Application of MIQCP based SVC allocation method to a complex real-world grid

This paper demonstrates the applicability of a recently reported mixed integer quadratically constrained programming (MIQCP) placement algorithm on a large scale real-world power system, based on maximizing loadability. The MIQCP algorithm partially incorporates key quadratic constraints, which were absent in MILP placement methods reported in the past. A case study based on Powerlink Queensland's HV transmission network is presented, with the system containing 886 buses and 1087 branches. A comparison is presented between the MIQCP approach and the MILP approach, showing significant improvements in solution accuracy. Additionally, through verification by an exhaustive load flow search, MIQCP is shown to provide correct SVC placement in the 886 bus network. Finally, some observations are presented based on results involving multiple SVC placements in the network.