, the accuracy of the result will be reduced

Method used

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  • A power frequency magnetic field acquisition method based on the periphery of a high-voltage transmission line
  • A power frequency magnetic field acquisition method based on the periphery of a high-voltage transmission line
  • A power frequency magnetic field acquisition method based on the periphery of a high-voltage transmission line

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Embodiment Construction

[0056] 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.

[0057] figure 1 A model diagram showing the analog current and matching point settings of the present invention, such as figure 1 As shown, taking the single-circuit three-phase transmission line on the same tower as an example, a group of n analog currents are set on the concentric circles in the transmission wires of each phase, and the corresponding matching points are set on the surface of the transmission line and the number is the same as the number ...

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Abstract

The invention relates to a power frequency magnetic field obtaining method based on the periphery of a high-voltage transmission line. The method comprises the following steps of S10, simplifying an actual line to meet calculation of a power frequency magnetic field; S20, setting the positions and the number of simulated charges and matching points of the power transmission line; Step S30, establishing an equation set for solving the analog current by using the magnetic potential, setting a check point at a position, except the matching point, on the surface of the power transmission line, calculating the magnetic potential error of the check point by using the analog current, and if the requirement is not met, repeating the step S20 and recalculating the magnetic potential error; And S40,superposing the magnetic fields generated by the analog current by using a superposition theorem to obtain the magnetic induction intensity of any point in the field domain. Compared with the prior art, the method has the advantages of improving the calculation accuracy of the magnetic field around the high-voltage transmission line and the like.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transmission, in particular to a method for acquiring a power-frequency magnetic field around a high-voltage power transmission line. Background technique [0002] In recent years, some high-voltage transmission lines may cross public activity areas or even enter urban areas, but the electromagnetic radiation brought by transmission lines has caused electromagnetic pollution, which has deteriorated the environmental quality to a certain extent. Electromagnetic radiation will have a certain negative impact on people's quality of life, and even threaten people's health and personal safety. Under normal circumstances, the human body can adapt to the earth's magnetic field and weak electromagnetic noise. However, when the human body absorbs high-intensity electromagnetic radiation, the adjustment function of the human body will not be able to adapt and cause some damage. The magnetic fiel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 伏如祥完善姚贤炯王媚鲍晓华朱炜张文明陈伟俊
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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