Modeling UPFC into multi-machine power systems
Document Type
Article
Publication Date
9-6-2012
Abstract
Modeling of unified power flow control (UPFC) into multi-machine power systems by Wang, published by IET, has been widely quoted by many researchers. However, the correctness of the derivation of its equations has not been strictly scrutinized. The model cannot properly represent power system networks in its current form and need to be corrected. In this paper, the model proposed by Wang is revisited and the equations re-derived obtaining different results. The corrected model was developed and tested on three-machine and New England power systems installed with a UPFC. The DC link capacitor voltage is controlled in UPFC by modulating the phase angle of the excitation transformer voltage. The effect of the controller in damping of the low-frequency oscillations is demonstrated by using the proposed correct model and the results are compared with model presented by Wang.
Keywords
Low-frequency oscillations, Phillips-Heffron model, UPFC
Divisions
fac_eng
Publication Title
Arabian Journal for Science and Engineering
Volume
37
Issue
6
Publisher
King Fahd University of Petroleum and Minerals.