Improvement of transient stability of DFIG based wind generator by using of resistive solid state fault current limiter

Hossain, Emrad

doi:10.1016/j.asej.2017.03.014

Cited by 20 publications

(7 citation statements)

References 19 publications

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“…The doubly fed induction generator, commonly termed DFIG, is an induction generator with a wound rotor. The rotor is connected to the electrical grid by means of a back-to-back converter [24]. It only requires a partially rated converter, making it cheaper and more efficient than the synchronous generator.…”

Section: Research Motivationmentioning

confidence: 99%

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Model predictive control of a doubly fed induction generator

Reddy¹,

Saha²

2021

2021 IEEE PES/IAS PowerAfrica

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Section: Research Motivationmentioning

confidence: 99%

“…The DFIG is simply a WRIG equipped with a back-to-back converter from the grid to the rotor. The converter allows bidirectional power flow [24], [53], [54],. The converter is usually rated at 30% of the machines rated power [11].…”

Section: Types Of Wind Energy Conversion Systemsmentioning

confidence: 99%

Model predictive control of a doubly fed induction generator

Reddy¹,

Saha²

2021

2021 IEEE PES/IAS PowerAfrica

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“…In order to ensure a proper operation, a cooling equipment is necessary to control the temperature of the superconducting materials, which implies a high cost. In the second category, the semiconductor devices are controlled to inject an additional impedance in series with the system in order to restrict the transient overcurrents 27,31,32 . Certainly, the control of this type remains relatively easy, but it exposes several technical challenges.…”

Section: Proposed Ncfcl Technique During Voltage Dipsmentioning

confidence: 99%

Noncontrolled fault current limiter with reactive power support for transient stability improvement of DFIG ‐based variable speed wind generator during grid faults

Fdaili

Essadki

Kharchouf

et al. 2021

Int Trans Electr Energ Syst

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Summary According to the recent grid codes, wind turbine systems (WTSs) are required to stay connected to the grid during grid faults and provide reactive power to support the grid. Therefore, this paper proposes a noncontrolled fault current limiter (NCFCL) with reactive power support for transient stability improvement of DFIG‐based WTSs under grid faults. The proposed NCFCL is based on a nonsuperconducting reactor located in the rotor side. The NCFCL considerably limits the rotor and stator overcurrents and improves the transient stability of the doubly fed induction generator (DIFG). In addition, the proposed strategy reduces DC‐link overvoltage and electromagnetic torque oscillations and also provides reactive power to the grid to support the grid voltage recovery. In this way, the fault ride‐through (FRT) requirements of the latest grid codes can be fulfilled without affecting the DFIG stability in normal operation. Simulation studies using MATLAB/Simulink‐2019a are performed on a 2‐MW DFIG‐based WTS to confirm the effectiveness and feasibility of the proposed FRT strategy. Simulation results reveal that the proposed strategy provides better performance compared to the crowbar protection to improve the FRT capability.

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“…These facilities also have gained increasing attention due to increasing penetration of DG units especially wind turbine (WT) type to distribution networks. Application of FCLs has been aimed to realize desirable interaction between WTs and the networks considering different aspects such as low voltage ride through (LVRT) capability, [16][17][18][19][20][21][22][23] transient stability, [24][25][26][27][28] power quality, 29 and wind power smoothing. 30 In the following, a brief description about each aspect is presented:…”

Section: Introductionmentioning

confidence: 99%

“…These facilities also have gained increasing attention due to increasing penetration of DG units especially wind turbine (WT) type to distribution networks. Application of FCLs has been aimed to realize desirable interaction between WTs and the networks considering different aspects such as low voltage ride through (LVRT) capability, transient stability, power quality, and wind power smoothing . In the following, a brief description about each aspect is presented: In a previous study, it is confirmed that different types of FCLs is a suitable option for enhancing the LVRT capability of WTs, which is one of the main requirements of the grid codes for integration of WTs into power system. FCLs are able to improve transient stability of WTs.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of directional relay algorithms in presence of wind turbines and fault current limiters

Samet

Ghanbari

Ashtiani

et al. 2018

Int Trans Electr Energ Syst

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Summary Connection of distributed generations (DGs) to distribution networks changes their radial construction to mesh type and increases fault current level. In order to prevent over current relay tripping in case of out‐of‐zone faults, direction of faults must be determined. On the other hand, fault current limiters (FCLs) are a suitable technique to reduce the issue of fault current increasing. In this paper, it is confirmed that operation of FCLs affects voltage and current signals, drastically. Since fault direction is detected by directional relays using these signals, hence, FCLs can affect the performance of the relays. In the other hand, if the added DG is a wind turbine, it may affect the directional relays performance due to intricate fault behavior of wind turbines. To investigate the mentioned hypothesis, some of directional relaying algorithms are evaluated in presence of wind turbine and FCL.

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Improvement of transient stability of DFIG based wind generator by using of resistive solid state fault current limiter

Cited by 20 publications

References 19 publications

Model predictive control of a doubly fed induction generator

Model predictive control of a doubly fed induction generator

Noncontrolled fault current limiter with reactive power support for transient stability improvement of DFIG ‐based variable speed wind generator during grid faults

Evaluation of directional relay algorithms in presence of wind turbines and fault current limiters

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