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Magnetic storm induction geoelectric field calculation method and device considering coast effect

A calculation method and technology of geoelectric field, which can be used in measurement devices, re-radiation of sound waves, and electric/magnetic exploration. It can solve the problems of complex calculation process and achieve the effect of improving calculation efficiency and improving calculation efficiency.

Pending Publication Date: 2022-01-11
TSINGHUA UNIV
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Problems solved by technology

[0006] For this reason, the first purpose of this application is to propose a calculation method for the magnetic storm induced geoelectric field considering the coastal effect, to solve the technical problem that the calculation process of the magnetic storm induced geoelectric field considering the coastal effect is relatively complicated at present

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  • Magnetic storm induction geoelectric field calculation method and device considering coast effect
  • Magnetic storm induction geoelectric field calculation method and device considering coast effect
  • Magnetic storm induction geoelectric field calculation method and device considering coast effect

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Embodiment 1

[0069] figure 1 It is a flow chart of a method for calculating the geoelectric field induced by a magnetic storm considering the coastal effect provided by the embodiment of the present application.

[0070] Such as figure 1 As shown, a method for calculating the geoelectric field induced by a magnetic storm considering the coastal effect provided in the embodiment of the present application includes the following steps:

[0071] Step 110, determine the earth conductivity model and collect the original magnetic storm data, and determine the base value of the geoelectric field according to the earth conductivity model and the original magnetic storm data;

[0072] Step 120, determining the transmission line characteristic parameters of the earth conductivity model, based on the earth conductivity model, determining the negative potential gradient of the distortion electric field according to the base value of the earth electric field and the characteristic parameters of the tr...

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Abstract

The invention relates to the technical field of magnetic storm induction geoelectric fields, and particularly relates to a magnetic storm induction geoelectric field calculation method and device considering a coast effect. The magnetic storm induction geoelectric field calculation method considering the coast effect comprises the steps that a geoelectric conductivity model is determined, original magnetic storm data is collected, and a geoelectric field base value is determined according to the geoelectric conductivity model and the original magnetic storm data; transmission line characteristic parameters of the geoelectric conductivity model are determined, and the distortion electric field negative potential gradient is determined according to the earth electric field base value and the transmission line characteristic parameters based on the geoelectric conductivity model; and the magnetic storm induction geoelectric field is determined according to the geoelectric field base value and the distortion electric field negative potential gradient. By adopting the scheme, the calculation efficiency is effectively improved by avoiding the use of a numerical solution, the distribution condition of the magnetic storm induction geoelectric field in the direction perpendicular to the sea-land boundary surface can be given, and meanwhile, the method can be used for evaluating the influence of the transverse conductivity change on the geoelectric field and the GIC in the long conductor during the magnetic storm period.

Description

technical field [0001] The present application relates to the technical field of geoelectric fields induced by magnetic storms, in particular to a calculation method and device for geoelectric fields induced by magnetic storms considering coastal effects. Background technique [0002] During a space weather event, the interaction between the solar wind and the Earth's magnetic field causes geomagnetic disturbances. According to Faraday's law of electromagnetic induction, the changing geomagnetic field will generate a geoelectric field, thereby inducing a current with a frequency of 0.0001-0.01Hz in the grounded conductor loop, called geomagnetic induction current (GIC). This quasi-DC flows in the ground-based system, which affects the normal operation of the system and makes the system face security threats. In the power system, GIC flows into the transformer through the neutral point of the transformer, which can make the transformer half-wave saturated, resulting in overh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38
CPCG01V3/38
Inventor 王璇张述铭
Owner TSINGHUA UNIV
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