Abstract
This paper reports on an investigation of the impact of the addition of Distributed Flexible AC Transmission System (D-FACTS) devices on specific transmission lines to reduce line loading and eliminate potential bottlenecks under contingency conditions as a study for a utility. The D-FACTS devices potentially have reduced costs compared to reconductoring an existing line or installing a new line. The main objective of this paper is to study the effect of installing a limited number of these devices on selecting lines to improve system performance under N-1 contingency, N-2 contingency and N-1 contingency at conditions occurring on a neighboring system. The lines are modeled appropriately with existing data from this utility which is a part of WECC. Then D-FACTS devices are integrated with line models for appropriate simulation studies to identify appropriate degrees of compensation and the impacts on system performance. Finally, analysis of these results will be used to develop a practical implementation plan for general use of these D-FACTS devices.
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