THE EXPERIMENTAL VALIDATION OF THE GROUNDING DEVICE RESISTANCE MEASUREMENT METHOD

• Main Authors: Nizhevskyi, I. V., Nizhevskyi, V. I., Bondarenko, V. E.
• Format: Article
• Language: English; Russian
• Published: National Technical University "Kharkiv Polytechnic Institute" and State Institution “Institute of Technical Problems of Magnetism of the National Academy of Sciences of Ukraine” 2016
• Subjects: experimental research; grounding device; the resistance measurement method; three-electrode unit; the method of physical modeling; experimental validation; 621.316.99; экспериментальные исследования; заземляющее устройство; метод измерения сопротивления; трехэлектродная установка; метод физического моделирования; экспериментальное обоснование; експериментальні дослідження; заземлюючий пристрій; метод вимірювання опору; трьохелектродна установка; метод фізичного моделювання; експериментальне обґрунтування
• Online Access: http://eie.khpi.edu.ua/article/view/2074-272X.2016.6.10

Purpose. The paper considers experimental research of three-electrode units for measuring the resistance of grounding devices for different purposes. Methodology. The experimental study of the method of resistance measurement of grounding devices for any design in any soil structure using the method of physical modeling is presented. Results. By results of model operation the set of equations of the sixth order is solved. It allowed to determine the own and mutual impedance in the three-electrode unit with high accuracy without searching the point of zero potential. Features of measuring and defining the own and relative resistances of various combinations of electrodes for three-electrode measuring unit are considered. Originality. The necessity of finding a zero potential point is excluded. Practical value. The proposed method provides the smallest possible spacing of potential electrodes outside the grounding devices. This reduces the wiring length measurement circuit in several times, increases the ratio «signal – noise», removes the restrictions on building of the territory outside the test grounding device.