Abstract
Thyristor controlled series capacitors (TCSC) damping controller is considered as a useful device to improve the stability of transmission power systems. Seeking the optimal placement of TCSC controller has become a critical issue for the power system stability. From the working point of view, the TCSC controller is used to improve the voltage magnitude, reactive power and oscillation damping of power systems. The effectiveness of the location of TCSC controller, particularly in the damping of power oscillations depends on its location and input signals in the power system during time of grid fault. In this paper, an energetic method based on controllability and observability Gramians in continuous-time is proposed to determine the optimal location of TCSC. The effectiveness of the proposed method has been verified on the 39-bus New England power system.
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