Practical experience with the utilization of the IPSO optimization software on the belgian grid system

This paper relates the experience of use of the optimal power flow software IPSO (integrated power system optimizer) for solving problems related to the Belgian power system short term operation and planning. The optimization is performed using the KNITRO solver based on an interior point algorithm. After a short description of the main algorithm features, the paper focuses on the utilisation of OPF program to solve two main optimization problems typical of the operation of the Belgian grid system that is highly interconnected to the UCTE grid: a/ the evaluation of the steady state TTC (total transfer capability) which is a key component of the ATC (available transfer capability) provided to the market operators and the quantification of the TRM (transfer reliability margin) b/ the supervision of the tertiary voltage control (TVC) that implements the maximization of the units individual reactive power margin through the emulation of the highly customized linear programming algorithm implemented within the EMS software for operational or planning purposes