Analysis and Mitigation of Power Quality Issues in Distributed Generation Systems Using Custom Power Devices

Hossain, Eklas; Tür, Mehmet Rıda; Padmanaban, Sanjeevikumar; Ay, Selim; Khan, Imtiaj

doi:10.1109/access.2018.2814981

Cited by 303 publications

(133 citation statements)

References 72 publications

(82 reference statements)

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“…various schemes such as static var-compensation (SVC) [35], the static reactive power compensator (STATCOM) [36], and the power balance theory (PBT). A passivity based control (PBC) is mentioned as a suitable control strategy for an unbalanced voltage condition [37].…”

Section: Many Control Algorithms Have Been Reported For the Voltage Rmentioning

confidence: 99%

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Parwal¹,

Fregelius²,

Silva³

et al. 2019

EPE

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Renewable energy sources, such as photovoltaic wind turbines, and wave power converters, use power converters to connect to the grid which causes a loss in rotational inertia. The attempt to meet the increasing energy demand means that the interest for the integration of renewable energy sources in the existing power system is growing, but such integration poses challenges to the operating stability. Power converters play a major role in the evolution of power system towards SmartGrids, by regulating as virtual synchronous generators. The concept of virtual synchronous generators requires an energy storage system with power converters to emulate virtual inertia similar to the dynamics of traditional synchronous generators. In this paper, a dynamic droop control for the estimation of fundamental reference sources is implemented in the control loop of the converter, including active and reactive power components acting as a mechanical input to the virtual synchronous generator and the virtual excitation controller. An inertia coefficient and a droop coefficient are implemented in the control loop. The proposed controller uses a current synchronous detection scheme to emulate a virtual inertia from the virtual synchronous generators. In this study, a wave energy converter as the power source is used and a power management of virtual synchronous generators to control the frequency deviation and the terminal voltage is implemented. The dynamic control scheme based on a current synchronous detection scheme is presented in detail with a power management control. Finally, we carried out numerical simulations and verified the scheme through the experimental results in a microgrid structure.

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Section: Many Control Algorithms Have Been Reported For the Voltage Rmentioning

confidence: 99%

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Parwal¹,

Fregelius²,

Silva³

et al. 2019

EPE

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show abstract

“…The present research on the accessible capacity of the distributed power sources has yielded certain results. The authors of [33] proposed a method for calculating the admission capacity based on the dynamic load security domain, and analyzed the impact of different load levels and of the location of the distributed power grids on the accessible capacity. The authors of [34] established a distributed power supply capacity optimization model considering the current protection constraints of the distribution network, and made an intelligent algorithm to solve the model.…”

Section: Introductionmentioning

confidence: 99%

Solar PV Grid Power Flow Analysis

et al. 2019

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As the unconstrained integration of distributed photovoltaic (PV) power into a power grid will cause changes in the power flow of the distribution network, voltage deviation, voltage fluctuation, and so on, system operators focus on how to determine and improve the integration capacity of PV power rationally. By giving full consideration to the static security index constraints and voltage fluctuation, this paper proposes a maximum integration capacity optimization model of the PV power, according to different power factors for the PV power. Moreover, the proposed research analyzes the large-scale PV grid access capacity, PV access point, and multi-PV power plant output, by probability density distribution, sensitivity analysis, standard deviation analysis, and over-limit probability analysis. Furthermore, this paper establishes accessible capacity maximization problems from the Institute of Electrical and Electronics Engineers (IEEE) standard node system and power system analysis theory for PV power sources with constraints of voltage fluctuations. A MATLAB R2017B simulator is used for the performance analysis and evaluation of the proposed work. Through the simulation of the IEEE 33-node system, the integration capacity range of the PV power is analyzed, and the maximum integration capacity of the PV power at each node is calculated, providing a rational decision-making scheme for the planning of integrating the distributed PV power into a small-scale power grid. The results indicate that the fluctuations and limit violation probabilities of the power system voltage and load flow increase with the addition of the PV capacity. Moreover, the power loss and PV penetration level are influenced by grid-connected spots, and the impact of PV on the load flow is directional.

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“…There are other natural causes for PQ problems such as flashover, electronic equipment failure, and lighting. In general, PQ problems are voltage sag and swell, flicker, harmonics, and notches . Among these PQ problems, voltage related disturbances such as voltage swell and voltage sag are very severe.…”

Section: Introductionmentioning

confidence: 99%

Real‐time implementation of transformerless dynamic voltage restorer based on T‐type multilevel inverter with reduced switch count

Rajkumar

Parthiban

Lokesh

2019

Int Trans Electr Energ Syst

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Summary This paper presents T‐type multilevel inverter topology‐based dynamic voltage restorer (DVR) with reduced switch count. In medium voltage and high‐power applications, two‐level voltage source inverters are insufficient because of more voltage stress on switches, large dv/dt, size, and cost of the filter. To overcome these problems, multilevel inverter‐based DVR is suitable, which can be directly connected to the medium voltage distribution system without injection transformer. In addition, the control of the DVR is implemented by abc to dq controller. The voltage compensation capability of the proposed DVR is enhanced by employing the in‐phase compensation technique with reduced carrier pulse width modulation scheme, and also the total harmonic distortion(THD) in the load voltage is reduced. The design and analysis of the proposed system are discussed, and its performance is validated in MATLAB/Simulink and in the OPAL‐RT real time processor.

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Analysis and Mitigation of Power Quality Issues in Distributed Generation Systems Using Custom Power Devices

Cited by 303 publications

References 72 publications

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Virtual Synchronous Generator Based Current Synchronous Detection Scheme for a Virtual Inertia Emulation in SmartGrids

Solar PV Grid Power Flow Analysis

Real‐time implementation of transformerless dynamic voltage restorer based on T‐type multilevel inverter with reduced switch count

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