Experimental Validation of Power Mechanism for Load Balancing Using Variable Susceptances in Three Phase Four Wire Distribution Networks

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

doi:10.1109/eurcon.2007.4400415

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…Determination of the sequence components of the currents, on the phases of the load-Yn compensator-Δ compensator assembly seen from the network, is done based on the phase components of the currents [28]: As a result of the Adaptive Balancing Compensator (ABC) action, the load-compensator assembly is seen from the network as a perfectly balanced equivalent load, which consumes only active power [16,26,28]. For the sizing of the six susceptances of the compensator, the analytical expressions are determined applying the conditions of simultaneous cancellation of the symmetrical current components with negative effects on the phases of the load-compensator assembly: the imaginary (reactive) component of the positive sequence current, the real and imaginary components of the negative and zero sequence current components [9]:…”

Section: The "Classic" Methods Of Sizing a Balancing Reactive Compensatormentioning

confidence: 99%

“…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%

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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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Section: The "Classic" Methods Of Sizing a Balancing Reactive Compensatormentioning

confidence: 99%

Section: )mentioning

confidence: 99%

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

2018

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“…Found The compensation of the reactive components of the load positive sequence currents is also possible. Thereby the load-compensator assembly is seen from the network as a perfectly balanced equivalent active [15,25,27].…”

Section: Introductionmentioning

confidence: 99%

Iterative Method for Determining the Values of the Susceptances of a Balancing Capacitive Compensator

2018

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To increase the electrical power quality, in the last decades, an intense development in the last decades of high-performance equipment built as advanced power electronics applications, such as the compensators from Switching Power Converter category, has taken place. For all that, Reactive Power Compensators (RPC) based on passive circuit elements, such as Static var Compensators (SVCs), still occupy a wide range of applications in customer and installations of the distribution system installations. The functions of power factor (PF) improvement and load balancing in a three-phase distribution network can be achieved with an unbalanced SVC, known as the Adaptive Balancing Reactive Compensator (ABRC). Presenting first the mathematical model of the initial sizing and the working mechanism of a Balancing Reactive Compensator (BRC) for a three-phase four-wire network, this article develops a compensator resizing algorithm through an iterative change of the initial sizing to transform the compensator into a Balancing Capacitive Compensator (BCC), which keeps the same functions. By using two computational and modeling software tools, a case study on the application of the method was carried out, demonstrating the availability of the sizing problem solution and validating the unbalanced capacitive compensation as an efficient way to PF improving and load balancing in a PCC (Point of Common Coupling).

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“…In [10] and [11], the hybrid compensation consisting of wye and delta shunt circuits for three phases four wire systems was proposed (Fig. 1), and mathematical models were derived.…”

Section: Introductionmentioning

confidence: 99%

“…1), and mathematical models were derived. In [10], a capacitor and parallel connected TCR were considered to achieve the required susceptances for each phase and compensator. On the other hand, intelligent grouping compound switches were proposed for capacitor switching in [11].…”

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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Experimental Validation of Power Mechanism for Load Balancing Using Variable Susceptances in Three Phase Four Wire Distribution Networks

Cited by 6 publications

References 3 publications

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

Iterative Method for Determining the Values of the Susceptances of a Balancing Capacitive Compensator

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

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Experimental Validation of Power Mechanism for Load Balancing Using Variable Susceptances in Three Phase Four Wire Distribution Networks

Cited by 6 publications

References 3 publications

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

From the Balancing Reactive Compensator to the Balancing Capacitive Compensator

Iterative Method for Determining the Values of the Susceptances of a Balancing Capacitive Compensator

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

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