Assessment of voltage unbalance

Jouanne, Annette von; Banerjee, B.

doi:10.1109/61.956770

Cited by 548 publications

(261 citation statements)

References 31 publications

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“…One reason is the approximate representation of the PV generation and another is the use of single-phase equivalents for the distribution system. Tools based on single-phase equivalents may not provide the best operating solutions for three-phase systems, especially when circuits and/or loads are considerably unbalanced [2]. For these reasons, this work models the PV power plants in the TOPF (three-phase optimal power flow) from the PV module equivalent circuit and, with TOPF, analyzes the impact of the PV generation on the Corresponding author: Malinwo Estone Ayikpa, electrical engineer, research field: electric power systems.…”

Section: Introductionmentioning

confidence: 99%

Three-Phase Optimal Power Flow for Study of PV Plant Distributed Impact on Distribution Systems

Ayikpa¹,

Almeida²,

Danielski³

2017

JEE

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This paper presents a TOPF (three-phase optimal power flow) model that represents photovoltaic systems. The PV plant is modeled in the TOPF as active and reactive power source. Reactive power can be generated or absorbed using the available capacity and the adjustable power factor of the inverter. The reduction of unbalance voltage and losses in the distribution systems is obtained by actions of reactive power control of the inverter. The TOPF is formulated by current balance equations and the PV systems are modeled via an equivalent circuit. The primal-dual interior point method is used to obtain the optimal operating points for the systems for different scenarios of solar irradiance and temperature, thus providing a detailed view of the impact of photovoltaic distributed generation.

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Section: Introductionmentioning

confidence: 99%

Three-Phase Optimal Power Flow for Study of PV Plant Distributed Impact on Distribution Systems

Ayikpa¹,

Almeida²,

Danielski³

2017

JEE

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“…Table 1 lists the network parameters, and the line and load data. The unbalance factor (UF) is defined as the ratio of the negative sequence voltage to the positive sequence voltage [16]. This line impedance means that the short circuit ratio (SCR) is approximately 10 and the X/R ratio is 3 [17].…”

Section: Experimental Setup and Conditionsmentioning

confidence: 99%

An Integrated Compensation Algorithm for PCC Voltage Fluctuation and Unbalance with Variable Limit of Positive and Negative Sequence Currents

Im¹,

Song²,

Cho³

2017

Journal of Electrical Engineering and Technology

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-This paper proposes a point of common coupling (PCC) voltage compensation algorithm using a current limitation strategy for use in distributed generation (DG). The proposed strategy maintains the PCC voltage by prioritizing currents when an output current reference is larger than the current capacity of the power condition system (PCS) of the DG. With this strategy, the DG outputs the active current, reactive current, and the negative sequence current. The DG uses the reactive current for maintaining the PCC voltage within a normal range; the negative sequence current is used for reducing the PCC voltage unbalance. The proposed method was verified using PSIM simulation and experimental results.

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“…This occurs as a result of; uneven distribution of loads such as single phase traction drives and electric locomotives; open wye and delta transformer banks; asymmetric transmission impedances; and blown fuses in three phase capacitor banks [1]. These unbalanced voltages in power system result in sags, swells and interruptions [2].…”

Section: Introductionmentioning

confidence: 99%

Control of a Modular Multi-level Converter STATCOM for low voltage ride-through condition

Oghorada

Zhang

2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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Assessment of voltage unbalance

Cited by 548 publications

References 31 publications

Three-Phase Optimal Power Flow for Study of PV Plant Distributed Impact on Distribution Systems

Three-Phase Optimal Power Flow for Study of PV Plant Distributed Impact on Distribution Systems

An Integrated Compensation Algorithm for PCC Voltage Fluctuation and Unbalance with Variable Limit of Positive and Negative Sequence Currents

Control of a Modular Multi-level Converter STATCOM for low voltage ride-through condition

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