Induction ground electric field calculation method and system considering coast effect

A technology of coastal effects and calculation methods, applied in calculation, design optimization/simulation, special data processing applications, etc.

Pending Publication Date: 2021-12-10
SHANDONG UNIV
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Problems solved by technology

Relevant scholars have established one-dimensional and three-dimensional earth conductivity models for local coastal areas in Lingao, Guangdong, and calculated the induced geoelectric field during the geomagnetic storm on November 9, 2004. The calculation accuracy of the established three-dimensional model is 18% higher than that of the one-dimensional model. , but there is still a 12% error compared with the measured data. These errors may be caused by ignoring the attenuation effect of the ionosphere on electromagnetic waves during the simulation of geomagnetic disturbances

Method used

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  • Induction ground electric field calculation method and system considering coast effect
  • Induction ground electric field calculation method and system considering coast effect
  • Induction ground electric field calculation method and system considering coast effect

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Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1 of the present disclosure provides a method for calculating the induced geoelectric field considering the coastal effect.

[0053] Such as figure 1 A calculation method of the induced geoelectric field taking into account the coastal effect is shown, comprising the following steps:

[0054] Obtain the influencing factors of the distribution characteristics of the induced geoelectric field in the sea-land boundary area;

[0055] According to the influencing factors of the distribution characteristics and the three-dimensional earth conductivity model, the distribution of the induced geoelectric field when the geomagnetic disturbance occurs is obtained;

[0056] Wherein, in the simulation process of the three-dimensional earth conductivity model, the attenuation of electromagnetic waves and the geomagnetic distribution of ionospheric currents in different directions are comprehensively considered, and the control variable method is used to simulate and analy...

Embodiment 2

[0109] Embodiment 2 of the present disclosure provides an induced geoelectric field calculation system considering coastal effects.

[0110] Such as Figure 16 A calculation system for induced geoelectric field taking into account the coastal effect is shown, including:

[0111] The obtaining module is configured to obtain the influencing factors of the distribution characteristics of the induced geoelectric field in the sea-land boundary area;

[0112] The calculation module is configured to obtain the distribution of the induced geoelectric field when the geomagnetic disturbance occurs according to the distribution characteristic influencing factors and the three-dimensional earth conductivity model;

[0113] Wherein, in the simulation process of the three-dimensional earth conductivity model, the attenuation of electromagnetic waves and the geomagnetic distribution of ionospheric currents in different directions are comprehensively considered, and the control variable meth...

Embodiment 3

[0116] Embodiment 3 of the present disclosure provides a computer-readable storage medium.

[0117] A computer-readable storage medium, on which a program is stored. When the program is executed by a processor, the steps in the method for calculating the induced geoelectric field considering the coastal effect as described in Embodiment 1 of the present disclosure are implemented.

[0118] The detailed steps are the same as the calculation method of the induced geoelectric field considering the coastal effect provided in the first embodiment, and will not be repeated here.

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Abstract

The invention belongs to the technical field of induction ground electric fields, and provides an induction ground electric field calculation method and system considering a coast effect, and the method comprises the following steps of obtaining the induction ground electric field distribution characteristic influence factors of a sea-land boundary region; according to the distribution characteristic influence factors and a three-dimensional ground conductivity model, obtaining the distribution of an induction ground electric field when geomagnetic disturbance occurs, wherein the three-dimensional ground conductivity model considers the attenuation of electromagnetic waves and the geomagnetic distribution of the ionized layer currents in different directions. According to the invention, the three-dimensional ground conductivity model is established, the distribution condition of the induction ground electric field of the ionospheric currents in different directions is calculated and analyzed, and a reliable basis is provided for the risk assessment of a power grid GIC.

Description

technical field [0001] The disclosure belongs to the technical field of induced geoelectric field, and in particular relates to a method and system for calculating the induced geoelectric field taking into account the coastal effect. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] The geomagnetic disturbance (Geomagnetic Disturbance, GMD) caused by the solar eruption will induce the induced geoelectric field in the conductive medium such as the earth and the ocean, thereby generating a geomagnetically induced current (Geomagnetically Induced Current, GIC) in the loop formed by the power grid and the earth, threatening the electric power. Safe and stable operation of transformers and power grids. [0004] In northern Europe, North America and other high-latitude regions, due to the dramatic changes in the geomagnetic field, there have bee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06T17/20
CPCG06F30/23G06T17/20
Inventor 王艳玲初泓旭周晓峰
Owner SHANDONG UNIV
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