Horizontal Multilayer Soil Parameter Estimation Through Differential Evolution

Pereira, Will Roger; Soares, Matheus Garcia; Neto, Luciano Martins

doi:10.1109/tpwrd.2015.2475637

Cited by 40 publications

(31 citation statements)

References 17 publications

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“…In this part, the earth structure parameters are estimated by using the LMA minimization method and compared with the results in [9] and [10]. Three cases are considered in this part.…”

Section: B Comparison Of Soil Parameter Estimation Results Among Pubmentioning

confidence: 99%

“…The first one is using deterministic optimization algorithms, e.g., the Levenberg-Marquardt algorithm (LMA) [14], whose advantage is high efficiency, but it normally requires the accurate derivatives of the objective function to accelerate the convergence procedure. The other type is the non-deterministic optimization algorithms, such as the Artificial Neural Networks (ANN), Genetic Algorithms (GA) and Differential Evolution algorithm (DE) [10]- [13]. Generally speaking, the non-deterministic optimization algorithms can find the global optimal solution with the expense of much longer computational time and more difficult encoding work.…”

Section: Introductionmentioning

confidence: 99%

“…However, both of these approaches require to determine a large enough truncation value, which makes them inconvenient to be conducted. References [9] and [10] use the Complex Image Method (CIM) to simplify the expression. The CIM is a good candidate to calculate the apparent resistivity, and has been successfully applied in practice.…”

Section: Introductionmentioning

confidence: 99%

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Parameter Estimation of a Horizontally Multilayered Soil With a Fast Evaluation of the Apparent Resistivity and its Derivatives

Yang

Zou

2020

IEEE Access

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The information of earth structure is curial for designing the grounding system and evaluating the transmission line parameters. In order to obtain the earth structure using the measured data, an efficient algorithm for the parameter estimation of a horizontally multilayered soil by using a novel integration method is proposed. In the proposed algorithm, an adaptive iteration process will terminate till the predefined error reaches the requirement, where the earth parameters, such as the layer depth, layer resistivity, and layer number, are adjusted accordingly with the help of the Levenberg-Marquardt algorithm. In each iteration, the key is to evaluate the apparent resistivity and its partial derivatives with respect to soil parameters, which are expressed in the form of general Sommerfeld integral (GSI). In this paper, the GSI is divided into two parts. The first part with an infinite upper limit is integrated along a novel complex integration path instead of the conventional real axis path, which makes the evaluation of the GSI highly efficient due to the fast damping property of the transformed kernel. The second part with the finite integral interval is calculated using the cubic spline technique to have a semi-analytic expression, which can avoid evaluating the oscillatory kernel. In comparison with the results in the published literatures, numerical examples show that the proposed soil parameters estimation approach can reach good accuracy, and is robust and efficient. The reason is simple as the GSIs are calculated by using the well-designed and sophisticated approach. With extensive numerical experiments, the proposed algorithm is believed to be a capable and applicable candidate in engineering to invert the information of the earth structure.

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“…In this part, the earth structure parameters are estimated by using the LMA minimization method and compared with the results in [9] and [10]. Three cases are considered in this part.…”

Section: B Comparison Of Soil Parameter Estimation Results Among Pubmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Parameter Estimation of a Horizontally Multilayered Soil With a Fast Evaluation of the Apparent Resistivity and its Derivatives

Yang

Zou

2020

IEEE Access

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“…Otherwise, algorithms may fall into a local optimal solution. Recently, more and more global algorithms such as genetic algorithm, difference evolution algorithm, and neural networks approach have been applied into soil parameter inversion …”

Section: Introductionmentioning

confidence: 99%

The determination of frequency domain soil parameters of horizontally layered structure by using dipole‐dipole array

Li¹,

Rao²

2019

Int J Numerical Modelling

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A method to determine frequency domain soil parameters of horizontally layered structure is developed, including resistivity and permittivity. The theoretical formula of apparent resistivity of dipole-dipole array is derived from Green's function under quasi-static field condition. Complex image method is introduced to avoid time-consuming numerical integration in apparent resistivity calculation, which improves the computational efficiency significantly.The frequency domain soil parameters are optimized using simulated annealing algorithm at each frequency. This method is applied to invert synthetic data with noise and the inversion results validate the accuracy of this method.

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“…The related excavation and backfill will change the soil of the site surface, which is a key problem in areas with high soil resistivity or areas where nuclear power plant are constructed. In such cases, surface soil, unlike cases of traditional vertical or horizontal stratification, presents a heterogeneous soil structure [12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Effect of a Large Backfill Area on Grounding Grid Performance

Tao¹,

Wei²,

Li³

et al. 2018

Energies

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The construction of a substation will undoubtedly change the properties of any surrounding native soil. In order to study the influence of backfill material on grounding grid performance and in turn optimize that performance, current distribution, electromagnetic fields, ground, and soil structure analysis (CDEGS) was undertaken to simulate the secondary peak of the step voltage generated by a large backfill soil area. As for the various parameters of the finite soil volume, the influence of the soil length L, the edge gradient tan θ, and the resistivity ρ on the secondary peak of step voltage was researched. Then, a grounding test system was established, the selection process of the protection resistors was clarified, and the usage method of agar gel was improved. The feasibility of simulating backfill material with agar gel was verified, and the influence of resistivity and soil scale on the secondary peak of the step voltage was tested. The results show that the larger the backfill material length is, the larger the resistivity is, and the lower the peak voltage is. The effect of soil resistivity on the secondary peak will be greater when the range of backfill material is larger, which means that reducing soil resistivity can effectively reduce the secondary peak. Therefore, a smaller slope can be formed at the edge of the earthwork in the actual substation to reduce the project amount and save investment, which has a certain degree of engineering significance.

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Horizontal Multilayer Soil Parameter Estimation Through Differential Evolution

Cited by 40 publications

References 17 publications

Parameter Estimation of a Horizontally Multilayered Soil With a Fast Evaluation of the Apparent Resistivity and its Derivatives

Parameter Estimation of a Horizontally Multilayered Soil With a Fast Evaluation of the Apparent Resistivity and its Derivatives

The determination of frequency domain soil parameters of horizontally layered structure by using dipole‐dipole array

The Effect of a Large Backfill Area on Grounding Grid Performance

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