Title :
Comprehensive UPFC models for power flow calculations in practical power systems
Author :
Lee, Sheng-Huei ; Chia-Chi Chu ; Chang, Ding-Hsin
Author_Institution :
Dept. of Electr. Eng., Chang Gung Univ., Kwei-San, Taiwan
Abstract :
A hybrid unified power-flow controller (UPFCs) model for power flow calculations is developed: an ideal voltage source model is used to represent the series part while an ideal current source model is used to represent the shunt part. Static relationships among real power and reactive power transfers, series transformer and shunt transformer losses are considered in detail. Equivalent relationships among our new models and existing models are also investigated. Since only one extra state variable is included in our developed UPFC models, it can be easily incorporated into existing Newton-type power flow solvers. Even with flat start initial conditions, this new model can be easily converged within a few iterations. We have tested our new models in IEEE 300-bus power systems. Simulation results demonstrate the efficiency and the accuracy of our proposed model.
Keywords :
Newton-Raphson method; load flow control; losses; power system control; power transformers; reactive power; IEEE 300-bus power systems; Newton-Raphson method; Newton-type power flow solvers; UPFC model; flat start initial conditions; ideal voltage source model; power flow calculations; reactive power transfers; real power transfers; series part; series transformer losses; shunt part; shunt transformer losses; unified power-flow controller model; Equations; Hybrid power systems; Load flow; Load flow control; Power system modeling; Power system simulation; Reactive power; Reactive power control; System testing; Voltage control;
Conference_Titel :
Power Engineering Society Summer Meeting, 2001
Conference_Location :
Vancouver, BC, Canada
Print_ISBN :
0-7803-7173-9
DOI :
10.1109/PESS.2001.969977
