Impact of Smart Grids and Green Power Generation on Distribution Systems

Mozina, Charles J.

doi:10.1109/tia.2013.2253292

Cited by 98 publications

(33 citation statements)

References 4 publications

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“…compensators, paralleled capacitor bank, filters and cable capacitances). In other words, in any system that there is any capacitances that can be series with a nonlinear reactance of transformer, ferroresonance may happen [1]. Ferroresonance has some symptoms that appear in the electrical system, and thus operators can realize about its occurrence.…”

Section: Ferroresonance and Its Effectsmentioning

confidence: 99%

“…Because of the existence of capacitor banks with DG units and also islanding issues, ferroresonance are prone to occur in DG unit [1] with no need of having any unbalanced condition. For each DG unit that has a transformer with nonlinear characteristics and also a suitable capacitance value, ferroresonance may happen if it is on islanding condition and the consumption of connected load is low [9].…”

Section: Unitsmentioning

confidence: 99%

“…With no shadow of doubt, connecting Distributed Generation units to the existing networks is a new challenge for utilities worldwide, as the dynamic behavior of such system can give rise to undesired effects in the network [1]. As the installed DG is increasing constantly, it is important to consider these effects in order to avoid some harmful events that could hinder the overall operation of the electrical system.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, as in the case of some WT, a capacitor bank is required to compensate the reactive power. In these kind of facilities the installation of these capacitors increase the probability of having ferroresonance, if compared with systems than don't have such capacitors [1]. Additionally, ferroresonance may occur when the load of transformers becomes low or they work under no load condition.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Analysis of ferroresonance effects in distribution networks with distributed source units

Monadi

Luna

Candela

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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The connection of Distributed Generation (DG) units\ud to existing networks may give rise to harmful effects on the\ud network and the DG units itself. Therefore, due to increasing\ud penetration of DG units, it is important to consider these effects\ud in order to avoid some of harmful events. Ferroresonance is one\ud of these destructive phenomena. Over voltages due to this\ud phenomena can damage devices which are connected to the\ud network. In DG systems, due to the use of capacitor banks which\ud are used for VAR compensation, grid connection filters, etc.\ud ferroresonance may appear. Also, special operations like\ud islanding, may lead these systems to ferroresonance. In\ud traditional systems ferroresonance normally appear after there is\ud an unbalance in the system. Nevertheless, for networks with\ud significant penetration of DG units, the situation that gives rise to\ud ferroresonance may be different from traditional systems and\ud they can happen without any unbalancing occurrence. In this\ud paper a distribution system integrating wind (WT) and\ud photovoltaic (PV) power systems has been evaluated in order to\ud analyze the performance of ferroresonance in such systems.\ud Finally, the most appropriate techniques to prevent its\ud appearance, and the associated over voltages, have been studied\ud and implemented using PSCAD/EMTDC.Peer ReviewedPostprint (published version

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Section: Ferroresonance and Its Effectsmentioning

confidence: 99%

Section: Unitsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of ferroresonance effects in distribution networks with distributed source units

Monadi

Luna

Candela

et al. 2013

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society

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“…Distributed generation systems (DGS) have attracted considerable attention in the last years [1][2][3][4][5][6], essentially because of the increasing concern about the environment and the continuous expansion of the world energy demand [7]. Moreover, some DGS, as those based on photovoltaic, can be installed close to the loads, reducing distribution and transmission losses.…”

Section: Introductionmentioning

confidence: 99%

Inverter control strategy for DG systems based on the Conservative power theory

Brandão

Marafão

Paredes

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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Considering that typical distributed generators are equipped with a switching power interface and most of them have a DC-AC converter, this paper deals with a multi task control strategy for distributed generation (DG) inverters. Such strategy simultaneously allows the DG systems to inject the available energy, as well as to work as a voltage drop compensator or an active power filter, mitigating load current disturbances and improving power quality. The main difference of the proposed methodology with respect to others in the literature is that the proposed control loops are based on the Conservative Power Theory decompositions. This provides decoupled power and current references for the inverter control, offering a very flexible, selective and powerful strategy for the DG control system. The paper also discusses the choice of the waveform reference for injecting/absorbing active power into/from the grid, and both sinusoidal and resistive current injection have been compared. Finally, simulation and experimental results are reported in order to validate the proposed functionalities of the DG control strategies.

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Using Monte Carlo Simulation

Samonas

2015

Financial Forecasting, Analysis, and Modelling

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We present a Monte Carlo based method for the determination of errors associated with frequency spectra produced by the CLEAN transformation of Roberts et al. (1987). The Monte Carlo procedure utilises three different types of simulation involving a data stripping operation and the addition of white and red noise to the analysed time series. The simulations are tested on both synthetic and real data sets demonstrating the ability of the procedures to extract coherent information from time series characterised by the low signal-to-noise-ratio that is typical of many palaeoclimatic records. Significance levels derived for the Monte Carlo spectra of four time series from the Vostok ice core are utilised in the study of eccentricity components contained within the palaeoclimatic archive since ∼420 ka. Inversion of the Vostok frequency spectra into the time domain reveals the differing influence of orbital parameters in the palaeoclimatic proxy records as well as the relative magnitudes of the eccentricity components contained in the time series of greenhouse gas concentration, ice volume and local temperature.

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Impact of Smart Grids and Green Power Generation on Distribution Systems

Cited by 98 publications

References 4 publications

Analysis of ferroresonance effects in distribution networks with distributed source units

Analysis of ferroresonance effects in distribution networks with distributed source units

Inverter control strategy for DG systems based on the Conservative power theory

Using Monte Carlo Simulation

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