Determination the Electrical Potential of a Created Grounding Device in a Three-Layer Ground

Abstract

The work is devoted to the definition of analytical expressions for the electric field potential created by a system of grounding devices of arbitrary configuration taking into account a three-layer geoelectrical structure. The potential is determined on the basis of the solution of the problem of the potential of a point source of current, taking into account the linear distribution of the current along the length of the electrode, and also the method of analogy between the electrostatic field and the field created by a quasi-constant current source. The total potential of the grounding system is determined using the superposition principle of the fields. Analytic

Simulation of electromagnetic processes in the grounding system with a short circuit in the operating high-voltage substation

“…Literature analysis. Several works [4][5][6][7][8][9][10][11][12] are devoted to the issues of modeling electromagnetic processes that occur in the GS during the flow of emergency currents. In most cases, a mathematical model of the GS located in two-layer soil is used (in particular, with the help of [7], more than 1000 power facilities of Ukraine with voltage classes of 35-750 kV were calculated, and the software package [9,10] based on it is one of the most commercial versions popular in the world).…”

“…The method of integro-differential equations is based on the analytical solution of the problem of the electric field potential of a point current source [6,7,[9][10][11][12][13]. Programs based on this method with a two-layer electric soil structure are used to carry out calculations by the world's leading scientific research institutions and following the international standards IEEE Std.…”

Analysis of Methods for Monitoring of Existing Energy Objects Grounding Devices State at the Present Stage

“…3) calculation method [5][6][7][8][9]. Measurement according to the given methods is carried out by the method of an ammeter-voltmeter, while two circuits of arrangement of electrodes [2] are used -one and two-beam (see Fig.…”

“…), the most universal and precise method of determination becomes calculations using special software complexes. A series of papers [5][6][7][8][9] is devoted to the simulation of electromagnetic processes that occur in the GD during the occurrence of emergency currents. In most cases, the mathematical model of the GD located in a two-layer soil is used, in particular, using the analogous model [8] the authors have calculated more than 1000 energy facilities of Ukraine of the voltage classes 35-750 kV, and the software complex used in [5] is one from the world's most popular commercial versions.…”

“…In carrying out calculations in the second stage, the mathematical model of non-equipotential GD, located in a three-layered conducting soil with plane-parallel separation boundaries developed by the authors [9] is used. In order to determine the input soil parameters, the means of interpretation of the vertical electrical sounding and ground equivalence curves are used.…”