NOTATION A. Sets of indicesTotal number of buses Number of a possible installed capacitor bank Number of load level duration Number of generators Number of transmission lines Number of possible installed SVC devices Number of installed transformers Number of possible installed TCSC devices B. Constants and parameters Transmission line susceptance between bus i and bus j (p.u) The per-unit cost of the capacitor bank ($/MVAR) The fixed installation cost of capacitor bank in ($) Transmission line conductance between bus i and bus j (p.u) Per-unit energy cost ($/MWh) The interest rate for VAR devices (%) continued on the next page