Potential usages of EDA techniques for PQ analysis in modern instrumentation systems

Abstract

The successive incorporation of distributed energy resources into the electrical network and the subsequent effect of non-linear loads have given rise to new types of electrical disturbances. Supply quality standards show their limitations if they are used as the only indicators, without the synergy of complementary tools that allow hybrid events to be detected. In this line, the contribution of new tools to visualize the state of the electrical network and to evaluate qualitatively and quantitatively the state of the network is situated. This paper reviews the state of the art in this context and, as a result, proposes a new tool for spatial visualization of supply quality based on a radar chart. Each of its vertices constitutes an index, among which indicators based on higher order statistics are included. Likewise, the non-linear combination of all the individual indices allows for a joint index, whose coefficients report the presence of a certain type of disturbance. Unlike other tools, the proposal focuses on monitoring the status of the network. The experimental results in a traditional socket allow establishing the behavior limits of the supply voltage for each indicator, allowing the user to establish their own zone of safe usability.