Multiple UPFCs mathematical model enhancing multi-machine power system control

This paper provides a general dynamic mathematical model of Multiple Unified Power Flow Controllers (UPFC) development; those installed into any selected lines of a Multi-Machine power system network. The development will be based on two UPFCs installed into the New England Power System (NEPS) grid. This mathematical development applicable on any Multi-Machine network based on the required number of UPFCs to achieve power system control enhancement.