A Coordinated Control Method for Leveling PV Output Power Fluctuations of PV–Diesel Hybrid Systems Connected to Isolated Power Utility

Datta, Manoj; Senjyu, Tomonobu; Yona, Atsushi; Funabashi, Toshihisa; Kim, Chul‐Hwan

doi:10.1109/tec.2008.2008870

Cited by 154 publications

(70 citation statements)

References 21 publications

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“…Equation (6) further indicates that V MC can be used to manipulate the power of NCL to follow the availability of generation. Such a "demand-following-supply" operation can help to regulate the DC voltage fluctuation induced by the RES at the PCC; (b) the operation of harmonic cancellation of H-DCES can be analyzed by using (7). D p can be used to modulate the current flowing through inductor L h .…”

Section: A Basic Operating Principlesmentioning

confidence: 99%

“…Reported technologies of alleviating the voltage fluctuation at PCC can be generally categorized into (a) implementation of battery energy storage system (BESS) [2]- [4], (b) generation side management (GSM) [5]- [7] and (c) demand side management (DSM) [8], [9]. The BESS is effective in buffering the intermittent generation of RES but is expensive and environmentally detrimental.…”

Section: Introductionmentioning

confidence: 99%

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Hybrid-DC Electric Springs for DC Voltage Regulation and Harmonic Cancellation in DC Microgrids

Wang

Yan

Tan

2018

IEEE Trans. Power Electron.

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NOMENCLATURE ∆dDifference between D p and D n ω Angular frequency of the harmonic power.Output capacitor of the H-DCES. C min Minimum required capacitance of C 1 and C 2 . d ml Lower margin of the duty ratio. Energy of capacitor C 1 . f HP F Cut-off frequency of the high-pass filter G HP F . f LP F Cut-off frequency of the low-pass filter G LP F . G HP F Transfer function of the high-pass filter.Transfer function of the proportional-integral controller. G P R Transfer function of the quasi-proportional-resonant controller. I coCurrent of the non-critical load R N C .i max cMaximum current of the DC-link capacitor whenCurrent disturbances in the DC grid.Current of the inductor L N C . I sm Current flowing through the H-DCES. I tb Current flowing through the battery.Output filter inductor for the harmonic current. Voltage of the capacitor C 1 . Z sys Impedance of the DC grid.In this paper, unless otherwise noted, the capitalized variables with lower-case subscripts denote the combination of DC and AC signals, while the all-uppercase and all-lowercase variables 0885-8993 (c)

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Section: A Basic Operating Principlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid-DC Electric Springs for DC Voltage Regulation and Harmonic Cancellation in DC Microgrids

Wang

Yan

Tan

2018

IEEE Trans. Power Electron.

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“…However, in [21], the interaction of the use of energy storage elements and renewable energy resources in the stability of microgrids was analyzed and simulated. Datta et al [22] studied this problem and presented a coordinated control scheme. For amending frequency fluctuations arising from renewable energy resources, Delille et al [23] studied the presence of energy storages in wind and solar systems.…”

Section: Introductionmentioning

confidence: 99%

Multitier decentralized control scheme using energy storage unit and load management in inverter-based AC microgrids

Nourollah¹,

Pirayesh²,

Fripp³

2017

Turk J Elec Eng & Comp Sci

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Abstract:The use of renewable energies, such as wind and solar, is rising in microgrids. However, because of their intermittent nature, achieving a stable system in spite of the fluctuations of generation and demand is very difficult.Aiming to increase the stability margin of AC islanded microgrids comprising nondeterministic resources, properly share real power (P), and keep the network frequency ( f ) at nominal value, this study exploits the presence of energy storage units (ESUs) along with a load-shedding scheme. To this end, this study proposes a multitier decentralized control strategy that is based on frequency and includes three control schemes, distributed generation unit (DGU) control, ESU control, and local loads control (LLC). These controllers operate simultaneously. The DGU controller shares the loads among DGUs in accordance with the frequency droop method. On the other hand, the ESU controller controls the production of ESUs and also the LLCs manage the loads and dump-load of the microgrid. This method ensures the proper operation of AC microgrids that comprise intermittent resources under stand-alone conditions and despite numerous events. The time responses of P and f prove the high performance of the method. The simulations are performed and coded in m-file of MATLAB.

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“…The results demonstrate the need to use the sizing methodology and the impact of the battery storage on the total hybrid system cost. PV-wind-diesel-battery (PWDB) hybrid power systems offer great opportunities and are considered as a cost-effective way to meet energy requirements of isolated locations and areas not easily accessible for grid connection (Datta et al, 2009). In Central Africa, in countries such as the Congo, many mines are operating on DGs and RE hybrid systems can be useful in such industrial applications.…”

Section: Introductionmentioning

confidence: 99%

Energy dispatch strategy for a photovoltaic–wind–diesel–battery hybrid power system

2014

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In this paper, an energy dispatch model that satisfies the load demand, taking into account the intermittent nature of the solar and wind energy sources and variations in demand, is presented for a solar photovoltaic-wind-diesel hybrid power supply system. Model predictive control techniques are applied in the management and control of such a power supply system. The emphasis in this work is on the co-ordinated management of energy flow from the battery, wind, photovoltaic and diesel generators when the system is subject to disturbances. The results show that the advantages of the approach become apparent in its capability to attenuate and its robustness against uncertainties and external disturbances. When compared with the open loop model, the closed-loop model is shown to be more superior owing to its ability to predict future system behavior and compute appropriate corrective control actions required to meet variations in demand and radiation. Diesel consumption is generally shown to be more in winter than in summer. This work thus presents a more practical solution to the energy dispatch problem. Keywords: energy management, disturbance, intermittent nature, hybrid energy system, optimization scheme

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A Coordinated Control Method for Leveling PV Output Power Fluctuations of PV–Diesel Hybrid Systems Connected to Isolated Power Utility

Cited by 154 publications

References 21 publications

Hybrid-DC Electric Springs for DC Voltage Regulation and Harmonic Cancellation in DC Microgrids

Hybrid-DC Electric Springs for DC Voltage Regulation and Harmonic Cancellation in DC Microgrids

Multitier decentralized control scheme using energy storage unit and load management in inverter-based AC microgrids

Energy dispatch strategy for a photovoltaic–wind–diesel–battery hybrid power system

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