On control and operating strategies for maximizing the controllability of the DFIG wind turbine during grid disturbance

Kihwele, Santos

doi:10.1109/elinfocom.2016.7563018

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Components of electrical system include the generator, electronic converters, harmonic filters on grid side, transformers, cables and common coupling point [45]. The control system components usually consist of intelligent devices responsible to maintain efficient and robust operation between electrical as well as mechanical systems [18], [46]- [49].…”

Section: A Owpp-grid Transmission Integrationmentioning

confidence: 99%

Offshore Wind Farm-Grid Integration: A Review on Infrastructure, Challenges, and Grid Solutions

et al. 2021

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Recently, the penetration of renewable energy sources (RESs) into electrical power systems is witnessing a large attention due to their inexhaustibility, environmental benefits, storage capabilities, lower maintenance and stronger economy, etc. Among these RESs, offshore wind power plants (OWPP) are ones of the most widespread power plants that have emerged with regard to being competitive with other energy technologies. However, the application of power electronic converters (PECs), offshore transmission lines and large substation transformers result in considerable power quality (PQ) issues in grid connected OWPP. Moreover, due to the installation of filters for each OWPP, some other challenges such as voltage and frequency stability arise. In this regard, various customs power devices along with integration control methodologies have been implemented to deal with stated issues. Furthermore, for a smooth and reliable operation of the system, each country established various grid codes. Although various mitigation schemes and related standards for OWPP are documented separately, a comprehensive review covering these aspects has not yet addressed in the literature. The objective of this study is to compare and relate prior as well as latest developments on PQ and stability challenges and their solutions. Low voltage ride through (LVRT) schemes and associated grid codes prevalent for the interconnection of OWPP based power grid have been deliberated. In addition, various PQ issues and mitigation options such as FACTS based filters, DFIG based adaptive and conventional control algorithms, ESS based methods and LVRT requirements have been summarized and compared. Finally, recommendations and future trends for PQ improvement are highlighted at the end.INDEX TERMS Frequency control, Grid codes, harmonics, LVRT, offshore wind energy, power quality, stability, voltage control.

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Section: A Owpp-grid Transmission Integrationmentioning

confidence: 99%

Offshore Wind Farm-Grid Integration: A Review on Infrastructure, Challenges, and Grid Solutions

et al. 2021

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“…The preferred solution is to fully utilize the reactive power capacity of the converters to inject the required reactive current. The existing studies have tried to separately use the RSC [20] and the GSC [21] for the reactive current support. These schemes are likely to cause violations to current constraints of the converters under deep voltage dips, as the required reactive current is proportional to the voltage drop depth.…”

Section: Introductionmentioning

confidence: 99%

Optimized Series Dynamic Braking Resistor for LVRT of Doubly-Fed Induction Generator With Uncertain Fault Scenarios

et al. 2022

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The terminal-connected series dynamic braking resistor (SDBR) is applied to assist the lowvoltage ride-through (LVRT) of the doubly-fed induction generator (DFIG). With the fault current and switch-in of the SDBR, the stator voltage oscillates, thus the constant stator voltage drop assumption is invalid and the effect of the converter current control is weakened with the changing voltage-oriented reference frame. In this paper, the xy frame of the point of common coupling is applied to the converter control to avoid oscillation of the reference frame. The analytical expression of fault current with the SDBR and constant converter current control is derived. To evaluate the LVRT effect, the analytical analysis of the LVRT transient is carried out. The resistance of the SDBR is optimized based on an index combining the capabilities of the DFIG to provide the active power support and damp the electromagnetic torque oscillation. The uncertainties of the fault scenario are considered in the optimization algorithm by applying the probabilistic method. Simulation results show that the improved LVRT effect of the DFIG is realized with optimization to the SDBR resistance and its switch-in criterion.INDEX TERMS Doubly-fed induction generator, low-voltage ride-through, series dynamic braking resistor, constant current control, analytical fault current expression, fault uncertainties, probabilistic evaluation.

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On control and operating strategies for maximizing the controllability of the DFIG wind turbine during grid disturbance

Cited by 2 publications

References 8 publications

Offshore Wind Farm-Grid Integration: A Review on Infrastructure, Challenges, and Grid Solutions

Offshore Wind Farm-Grid Integration: A Review on Infrastructure, Challenges, and Grid Solutions

Optimized Series Dynamic Braking Resistor for LVRT of Doubly-Fed Induction Generator With Uncertain Fault Scenarios

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