Kinetic energy from distributed wind farms: Technical potential and implications

Rawn, Barry; Gibescu, Madeleine; Kling, W.L.

doi:10.1109/isgteurope.2010.5638972

Cited by 13 publications

(11 citation statements)

References 9 publications

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“…The deceleration method explained in the previous subsection could be an alternative to secure a power surge especially that a relatively higher amount of KE is stored at high WSs because the rotor is running at higher speed. The basic concept of over-speeding is explained in [32]. Virtual inertia (Hv) was proposed in [36] where the reference electrical torque is reduced by a certain value obtained from a transfer function in (3),…”

Section: Wtg Over-speeding To Provide Inertial Responsementioning

confidence: 99%

A review on frequency support provision by wind power plants: Current and future challenges

Attya¹,

Domínguez‐García

Anaya‐Lara³

2018

Renewable and Sustainable Energy Reviews

156

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The continuing increase of wind energy penetration in power systems, in combination with the retirement of conventional generation, raises new challenges for the maintenance of power system stability. This paper presents a comprehensive review of wind power plant capabilities to provide frequency support and the corresponding methods available in the published literature are thoroughly analysed and compared. The topic is covered from different perspectives giving a comprehensive overview of the work carried out in this field. In addition, the integration of energy storage technologies and dispatching of wind farms during frequency deviations are investigated. Finally, technical challenges, future research lines and general recommendations are provided.

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Section: Wtg Over-speeding To Provide Inertial Responsementioning

confidence: 99%

A review on frequency support provision by wind power plants: Current and future challenges

Attya¹,

Domínguez‐García

Anaya‐Lara³

2018

Renewable and Sustainable Energy Reviews

156

View full text Add to dashboard Cite

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“…Typically, the response consists of a fixed power injection signal, triggered once the frequency deviation exceeds a defined threshold, or, alternatively, a power setpoint trajectory is defined based on the actual frequency deviation, again triggered after a deadband is exceeded [99][100][101] . Several studies based on meteorological or power measurement data [102][103][104] indicate that the aggregate supply of rotational energy at a national scale can assist the frequency response, but it is not always available and changes with turbine operating point, as well as being dependent on turbine electrical and mechanical constraints and controller tuning 105,106 . Time delays associated with frequency measurement, activation deadbands and centralised farm communications may encourage local turbine controls.…”

Section: Frequency Control and Inertial Issuesmentioning

confidence: 99%

Technical Impacts of High Penetration Levels of Wind Power on Power System Stability

Flynn

Rather

Årdal

et al. 2019

Advances in Energy Systems

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With increasing penetrations of wind generation, based on power-electronic converters, power systems are transitioning away from well-understood synchronous generator based systems, with growing implications for their stability. Issues of concern will vary with system size, wind penetration level, geographical distribution and turbine type, network topology, electricity market structure, unit commitment procedures, and other factors. However, variable-speed wind turbines, both onshore and connected offshore through DC grids, offer many control opportunities to either replace or enhance existing capabilities. Achieving a complete understanding of future stability issues, and ensuring the effectiveness of new measures and policies, is an iterative procedure involving portfolio development and flexibility assessment, generation cost simulations, load flow and security analysis, in addition to the stability analysis itself, while being supported by field demonstrations and real-world model validation. Wind energy is being rapidly integrated into many power systems across the globe, with a total installed capacity of 370 GW, and with 51 GW added in 2014 alone 1. As the penetration of wind generation increases, the impact on power system dynamics is becoming increasingly apparent, and will become a more integral part of system planning and renewables integration studies 2. Historically, power systems have been based around large synchronous generators connected to a strongly meshed transmission network, with the dynamic characteristics of such systems being well understood. However, renewable generation, particularly in the form of wind and solar generation, is increasingly universally increased operational reserve requirement for wind power.

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“…determined according MPT [4]), makes its rotating parts store more kinetic energy. Thus, certain ratio from this kinetic energy is extracted using different control methods by decelerating the WT to certain threshold minimum rotational speed [5,6]. The impact of conventional generators replacement by WFs on overall system inertia was studied in [7].…”

Section: Socmentioning

confidence: 99%

Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms

Attya

2015

Journal of Renewable and Sustainable Energy

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The expected high penetration levels of wind energy in power systems require robust and practical solutions to maintain typical conventional systems performance. Wind farms (WFs) positive contribution in eliminating grid frequency deviations still a grey area, especially when they replace considerable conventional generation capacities. This paper offers a sizing algorithm to integrate storage battery banks (SBs) in WFs to provide feasible power support during frequency events. This algorithm determines the required rated power and capacity of each SB inside a WF according to several constrains, including wind speed characteristics at WF location. The size of the SB is based on a statistical study for the amounts of rejected wind power, and the events of low wind production. The offered operation algorithm controls the SB charging, discharging, and standby modes based on the acquisition of different dynamic variables, for example, WF output, load demand and storage cells' state of charge. The operation algorithm aims to mitigate frequency drops, rejected wind power and maintain the battery lifetime. Both algorithms are applied on a defined sector from a genuine conventional system merged with real WS chronological records at certain locations which are candidates to host WFs. Results reveal the positive influence of SB involvement on frequency excursions clearance, in addition, wasted wind energy is mitigated since wind turbines de-loading techniques are avoided and some rejected wind power is utilized to charge the installed SBs. Precise models are integrated through MATLAB and Simulink simulation environment.

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Kinetic energy from distributed wind farms: Technical potential and implications

Cited by 13 publications

References 9 publications

A review on frequency support provision by wind power plants: Current and future challenges

A review on frequency support provision by wind power plants: Current and future challenges

Technical Impacts of High Penetration Levels of Wind Power on Power System Stability

Integrating battery banks to wind farms for frequency support provision–capacity sizing and support algorithms

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