Unified power flow controller (UPFC): modeling and analysis

Keri, A.J.F.; Mehraban, A.S.; Lombard, X.; Eiriachy, A.; Edris, A.

doi:10.1109/61.754113

Cited by 119 publications

(34 citation statements)

References 4 publications

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“…Acceleration is weighted by a random term, with separate random numbers being generated for acceleration toward pbest and gbest. The position of the ith particle is then updated according to (2) [13,14]:…”

Section: A Overviewmentioning

confidence: 99%

“…7) Change the velocities according to (1). 8) Move each particle to the new position according to (2) and return to Step 2. 9) Repeat Step 2-8 until a stopping criterion is satisfied or the maximum number of iterations is reached.…”

Section: B Pso Algorithm [4]mentioning

confidence: 99%

“…Ali Ajami is with the electrical engineering department of Azarbaijan university of Tarbiat Moallem, Tabriz, Iran, phone: +98-914-3183362; fax: +98-412-4327548; e-mail: ajami@azaruniv.edu Mehdi Armaghan is M. Sc. student of electrical engineering department of Azarbaijan university of Tarbiat Moallem, Tabriz, Iran, e-mail: Mehdi_63.armaghan@yahoo.com three phase faults which may occur at the generator terminals [2]. In recent years, the fast progress in the field of power electronics had opened new opportunities for the application of the FACTS devices as one of the most effective ways to improve power system operation controllability and power transfer limits [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Application of Multi-Objective PSO Algorithm for Power System Stability Enhancement by Means of SSSC

Ajami¹

2010

IJCEE

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Abstract-In this paper, on the basis of the theoretical analysis of a single-machine infinite-bus (SMIB), using its modified linearized Phillips-Heffron model installed with SSSC, the potential of the SSSC supplementary controller to enhance the dynamic stability of a power system is evaluated by measuring the electromechanical controllability through singular value decomposition (SVD) analysis. This controller is tuned to simultaneously shift the undamped electromechanical modes to a prescribed zone in the s-plane. The problem of robustly SSSC based damping controller is formulated as an optimization problem according to the eigenvalue-based multi-objective function comprising the damping factor, and the damping ratio of the undamped electromechanical modes to be solved using particle swarm optimization technique (PSO) that has a strong ability to find the most optimistic results. To ensure the robustness of the proposed damping controller, the design process takes into account a wide range of operating conditions. The effectiveness of the proposed controller is demonstrated through controllability measure, eigenvalue analysis, nonlinear time-domain simulation and some performance indices studies. The results analysis reveals that the tuned PSO based SSSC controller using the proposed multi-objective function has an excellent capability in damping power system low frequency oscillations and enhance greatly the dynamic stability of the power systems.Index Terms-Power system dynamic stability, Power transmission control, particle swarm optimization, static synchronous series compensator.

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Section: A Overviewmentioning

confidence: 99%

Section: B Pso Algorithm [4]mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Application of Multi-Objective PSO Algorithm for Power System Stability Enhancement by Means of SSSC

Ajami¹

2010

IJCEE

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“…In recent years, the fast progress in the field of power electronics had opened new opportunities for the application of the FACTS devices as one of the most effective ways to improve power system operation controllability and power transfer limits [1,2]. Through the modulation of bus voltage, phase shift between buses, and transmission line reactance, FACTS devices can cause a substantial increase in power transfer limits during steady-state.…”

Section: Introductionmentioning

confidence: 99%

Output feedback UPFC controller design by using Quantum Particle Swarm Optimization

Jalilzadeh

Shayeghi

Safari

et al. 2009

2009 6th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolog

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In this paper, we design the optimal output feedback controllers for unified power flow controller (UPFC) in order to enhance the damping of power system low frequency oscillations. The selection of the output feedback gains for the UPFC controllers is converted to an optimization problem with the time domain-based objective function which is solved by a Quantum-behaved Particle Swarm Optimization technique (QPSO). The effectiveness of the proposed controller is demonstrated through nonlinear time-domain simulation and some performance indices studies of over a wide range of loading conditions. The results analysis reveals that the designed QPSO based UPFC controller has an excellent capability in damping power system low frequency oscillations in comparison with designed Classical PSO (CPSO) based UPFC controller and enhance greatly the dynamic stability of the power systems.

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“…However, the injected active power must be supplied by the dc link, in turn taken from the ac system through the shunt converter. When the losses of the converters and the associated transformers are neglected, the overall active power exchange between the UPFC and the ac system becomes zero [16]- [17]. …”

Section: Unified Power Flow Controller (Upfc)mentioning

confidence: 99%

Active and Reactive Power Flow Control using FACTS Devices

Murali¹,

Rajaram²

2010

IJCA

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Flexible alternating current transmission systems (FACTS) technology opens up new opportunities for controlling power and enhancing the usable capacity of present, as well as new and upgraded lines. The Unified Power Flow Controller (UPFC) is a second generation FACTS device which enables independent control of active and reactive power besides improving reliability and quality of the supply. This paper describes the real and reactive power flow control through a transmission line by placing the UPFC at the sending end of an electrical power transmission system. The power flow control performance of the UPFC is compared with that of the other FACTS device called Static Synchronous Series Compensator (SSSC). Simulations are carried out in Matlab/Simulink environment to validate the performance of the UPFC.

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Unified power flow controller (UPFC): modeling and analysis

Cited by 119 publications

References 4 publications

Application of Multi-Objective PSO Algorithm for Power System Stability Enhancement by Means of SSSC

Application of Multi-Objective PSO Algorithm for Power System Stability Enhancement by Means of SSSC

Output feedback UPFC controller design by using Quantum Particle Swarm Optimization

Active and Reactive Power Flow Control using FACTS Devices

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