Results 161 to 170 of about 2,466 (210)
Some of the next articles are maybe not open access.
Unified power flow controller (UPFC): modeling and analysis
IEEE Transactions on Power Delivery, 1999The unified power flow controller (UPFC) is a novel power transmission controller. The UPFC provides a full dynamic control of transmission parameters, voltage, line impedance and phase angle. This paper presents a useful tool for power utilities engineers to evaluate the application of the UPFC, its impact on their power system and what would be the ...
A.J.F. Keri +4 more
openaire +3 more sources
Unified power flow controller (UPFC) under nonlinear control
Proceedings of the Power Conversion Conference-Osaka 2002 (Cat. No.02TH8579), 2003The equations of the PWM voltage-source converter (PWM-VSC) are inherently nonlinear. This paper applies the nonlinear control, associated with A. Isidori, to the unified power flow controller (UPFC). Since the UPFC comprises two PWM-VSCs, this paper is one step further in complexity than the previous application of nonlinear control to the static ...
null Bin Lu, null Boon Teck Ooi
openaire +1 more source
Versatile control strategy of the unified power flow controller (UPFC)
2000 Canadian Conference on Electrical and Computer Engineering. Conference Proceedings. Navigating to a New Era (Cat. No.00TH8492), 2002The unified power flow controller (UPFC) is a third generation flexible AC transmission system (FACTS) that uses solid state electronics to control the flow of power through lines in a faster and more economical fashion. In this paper, we propose a versatile control strategy of the UPFC that joins shunt active filtering and system balancing ...
K. Sedraoui +3 more
openaire +1 more source
Power flow control and loss minimization with unified power flow controller (UPFC)
Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513), 2004In this paper, the UPFC injection model is used to investigate its effect on load flow and loss reduction in power systems. In this study, the Newton-Raphson algorithm is modified to consider the benefits of having a UPFC in the power system. Simulations have been implemented in MATLAB and the IEEE 14-bus system has been used as a case study ...
A. Farhangfar +2 more
openaire +1 more source
Modelling and Application of Unified Power Flow Controller (UPFC)
2010 3rd International Conference on Emerging Trends in Engineering and Technology, 2010The rapid developments on the area of power electronics have enabled the development of new equipments to be able to benefit more efficiently from the power systems. The equipments based on the power electronics have been improved under the name of Flexible Alternating Current Transmission Systems (FACTS) in the last years.
N K Sharma, P P Jagtap
openaire +1 more source
UPFC-unified power flow controller: theory, modeling, and applications
IEEE Transactions on Power Delivery, 1998This paper describes the theory and the modeling technique of a flexible alternating current transmission systems (FACTS) device, namely, unified power flow controller (UPFC) using an Electromagnetic Transients Program (EMTP) simulation package. The UPFC, in this paper, consists of two solid-state voltage source inverters which are connected through a ...
K.K. Sen, E.J. Stacey
openaire +1 more source
Application of Unified Power Flow Controller (UPFC) in Jiangsu power system
2017 IEEE Power & Energy Society General Meeting, 2017This paper presents applications of one operating 220 kV and the other constructing 500kV Unified Power Flow Controller (UPFC) projects in Jiangsu power system. The operating UPFC project in Nanjing Western Power Grid (NWPG) will be firstly introduced. Necessity and feasibility to utilise UPFC will be discussed.
Hui Cai +4 more
openaire +1 more source
Power system security improvement using the unified power flow controller (UPFC)
2006 IEEE Power India Conference, 2006This paper presents an algorithm to find the operating point of UPFCs for the enhancement of system security level. The proposed algorithm minimizes the security index iteratively. The security index indicates the overload level of transmission lines. The sensitivity indicating the change of the index due to the changes in the UPFC real power output is
A. Kazemi +3 more
openaire +1 more source
A new approach for the dynamic control of unified power flow controller (UPFC)
2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262), 2001This paper presents a new approach for the dynamic control of FACTS apparatus, such as the UPFC and the STATCOM. With the new control strategy, the capabilities of the UPFC can be exploited not only for steady state power flow control but also to improve damping and transient stability assuring a good behavior during contingencies and the protection of
K. Sedraoui, K. Al-haddad, G. Olivier
openaire +1 more source
Stability Improvement in Power Systems Using Unified Power Flow Controller (UPFC)
Advanced Materials Research, 2013Flexible AC transmission system (FACTS) is a system composed of static equipments used for ac transmission of electric energy to improve the power transfer capability and to enhance controllability of interconnected network. Unified Power Flow Controller (UPFC) is the most widely used FACTS device for providing fast acting reactive power compensation ...
B. Gopinath +2 more
openaire +1 more source