Results 131 to 140 of about 311 (169)

A novel method of power flow analysis with unified power flow controller (UPFC)

2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077), 2002
This paper presents a novel method for power flow analysis with unified power flow controllers (UPFC). A UPFC power flow model has been proposed, in which the impacts of UPFC devices on the system are modeled as the equivalent loads. According to typical control objectives of UPFCs, several sets of calculation formulas for the equivalent loads are ...
null Hongbo Sun, D.C. Yu, null Chunlei Luo   +2 more
openaire   +1 more source

Research on locating and sizing method of unified power flow controller (UPFC)

IET Conference Proceedings, 2022
C. Ye, T. Xu, T. Wang, J. Zhang, P. Xi
exaly   +2 more sources

Damping of power system oscillations with unified power flow controller (UPFC)

IEE Proceedings - Generation, Transmission and Distribution, 2003
A comprehensive approach to the design of UPFC controllers (power-flow controller, DC-voltage regulator and damping controller) is presented. Studies reveal that damping is adversely affected by the incorporation of a DC-voltage regulator. Investigations were carried out to understand the relative effectiveness of modulation of the UPFC control signals
N. Tambey, M.L. Kothari
openaire   +1 more source

UPFC-unified power flow controller: theory, modeling, and applications

IEEE Transactions on Power Delivery, 1998
This 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

Research on dynamic characteristics of Unified Power Flow Controller (UPFC)

2011 4th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011
Based on the basic principle of Unified Power Flow Controller circuit, give a simple analysis about the principle of power flow control of UPFC, and a detailed simulation model of UPFC considering the charging dynamics of its DC link capacitor is provided.
Yan Zhi
exaly   +2 more sources

Control of a Multi-Pulse SVM Based Unified Power Flow Controller (UPFC)

2020 IEEE Region 10 Symposium (TENSYMP), 2020
This paper presents the implementation and control of Unified Power Flow Controller (UPFC) to control active and reactive power independently in a transmission line. It is basically consists of two voltage source converters one is Static Synchronous Compensator (STATCOM) and another is Static Synchronous Series Compensator (SSSC).
Muhammad Helal Uddin, Akramul Haque, Asif Mohammed Siddiqee   +2 more
openaire   +1 more source

Nonlinear power system damping control strategies for the unified power flow controller (UPFC)

PowerCon 2000. 2000 International Conference on Power System Technology. Proceedings (Cat. No.00EX409), 2002
In this paper, a nonlinear UPFC damping control strategy based on a combination of PI and fuzzy controllers is proposed to damp low frequency electromechanical power oscillations. The proposed control scheme coordinates the unique power flow control features in different control modes of a UPFC to allow the best damping effects to be achieved.
T.T. Ma, K.L. Lo
openaire   +1 more source

Modeling and transient simulation of Unified Power Flow Controllers (UPFC) in power system

2015 4th International Conference on Electrical Engineering (ICEE), 2015
With the growing demand of electricity, at times, it is not possible to erect new lines to face the situation. Flexible AC Transmission System (FACTS) uses the thyristor controlled devices and optimally utilizes the existing power network. FACTS devices play an important role in controlling the reactive and active power flow to the power network and ...
Touhami Abdelouahed, Zidi Sid Ahmed
openaire   +1 more source

Power system security improvement using the unified power flow controller (UPFC)

2006 IEEE Power India Conference, 2006
This 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, H.A. Shayanfar, A. Rabiee, J. Aghaie   +3 more
openaire   +1 more source

Stability Improvement in Power Systems Using Unified Power Flow Controller (UPFC)

Advanced Materials Research, 2013
Flexible 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, S. Suresh Kumar, Juvan Michael   +2 more
openaire   +1 more source