EXPERIMENTAL STUDY OF CHARACTERISTICS OF NONLINEAR VOLTAGE LIMITERS
Keywords:
Overvoltages, overvoltage limitations, volt-ampere characteristic, dead zoneAbstract
The relevance of the stated topic of scientific research is determined by the importance of elements in distribution networks with a voltage range of 6-10 kV for energy-intensive enterprises in the context of their use in modern power supply systems, as well as the need for systematic study on ensuring protection for these networks against overvoltages. Currently, the most common and effective method to limit overvoltages in power grids is through the use of nonlinear surge protectors. Their protective action is due to highly non-linear volt-ampere characteristics of working elements, which provide a sharp decrease in resistance when overvoltages occur in the network, preventing further increase in voltage on equipment insulation. The aim of this scientific research work is to study OVL (overvoltage limiters) characteristics and investigate "dead zone" areas within OVLs. The results obtained from this scientific research indicate that studying OVL characteristics remains relevant. The results and conclusions drawn from this scientific research work have significant importance for developers and designers involved with electrical systems at industrial enterprises and cities.