Abstract
Unified Power Flow Controller (UPFC) is versatile and one of the advanced FACTS devices. In this study, dynamic analysis of UPFC is realized by MATLAB-Simulink simulation. For this purpose, a simulation model is presented that enable to be analysed of effects of device to power system in detail. Simulation model is a based on shunt current injection and series voltage injection. UPFC system dynamic model is based on a d-q synchronous reference frame. Developed simulation model enables to be analyzed effects of UPFC and the other converter based FACTS devices (STATCOM, SSSC,IPFC) to power system very simply. Besides, it can be used for education purpose in graduate studies which is about converter based FACTS devices. On the other hand, it can be used for industrial purpose in terms of power system engineers’ investigations of effects of UPFC to power system. Simulated UPFC system consists of a load, UPFC and a power system with two machines. In simulation studies, functions of UPFC such as terminal voltage regulation and automatic power flow control is analysed and results are presented in case of graphics. Ill. 17, bibl. 18 (in English; abstracts in English and Lithuanian).DOI: http://dx.doi.org/10.5755/j01.eee.121.5.1662
Highlights
In AC power systems, for many years to overcome the reactive power problems mechanical switched groups of capacitors and reactors are used
This study presents a simulation program which can be used for investigation of effects of Unified Power Flow Controller (UPFC) and other converter based FACTS devices on power system
Analysis is about the investigation of capability of UPFC in voltage control and power flow control in power systems
Summary
In AC power systems, for many years to overcome the reactive power problems mechanical switched groups of capacitors and reactors are used. UPFC is the most versatile device among FACTS devices It provides the control of transmission system parameters such as voltage, phase angle and line impedance in power systems [1,2,3,4,5,6,7,8,9,10]. There have been many studies intended for mathematical modeling, impacts on power systems and control system design for UPFC. According to simulation results STATCOM is ensuring the displacement power factor compensation with good transient and steady state performance. This study presents a simulation program which can be used for investigation of effects of UPFC and other converter based FACTS devices on power system. Control of bus voltage and active power control with UPFC is performed by adding inductive and capacitive loads to the system
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