Voltage and current unbalance compensation using a static var compensator

Xu, Yan; Tolbert, Leon M.; Kueck, J.D.; Rizy, D.T.

doi:10.1049/iet-pel.2008.0094

Cited by 80 publications

(45 citation statements)

References 12 publications

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“…Voltage and current unbalances are harmful to electric power devices [5,6]. The unbalance is larger; the injury to electric power devices is larger, too.…”

Section: Discussionmentioning

confidence: 99%

Application of SIMULINK to Analyze the Unbalanced Operation Characteristics of a Three-Phase Transformer with Non-Identical Winding Impedances

Yang¹,

Huang²,

Kao³

2015

Advances in Intelligent Systems Research

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Abstract--The aim of this paper is to introduce the application of SIMULINK to analyze the unbalanced operation characteristics of a three-phase transformer with non-identical winding impedances. SIMULINK is popular professional simulation software in power industry and departments of electrical and electronic engineering of colleges. If the winding impedances of a three-phase transformer are not identical, unbalanced problems will be produced in power systems. In this paper, the simulation technique for a three-phase transformer with non-identical winding impedances is presented. The unbalanced operation characteristics of a three-phase transformer with non-identical winding impedances are also presented and discussed here.

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“…Voltage and current unbalances are harmful to electric power devices [5,6]. The unbalance is larger; the injury to electric power devices is larger, too.…”

Section: Discussionmentioning

confidence: 99%

Application of SIMULINK to Analyze the Unbalanced Operation Characteristics of a Three-Phase Transformer with Non-Identical Winding Impedances

Yang¹,

Huang²,

Kao³

2015

Advances in Intelligent Systems Research

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“…The traditional techniques proposed in literature for eliminating asymmetries include distribution static synchronous compensators [7], or dynamically switching residential loads between phases [8] which are costly. Lately, new schemes have been proposed to control inverters either providing negative and zero sequence currents [9], [10] or transferring power between the phases [11]- [13] to balance the network.…”

Section: Motivationmentioning

confidence: 99%

A Centralised Control Method for Tackling Unbalances in Active Distribution Grids

Karagiannopoulos

Aristidou

Hug

2018

2018 Power Systems Computation Conference (PSCC)

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“…The benefits of power factor correction include energy savings, transmission loss reductions, and the feasibility of operating transmission lines closer to their thermal limits. Effective tools used to achieve power factor correction include static VAR compensators such as fixed capacitor thyristor controlled reactors, thyristor switched capacitors (TSC), static synchronous compensators (statcom), and power converter based static VAR compensators [1]- [8]. The traditional thyristor controller reactor (TCR) is simply a reactor connected in series to two anti-parallel thyristors where the series combination is supplied by the phase or line to line voltage of the AC power system network.…”

Section: Introductionmentioning

confidence: 99%

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

Obais

Pasupuleti²

2014

Journal of Power Electronics

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In this paper, a new continuously and linearly controlled capacitive static VAR compensator is proposed for the automatic power factor correction of inductive single phase loads in 220V 50Hz power system networks. The compensator is constructed of a harmonic-suppressed TCR equipped with a new adaptive current controller. The harmonic-suppressed TCR is a new configuration that includes a thyristor controlled reactor (TCR) shunted by a passive third harmonic filter. In addition, the parallel configuration is connected to an AC source via a series first harmonic filter. The harmonic-suppressed TCR is designed so that negligible harmonic current components are injected into the AC source. The compensator is equipped with a new adaptive closed loop current controller, which responds linearly to reactive current demands. The no load operating losses of this compensator are negligible when compared to its capacitive reactive current rating. The proposed system is validated on PSpice which is very close in terms of performance to real hardware.

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Voltage and current unbalance compensation using a static var compensator

Cited by 80 publications

References 12 publications

Application of SIMULINK to Analyze the Unbalanced Operation Characteristics of a Three-Phase Transformer with Non-Identical Winding Impedances

Application of SIMULINK to Analyze the Unbalanced Operation Characteristics of a Three-Phase Transformer with Non-Identical Winding Impedances

A Centralised Control Method for Tackling Unbalances in Active Distribution Grids

Automatic Power Factor Correction Using a Harmonic-Suppressed TCR Equipped with a New Adaptive Current Controller

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