Conferences related to Earth Resistivity

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2021 IEEE Pulsed Power Conference (PPC)

The Pulsed Power Conference is held on a biannual basis and serves as the principal forum forthe exchange of information on pulsed power technology and engineering.


2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)

ISIE focuses on advancements in knowledge, new methods, and technologies relevant to industrial electronics, along with their applications and future developments.


2020 IEEE Industry Applications Society Annual Meeting

The Annual Meeting is a gathering of experts who work and conduct research in the industrial applications of electrical systems.


2020 IEEE International Magnetic Conference (INTERMAG)

INTERMAG is the premier conference on all aspects of applied magnetism and provides a range of oral and poster presentations, invited talks and symposia, a tutorial session, and exhibits reviewing the latest developments in magnetism.


2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)

This symposium pertains to the field of electromagnetic compatibility.


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Periodicals related to Earth Resistivity

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Antennas and Propagation, IEEE Transactions on

Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.


Applied Superconductivity, IEEE Transactions on

Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission


Communications, IEEE Transactions on

Telephone, telegraphy, facsimile, and point-to-point television, by electromagnetic propagation, including radio; wire; aerial, underground, coaxial, and submarine cables; waveguides, communication satellites, and lasers; in marine, aeronautical, space and fixed station services; repeaters, radio relaying, signal storage, and regeneration; telecommunication error detection and correction; multiplexing and carrier techniques; communication switching systems; data communications; and communication theory. In addition to the above, ...


Dielectrics and Electrical Insulation, IEEE Transactions on

Electrical insulation common to the design and construction of components and equipment for use in electric and electronic circuits and distribution systems at all frequencies.


Electromagnetic Compatibility, IEEE Transactions on

EMC standards; measurement technology; undesired sources; cable/grounding; filters/shielding; equipment EMC; systems EMC; antennas and propagation; spectrum utilization; electromagnetic pulses; lightning; radiation hazards; and Walsh functions


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Most published Xplore authors for Earth Resistivity

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Xplore Articles related to Earth Resistivity

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Estimation of Earth Resistivity Based on Multispectral Image Classification

IEEE Transactions on Power Delivery, 2011

This paper presents a method to estimate earth resistivity using satellite image techniques. Since some useful satellite image resources can be accessible with reasonable expense, their applications of various engineering fields have been released. To demonstrate the application of estimating earth resistivity, high-resolution multi-spectral images of band 7, 5 and 3 acquired from LANDSAT ETM were used. The test area ...


IEEE Draft Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System

IEEE P81/D10, March, 2012, 2012

Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations; measuring earth resistivity; measuring the power system frequency resistance or impedance of the ground system to remote earth; measuring the transient or surge impedance of the ground system to remote earth; measuring step and touch voltages; verifying the integrity of ...


IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System

IEEE P81/D11, August 2012, 2012

Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations, measuring earth resistivity, measuring the power system frequency resistance or impedance of the ground system to remote earth, measuring the transient or surge impedance of the ground system to remote earth, measuring step and touch voltages, verifying the integrity of ...


IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System - Redline

IEEE Std 81-2012 (Revision of IEEE Std 81-1983) - Redline, 2012

Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations, measuring earth resistivity, measuring the power system frequency resistance or impedance of the ground system to remote earth, measuring the transient or surge impedance of the ground system to remote earth, measuring step and touch voltages, verifying the integrity of ...


The Research on New Type of Earth Resistivity Exploring Method for HVDC Deep-well Earth Electrode

2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE), 2018

The new method and inversion was proposed which include Induced Polarization (IP) and Controlled Source Audio Magnetotelluric (CSAMT) methods to explore the resistivity distribution of the HVDC Deep-well electrode. Through an engineering example, the results show that it can covering the ground depth of 0-10Km. And compared with commercial software CDGES and winIPI2, the root mean square (RMS) error is ...


