A Comprehensive Weight-Based Severity Evaluation Method of Voltage Sag in Distribution Networks

With the increasing use of sensitive loads in frequency converters and relays distribution networks, voltage sag has become a major power quality issue that urgently needs to be solved. For purpose improving understanding severity comprehensive weight-based evaluation method is presented this paper. First, multi-side index system takes into account combined influence source, network, load established. A weight method, which combines improved analytic hierarchy process (IAHP) entropy then adopted determine weight. The each degree superiority are linearly weighted obtain at different observation points. Finally, effectiveness proposed verified using network model established DIgSILENT PowerFactory (15.1.7, Gomaringen, Germany).