CAPACITIVE INFLUENCE OF HIGH VOLTAGE OVERHEAD TRANSMISSION LINES ON THE MEASUREMENT OF SOIL RESISTIVITY

Autor: T. Barić, H. Glavaš, L. Jozsa
Rok vydání: 2022
Předmět:
Zdroj: Journal of Energy : Energija
Volume 56
Issue 2
ISSN: 1849-0751
0013-7448
DOI: 10.37798/2007562354
Popis: U radu je prikazana analiza utjecaja visokonaponskih nadzemnih vodova na mjerenja specifičnog otpora tla. Analizom je određena razina smetnji pri mjerenju zbog blizine faznih vodiča visokonaponskog nadzemnog voda. Tlo je modelirano kao anizotropni homogeni poluprostor konačne otpornosti. Kako bi članak bio od koristi inženjerima u praksi, korišten je jednostavni matematički instrumentarij, s detaljno prikazanim izvodima i fizikalno objektivnim pretpostavkama pod kojima je navedeni model valjan. Radi jednostavnosti i općenitosti izlaganja analiza je provedena na praktičnom primjeru mjerenja specifičnog otpora tla Wennerovom metodom. Primjer se odnosi na jednosistemski VN dalekovod s čelično rešetkastim stupom tzv. jela. Dobiveni rezultati prikazanom teorijom uspoređeni su s rezultatima dobivenim profesionalnim programskim paketom CDEGS. Rrezultati su prikazani analitički i grafički te diskutirani.
In this article, an analysis is presented of the impact of high voltage overhead transmission lines on the measurement of soil resistivity. Through analysis, the measurement noise level due to the vicinity of the phase conductors of a high voltage overhead transmission line is determined. The soil is modeled as an anisotropic homogeneous half-space of finite resistivity. In order for the article to be of practical use to engineers, simple mathematical instrumentation has been used. Detailed expressions and the physically objective hypotheses under which the cited model is valid have been derived. For the simplicity and generality of the presentation, analysis was performed using a practical example of the measurement of soil resistivity by the Wenner method. The example refers to a single system high voltage transmission line with a steel tower. The results obtained by the theory presented are compared to the results obtained with the software package CDEGS (Current Distribution, Electromagnetic Fields, Grounding and Soil Structure Analysis). The results obtained are presented analytically, graphically and are discussed.
Databáze: OpenAIRE
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