Load balancing by unbalanced capacitive shunt compensation &amp;#x2014; A numerical approach

Pană, Adrian; Baloi, Alexandru; Molnar-Matei, Florin

doi:10.1109/ichqp.2010.5625387

Cited by 14 publications

(7 citation statements)

References 9 publications

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“…In [8], power factor correction with load balancing in threephase three-wire systems was investigated numerically and it was shown that in many applications load balancing is significantly improved. Only capacitive elements were considered in the paper due to the cost factors.…”

Section: Introductionmentioning

confidence: 99%

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

Kiyan¹,

Aydemir

2014

2014 16th International Power Electronics and Motion Control Conference and Exposition

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Conventional three phase shunt reactive power compensation systems eliminate only the reactive power but do not contribute to the elimination of neutral current or voltage and current unbalance in three phase four wire systems. A hybrid wye and delta shunt compensation can be a solution for eliminating neutral current and unbalance besides compensating the reactive power. The compensator is composed of shunt capacitors and parallel connected thyristor controlled reactors (TCR) by two three-phase circuits, delta and wye. In this work, a mathematical model is presented based on symmetrical components theory and three compensation strategies are derived. The models are validated with MATLAB simulation. The three strategies of compensation are discussed and compared in terms of size and cost.

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Section: Introductionmentioning

confidence: 99%

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

Kiyan¹,

Aydemir

2014

2014 16th International Power Electronics and Motion Control Conference and Exposition

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“…In addition, unbalanced source/load and three-phased fourwire system are not considered. A numerical approach for load balancing by unbalanced capacitive shunt compensation has been proposed in a three-phase three-wire network [21]. The shunt compensator is delta connection and contains only capacitive susceptances and/or inductive susceptances.…”

Section: Introductionmentioning

confidence: 99%

A Novel Load-Balancing Method and Device by Intelligent Grouping Compound Switches-Based Capacitor Banks Shunt Compensation

Sun

Zhou

Liu

et al. 2013

Mathematical Problems in Engineering

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A novel compensator topology is proposed for three-phase unbalanced loads in the distribution networks. The negative and zero sequence compensation networks are proposed using delta-connected and star-connected capacitor banks. The compensation networks are paralleled with the unbalanced load to achieve a perfect balancing of active power and a complete compensation of reactive power of the unbalanced load. Intelligent grouping compound switches are implemented to control the capacitors, where, therefore, each capacitor can be switched between phases or phase and ground. Wireless sensors are also applied to acquire the load quantities. The compensation method proposed is based on symmetrical component theory. In addition, the load compensation based on instantaneous symmetrical component theory with positive sequence online extraction is proposed under unbalanced and distorted source voltages. The proposed load-balancing method and device are applied to Liaoning, Neimenggu, and Jilin provinces. The application results are provided to validate the performance of the proposed compensator topology and compensation method.

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“…To comprehend the resizing principle, consisting in the redistribution of the reactive capacitive compensating power on the positive sequence, from the Yn compensator to the ∆ compensator, it is necessary to preliminary understand the mathematical model of the BRC. For this purpose, Sections 2-4 of this paper summarize familiar elements, previously developed by the same authors [26][27][28]. The new contributions of this paper consist of the mathematical model of the resizing methods (Section 5), respectively the presentation of the results of certain applications for their validation (Section 6).…”

Section: )mentioning

confidence: 99%

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

2018

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Nowadays, improving the power quality at the Point of Common Coupling (PCC) between the consumers' installations and the distribution system operators' installations depends more and more on the use of specialized equipment, able to intervene in the network to eliminate or diminish the disturbances. The reactive power compensators remain valid solutions for applications in consumer and electricity distribution, in those situations when the criterion regarding the costs of installing and operating the equipment is more important than the ones related to the reaction speed or the control accuracy. This is also the case of the equipment for power factor improvement and load balancing in a three-phase distribution network. The two functions can be achieved simultaneously by using an unbalanced static var compensator, known as an adaptive balancing compensator, achieved by adjusting the equivalent parameters of circuits containing single-phase coils and capacitor banks. The paper presents the mathematical model for the sizing and operation of a balancing reactive compensator for a three-phase four-wire network and then presents some resizing methods to convert it into a balancing capacitive compensator, having the same functions. The mathematical model is then validated by a numerical application, modelling with a specialized software tool, and by experimental laboratory determinations. The paper contains strong arguments to support the idea that a balancing capacitive compensator becomes a very advantageous solution in many industrial applications.

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Load balancing by unbalanced capacitive shunt compensation — A numerical approach

Cited by 14 publications

References 9 publications

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

A Novel Load-Balancing Method and Device by Intelligent Grouping Compound Switches-Based Capacitor Banks Shunt Compensation

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

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Load balancing by unbalanced capacitive shunt compensation &#x2014; A numerical approach

Cited by 14 publications

References 9 publications

Load balancing, reactive power compensation and neutral current elimination in three phase &#x2014; Four wire systems

Load balancing, reactive power compensation and neutral current elimination in three phase &#x2014; Four wire systems

A Novel Load-Balancing Method and Device by Intelligent Grouping Compound Switches-Based Capacitor Banks Shunt Compensation

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

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Load balancing by unbalanced capacitive shunt compensation — A numerical approach

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems

Load balancing, reactive power compensation and neutral current elimination in three phase — Four wire systems