Abstract

With the widespread and active consideration of installation of flexible AC transmission systems (FACTS) controllers for better controllability in a power grid, appropriate placement of these devices is becoming increasingly important. Improperly placed FACTS controllers fail to give the optimum performance and, in some cases, can even be counterproductive. As FACTS controllers are expected to maintain stability and security margin in a system for high power transfer level, proper placement strategies of these devices must be examined from different stability considerations; i.e., voltage stability, small signal stability, and transient stability. In this paper, a strategy for placement of shunt compensators has been proposed based on a combined consideration of voltage stability and small signal stability for a moderately large multimachine power system. The results are also validated with the help of electromagnetic transient simulation.

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