Development of the Theory of Vector Measurements Applied in Relay Protection and Automation

Vector representations and measurements have been used for many decades in the theory and practice of electrical engineering for testing electrical equipment, and the analysis and synthesis of relay protection, automation, and regulation devices. This article discusses various means of processing and visualization of experimental data obtained in the study of complex oscillatory systems and their models. The aim is to determine the most effective method of presenting transient information. The article demonstrates that representing oscillatory processes on a plane with the two systems of axes allows information on all the parameters of the oscillatory process to be taken into account. All presented means to visualize and analyze the composition of transient processes complement each other and offer their full characterization. This article demonstrates the practical applications of the investigated visualization methods.