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Educational Resources on Earth Resistivity

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IEEE-USA E-Books

  • Estimation of Earth Resistivity Based on Multispectral Image Classification

    This paper presents a method to estimate earth resistivity using satellite image techniques. Since some useful satellite image resources can be accessible with reasonable expense, their applications of various engineering fields have been released. To demonstrate the application of estimating earth resistivity, high-resolution multi-spectral images of band 7, 5 and 3 acquired from LANDSAT ETM were used. The test area of 50 km<sup>2</sup> was selected. Maximum likelihood, one of multispectral supervised classification techniques, was employed to classify multispectral data over the entire test area. With earth resistivity measurement of some selected locations, an earth resistivity map can be generated.

  • IEEE Draft Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System

    Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations; measuring earth resistivity; measuring the power system frequency resistance or impedance of the ground system to remote earth; measuring the transient or surge impedance of the ground system to remote earth; measuring step and touch voltages; verifying the integrity of the grounding system; reviewing common methods for performing ground testing; reviewing instrumentation characteristics and limitations; and reviewing various factors that can distort test measurements.

  • IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System

    Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations, measuring earth resistivity, measuring the power system frequency resistance or impedance of the ground system to remote earth, measuring the transient or surge impedance of the ground system to remote earth, measuring step and touch voltages, verifying the integrity of the grounding system, reviewing common methods for performing ground testing, reviewing instrumentation characteristics and limitations, and reviewing various factors that can distort test measurements.

  • IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth Surface Potentials of a Grounding System - Redline

    Practical test methods and techniques are presented for measuring the electrical characteristics of grounding systems. Topics addressed include safety considerations, measuring earth resistivity, measuring the power system frequency resistance or impedance of the ground system to remote earth, measuring the transient or surge impedance of the ground system to remote earth, measuring step and touch voltages, verifying the integrity of the grounding system, reviewing common methods for performing ground testing, reviewing instrumentation characteristics and limitations, and reviewing various factors that can distort test measurements.

  • The Research on New Type of Earth Resistivity Exploring Method for HVDC Deep-well Earth Electrode

    The new method and inversion was proposed which include Induced Polarization (IP) and Controlled Source Audio Magnetotelluric (CSAMT) methods to explore the resistivity distribution of the HVDC Deep-well electrode. Through an engineering example, the results show that it can covering the ground depth of 0-10Km. And compared with commercial software CDGES and winIPI2, the root mean square (RMS) error is very small. It is proved that the differential evolution inversion (DE) mentioned in this paper has high inversion accuracy.

  • Influence of Deep Earth Resistivity on HVDC Ground-Return Currents Distribution

    During monopolar operation or commissioning of high-voltage direct-current (HVdc) links, ground-return current (GRC) leads to power transformer dc bias issues. A GRC model is proposed in this paper, and the penetration depth, penetration ratio, and earth surface potential of various earth models are simulated. The result indicates that the influence of deep earth resistivity increases rapidly by the increasing distance from substations to HVdc electrodes. The simulation results are compared with measured data of GRCs distribution in the Hubei power grid of China. The result demonstrates that the simulation considering deep earth resistivity is credible and the shallow earth model could lead to poor accuracy. Furthermore, earth resistivity measurements are carried out at different geological regions and the deep earth characteristics and the GRCs distribution are quite different. Thus, it can be concluded that to calculate GRCs distribution using uniform earth structure without measurement is not appropriate. Finally, the relationship between accurately measured earth depth and the accuracy ratio of GRCs calculation is analyzed. The result of this paper contributes to determine the depth of earth model in GRCs simulation modeling and earth resistivity measurements.

