Estimation method of geoelectric parameter structure considering complex frequency domain

Abstract

A method for estimating the structure of geoelectric parameters in the complex frequency domain, belonging to the field of power system grounding technology, mainly includes a frequency signal generator, a voltage signal acquisition and recording device, a probe copper electrode, a push rod motor, and a slider; the frequency signal generator The two ports of the module are connected to the copper electrodes of the two outer probes through wires, the two ports of the voltage signal acquisition and recording module are connected to the copper electrodes of the two inner probes through wires, the horizontal insulating flat bar is connected to the slider, and the slider is connected to the push rod motor. The rod motor is connected with the copper electrode of the probe, which is used to obtain the measured value of the apparent electric parameters of the earth under different electrode spans; it also includes the survey line division structure of the earth to be measured, which is used to test the unknown earth structure. The invention can effectively calculate the analytical value of the geoelectric parameters in the frequency domain, and can effectively comprehensively determine the structure of the electrical parameters of the complex earth at different frequency points, so as to achieve the purpose of providing theoretical guidance for the design and laying of the smart grid grounding system.

Description

technical field [0001] The invention belongs to the technical field of power system grounding analysis, and in particular relates to a method for estimating the structure of geoelectric parameters in consideration of complex frequency domains. Background technique [0002] The stable operation of the power system is an important prerequisite for ensuring people's living standards and quality. Power grounding technology is an important branch in the field of electrical engineering. It provides a reference for electrical systems and electronic equipment, ensuring the safety of human and animal life. Reduce damage to equipment. [0003] In electrical grounding engineering, it is very important to know the law of current distribution in the ground. The distribution law of the ground current is related to the frequency of the current, and the corresponding penetration depth of the current in the complex earth medium is also different. When designing and installing the grounding s...

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Problems solved by technology

At present, relevant researches at home and abroad mainly focus on the measurement and estimation of the signal without frequency variation, the inversion of the electric parameter structure of the simple homogeneous medium, etc., but there is a lack of research on the collaborative evaluation method for different types of complex frequency-domain ground structure screening.

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