Optimally Selecting The Location Of A Multiple Of D-STATCOMs For The Improvement Of SARFIX Due To Faults In The IEEE 33-Bus Distribution System

The paper introduces a new method for optimizing the placement of a multiple of D-Statcoms for voltage sag mitigation in distribution systems. The D-Statcom’s placement is optimally selected not only for improving system voltage sag caused by a single fault event but also for all possible fault events in the system of interest. Therefore, D-Statcom’s placement is optimized in a problem of optimization where the objective function is to minimize the system voltage sag index – SARFIx. D-Statcom’s effectiveness for voltage sag mitigation is modeled basing on the method of Thevenin’s superimposition for the problem of short-circuit calculation in distribution systems. The paper considers the case of using a multiple of D-Statcoms with a proposed voltage compensating principle that can be practical for large-size distribution systems. The paper uses the IEEE 33-buses distribution feeder as the test system for voltage sag simulation and influential parameters to the outcomes of the problem of optimization are considered and discussed.

This is the peer reviewed version of the following article: Khanh, B.Q. and Hojo, M. (2019), Optimally selecting the location of a multiple of D‐statcoms for the improvement of SARFIX due to faults in the IEEE 33‐bus distribution system. IEEJ Trans Elec Electron Eng, 14: 1172-1180., which has been published in final form at https://doi.org/10.1002/tee.22915. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.