A novel bus-type extended Continuation Power Flow considering remote voltage control

PV, PQ and Vθ are the conventional bus types for Continuation Power Flow (CPF) model. While calculating the voltage stability margins of power systems with remote voltage control, new bus types must be introduced, like PQV and P. Therefore, a bus-type extended continuation power flow (ECPF) model is proposed in this paper. It is utilized to compute the voltage stability critical point and identify the type of bifurcation with different remote voltage control modes such as one-to-one and multi-to-one. The double switching logic of the new bus types is also given to handle the reactive power limits of generators. Numerical simulations are conducted in IEEE 39-bus test system. The results show that the proposed model is effective in representing the characteristics of remote voltage control. It can be adopted to compute the voltage stability critical point and identify the type of bifurcation considering remote voltage control.