ВИЗНАЧЕННЯ НАПРЯМКУ РЕКОНСТРУКЦІЇ ЗАЗЕМЛЮВАЛЬНОГО ПРИСТРОЮ

Purpose. In paper the most efficient and economical way for bringing the grounding system of power facilities into compliance with requirements of normative parameters was determined. Methodology. The determination was based on the comparison of the calculated values of touch voltage and length of additional electrodes for reconstruction of grounding system by two ways. To calculate the software based on the method of point current source which located in the three-layer soil, method guidance potential, Gauss method and the method of ordinary least squares was used. Results. For three possible cases amount of material and labor costs for the reconstruction and modernization of the grounding system while maintaining the equipotent grounding system and allowable touch voltage was defined. Originality. For the first time the effectiveness the reconstruction of grounding system for requirements of touch voltage, not to her of resistance, both in terms of electrical safety and in terms of material and labor costs proved. Practical value. The implementation of results saves a national scale funds for modernization and reconstruction of existing grounding systems of power facilities.На основі розрахункових експериментів проаналізовано можливі випадки невідповідності заземлювальних пристроїв нормативним вимогам та способи їх реконструкції за вимогами до напруги дотику та опору. Визначено ефективність вказаних напрямків реконструкції як з точки зору електробезпеки, так і матеріально-трудових витрат