Fault Ride-Through Capability Enhancement of DFIG-Based Wind Turbine With a Flux-Coupling-Type SFCL Employed at Different Locations

Chen, Lei; Deng, Changhong; Zheng, Feng; Li, Shichun; Liu, Yang; Liao, Yun

doi:10.1109/tasc.2014.2373511

Cited by 75 publications

(43 citation statements)

References 26 publications

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“…From this figure, the series and parallel connections among the coupling windings, SC, MOA and Scs become more intuitive. Figure 3a shows the schematic configuration of the flux-coupling-type SFCL [55][56][57]. This SFCL is mainly composed of a coupling transformer (CT), a controlled switch (CS) S cs , a superconducting coil (SC) and a metal oxide arrester (MOA).…”

Section: Theoretical Presentation Of a Grid-connected Photovoltaic Gementioning

confidence: 99%

Coordinated Control of Superconducting Fault Current Limiter and Superconducting Magnetic Energy Storage for Transient Performance Enhancement of Grid-Connected Photovoltaic Generation System

Chen

Yang

et al. 2017

Energies

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Abstract:In regard to the rapid development of renewable energy sources, more and more photovoltaic (PV) generation systems have been connected to main power networks, and it is critical to enhance their transient performance under short-circuit faults conditions. This paper proposes and studies the coordinated control of a flux-coupling-type superconducting fault current limiter (SFCL) and a superconducting magnetic energy storage (SMES), to improve the fault ride through (FRT) capability and smooth the power fluctuation of a grid-connected PV generation system. Theoretical analyses of the device structure, operating principle and control strategy are conducted, and a detailed simulation model of 100 kW class PV generation system is built in MATLAB/SIMULINK. During the simulations of the symmetrical and asymmetrical faults, the maximum power point tracking (MPPT) control is disabled, and four different cases including without auxiliary, with SFCL, with SMES, and with SFCL-SMES, are compared. From the demonstrated results, the combination of without MPPT and with SFCL-SMES can more efficiently improve the point of common coupling (PCC) voltage sag, inhibit the DC-link overvoltage and alleviate the power fluctuation. Finally, a preliminary parameter optimization method is suggested for the SFCL and the SMES, and it is helpful to promote their future application in the real PV projects.

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Section: Theoretical Presentation Of a Grid-connected Photovoltaic Gementioning

confidence: 99%

Coordinated Control of Superconducting Fault Current Limiter and Superconducting Magnetic Energy Storage for Transient Performance Enhancement of Grid-Connected Photovoltaic Generation System

Chen

Yang

et al. 2017

Energies

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“…The main connection scheme of the flux-coupling-type SFCL is shown in Figure 1a [32]. This SFCL mainly consists of a coupling transformer (CT), a controlled switch Scs, a metal oxide arrester (MOA) Rmoa and a superconducting coil (SC).…”

Section: Presentation Of the Flux-coupling-type Sfclmentioning

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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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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“…Since the flux between the CT's two windings can no longer cancel out each other, the non-inductive coupling will be destroyed, and the superconducting coil will quench to its high-resistance state. Right now the SFCL will play the role, and its current-limiting impedance can be calculated as Z SFCL = [R SC + jxL 2 + (knxL 2 ) 2 /(R moa + n 2 jxL 2 )] [15].…”

Section: Structural Principle Of the Modified Flux-coupling Type Sfclmentioning

confidence: 99%

Application of a modified flux-coupling type superconducting fault current limiter to transient performance enhancement of micro-grid

Chen

Zheng

Deng

et al. 2015

Physica C: Superconductivity and its Applications

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Fault Ride-Through Capability Enhancement of DFIG-Based Wind Turbine With a Flux-Coupling-Type SFCL Employed at Different Locations

Cited by 75 publications

References 26 publications

Coordinated Control of Superconducting Fault Current Limiter and Superconducting Magnetic Energy Storage for Transient Performance Enhancement of Grid-Connected Photovoltaic Generation System

Coordinated Control of Superconducting Fault Current Limiter and Superconducting Magnetic Energy Storage for Transient Performance Enhancement of Grid-Connected Photovoltaic Generation System

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

Application of a modified flux-coupling type superconducting fault current limiter to transient performance enhancement of micro-grid

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