Optimal Location and Parameter Setting of TCSC Under Fault Contingency.

Flexible AC transmission systems (FACTS) devices can play very important role in power system security enhancement. One of the most effective FACTS devices is the thyristor controlled series capacitor (TCSC) which can smoothly and rapidly change its apparent reactance according to the system requirements. In this paper it is initially introduced a new method to allocate the optimum installation place of one or more TCSCs. The target function to determine the TCSCs installing place is increasing voltage stability during fault contingency. After determining TCSCs optimum installation place, their success rate in buses voltage stabilization is studied by a new following index, voltage stability index, and it is presented that they can be greatly effective in voltage stability. TCSC installation effect on amount of load shedding reduction is also presented as a new subject to keep buses voltage stability. IEEE 14&30 bus power systems are selected as the studied systems and mentioned analysis are applied on this system. [ABSTRACT FROM AUTHOR]