Inertial Contribution from Large Scale Variable-Speed Wind Turbines Connected to the GB Grid

Jose, Khadijat; Adeuyi, Oluwole Daniel; Liang, Jun; Ugalde‐Loo, Carlos E.

doi:10.1049/cp.2017.0064

Cited by 2 publications

(4 citation statements)

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“…It is assumed that the OWF operates at a wind speed of 10.5 m/s and maximum power point tracking (MPPT) is used to regulate the rotational speed of the generator to obtain the maximum power. More information on the detailed modelling of the PMSG-WT can be found in [23]. The OWF also contributes to support the frequency of the ac systems by inertia emulation.…”

Section: Wts Temporary Overproductionmentioning

confidence: 99%

“…1d. It involves a temporary step increase in the power/torque generated from the WT [19,23,24]. When the WTs detect a decline in system frequency, they reduce their speed to release 5-10% extra power from the stored kinetic energy in their rotating shafts.…”

Section: Wts Temporary Overproductionmentioning

confidence: 99%

“…The rotor side converter (RSC) regulates the torque (or power) from the PMSG while the network side converter (NSC) regulates the dc voltage. More information on the detailed modelling of the PMSG‐WT can be found in [23]. The OWF also contributes to support the frequency of the ac systems by inertia emulation.…”

Section: Wts Temporary Overproductionmentioning

confidence: 99%

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Auxiliary dead‐band controller for the coordination of fast frequency support from multi‐terminal HVDC grids and offshore wind farms

Jose

Joseph

Liang

et al. 2018

IET Renewable Power Generation

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High-voltage direct-current (HVDC) grids may provide fast frequency support to ac grids with the aid of supplementary control algorithms and synthetic inertia contribution from offshore wind farms. However, when all converters within the HVDC grid are fitted with these supplementary controllers, undesirable power flows and reduced power transfers may occur during a power imbalance. This is due to simultaneous frequency oscillations on the different ac systems connected to the HVDC grid arising during the support operation. To prevent this adverse effect, an auxiliary dead-band controller (ADC) is proposed in this study. The ADC modifies the dead-band set-point of the fast frequency controllers using measurements of the rate of change of frequency and frequency deviation. A four-terminal HVDC integrated with an offshore wind farm is modelled to analyse and study the effectiveness of three different supplementary fast frequency control algorithms. Results show that the proposed ADC scheme improves the performance of fast frequency control algorithms. For completeness, a small-signal stability analysis is carried out to confirm that a stable system operation is maintained.

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Section: Wts Temporary Overproductionmentioning

confidence: 99%

Section: Wts Temporary Overproductionmentioning

confidence: 99%

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Auxiliary dead‐band controller for the coordination of fast frequency support from multi‐terminal HVDC grids and offshore wind farms

Jose

Joseph

Liang

et al. 2018

IET Renewable Power Generation

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“…The levels of inertia present on the Great Britain (GB) power system have been declining due to the replacement of conventional synchronous generation with low-carbon technologies [1], [2]. Since these technologies are generally integrated to the system through power converters, they do not inherently contribute to the system inertia unless they are fitted with supplementary controllers [2]- [4]. The benefits that highvoltage direct-current (HVDC) technologies based on voltage source converters (VSCs) have over line commutated converters have positioned the VSC as a feasible topology to mitigate inertia issues [5].…”

Section: Introductionmentioning

confidence: 99%

Fast frequency support control in the GB power system using VSC-HVDC technology

Orellana

Matilla

Wang

et al. 2017

2017 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)

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A fast frequency support control scheme for voltage source converter based high-voltage direct-current (HVDC) links has been designed, simulated and experimentally implemented and validated. The effectiveness of the proposed scheme has been tested on simplified GB power system models with both averaged and switched converter models. System performance has been initially assessed using different software simulation platforms (PSCAD and MATLAB/Simulink). System validation has been carried out using an experimental test-rig. It is shown that simulation and experimental results agree on well when the fast frequency support provision is enabled. For completeness, the effectiveness of the control scheme has been tested for two contingency scenarios: (i) when a high-voltage alternating-current interlink in parallel with the HVDC link is disconnected, and (ii) for a substantial increase in system load.

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Inertial Contribution from Large Scale Variable-Speed Wind Turbines Connected to the GB Grid

Cited by 2 publications

References 0 publications

Auxiliary dead‐band controller for the coordination of fast frequency support from multi‐terminal HVDC grids and offshore wind farms

Auxiliary dead‐band controller for the coordination of fast frequency support from multi‐terminal HVDC grids and offshore wind farms

Fast frequency support control in the GB power system using VSC-HVDC technology

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