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Showing 1 to 14 of 14 for “"power system stabilizers"”.
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Centralized Control of Power System Stabilizers
… a centralized nonlinear controller that acts on power system stabilizers, to cooperatively increase the damping of problematic small signal oscillations all over the system. The structure based on decision trees results in a simple, efficient, and dependable methodology that imposes much less …
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Design of power system stabilizers using evolutionary algorithms
… oscillations has been of major concern to power system engineers. These oscillations range from 0.1 to 3Hz and tend to be poorly damped especially in systems equipped with high gain fast acting AVRs and highly interconnected networks. If these oscillations are not adequately damped, they …
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Damping of electromechanical oscillations using power system stabilizers
… damping of electromechanical oscillations using Power System Stabilizers (PSS). The thesis focuses on three problems associated with the damping of these oscillations, namely the determination of the optimal locations of the PSS, the determination of the best control structure of the PSS and the …
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Inter-Area Oscillation Damping with Power System Stabilizers and Synchronized Phasor Measurements
… are detrimental to the goals of maximum power transfer and optimal power system security. A contemporary solution to this problem is the addition of power system stabilizers to the automatic voltage regulators on the generators in the power system. The damping provided by this additional …
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An exiplicit damping sensitivity expression for power system stabilizers applications in power systems
Interconnected power systems are subject to low frequency oscillations. These oscillations, if poorly damped, threaten the stability of the system and limit its power transfer capability. Power System Stabilizers (PSS) are widely used to enhance the damping of electromechanical oscillatory modes. …
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AN OPTIMAL VARIABLE STRUCTURE STABILIZER FOR A MULTIMACHINE GENERATING PLANT
… plant have received particular attention from power system engineers due to the undesirable effects of these oscillations on the system, and also due to the fact that the individual stabilizers now in use are not effective in damping out all modes of oscillation. A multivariable stabilizer can …
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Power system stabilizer design using out of phase torque correction method
The need for power system stabilizers (PSS) in interconnected power systems has become essential to damp low frequency oscillations and enhance the system stability. Conventional PSS design techniques utilize local measurements, hence allowing the use of single machine infinite bus method to tune …
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Inter-area oscillation damping in large scale power systems with unified power flow controllers
"Power system oscillations occur in power networks as a result of contingencies such as faults or sudden changes in load or generation. They are detrimental to the operation of the system since they affect system stability and the optimal power flow through it. These oscillations do not usually …
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A novel method for power system stabilizer design
Power system stability is defined as the condition of a power system that enables it to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a finite disturbance. In the evaluation of stability, the …
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DECENTRALIZED CONTROLLERS FOR INTERCONNECTED POWER SYSTEMS
… oscillations in a multi-machine electrical power system. A particular real power system comprised of five generating plants and an infinite bus was investigated in these studies. A review is given of the approaches used at present to improve system damping using power system stabilizers and …
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IMPACT OF HVDC INVERTER STATION FAULTS ON TURBINE-GENERATOR SHAFT TORSIONAL TORQUES
… the interaction between turbine-generator shaft systems and the electrical network disturbances has been extensively investigated during the last two decades. Those investigations have shown that some of these disturbances can inflict severe torsional stressing on the shafts of the …
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Decentralized Synergetic Control of Power Systems
… to enhance the transient stability of power systems. Due to the nonlinearities and complexities of the system, nonlinear control design techniques are required to improve its dynamic performance. In this dissertation a synergetic control technique is being proposed to design …
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Coordinated Control of Inter-area Oscillations using SMA and LMI
… oscillations is through the installation of Power System Stabilizers (PSSs) which provide damping control action through excitation control systems of the generating units. However, study of recent blackouts has shown that the control action provided by a PSS alone is not sufficient for …
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A novel method for power system stabilizer design
Power system stability is defined as the condition of a power system that enables it to remain in a state of operating equilibrium under normal operating conditions and to regain an acceptable state of equilibrium after being subjected to a finite disturbance. In the evaluation of stability, the …