An output feedback static var controller for the damping of generator oscillations

Lee, Shun; Liu, Chun-Chang

doi:10.1016/0378-7796(94)90043-4

Cited by 18 publications

(8 citation statements)

References 20 publications

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“…Note that for this linearised power system model, controllers are designed and put in loop with the plant model so that when there are any disturbances taking place like the faults, the oscillations are reduced quickly in no time, thus becoming a closed-loop feedback control system (Lee and Liu, 1994). The simulation parameters of the three-machine, nine-bus interconnected power system model with four loads L1-L4 and two UPFCs are given in Table 1 (Cai and Erlich, 2002).…”

Section: Figurementioning

confidence: 99%

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Design and development of a fuzzy coordinated control strategy for faults occurring at different buses in an interconnected power system

Obulesu

Kodad²,

Ram

2011

IJCAT

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This paper presents the design and development of a fuzzy controller using UPFCs to damp out the oscillations in FACTS-based integrated multi-machine power system when faults takes place at different buses. The combination of a fuzzy coordination scheme with a PODbased UPFC is used to suppress the oscillations upon the occurrence of a fault at the generator side. Three Simulink models are developed with and without the controller by considering the occurrence of one fault at a time near each generator. The three-phase to ground symmetrical fault is made to occur near first generator for 200 ms in the model 1, next at second generator in model 2 and finally at third generator in model 3. Simulations are performed with and without the controller. The three models are compared for the effectiveness of the fault occurrence near each of the generators. Simulation results show the effectiveness of the developed method.

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Section: Figurementioning

confidence: 99%

“…The first-generation (G1) FACTS devices include SVC, TCPS and TCSC. It has been found that SVCs can be effective in damping power system oscillations if a supplementary feedback signal is applied (Hammad, 1986;Lee and Liu, 1994). Compared with other FACTS devices, little attention has been paid to TCPS modelling and control.…”

Section: Introductionmentioning

confidence: 99%

Design and development of a fuzzy coordinated control strategy for faults occurring at different buses in an interconnected power system

Obulesu

Kodad²,

Ram

2011

IJCAT

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“…According to [5][6][7][8] the most suitable supplementary input signals are locally measured transmission line-current magnitude or locally measured active power. In [9,10] used generator angular speed as a supplementary input signal. proposed a method for selecting suitable feedback signal to FACTS controllers for improving damping oscillations base on four indicators for both MIMO and SISO system.…”

Section: Introductionmentioning

confidence: 99%

Signals selection of SVC device for damping oscillation

Magaji

Mustafa

Muda

2010

10th International Conference on Information Science, Signal Processing and Their Applications (ISSPA 2010)

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this paper proposes Eigen value analyses to assess the most appropriate input signals (stabilizing signal) for supplementary damping control of SVC.The approaches considered in selecting most receptive signal to a mode of the Inter-area oscillation are: controllability and observability based on Hankel Singular Value (HSV) and non-minimum phase system based on Right-Half Plane zeroes. The usefulness of the proposed method of selection signals is demonstrated on IEEE U5-Bus Power system

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“…According to Zhou, 1993) the best input signals for power oscillation controler are locally measured transmission line-current magnitude or locally measured active power. Lee and Liu (1994) and Zhou (1993) applied the remote signal that is generator angular speed as a auxiliary input signal.…”

Section: Introductionmentioning

confidence: 99%

Static and Dynamic Location of Variable Impedance Devices for Stability Studies

Magaji¹

2013

American Journal of Applied Sciences

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This study used the concept of model controllability and observability in product form called residue factor to find the best location of Thyristor-Controlled based series and shunt devices called variable impedance devices. The success of this controller depends on its best possible location in busbar or line of power system network. The method is based on the relationship between the parameters of variable impedance devices to the vital modes. Linearization of non linear model of Power system and the thyristors based FACTS devices provide mens of computing residue factor and singular value factor. The location of variable impedance or thyristors based controllers have been calculated for the base case only. The usefulness of the these methods of placement considered 16 machines, 68 bus systems

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An output feedback static var controller for the damping of generator oscillations

Cited by 18 publications

References 20 publications

Design and development of a fuzzy coordinated control strategy for faults occurring at different buses in an interconnected power system

Design and development of a fuzzy coordinated control strategy for faults occurring at different buses in an interconnected power system

Signals selection of SVC device for damping oscillation

Static and Dynamic Location of Variable Impedance Devices for Stability Studies

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