Advanced unified power flow controller model for power system steady state control

In this paper, mathematical models for eleven new UPFC series control modes are presented. These include direct voltage injection, bus voltage regulation, line impedance compensation and phase angle regulation. Detailed implementation of the advanced UPFC model with twelve control modes (the basic active and reactive power flow control mode and the eleven new UPFC control modes) in power flow analysis is given. Numerical examples based on the IEEE 30 bus system and IEEE 118 bus system are given to show the feasibility of the advanced UPFC model and the computational performance of the Newton power flow algorithm.