Distributed control system for frequency control in a isolated wind system

Sebastián, R.; Quesada, J.

doi:10.1016/j.renene.2005.04.003

Cited by 76 publications

(44 citation statements)

References 13 publications

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“…Ranjeva and Kulkarni [36] proposed selling excess energy generated by the hybrid systems back to the grid. Sebastian and Quesada [37] recommended using dump load to consume any excess energy generated by their analyzed hybrid systems dominated by wind turbine as a renewable source. The dump load used in [37] consists of eight threephase resistors connected in series, and gate turn-off thyristor switches are used to connect and disconnect these resistances.…”

Section: Framework and Suggestions To Utilize Excess Energy-a Reviewmentioning

confidence: 99%

Effective utilization of excess energy in standalone hybrid renewable energy systems for improving comfort ability and reducing cost of energy: A review and analysis

Ismail

Moghavvemi

Mahlia

et al. 2015

Renewable and Sustainable Energy Reviews

107

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One of the features that characterize renewable energy sources is their variability and intermittency. Intermittency covers both the predictable and unpredictable variations of their power outputs and uncertainty in the power availability. To overcome the drawback of intermittency, special design considerations should be taken into account. These additional design considerations increases the overall cost of the renewable energy systems. Adding storage system and/or backup source to the renewable sources is one of the measures used to guarantee the continuity of power supply to the loads, and therefore improve the reliability of the renewable energy systems. The operation of renewable energy systems results in the creation of surplus energy, which is the energy generated by renewable energy systems, but is not consumed by the loads in standalone power systems. Effective utilization of this excess energy has the potential to decrease the cost of energy (COE) production by these hybrid renewable energy systems. In this paper, a review of the literature will be carried out in order to provide further insight into the approaches suggested in the literature on how to deal with the utilization of excess energy. Furthermore, various possible configurations of hybrid systems will be analyzed in detail for the effective utilization of the excess energy produced by hybrid systems. This is done in order to evaluate the effectiveness of utilization of excess energy by various means, especially for improving the living space comfort ability and decreasing the COE. Case studies will be carried out to demonstrate the proposed configurations for the effective utilization of the excess energy, and the results will be presented. b s t r a c tOne of the features that characterize renewable energy sources is their variability and intermittency. Intermittency covers both the predictable and unpredictable variations of their power outputs and uncertainty in the power availability. To overcome the drawback of intermittency, special design considerations should be taken into account. These additional design considerations increases the overall cost of the renewable energy systems. Adding storage system and/or backup source to the renewable sources is one of the measures used to guarantee the continuity of power supply to the loads, and therefore improve the reliability of the renewable energy systems. The operation of renewable energy systems results in the creation of surplus energy, which is the energy generated by renewable energy systems, but is not consumed by the loads in standalone power systems. Effective utilization of this excess energy has the potential to decrease the cost of energy (COE) production by these hybrid renewable energy systems. In this paper, a review of the literature will be carried out in order to provide further insight into the approaches suggested in the literature on how to deal with the utilization of excess energy. Furthermore, various possible configurations of hybrid systems will be analyzed...

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Section: Framework and Suggestions To Utilize Excess Energy-a Reviewmentioning

confidence: 99%

Effective utilization of excess energy in standalone hybrid renewable energy systems for improving comfort ability and reducing cost of energy: A review and analysis

Ismail

Moghavvemi

Mahlia

et al. 2015

Renewable and Sustainable Energy Reviews

107

View full text Add to dashboard Cite

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“…Studies presented in [18,19] modeled the battery energy storage as a DC voltage source in series with a current controlled inverter (CCI) in an islanded microgrid.…”

Section: DC Voltage Source In Series With a Resistormentioning

confidence: 99%

Comparison of dynamic models of battery energy storage for frequency regulation in power system

Adrees

Andami

Milanović

2016

2016 18th Mediterranean Electrotechnical Conference (MELECON)

