A New Comparison of D-FACTS Performance on Global Voltage Sag Compensation in Distribution System

摘要

A novel comparative assessment of D-FACTS (DVR and D-Statcom) mitigating global voltage sag in distribution systems is introduced. The performances of D-FACTS devices are compared basing on the problem of optimization where their locations are optimally selected on minimizing the system average rms frequency index (SARFI_x). In this problem of optimization, the effectiveness of global voltage sag compensation by DVR and D-Statcom is modeled in the problem of short-circuit calculation by using Thevenin's superimposition and suitable models of DVR and D-Statcom. The paper uses the IEEE 33-buses test distribution system for voltage sag simulation and influential parameters in the problem of optimization are discussed for better comparisons.