  • Detection technology of high resolution earth resistivity applied for the exploration of gobs under expressways

    Gob represents poor engineering geology for expressway construction in mine areas, especially that small coal mines and old mines are mostly mined earlier privately or collectively without complete geological or mining data, therefore, seeking highly accurate, economical and practical gob detection technology to identify in detail the actual situation of gobs under expressways and provide high-quality exploration results will be directly related to the quality and economic efficiency of expressway construction. Upon the analysis on current exploration and research of gobs under expressways, the author introduces an effective way to detect small coal mine gobs under expressways — detection technology of high resolution earth resistivity. And the technology has been applied for exploring gobs under an expressway. Drilling verification shows that the exploration results are reliable, accurate, and had played an important role in guiding gob control, design and construction.

  • Earth surface potential induced by ground-return current of HVDC links — Part I: Measurement and estimation of the earth resistivity

    During the commissioning stage or pole outage of high-voltage direct current (HVDC) links, ground-return currents (GRCs) are injected into dc grounding electrodes. Therefore, earth surface potential (ESP) is induced by GRC. Moreover, nonuniform distribution of ESP in wide areas usually leads to half- cycle saturation of power transformers and interference of metallic underground infrastructures, especially pipelines and cables in long distance. As GRCs flow into the earth by dc grounding electrodes, ESP is determined by the resistivity of the earth. However, the heterogeneity of the earth brings difficulty in simulating ESP. In this paper, measurement and estimation of the earth resistivity is studied in detail. First, measurement technique for earth resistivity is introduced, including both the four-point method (FPM) and the magnetotelluric method (MT). A group of apparent resistivity can be obtained by changing the interval of FPM, which indicates the shallow earth resistivity. By using MT, another group of apparent resistivity representing the deep earth is scanned by tuning the receiving frequency. Second, both FPM and MT are proposed to measure the earth resistivity of wide areas. Measurement data of both methods are used as raw data for earth parameter estimation (EPE). EPE is an optimal problem of finding a good enough earth model to interpret the measured data. Third, this paper introduces an overall objective function (OOF) for EPE. The horizontal layered soil (HLS) is chosen as the ideal earth type. Then based on this assumption, HOF is set to a linear combination of the objective functions of FPM and MT. Finally, a hybrid optimization method named Levenberg-Marquardt based artificial bee colony (LMABC) algorithm is presented to minimize OOF. Other optimization method such as genetic algorithm (GA), Levenberg-Marquardt (LM), and artificial bee colony (ABC) are also used to compare the performance of EPE. Results shown that LMABC is the most sophisticated method of EPE, which is capable of interpreting the measured data of FPM and MT precisely. This paper helps converting the field-test data into an HLS model, which enable the computation of ESP of wide areas. The numerical analysis of ESP and its applications will be introduced in the second part of this paper.

  • Relations of the Thunder-Stroke Selectivity and Earth Resistivity

    The characteristics of thunder-rain cloud have been introduced after learning the lightning. Two factors of cloud-terra discharge have been analyzed. According to the model which is model of the cloud-terra capacitor simulating as parallel plate capacitor, based on the thunder electric current double index model and the Heidler model that was recommended by the International Electrician Commission in IEC1312-1 in 1995, the quantitative relations of the earth resistivity and first cloud-terra discharge lightning current amplitude value was reduced. There is a conclusion which the earth resistivity and first cloud-terra discharge lightning current amplitude value magnitude become the decreasing function relations. And the thunder-stroke selectivity has been investigated. It has provided the important reference to construct each kind of building and defense the lightning.

  • Earth resistivity and geological structure

    N connection with inductive coordination problems it is frequently necessary to estimate low-frequency ground-return mutual impedances between power and communication lines. The distribution of currents in the earth is a major factor in the determination of these impedances. This distribution is controlled by the resistivities of the component parts of the earth's crust and the arrangement of these parts. In impedance formulas that are customarily used the effect of the earth is taken care of by the inclusion of a single parameter — the earth resistivity. For a homogeneous earth this would be the actual resistivity of the material composing it. But the crust is nowhere homogeneous; hence, the resistivity used in such formulas is always of the nature of an average of the resistivities of the several parts of the crust — it is termed the effective earth resistivity.




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