Wind turbine contribution in frequency drop mitigation – modified operation and estimating released supportive energy

Attya, Ayman; Hartkopf, Thomas

doi:10.1049/iet-gtd.2013.0512

Cited by 58 publications

(41 citation statements)

References 28 publications

(24 reference statements)

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“…The de-loading ratio (DF) is 15%, and the same WTG type is examined in the two locations. In Method 2, no single equation describes the provided power surge, because it has three different possibilities according to the prevailing WS as illustrated in Figure 1 [4].…”

Section: ) Methods 1 -Wtg Decelerationmentioning

confidence: 99%

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Novel metrics to quantify the impacts of frequency support provision methods by wind power

Attya

Anaya‐Lara

Leithead

2016

2016 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)

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Abstract-This paper introduces two novel metrics to judge the capability and influence of wind power to provide virtual inertia response (i.e. frequency support). The first metric considers the generation unit (i.e. wind turbine generator (WTG)/wind farm (WF) vs. synchronous generator). This metric is applied to compare between three different methods of provision of frequency support. The second metric assess the improvement or hindering in frequency response at the point of common coupling (PCC) between a WF and a synchronous area. This metric is critical especially to WFs that are connected via High Voltage Direct Current (HVDC) or Low-frequency AC links. Both metrics are universal so that they could be applied to any support method, and any power system. The first metric is applied to assess the virtual inertia response of an offshore WF, which is considered as a power plant along with the HVDC transmission link. Results assure the positive impact of the provision of frequency support by wind power. This impact is quantified could be used to tune frequency support controllers, and optimize system planning. It is verified that no obstacles are implied by the HVDC link to integrating frequency support methods, as the WF dominates the support process.

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Section: ) Methods 1 -Wtg Decelerationmentioning

confidence: 99%

“…The concepts of emulated KE extraction (called from now on Method 1) and WTG de-loading (Applied in Method 2 as explained later) were developed in [3,4] respectively. These two methods provide frequency support directly through the WTG.…”

Section: Introductionmentioning

confidence: 99%

Novel metrics to quantify the impacts of frequency support provision methods by wind power

Attya

Anaya‐Lara

Leithead

2016

2016 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)

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“…The pitch de-loading is deactivated if the incident WS approaches the rated WS of the WTG to curtail wasted energy due to deloading. It is of note that, pitching is activated by default at high WSs to maintain the WTG output and rotor speed within safe limits, however at frequency events, pitch angle could be exceptionally reduced to allow a slight overload of the WTG for a short predefined duration, which relies on the WTG specifications to avoid excessive heating or any sort of damage based on the manufacturer instructions [14].…”

Section: A Pitch De-loadingmentioning

confidence: 99%

Insights on the Provision of Frequency Support by Wind Power and the Impact on Energy Systems

Attya

Domínguez‐García

2018

IEEE Trans. Sustain. Energy

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“…The inertia control temporarily releases the stored kinetic energy in the rotating mass to arrest the frequency drop through the initial stage . However, the power reserve control releases the reserved power in a WTG to provide steady‐state power support in the frequency events . The latter provides a better contribution than the former; however, the de‐loading control is required.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8] However, the power reserve control releases the reserved power in a WTG to provide steady-state power support in the frequency events. 9,10 The latter provides a better contribution than the former; however, the de-loading control is required. The deloading techniques can be classified into two main categories: pitch and overspeeding controls.…”

Section: Introductionmentioning

confidence: 99%

Coordinated control of the conventional units, wind power, and battery energy storage system for effective support in the frequency regulation service

Abouzeid

Guo

Zhang

2019

Int Trans Electr Energ Syst

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Summary This paper presents a coordinated control strategy for the participation of the variable speed wind turbine generators (VSWTGs) and battery storage system (BSS) in the frequency regulation service. Firstly, an operating strategy based on a combination of dynamic de‐loading control and rotor kinetic inertia control (RKC) has been developed to involve the WTGs to provide frequency regulation service. The proposed strategy does not necessitate any wind speed measurements and effective for all wind speed ranges. Secondly, a battery storage system is managed besides the wind system in the manner that can provide effective frequency regulation while maintaining both battery's state of charge and the turbine's kinetic energy within their acceptable limits. A multisource power system with high‐wind power integration of 30% has been considered. The nonlinearities such as generation rate constraints (GRC) and generation dead band (GDB) have been considered to make it more realistic power system. Furthermore, to consider the entire interactions between different system units, full coordinated control is presented. The results confirm the necessity of the power coordination to improve the overall system dynamic behavior in terms of frequency response, turbine stability, and the battery's state of charge (SOC) profile.

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Wind turbine contribution in frequency drop mitigation – modified operation and estimating released supportive energy

Cited by 58 publications

References 28 publications

Novel metrics to quantify the impacts of frequency support provision methods by wind power

Novel metrics to quantify the impacts of frequency support provision methods by wind power

Insights on the Provision of Frequency Support by Wind Power and the Impact on Energy Systems

Coordinated control of the conventional units, wind power, and battery energy storage system for effective support in the frequency regulation service

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