Abstract
ABSTRACTDue to the large number of uncertainties in operation and planning of power system, it is appropriate to analyse the transient stability assessment as a stochastic problem. This paper presents the probabilistic approach to determine the optimal location of thyristor-controlled phase shifting transformer (TCPST) for enhancing the transient stability of power system. TCPSTs are the cost-effective means to ensure reliable and efficient power flow control in overloaded transmission lines. This feature leads to reduction of the rotor angle separation of synchronous generators during disturbance occurrence which improves transient stability of the system. To select the optimal location of the TCPSTs, the analysis of angular separation of rotors of generators is calculated by considering the probabilistic factors. The Western-System-Coordinating-Council (WSCC) 9-bus and Institute of Electrical and Electronics Engineers (IEEE) New-England 39 bus test systems were used to demonstrate the feasibility and applicability of the presented method.
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