Analysis of thyristor-controlled phase shifter applied in damping power system oscillations

Wang, H.F.; Swift, F.J.; Li, M.

doi:10.1016/s0142-0615(96)00020-8

Cited by 32 publications

(5 citation statements)

References 8 publications

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“…The application of supplementary controllers for the FACTS devices which use reliable and high speed power electronic devices can considerably improve system damping and can also improve system voltage profile, which is advantageous over PSS [5]. As one of the FACTS devices, the TCPS provides an alternative to the conventional PSS in suppressing power system oscillations and is of particular importance to power system where a PSS cannot be properly installed for reasons such as the system voltage profile, the unsuitability of the generator and so on [13]. The several researches on a supplementary controller for a TCPS have been carried out to enhance power system stability by increasing the damping in power system [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…As one of the FACTS devices, the TCPS provides an alternative to the conventional PSS in suppressing power system oscillations and is of particular importance to power system where a PSS cannot be properly installed for reasons such as the system voltage profile, the unsuitability of the generator and so on [13]. The several researches on a supplementary controller for a TCPS have been carried out to enhance power system stability by increasing the damping in power system [13][14][15][16][17][18][19][20]. However, the power systems have system uncertainties due to various generating and loading conditions, variation of system parameters, and system nonlinearity, etc.…”

Section: Introductionmentioning

confidence: 99%

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Damping of Power System Oscillation using robust thyristor-controlled phase shifter controller

Han¹,

Jeong²,

Lee³

2017

International Journal of Innovative Research in Electrical, Ele

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Abstract:In this paper, a robust supplementary controller of thyristor-controlled phase shifter(TCPS) using  H control theory has been designed to damp power system oscillation and to enhance power system stability despite uncertainties of the power systems. Since an order of a designed controller using  H control theory become very high, a structure-specified low-order TCPS controller using genetic algorithm (GA) has been designed. In order to treat disturbance attenuation and robust stability specifications simultaneously in the stage of  H controller design using GA, two weighting transfer functions have been selected. The  H norm and damping ratio have been used as the objective function in GA. To verify control performance of proposed TCPS controller, the modal analysis and nonlinear simulations for one-machine infinite bus system have been performed. The simulation results under various disturbances for various operating conditions showthat the proposed TCPS controller provided better dynamic responses in comparison with the conventional PSS and TCPS controller.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Damping of Power System Oscillation using robust thyristor-controlled phase shifter controller

Han¹,

Jeong²,

Lee³

2017

International Journal of Innovative Research in Electrical, Ele

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“…At the same time, tie-line power flow control by TCPS installed in series with a tie-line in between the two areas of an interconnected power system has the possibility to control the system frequency positively. Ample applications of TCPS for the improvement of dynamic and transient stabilities of power systems have been reported in the literature [17][18][19]. However, no attempt has been made to improve the performance of AGC of interconnected power systems considering TCPS in series with the tie-line.…”

Section: Introductionmentioning

confidence: 99%

AGC study of a hydrothermal system with SMES and TCPS

Abraham

Das

Patra

2008

Int Trans Elec Energy Syst

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SUMMARYFrequency deviations and inter-area tie-power fluctuations from their respective scheduled values following a local load disturbance are a source of great concern in interconnected power system operation and control. In this paper, a new method is proposed to minimise such deviations and thereby enhance the performance of Automatic Generation Control (AGC) of an interconnected hydrothermal power system with the coordinated operation of a Superconducting Magnetic Energy Storage (SMES) unit in thermal area and a Thyristor Controlled Phase Shifter (TCPS) in series with the tie-line. Generation Rate Constraints (GRCs) are also considered for the thermal and hydro systems. The integral controller gain settings are obtained by optimising a quadratic performance index using the Integral Squared Error technique. Comparison of the dynamic responses demonstrates the effectiveness and efficiency of the suggested SMES-TCPS combination in suppressing and stabilising the oscillations of frequency and tie-power deviations as well as in reducing the settling time.

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“…Therefore, the real power ow can be regulated to mitigate the low frequency oscillations and enhance power system transient stability. The eOE ectiveness of the SPS in improving power system stability has been investigated in several studies with promising results [10][11][12][13][14]. This provides an alternative choice to the conventional PSS (CPSS) in suppressing power system oscillations.…”

Section: Introductionmentioning

confidence: 99%

Coordinated Design of Power System Stabilizers and Static Phase Shifters Using Genetic Algorithm

Abido¹

1999

Electric Machines & Power Systems

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Coordinated design of a power system stabilizer (PSS) and a static phase shifter (SPS) using genetic algorithm (GA) is investigated in this paper. The design problem of PSS and SPS controller is formulated as an optimization problem. An eigenvalue-based objective function to increase the system damping is proposed. Then, GA is employed to search for optimal controller parameters. DiOE erent control schemes have been proposed and tested on a weakly connected power system with diOE erent disturbances, loading conditions, and parameter variations. It was observed that although the PSS enhances the power system stability, the SPS controller provides most of the damping and improves the voltage pro le of the system. The nonlinear simulation results show the effectiveness and robustness of the proposed control schemes over a wide range of loading conditions and system parameter variations.

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Analysis of thyristor-controlled phase shifter applied in damping power system oscillations

Cited by 32 publications

References 8 publications

Damping of Power System Oscillation using robust thyristor-controlled phase shifter controller

Damping of Power System Oscillation using robust thyristor-controlled phase shifter controller

AGC study of a hydrothermal system with SMES and TCPS

Coordinated Design of Power System Stabilizers and Static Phase Shifters Using Genetic Algorithm

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