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Abstract-The paper investigates the use of frequently discussed battery energy storage system (BESS) models for frequency regulation studies. Integration of a large number of renewable generation sources results in increased uncertainty in electric power generation, requiring, among the others, more frequency regulation services than before. The battery energy storage system models are compared and evaluated to assess their suitability for frequency regulation studies. The accuracy and complexity of BES models reported in the past are also discussed. Index Terms-Battery energy storage systems, Load frequency control (LFC), Battery models I. INTRODUCTIONhe operation of an electric power system is a complex process of forecasting the demand for electricity, and scheduling and operating a large number of power plants to meet that varying demand in real time. At every instant, electrical power generation should match power consumption to keep system frequency constant.The integration of renewable energy sources reduces the dependence on fossil fuels and greenhouse gas emission but increases variability and uncertainty in electric power generation. It is estimated that for every 10% wind penetration, a balancing power from other generation sources equivalent to 2% to 4% of the installed wind capacity is required for a stable power system operation [1]. Thus, with more penetration of intermittent renewables, the power system operation will become more complex and will require additional balancing power. As a result of this, there have been serious concerns over the safe and reliable operation of power systems with large penetration of renewable sources and reduction in conventional generation.Effective energy storage can match total generation to total load precisely on a second by second basis. Energy storage can facilitate load leveling for generators, load leveling for postponement of grid upgrade, frequency regulation, and power quality. Conventional generators may take several minutes or even hours to come online and will consume fuel

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“…With the control strategy suggested in Section III for DFIG, the frequency of the system is made independent from the loading condition and rotor speed of the DFIG. Hence, the system frequency cannot be used for control coordination purposes as suggested in [12]. Also, it is said that if a remote power system consists of only static loads, it is difficult to identify the frequency deviation of the system using active power imbalance and the voltage deviation from reactive power imbalance.…”

Section: Controls Associated With Dfigmentioning

confidence: 99%

“…The operation of a hybrid power system consisting of an induction generator based wind turbine system, an inverter assisted battery storage unit and a dummy load is discussed in [12]. However, the standalone operation of a DFIG based RAPS system has not received much research attention when compared to its grid connected operation.…”

Section: Introductionmentioning

confidence: 99%

Autonomous operation of wind-battery hybrid power system with maximum power extraction capability

Mendis

Muttaqi

Sayeef

et al. 2010

2010 International Conference on Power System Technology

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The hybrid operation of a remote area power system consisting of a Doubly Fed Induction Generator (DFIG) based wind turbine, a battery storage unit and a dummy load is investigated in this paper. The battery storage unit operates as a source or load, depending on the wind power output and loading conditions of the system. The battery storage is connected to the AC side of the wind energy system through a three phase inverter to supply both active and reactive power. A dummy load is also incorporated into the AC side of the system. The design criteria of the controllers for each component (ie. DFIG, battery storage system and dummy load) and an approach for control coordination of the entire system are presented in this paper. The suitability of the proposed control coordination strategy and individual system controllers are tested in relation to the system voltage, frequency and DC link stability of the DFIG under variable wind and changing load conditions. The maximum power extraction capability from wind is also achieved throughout the operation. Abstract-The hybrid operation of a remote area power system consisting of a Doubly Fed Induction Generator (DFIG) based wind turbine, a battery storage unit and a dummy load is investigated in this paper. The battery storage unit operates as a source or load, depending on the wind power output and loading conditions of the system. The battery storage is connected to the AC side of the wind energy system through a three phase inverter to supply both active and reactive power. A dummy load is also incorporated into the AC side of the system. The design criteria of the controllers for each component (ie. DFIG, battery storage system and dummy load) and an approach for control coordination of the entire system are presented in this paper. The suitability of the proposed control coordination strategy and individual system controllers are tested in relation to the system voltage, frequency and DC link stability of the DFIG under variable wind and changing load conditions. The maximum power extraction capability from wind is also achieved throughout the operation.Index Terms-Doubly fed induction generator, Battery storage system, Dummy load and Maximum power extraction.

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Distributed control system for frequency control in a isolated wind system

Cited by 76 publications

References 13 publications

Effective utilization of excess energy in standalone hybrid renewable energy systems for improving comfort ability and reducing cost of energy: A review and analysis

Effective utilization of excess energy in standalone hybrid renewable energy systems for improving comfort ability and reducing cost of energy: A review and analysis

Comparison of dynamic models of battery energy storage for frequency regulation in power system

Autonomous operation of wind-battery hybrid power system with maximum power extraction capability

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