Low voltage ride through capability enhancement of wind turbine generator system during network disturbance

Muyeen, S. M.; Takahashi, Ryo; Murata, Toshiaki; Tamura, Junji; Ali, Mohd. Hasan; Matsumura, Yuichi; Kuwayama, A.; Matsumoto, Tad

doi:10.1049/iet-rpg:20070116

Cited by 96 publications

(50 citation statements)

References 12 publications

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“…It is assumed that the SC will enter the quenching state within 4 ms, and after the short-circuit fault is removed, the SC's recovery time is set as 0.5 s to cooperate with the reclosing. As shown in Figure 8, different FRT curves of a defined stay-connected time for IIDG are indicated [48,49]. From this figure, the FRT requirement differs from one standard to the other based on the countries' grid code.…”

Section: T T T R T T T R T = a T T B T T T A T T B T Tmentioning

confidence: 99%

“…From this figure, the FRT requirement differs from one standard to the other based on the countries' grid code. During the simulations, the Denmark code is selectively used, and in the case that the grid voltage drops to 20% of the nominal level, the IIDG should remain in the grid-connected state for a duration of 150 ms. As shown in Figure 8, different FRT curves of a defined stay-connected time for IIDG are indicated [48,49]. From this figure, the FRT requirement differs from one standard to the other based on the countries' grid code.…”

Section: T T T R T T T R T = a T T B T T T A T T B T Tmentioning

confidence: 99%

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Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads

Chen

et al. 2016

Energies

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Abstract:Concerning the development of a micro-grid integrated with multiple intermittent renewable energy resources, one of the main issues is related to the improvement of its robustness against short-circuit faults. In a sense, the superconducting fault current limiter (SFCL) can be regarded as a feasible approach to enhance the transient performance of a micro-grid under fault conditions. In this paper, the fault transient analysis of a micro-grid, including distributed generation, energy storage and power loads, is conducted, and regarding the application of one or more flux-coupling-type SFCLs in the micro-grid, an integrated technical evaluation method considering current-limiting performance, bus voltage stability and device cost is proposed. In order to assess the performance of the SFCLs and verify the effectiveness of the evaluation method, different fault cases of a 10-kV micro-grid with photovoltaic (PV), wind generator and energy storage are simulated in the MATLAB software. The results show that, the efficient use of the SFCLs for the micro-grid can contribute to reducing the fault current, improving the voltage sags and suppressing the frequency fluctuations. Moreover, there will be a compromise design to fully take advantage of the SFCL parameters, and thus, the transient performance of the micro-grid can be guaranteed.

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Section: T T T R T T T R T = a T T B T T T A T T B T Tmentioning

confidence: 99%

Section: T T T R T T T R T = a T T B T T T A T T B T Tmentioning

confidence: 99%

Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads

Chen

et al. 2016

Energies

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“…The control strategy of PMSG WT during the LVRT period should be further improved to ensure the DC-link voltage stability. Some DC-link protection circuits which are easy to implement in engineering maybe used, such as Energy Storage System (ESS), DC chopper, pitch angle control, etc., [20][21][22][23][24][25][26], as shown in Figure 12. As shown in Figure 12a, the ESS uses a super capacitor as an energy storage battery, so it can not only absorb the energy when the DC-link is in overvoltage, but also can release energy when the DC-link voltage is too low, thereby maintaining the DC-link voltage within a certain range.…”

Section: Pmsg Wt Hierarchical Control Strategymentioning

confidence: 99%

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Zhang

et al. 2015

Energies

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Abstract:The Voltage Source Converter-HVDC (VSC-HVDC) system applied to wind power generation can solve large scale wind farm grid-connection and long distance transmission problems. However, the low voltage ride through (LVRT) of the VSC-HVDC connected wind farm is a key technology issue that must be solved, and it is currently lacking an economic and effective solution. In this paper, a LVRT coordinated control strategy is proposed for the VSC-HVDC-based wind power system. In this strategy, the operation and control of VSC-HVDC and wind farm during the grid fault period is improved. The VSC-HVDC system not only provides reactive power support to the grid, but also effectively maintains the power balance and DC voltage stability by reducing wind-farm power output, without increasing the equipment investment. Correspondingly, to eliminate the influence on permanent magnet synchronous generator (PMSG)-based wind turbine (WT) systems, a hierarchical control strategy is designed. The speed and validity of the proposed LVRT coordinated control strategy and hierarchical control strategy were verified by MATLAB/Simulink simulations.

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“…A static synchronous compensator can be applied to the wind farm AC bus to compensate the reactive power and stabilize AC voltage [11][12][13]. Circuit configurations including a fault current limiter (FCL) and energy storage systems such as flywheel energy storage (FES) and superconducting magnetic energy storage (SMES) can also improve the transient stability of DFIGs [14][15][16], but their high installation cost offsets their good performance [17].…”

Section: Introductionmentioning

confidence: 99%

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

Yan

Zhang

et al. 2017

J. Mod. Power Syst. Clean Energy

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Transient stability of doubly-fed induction generators (DFIGs) is a major concern in both AC and DC grids, and DFIGs must stay connected for a time during grid faults according to the power grid requirements. For this purpose, this work proposes an overcurrent and overvoltage protective device (OCV-PD) to ensure that DCbased DFIG system can stay connected and operate well during the faults. Compared with a series dynamic braking resistor (SDBR), two aspects are improved. First, a twolevel control strategy and DC inductor circuit are used to ensure that the OCV-PD can limit the current impulse to protect DFIG system during an overcurrent fault. Second, the OCV-PD can protect system from overvoltage fault which a SDBR cannot do. Simulation results verify its validity and feasibility, finding that for overcurrent protection the OCV-PD outperforms a SDBR with an average decreased index of 3.29%, and for overvoltage protection it achieves an average index of 1.02%.

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Low voltage ride through capability enhancement of wind turbine generator system during network disturbance

Cited by 96 publications

References 12 publications

Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads

Technical Evaluation of Superconducting Fault Current Limiters Used in a Micro-Grid by Considering the Fault Characteristics of Distributed Generation, Energy Storage and Power Loads

Coordinated Control Strategies of VSC-HVDC-Based Wind Power Systems for Low Voltage Ride Through

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

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