A New Control Method to Mitigate Power Fluctuations for Grid Integrated PV/Wind Hybrid Power System Using Ultracapacitors

Jayalakshmi, N. S.; Gaonkar, D. N.

doi:10.1515/ijeeps-2015-0183

Cited by 15 publications

(10 citation statements)

References 15 publications

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“…In this regard, the authors in Reference [5] developed a control scheme for a hybrid storage system comprising SC-batteries, by which the power fluctuations produced by wind farms can be reduced, thus improving the lifespan of batteries. Similarly, Jayalakshmi et al developed, in Reference [6], a grid-side control for peak reduction of hybrid renewable systems formed by photovoltaic (PV) panels and wind turbines (WTs). In this case, the power smoothing was achieved by optimally controlling a storage system formed by SC banks.…”

Section: Related Workmentioning

confidence: 99%

A New Methodology for Smoothing Power Peaks Produced by Electricity Demand and a Hydrokinetic Turbine for a Household Load on Grid Using Supercapacitors

Arévalo

Tostado‐Véliz

2021

WEVJ

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The power fluctuations produced by electric vehicles represent a drawback in large-scale residential applications. In addition to that, short power peaks could pose a risk to the stability of the electrical grid. For this reason, this study presents a feasibility analysis for a residential system composed of electric vehicle chargers. The objective is focused on smoothing the power fluctuations produced by the charge by a supercapacitor through adequate energy control; in addition, self-consumption is analyzed. Data sampling intervals are also analyzed; the modeling was performed in Matlab software. The results show that there are errors of up to 9% if the data are measured at different sampling intervals. On the other hand, if the supercapacitor is considered, the system saves 59.87% of the energy purchased from the utility grid per day, and the self-consumption of electricity by prosumers can increase up to 73%. Finally, the hydrokinetic/supercapacitor/grid system would save up to 489.1 USD/year in the cost of purchasing electricity from the grid and would increase by 492.75 USD/year for the sale electricity.

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Section: Related Workmentioning

confidence: 99%

A New Methodology for Smoothing Power Peaks Produced by Electricity Demand and a Hydrokinetic Turbine for a Household Load on Grid Using Supercapacitors

Arévalo

Tostado‐Véliz

2021

WEVJ

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“…A Kalman filter-based power smoothing method for a PV and wind-based power system with a battery is proposed in [11]. An ultracapacitor based power smoothing technique for a grid-tied PV/wind hybrid system is presented in [12]. The average of the total power produced by renewable sources is used to compute the reference power.…”

Section: Introductionmentioning

confidence: 99%

Archives of Electrical Engineering

Jayalakshmi,

Gaonkar,

Karthik

et al. 2020

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Wind and solar radiation are intermittent with stochastic fluctuations, which can influence the stability of operation of the hybrid system in the grid integrated mode of operation. In this research work, a smoothing control method for mitigating output power variations for a grid integrated wind/PV hybrid system using a battery and electric double layer capacitor (EDLC) is investigated. The power fluctuations of the hybrid system are absorbed by a battery and EDLC during wide variations in power generated from the solar and wind system, subsequently, the power supplied to the grid is smoothened. This makes higher penetration and incorporation of renewable energy resources to the utility system possible. The control strategy of the inverter is realized to inject the power to the utility system with the unity power factor and a constant DC bus voltage. Both photovoltaic (PV) and wind systems are controlled for extracting maximum output power. In order to observe the performance of the hybrid system under practical situations in smoothing the output power fluctuations, one-day practical site wind velocity and irradiation data are considered. The dynamic modeling and effectiveness of this control method 0

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“…However, these techniques are constrained by the rating of the RES inverter and they could reduce the lifetime of the RES inverter [11][12][13]. Other techniques for fluctuation mitigation are based on employing various components in distribution systems, such as storage systems [14][15][16][17][18][19][20][21][22], distributed generation [23,24], capacitors [25,26], and dump loads [7].…”

Section: Introductionmentioning

confidence: 99%

Voltage fluctuation smoothing in distribution systems with RES considering degradation and charging plan of EV batteries

Ali

Raisz

Mahmoud

2019

Electric Power Systems Research

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Recently, the use of renewable energy sources (RES) and electric vehicles (EVs) has been rapidly increased worldwide. As a result of the highly fluctuating nature of RES, the charging and discharging rates of EVs significantly have to be increased, and so the lifespan of EV batteries decreases. In this paper, an optimization-based method is proposed to smooth voltage fluctuations due to various RES types by optimally controlling the charging and discharging power of EVs and the reactive power of the RES inverters. To extend the lifespan of the EV battery, EV power fluctuations and their minimum preset state of charge (SOC) are considered in the proposed optimization model. For this purpose, a new multi-objective function is formulated, including 1) voltage fluctuations, 2) EV power fluctuations, and 3) the deviation of SOC of EVs from their minimum desired level. The use of the hull moving average (HMA) is proposed to mitigate voltage fluctuations, which eliminates the lag problem of the widely used moving average methods. The gravitational search algorithm (GSA) is utilized to accurately solve the optimization model. The simulation results demonstrate the effectiveness of the proposed method to smooth voltage fluctuations while considering degradation and charging plan of EV batteries.

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A New Control Method to Mitigate Power Fluctuations for Grid Integrated PV/Wind Hybrid Power System Using Ultracapacitors

Cited by 15 publications

References 15 publications

A New Methodology for Smoothing Power Peaks Produced by Electricity Demand and a Hydrokinetic Turbine for a Household Load on Grid Using Supercapacitors

A New Methodology for Smoothing Power Peaks Produced by Electricity Demand and a Hydrokinetic Turbine for a Household Load on Grid Using Supercapacitors

Archives of Electrical Engineering

Voltage fluctuation smoothing in distribution systems with RES considering degradation and charging plan of EV batteries

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