Coordinated design and performance evaluation of UPFC supplementary modulation controllers

Padiyar, К.R.; Saikumar, H.V.

doi:10.1016/j.ijepes.2004.08.010

Cited by 15 publications

(12 citation statements)

References 13 publications

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“…The absolute values of participation factors are computed using Equation (11) for different values of the SSSC gain and tabulated in Table II. The absolute values of participation factors are computed using Equation (11) for different values of the SSSC gain and tabulated in Table II.…”

Section: Three-machine Systemmentioning

confidence: 99%

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Effects of strong resonance in multimachine power systems with SSSC supplementary modulation controller

Jyothsna

Vaisakh

2011

Int. Trans. Electr. Energ. Syst.

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SUMMARY The modal interaction between the electric power system modes due to the variation of parameters can cause strong resonance. The effect of strong resonance on these oscillatory modes can sometimes be a concern for the system stability. This article investigates the performance of these modes, the swing mode and the exciter mode, in the presence of a static synchronous series compensator damping controller. The relevant modes of interaction at strong resonance are identified—exciter mode is identified by the method of participation factors, whereas swing mode is identified by the concept of multimodal decomposition. Strong resonance is detected in full order system and reduced order system, which is based on the method of perturbations, suggested by Seyranian. A tuning method is also presented to design static synchronous series compensator damping controller and obtain optimal design parameters so that strong resonance can be mitigated. The systems of study include the three‐machine 10‐bus system, 4‐machine 2‐area system, a 4‐machine 11‐bus practical system—a part of the southern grid—an Indian power system, and a 10‐machine 39‐bus New England system. Copyright © 2011 John Wiley & Sons, Ltd.

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Section: Three-machine Systemmentioning

confidence: 99%

“…The system considered is that as in [15]. The EM is identified by computing the participation factors using Equation (11) for different values of the SSSC damping controller gain K q . The operating value of the output of the SSSC is zero.…”

Section: Four-machine Two-area Systemmentioning

confidence: 99%

Effects of strong resonance in multimachine power systems with SSSC supplementary modulation controller

Jyothsna

Vaisakh

2011

Int. Trans. Electr. Energ. Syst.

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“…Some auxiliary robust stabilizing signals may be incorporated into the UPFC series controller to provide a feasible solution for stability enhancement [7][8]. An ∞ H mixed sensitivity approach can be applied to damping controller design for the UPFC [9] and a comparison has been made between the performance of ∞ H algorithm and μ-synthesis, developed for the SVC, in the presence of disturbances [10].…”

Section: Introductionmentioning

confidence: 99%

Optimal robust stabilizer design based on UPFC for interconnected power systems considering time delay

Koofigar

Isazadeh

2017

Archives of Electrical Engineering

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A robust auxiliary wide area damping controller is proposed for a unified power flow controller (UPFC). The mixedproblem with regional pole placement, resolved by linear matrix inequality (LMI), is applied for controller design. Based on modal analysis, the optimal wide area input signals for the controller are selected. The time delay of input signals, due to electrical distance from the UPFC location is taken into account in the design procedure. The proposed controller is applied to a multimachine interconnected power system from the IRAN power grid. It is shown that the both transient and dynamic stability are significantly improved despite different disturbances and loading conditions.

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“…In recent years, the fast progress in the field of power electronics has opened new opportunities for the power industry via utilization of the controllable FACTS devices such as UPFC, TCSC and SVC which offer an alternative means to mitigate power system oscillations [1] . Because of the extremely fast control action associated with FACTS-device operations, they have been very promising candidates for mitigation power system oscillation in addition to improve power system steady-state performance [2][3] . UPFC is regarded as one of the most versatile devices in the FACTS device family [4][5] , has the capabilities of control power flow in the transmission line, improving the transient stability, mitigation system oscillation and providing voltage support.…”

Section: Introductionmentioning

confidence: 99%

“…An industrial process, such as a power system, contains different kinds of uncertainties due to changes in system parameters and characteristics, loads variation and errors in the modeling. As a result, a fixed parameter controller based on the classical control theory such as PI or lead-lag controller [3,[7][8][9] is not certainly suitable for a UPFC control method. Thus, some authors have suggested fuzzy logic controllers [10] and neural networks method [11] to deal with system parameters changes for enhance system damping performance.…”

Section: Introductionmentioning

confidence: 99%

Robust Decentralized Control of Unified Power Flow Controller

Shayeghi¹

2009

American Journal of Applied Sciences

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Abstract:A new approach based on structured singular value is proposed for the robust decentralized Unified Power Flow Controller (UPFC) design. To achieve decentralization, using the schauder fixed point theorem the synthesis and analysis of Multi-Input Multi-output (MIMO) control system is translated into set of equivalent Multi-Input Single-Output (MISO) control system. Power systems such as the other industrial plants contain different kinds of uncertainties, which should be considered in controller design procedure. For this reason, the idea of µ-synthesis technique was used for designing of UPFC controllers. The proposed µ-based controller has a decentralized scheme and advantage of a decentralized controller design is reduction in the controller complexity and suitability for practical implementation. The effectiveness of the proposed control strategy was evaluated under operating conditions for damping low frequency oscillations in comparison with the classical controller to demonstrate its robust performance through nonlinear time simulation and some performance indices.

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Coordinated design and performance evaluation of UPFC supplementary modulation controllers

Cited by 15 publications

References 13 publications

Effects of strong resonance in multimachine power systems with SSSC supplementary modulation controller

Effects of strong resonance in multimachine power systems with SSSC supplementary modulation controller

Optimal robust stabilizer design based on UPFC for interconnected power systems considering time delay

Robust Decentralized Control of Unified Power Flow Controller

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