An improved fault ride-through strategy for doubly fed induction generator-based wind turbines

Kasem, A.H.; El-Saadany, Ehab F.; El-Tamaly, H.H.; Wahab, Mohd Nadhir Ab

doi:10.1049/iet-rpg:20070092

Cited by 146 publications

(70 citation statements)

References 12 publications

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“…However, the disturbance used in [6] is not large enough to trigger the DFIG crowbar protection system which can lead to more severe voltage sag [7]. Since keeping the DFIG connected during transient grid faults is a gird code requirement, a number of published literature [8], [9] presented various strategies to ensure the continuous operation of DFIG. In [10], a decoupled fault ride through strategy to improve inertia response and reactive power capability of DFIG is proposed.…”

Section: Introductionmentioning

confidence: 99%

Impacts of High Penetration of DFIG Wind Turbines on Rotor Angle Stability of Power Systems

Edrah

Anaya‐Lara

2015

IEEE Trans. Sustain. Energy

226

126

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Section: Introductionmentioning

confidence: 99%

Impacts of High Penetration of DFIG Wind Turbines on Rotor Angle Stability of Power Systems

Edrah

Anaya‐Lara

2015

IEEE Trans. Sustain. Energy

226

126

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“…The selection of the DC link voltage (VDC) depends on the value of the L-L rms voltage at the grid side (Vg-LL). The relation is: VDC > 1.633 Vg-LL, as stated in [34]. In order to realize a transfer of active power generated by the PMSG to the grid, the capacitor voltage is varied during wind turbine operations [35].…”

Section: The Grid Side Voltage Source Converter-controllermentioning

confidence: 99%

Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review

2017

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Abstract:The inclusion of wind energy in a power system network is currently seeing a significant increase. However, this inclusion has resulted in degradation of the inertia response, which in turn seriously affects the stability of the power system's frequency. This problem can be solved by using an active power reserve to stabilize the frequency within an allowable limit in the event of a sudden load increment or the loss of generators. Active power reserves can be utilized via three approaches: (1) de-loading method (pitching or over-speeding) by a variable speed wind turbine (VSWT); (2) stored energy in the capacitors of voltage source converter-high voltage direct current (VSC-HVDC) transmission; and (3) coordination of frequency regulation between the offshore wind farms and the VSC-HVDC transmission. This paper reviews the solutions that can be used to overcome problems related to the frequency stability of grid-integrated offshore wind turbines. It also details the permanent magnet synchronous generator (PMSG) with full-scale back to back (B2B) converters, its corresponding control strategies, and a typical VSC-HVDC system with an associated control system. The control methods, both on the levels of a wind turbine and the VSC-HVDC system that participate in a system's primary frequency control and emulation inertia, are discussed.

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“…In the tidal current turbine control systems, the I d component is used to regulate power factor or terminal voltage while the I q component is used to regulate the torque. This overcurrent problem can be generally protected by a so-called crowbar protection, which can be activated to short circuit the rotor windings during the fault and will be kept off until the stator voltage is recovered [36,37].…”

Section: Effect Of the Grid Voltage Dipmentioning

confidence: 99%

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

Zhang

et al. 2017

Energies

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This paper analyses the effects of doubly fed induction generator (DFIG) tidal current turbines on a distribution grid under unbalanced voltage conditions of the grid. A dynamic model of an electrical power system under the unbalanced network is described in the paper, aiming to compare the system performance when connected with and without DFIG at the same location in a distribution grid. Extensive simulations of investigating the effect of DFIG tidal current turbine on stability of the distribution grid are performed, taking into account factors such as the power rating, the connection distance of the turbine and the grid voltage dip. The dynamic responses of the distribution system are examined, especially its ability to ride through fault events under unbalanced grid voltage conditions. The research has shown that DFIG tidal current turbines can provide a good damping performance and that modern DFIG tidal current power plants, equipped with power electronics and low-voltage ride-through capability, can stay connected to weak electrical grids even under the unbalanced voltage conditions, whilst not reducing system stability.

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An improved fault ride-through strategy for doubly fed induction generator-based wind turbines

Cited by 146 publications

References 12 publications

Impacts of High Penetration of DFIG Wind Turbines on Rotor Angle Stability of Power Systems

Impacts of High Penetration of DFIG Wind Turbines on Rotor Angle Stability of Power Systems

Frequency Regulation Strategies in Grid Integrated Offshore Wind Turbines via VSC-HVDC Technology: A Review

Effect of Doubly Fed Induction GeneratorTidal Current Turbines on Stability of a Distribution Grid under Unbalanced Voltage Conditions

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