Damping of Torsional Oscillations in Power Systems with Series-Compensated Lines

Fouad, A. A.; Khu, K. T.

doi:10.1109/tpas.1978.354545

Cited by 36 publications

(9 citation statements)

References 4 publications

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“…where x k , represents the controller states. u is the controller output that links with DV S in (9). DS e and DP e are the perturbations of the plant outputs (y p ) S e and P e around the nominal operating point.…”

Section: Robust Stabilisationmentioning

confidence: 99%

“…Speed input PSSs are generally added to excitation systems to enhance damping of the inertial modes of oscillations of turbine generators [7], but it was also established that they can destabilise torsional modes [8]. Fouad and Khu [9] were successful in damping torsional oscillations using generator-speed-based PSSs but the disturbances considered were small and only one mode could be controlled. Lee et al [10] proposed a new scheme for PSSs using deviation in generator speed and output power as input signals.…”

Section: Introductionmentioning

confidence: 99%

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Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems

Anaparthi

Pal

El-Zobaidi

2005

IEE Proc., Gener. Transm. Distrib.

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The application of loop shaping in H N control design through a dual-input power system stabiliser (PSS) in a benchmark power system model is demonstrated. The PSS stabilises two key system poles contributing to critical electromechanical oscillations involving turbine generators and electrical network. The IEEE First Benchmark Model has been considered in this study to demonstrate the effectiveness of the control. A linearised model of the system is pre-and post-compensated using loop-shaping approach. The problem of robust stabilisation of a normalised coprime factor plant description is formulated into a generalised H N problem and the solution is obtained analytically. The performance of the controller shows robustness to electromechanical modes, which were otherwise very poorly damped or undamped depending on operating conditions. The robustness is further validated in Simulink, including nonlinearities and device saturation limits.

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Section: Robust Stabilisationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems

Anaparthi

Pal

El-Zobaidi

2005

IEE Proc., Gener. Transm. Distrib.

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“…Furthermore, modulation of a generator excitation via a PSS has been recommended as a supplementary damper for torsional oscillations [1,12]. This paper presents a new concept for damping inertial and all torsional modes of T-G sets, based on coordinating the PSS and the auxiliary controllers of SVW units.…”

Section: Imnxxrddziwmentioning

confidence: 99%

Coordinated Static VAR Compensators and Power System Stabilizers for Damping Power System Oscillations

Hamouda

Iravani

Hackam

1987

IEEE Trans. Power Syst.

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Technical advantages of coordinating static VAr compensators and power system stabilizers for damping inertial and torsional rmodes of steam turbine generators are demonstrated.A new control concept for Static VAr Cacpensators based on using modal speeds as feedback signals, is presented. The concept enables a static VAr compensator to damp all the oscillatory modes as well as controlling the system voltage.A comparison is made between the cases where either modal speeds or generator speed deviations are used as the stabilizing signals of

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“…Conventionally power system stabilizer is used for damping the inertial oscillatory modes of T -G sets. Modulation ofgenerator excitation via PSS bas been proposed as a supplementary damper for torsional oscillations [2,3]. Saito et.al [4] have examined signals derived from reactive power, active power and field current in the excitation control to suppress subsynchronous resonance and have found the reactive power signal to be most effective.…”

Section: Introductionmentioning

confidence: 99%

Damping of Torsional Oscillations–a Coordinated Approach

Balasubramanyam

Murty

Parameswaran

et al. 1994

Electric Machines & Power Systems

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Damping of Torsional Oscillations in Power Systems with Series-Compensated Lines

Cited by 36 publications

References 4 publications

Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems

Coprime factorisation approach in designing multi-input stabiliser for damping electromechanical oscillations in power systems

Coordinated Static VAR Compensators and Power System Stabilizers for Damping Power System Oscillations

Damping of Torsional Oscillations–a Coordinated Approach

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