Dynamic modeling and analysis of generalized unified power flow controller

• We proposed a dynamic harmonic domain (DHD) model for the generalized unified power flow controller (GUPFC).
• This model provides for a unified solution to analyze its transient and steady state responses to voltage disturbances.
• The model provides a direct means of calculating both steady state values and transient responses of the harmonics.
• The results help in the analysis of stability and resonance of the system and are useful in designing controls.
• The proposed methodology can be useful in validating FFT-based methods wherever applicable.

This paper presents a unified solution to compute power quality indices in the generalized unified power flow controller (GUPFC) during steady and transient conditions using a dynamic harmonic domain technique. This technique allows the user to analyze harmonics generated in the GUPFC more precisely than using time domain techniques. The derivation of a model is presented and then simulated in the presence of voltage disturbances to demonstrate its use in power quality assessment. The results of the proposed model are validated against time domain simulations.