Application of the direct Lyapunov method to improve damping of power swings by control of UPFC

Januszewski, M.; Machowski, J.; Białek, Janusz

doi:10.1049/ip-gtd:20040054

Cited by 53 publications

(41 citation statements)

References 11 publications

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“…Also, there are some studies relating to the functionality of the Lyapunov direct method for controlling UPFC with the aim of damping the system oscillations [10]. IPFC was introduced by Gyugyi in 1999 for the first time [11].…”

Section: Introductionmentioning

confidence: 99%

Designing an Emotional Intelligent Controller for IPFC to Improve the Transient Stability Based on Energy Function

Jafari¹,

Marjanian²,

Solaymani³

et al. 2013

Journal of Electrical Engineering and Technology

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-The controllability and stability of power systems can be increased by Flexible AC Transmission Devices (FACTs). One of the FACTs devices is Interline Power-Flow Controller (IPFC) by which the voltage stability, dynamic stability and transient stability of power systems can be improved. In the present paper, the convenient operation and control of IPFC for transient stability improvement are considered. Considering that the system's Lyapunov energy function is a relevant tool to study the stability affair. IPFC energy function optimization has been used in order to access the maximum of transient stability margin. In order to control IPFC, a Brain Emotional Learning Based Intelligent Controller (BELBIC) and PI controller have been used. The utilization of the new controller is based on the emotion-processing mechanism in the brain and is essentially an action selection, which is based on sensory inputs and emotional cues. This intelligent control is based on the limbic system of the mammalian brain. Simulation confirms the ability of BELBIC controller compared with conventional PI controller. The designing results have been studied by the simulation of a single-machine system with infinite bus (SMIB) and another standard 9-buses system (Anderson and Fouad, 1977).

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Section: Introductionmentioning

confidence: 99%

Designing an Emotional Intelligent Controller for IPFC to Improve the Transient Stability Based on Energy Function

Jafari¹,

Marjanian²,

Solaymani³

et al. 2013

Journal of Electrical Engineering and Technology

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“…This is usually accomplished through supplementary controls associated with these devices. Damping power system oscillations is one of the important applications of UPFCs [1]- [6]. Oscillations can occur in a system as a result of contingencies such as sudden load changes or power system faults.…”

Section: Introductionmentioning

confidence: 99%

Dynamic placement and signal selection for UPFCs in wide-area controlled power systems

Zarghami

Crow

2010

IEEE PES T&D 2010

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This paper deals with the problem of damping inter-area oscillations in wide-area bulk power systems using unified power flow controllers. Dynamic placement and signal selection are two important issues when FACTS devices are deployed in the system. In the paper both problems have been investigated using a Most Dominant Branches table calculated based on modal analysis which shows the influence of active powers of the branches on inter-area modes of the system. First, dynamic placement has been explained in which the best placement candidates are selected based on their influence on inter-area modes. Next the paper deals with dynamic estimation of the states of the system based on selected global measurements. Estimation of the states is important in centralized control approaches since global feedback is not fully available. Simulations on the IEEE 118 bus test system show that the proposed approaches give valuable guidelines for dynamic placement and signal selection problems. Although the results of the discussed methods have been explored using UPFCs, applications can be extended to other series connected FACTS devices.

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“…Larsen et al [2] have presented the design concepts and a systemic approach for the selection of input signals for FACTS damping controllers based on various damping controller design indices. The angular difference of two remote voltages on each side of TCSC is chosen as damping controller input Control strategies for damping of electromechanical power oscillations using an energy function method have been proposed by Gronquist et al in [3], Chaudhuri, B. Pal et al designed a multiple -input Single output (MISO) controller for TCSC to improve damping of critical inter area modes using global stabilizing signals [12]. J. Chen et al proposed an equivalent model to analyse the capabilities of series connected FACTS controllers to damp power system oscillations and developed a universal control strategy using fuzzy logic control based on a locally measurable signal to enhance power system damping [11].…”

Section: Introductionmentioning

confidence: 99%

Coordinated Control of SVS and CSC for Damping Power System Oscillations

Sharma¹

2010

ijeei

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Abstract:In this paper the effectiveness of Static Var System (SVS) auxiliary controller in coordination with controlled series compensation has been demonstrated for damping power oscillations for wide range of operating conditions. A new SVS auxiliary controller, known as the combined derivative of reactive power and derivative of computed internal voltage (CDRPDCIV) auxiliary controller has been developed and incorporated in the SVS control system located at the middle of a series compensated long transmission line to get most effective damping effect. The first IEEE benchmark model for analysis of torsional modes has been adopted. Eigen value analysis study is conducted for various levels of power transfer and series compensation. The results of eigen value analysis are validated by carrying out time domain analysis study based on non linear model. The proposed SVS auxiliary controller in coordination with CSC with its bang -bang form of control is very effective in damping power system oscillations over a wide operating range under large disturbance conditions thus enhancing the Transient performance of the power system.

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Application of the direct Lyapunov method to improve damping of power swings by control of UPFC

Cited by 53 publications

References 11 publications

Designing an Emotional Intelligent Controller for IPFC to Improve the Transient Stability Based on Energy Function

Designing an Emotional Intelligent Controller for IPFC to Improve the Transient Stability Based on Energy Function

Dynamic placement and signal selection for UPFCs in wide-area controlled power systems

Coordinated Control of SVS and CSC for Damping Power System Oscillations

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