Smart AC grid integrating dispersed small hydropower sources

Măgureanu, R.; Albu, Mihaela; Bostan, V.; Dumitrescu, Ana-Maria; Dimu, G.; Popa, Florica; Rotaru, Mihai

doi:10.1109/optim.2008.4602431

Cited by 7 publications

(4 citation statements)

References 6 publications

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“…A first-order low-pass filter is applied here and its transfer function is 1 ( ) 1 s T s T s = + (6) where T s is called filter time constant. The bigger T s is, the better performance the filter has, which leads to heavier burden to storage and lighter burden to hydro.…”

Section: B Power Distributormentioning

confidence: 99%

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Coordinating control for a wind-hydro-storage system considering the constraint of SOC

Chen

Mei

2014

IEEE PES Innovative Smart Grid Technologies, Europe

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In order to effectively utilize wind, water and other renewable energy, a wind-hydro-storage system is proposed in this paper to smooth the power fluctuations of Point of Common Coupling (PCC). The topology and control objective of the system are firstly presented and the control models of hydro and storage units are then described by means of classic transfer functions. Further, coordinating control strategy of the system is discussed in detail to allocate power reasonably through a power distributor and an output limit coordinator. Considering the negative effect of State of Charge (SOC) limit exceeding in storage unit, a power corrector based on fuzzy control method is adopted to ensure safe and stable operation of storage unit and improve smoothing effect of the system. The effectiveness of proposed control strategy is verified by case study in MATLAB

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Section: B Power Distributormentioning

confidence: 99%

“…Hydro power is a kind of high-energy-density, low-cost clean power [6]. The utilization of hydro power to achieve power fluctuation smoothing is of great research value.…”

Section: Introductionmentioning

confidence: 99%

Coordinating control for a wind-hydro-storage system considering the constraint of SOC

Chen

Mei

2014

IEEE PES Innovative Smart Grid Technologies, Europe

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“…The efficiency of hydro machines is increased as there is a large variation in water flow, so operation at variable speed is considered such that the connection to the 50 Hz power grid can be done using an AC/DC-DC/AC interface. The purpose of a reactive power and a harmonic voltage compensation and transfer of energy from generator to grid is achieved by the use of power electronic based interface [12].…”

Section: Fig-1 Micro Grid-a Schematic Diagrammentioning

confidence: 99%

Microgrid: A Review

Singh¹

2014

IJRET

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The demand for high quality electricity and growing electricity consumption has been caused by increasing electrification of daily life causes and the rising number of sensitive or critical loads. Due to the rapid increase in global energy consumption and the diminishing of fossil fuels, the customer demand for new generation capacities and efficient energy production, delivery and utilization keeps rising. The micro grid concept has the potential to solve major problems arising from large penetration of distributed generation in distribution systems. A proper control strategy should be implemented for a successful operation of a micro grid. Different load models can be simulated and analyzed using MATLAB and PSCAD software. In this paper, the work done in the field of Micro Grid has been reviewed.

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“…It comprises o f t he induction machine and a front-end converter [16]. This converter can be a two level one like in the previous case or a three level one for higher voltage generators (see Fig.…”

Section: The Operation Of Synchronous Generators Connected To a DCmentioning

confidence: 99%

Synchronous and induction generators operating at variable speed in DC networks

Măgureanu

Albu

Bostan

et al. 2008

2008 18th International Conference on Electrical Machines

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Most of the turbine-generator g roups using renewables as primary energy (small hydro plants or wind farms) do not optimally provide the electric power when they have to operate at constant speed in order to supply the electric energy at the rated frequency. In this paper a solution that enables such a generator to operate at highest possible efficiency, i.e. at variable speed, is presented. An ac-dc-ac interface is developed in order to facilitate the integration into distribution networks. For several generators case, the PCC is a DC bus bar which allows a more stable operation and an easier droop control, converting a typical MIMO system into a SISO one.

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Smart AC grid integrating dispersed small hydropower sources

Cited by 7 publications

References 6 publications

Coordinating control for a wind-hydro-storage system considering the constraint of SOC

Coordinating control for a wind-hydro-storage system considering the constraint of SOC

Microgrid: A Review

Synchronous and induction generators operating at variable speed in DC networks

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