Contribution of DFIG wind turbines to system frequency control

Khaki, Bahman; Asgari, Mohammad Hossein; Sirjani, Reza; Mozdawar, A.

doi:10.1109/supergen.2009.5348161

Cited by 13 publications

(4 citation statements)

References 12 publications

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“…Then transient simulation is done base on these two figures and as we can see the results in figures (9,10) shows that the oscillation in system damped properly as a result of using appropriate controller parameters. As shown in figure (7) the location of eigenvalue associate with voltage of exciter is stable and unstable, both by changing in controller gain.…”

Section: Vmentioning

confidence: 98%

Optimizing controller's parameters for exciters and different wind turbines to enhance small signal and transient stability of power system

Khaki

2016

2016 18th Mediterranean Electrotechnical Conference (MELECON)

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The objective of this paper is to show the effects of proper design of controller's parameters on transient and small signal stability of the power system, in presence of Distributed Energy Resources (DER) for power system stability analysis issues. Differential and algebraic equations of various DGs and conventional synchronous generators are formulated together with dynamics of other elements, such as exciters and wind turbines (WT). Two types of Wind turbines used in these investigations, (1) Doubly Fed Induction Generator (DFIG) (2) constant speed wind turbine (CSWT). The results are applied for stability studies of a power system i.e. Modified IEEE 14 bus test system to demonstrate a typical application. Results shows that there is an appropriate impact on stability control of the power system with optimization of controllers for excitation system of conventional power system, and also when wind turbine integrated to system in the typical power system. Therefore if it will be possible to change different input variables or parameters of system model in theory or application, we can control oscillations, by controlling and monitoring either inter-area or intra-area modes, online. We show this online variation of parameters in simulation, by repeating the power flow and transient time domain analysis for several times, assuming different parameter values in each iteration in a loop, and then run another optimaization program to find the best values for parameters that damps the oscillations and enhances the stability of the proposed power system.

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Section: Vmentioning

confidence: 98%

Optimizing controller's parameters for exciters and different wind turbines to enhance small signal and transient stability of power system

Khaki

2016

2016 18th Mediterranean Electrotechnical Conference (MELECON)

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“…Inertia, in a comprehensive sense, denotes the kinetic energy stored in the rotating mass of the synchronous generators to compensate the frequency deviation from its nominal value when huge disturbances occur [35], [36]. Higher penetration rate of wind energy in power systems causes a significant diminution in the average power inertia as wind turbines are not able to respond to the frequency fluctuations [37], [38]. At the intra-minute prospect, ESSs are mainly utilized to provide operational reserves, e.g., pumped-storage hydropower, Compressed Air Energy Storage (CAES), Battery Energy Storage Systems (BESSs), and thermal storages deliver flexibility over extended periods.…”

Section: B Energy Storage Systemsmentioning

confidence: 99%

A Comprehensive Review on Power System Flexibility: Concept, Services, and Products

et al. 2022

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Massive proliferation of Variable Energy Resources (VERs) in modern power systems has posed a variety of challenges to the reliable operation of the power grid and has, at times, jeopardized the system flexibility. Flexibility is the system's ability to respond to and cope with the imbalances between supply and demand while managing the uncertainty and variability of VERs and maintaining the power system's security and reliability within the acceptable margins. Leveraging the system's available resources and capabilities, the system operators must take strategic actions to mitigate the impacts of VERs on the grid flexibility at a reasonable cost. The concept of flexibility is somewhat novel, which calls for profound studies and analyses to address different aspects of flexibility, but not limited to definition and characterization of standard metrics and indices to measure the power grid flexibility, flexibility-centred operation and planning models for the power grid, etc. This paper provides a comprehensive review of the state-of-the-art research on power system flexibility, including existing definitions and quantification measures, flexible resources, and flexibility products and services in electricity markets.

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“…Moreover, solar radiation is actually the sole source for fossil or renewable energy that we use today. Electricity from sunlight can be generated directly using photovoltaic solar cells, or indirectly as with concentrating solar power [46][47][48]. Consider another interesting aspect: PV solar cells convert the sun's radiation into DC power on which most of our appliances actually run [49].…”

Section: Open Acc J Envi Soi Sci Volume 3 -Issuementioning

confidence: 99%

Drivers for Future Energy Policy in The Developing World

Najjar

2019

OAJESS

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The wheels of technology are turned by the conversion of energy from one form into another. Thus, energy is a key element of sustainable development. Current trends in energy supply and use are generally unsustainable, especially when the environment is affected by the emitted green-house gases. These are expected to double by 2050, and increased oil demand will heighten concerns over the security of supplies. Hence, research on green favorites should continue vigorously. It is unfortunate that these have their own limitations. In such a complex situation, consideration of energy priorities in research and development should be organized carefully, and drivers for future energy policy should be considered very critically. This should give very careful foresight for the viable technologies, energy efficiency, renewable energy, oil shale, nuclear energy, hydrogen energy, in addition to any future innovations. Energy is of vital importance for the processes of production and manufacturing. Thus, a key element of sustainable development.

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Contribution of DFIG wind turbines to system frequency control

Cited by 13 publications

References 12 publications

Optimizing controller's parameters for exciters and different wind turbines to enhance small signal and transient stability of power system

Optimizing controller's parameters for exciters and different wind turbines to enhance small signal and transient stability of power system

A Comprehensive Review on Power System Flexibility: Concept, Services, and Products

Drivers for Future Energy Policy in The Developing World

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