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Induction ground electric field adjustment distance calculation method and device based on the finite element method

A technology of finite element method and distance adjustment, applied in calculation, computer-aided design, electrical digital data processing, etc., can solve problems such as inaccurate results

Pending Publication Date: 2022-01-07
TSINGHUA UNIV
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Problems solved by technology

[0005] For this reason, the first purpose of this application is to propose a method for calculating the adjustment distance of the induced geoelectric field based on the finite element method, so as to solve the technical problem that the results obtained by the existing method for calculating the adjustment distance are inaccurate

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  • Induction ground electric field adjustment distance calculation method and device based on the finite element method
  • Induction ground electric field adjustment distance calculation method and device based on the finite element method
  • Induction ground electric field adjustment distance calculation method and device based on the finite element method

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Embodiment 1

[0054] figure 1 It is a flow chart of a method for calculating the adjustment distance of the induced geoelectric field based on the finite element method provided by the embodiment of the present application.

[0055] like figure 1 As shown, the embodiment of the present application provides a method for calculating the adjustment distance of the induced geoelectric field based on the finite element method, including the following steps:

[0056] Step 110, determining the three-dimensional earth conductivity model of the induced geoelectric field, and determining the two-dimensional plane earth conductivity model according to the three-dimensional earth conductivity model;

[0057] Step 120, based on the two-dimensional plane earth conductivity model, determine the distribution of the induced geoelectric field at different frequencies according to the finite element method;

[0058] Step 130, determine the adjustment distance of the induced geoelectric field under different...

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Abstract

The invention relates to the technical field of magnetic storm induction geoelectric fields, in particular to an induction ground electric field adjustment distance calculation method and device based on the finite element method. The induction ground electric field adjustment distance calculation method based on the finite element method comprises the steps of determining a three-dimensional ground conductivity model of an induction ground electric field, and determining a two-dimensional plane ground conductivity model according to the three-dimensional ground conductivity model; based on a two-dimensional plane earth conductivity model, determining distribution conditions of induction earth electric fields under different frequencies according to a finite element method; and according to the distribution condition of the induction ground electric field under different frequencies, determining the induction ground electric field adjustment distance under different periods. According to the scheme, the invention is not influenced by the frequency range, can be used for calculating the adjustment distance in the whole geomagnetic disturbance period, effectively improves the calculation efficiency, and lays a foundation for accurately evaluating the geoelectric field and power grid risk of the coast effect in the magnetic storm period.

Description

technical field [0001] The present application relates to the technical field of magnetic storm induced geoelectric field, in particular to a method and device for calculating distance adjustment of induced geoelectric field based on finite element method. Background technique [0002] When a magnetic storm occurs, the violent disturbance of the geomagnetic field generates an induced geoelectric field, thereby inducing a current with a frequency of 0.0001-0.01Hz in the grounded conductor loop, which is called geomagnetically induced current (GIC). GIC flows into the transformer, causing half-wave saturation of the iron core, causing temperature rise, vibration, and noise increase in the transformer; the generated secondary hazards such as harmonics and reactive power fluctuations affect the safe operation of the entire power grid, and even cause large-scale power outages. In North America and other high-latitude regions, there have been many incidents of magnetic storms intr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F113/04
CPCG06F30/23G06F2113/04
Inventor 王璇张述铭
Owner TSINGHUA UNIV
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