Exact and efficient approach in static assessment of Available Transfer Capability (ATC)

This paper suggests an exact approach to deal with static assessment of Available Transfer Capability (ATC). It caters an expanded Newton Raphson-seydel (NRS) to see the problem from different point of view. Conventional Newton Raphson (NR) method has the singularity problem over its Jacobian matrix and thus could fail to get the solution. Continuation Power Flow (CPF) method is a very powerful method that can get the solution without having the singularity problem. The CPF method is improved here using the new CPF-GMRES method. NRS commonly recognize as an old method but it is fast and accurate. All in all, the expanded NRS method is reliable and faster than CPF-GMRES and even NRS. The proposed approach is demonstrated on practical 350 bus network in IRAN (Khorasan region).