Three-Phase Step Voltage Regulator Model for the Z-Bus Power Flow
preprintposted on 07.07.2020, 12:16 by Evangelos Pompodakis
This letter presents a comprehensive Step Voltage Regulator (SVR) model suitable for the three-phase ZBUS power flow. The model can be applied in all SVR configurations such as open delta, close delta, wye. Its advantage is that the tap variations are simulated outside the YBUS matrix, without compromising the convergence of the power flow. Therefore, a refactorization of the YBUS matrix is not required after every tap change reducing significantly the computation time of the power flow. The proposed SVR model is validated in a 4-Bus network, while its performance is tested in the IEEE 8500-Node test feeder.