Electrical transients in industrial plants

Abstract

One of the greatest challenges of the 21st century is to protect our control, regulation and data storage units used in automated, robotic manufacturing from the consequences of power grid failures. However, for prevention it is essential to accurate identify the causes of these failures that often appear stochastically. Many times, it is difficult to detect even the fault phenomenon itself, since often it cannot be explained using classical approaches and only its consequences can be felt. In most cases, the cause of momentary, short-term outages is identified as a voltage failure in the internal electrical network of the electricity supplier or industrial installation, which can be a wrong conclusion. One possible cause of intangible voltage sags may be the presence of harmful power grid harmonics. In the paper using the relevant scientific literature practical experiences, network analysis results, as well as possible detection and prevention methods are presented with.