Fitting algorithm for power tower grounding resistance with vertical layered soil model

Author

Ying Huang ; Bo Tang ; Zihang Qu ; Bin Chen

Author_Institution

Coll. of Electr. Eng. & New Energy, Three Gorges Univ., Yichang, China

fYear

2014

fDate

11-18 Oct. 2014

Firstpage

676

Lastpage

680

Abstract

The accurate algorithm, which is used in the calculation of tower grounding resistance of power line in vertical layered soil, is difficult for normal engineering personnel to handle. Based on Green function, the resistance of typical tower grounding device is calculated. Therefore, the fitting function, which represents the relationship between resistivity of vertical layered soil and resistance values of grounding device, is deduced with the hyperbolic function as a fitting function using the least squares curve fitting methods. At last, the fitting formula of tower grounding resistance with the vertical layered soil model is acquired. According to the precision analysis, it is found that the accuracy of proposed formula is related with the initial value, but its maximum error does not exceed 10%.

Keywords

Green´s function methods; curve fitting; earthing; hyperbolic equations; least squares approximations; poles and towers; power cables; Green function; fitting algorithm; hyperbolic function; least squares curve fitting methods; power line; power tower grounding resistance calculation; vertical layered soil model; Accuracy; Current measurement; Fitting; Power transmission lines; Resistance; Soil; Transmission line measurements; Green Function; least squares fitting methods; power transmission line; regulation calculation method; tower grounding resistance; vertical layered soil;

fLanguage

English

Publisher

ieee

Conference_Titel

Lightning Protection (ICLP), 2014 International Conference o

Conference_Location

Shanghai

Type

conf

DOI

10.1109/ICLP.2014.6973209

Filename

6973209