Flexible fault ride through strategy for wind farm clusters in power systems with high wind power penetration

Wang, Songyan; Chen, Ning; Yu, Daren; Foley, Aoife; Zhu, Lingzhi; Li, Kang; Yu, Jie

doi:10.1016/j.enconman.2015.01.022

Cited by 39 publications

(20 citation statements)

References 23 publications

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“…Several other alternative design concepts can also be beneficial for large scale designs, such as: segmented, smart, and folding wind turbine blades for mass reduction and easier transportation [76][77][78], new control algorithms for load alleviation and better power regulation [79][80][81][82], and novel grid integration algorithms for better and higher penetration [83][84][85].…”

Section: Challenges Of Larger Wind Turbinesmentioning

confidence: 98%

Multidisciplinary design optimization of large wind turbines—Technical, economic, and design challenges

Ashuri

Zaaijer

Martins

et al. 2016

Energy Conversion and Management

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a b s t r a c tWind energy has experienced a continuous cost reduction in the last decades. A popular cost reduction technique is to increase the rated power of the wind turbine by making it larger. However, it is not clear whether further upscaling of the existing wind turbines beyond the 5-7 MW range is technically feasible and economically attractive. To address this question, this study uses 5, 10, and 20 MW wind turbines that are developed using multidisciplinary design optimization as upscaling data points. These wind turbines are upwind, 3-bladed, pitch-regulated, variable-speed machines with a tubular tower. Based on the design data and properties of these wind turbines, scaling trends such as loading, mass, and cost are developed. These trends are used to study the technical and economical aspects of upscaling and its impact on the design and cost. The results of this research show the technical feasibility of the existing wind turbines up to 20 MW, but the design of such an upscaled machine is cost prohibitive. Mass increase of the rotor is identified as a main design challenge to overcome. The results of this research support the development of alternative lightweight materials and design concepts such as a two-bladed downwind design for upscaling to remain a cost effective solution for future wind turbines.

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Section: Challenges Of Larger Wind Turbinesmentioning

confidence: 98%

Multidisciplinary design optimization of large wind turbines—Technical, economic, and design challenges

Ashuri

Zaaijer

Martins

et al. 2016

Energy Conversion and Management

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“…In a modern DFIG-based wind turbine, the application of a crowbar is a common practice to protect the RSC against high over-currents [5,6]. The crowbar is a protection device, which is installed between the rotor windings and the RSC.…”

Section: Brief Review Of Fault Ride-through Behaviour Of the Dfigmentioning

confidence: 99%

“…The most common method is to employ crowbar protection and protect the back-to-back converters during low voltage [5,6]. This method changes the DFIG to a squirrel cage induction generator.…”

Section: Introductionmentioning

confidence: 99%

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

Naderi

Negnevitsky

Jalilian

et al. 2017

International Journal of Electrical Power & Energy Systems

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, "Low voltage ride-through enhancement of DFIGbased wind turbine using DC link switchable resistive type fault current limiter," International Journal of Electrical Power and Energy Systems, vol. 86, pp. 104-119, 2017. Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter Abstract Doubly-fed induction generator (DFIG)-based wind turbines utilise small-scale voltage sourced converters with a limited overcurrent withstand capability, which makes the DFIG-based wind turbines very vulnerable to grid faults. Often, modern DFIG systems employ a crowbar protection at the rotor circuit to protect the rotor side converter (RSC) during grid faults. This method converts the DFIG to a squirrel cage induction generator, which does not comply with the new grid codes. The recent grid codes need wind turbines to stay connected to the utility grid during and after power system faults, especially in high penetration level of wind power. Furthermore, the crowbar switch is expensive. This paper proposes a novel DC-link switchable resistive-type fault current limiter (SRFCL) to improve the LVRT capability of the DFIG. The proposed SRFCL is employed in the DC side of the RSC. The SRFCL solves crowbar protection activation problems and eliminates subsequent complications in the DFIG system. The proposed SRFCL does not have any significant impact on the overall performance of the DFIG during normal operation. Whenever the fault, whether symmetrical or asymmetrical, occurs, the SRFCL not only limits rotor over-currents but also prevents rotor speed acceleration and restricts high torque oscillations even during zero grid voltage, as recommended by some grid codes. To prove the effective operation of the SRFCL on the RSC fault current limitation, analytical analysis is performed in each switching interval. The proposed approach is compared with the crowbar-based protection method. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach. Simulation studies are carried out in PSCAD/EMTDC software. In addition, a prototype is provided to demonstrate the main concept of the proposed approach.

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“…Therefore, fault current characteristics of DFIG during slight voltage dips [15] are studied. In [16], an adaptive fault ride through strategy is proposed for systems with high penetration of wind and maximum power restrictions on the wind farms. In [17], Superconducting Fault Current Limiter, which has the competence to limit the fault current and protect the equipments from damage is proposed.…”

Section: Enhanced Crowbar Protection For Frt Capability Of Wind Genermentioning

confidence: 99%

Enhanced Crowbar Protection for Fault Ride through Capability of Wind Generation Systems

Kalyani¹,

Roselyn²,

Nithya³

et al. 2016

IJPEDS

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Due to increasing demand in power, the integration of renewable sources like wind generation into power system is gaining much importance nowadays. The heavy penetration of wind power into the power system leads to many integration issues mainly due to the intermittent nature of the wind and the desirability for variable speed operation of the generators. As the wind power generation depends on the wind speed, its integration into the grid has noticeable influence on the system stability and becomes an important issue especially when a fault occurs on the grid. The protective disconnection of a large amount of wind power during a fault will be an unacceptable consequence and threatens the power system stability. With the increasing use of wind turbines employing Doubly Fed Induction Generator (DFIG) technology, it becomes a necessity to investigate their behavior during grid faults and support them with fault ride through capability. This paper presents the modeling and simulation of a doubly fed induction generator according to grid code compatibility driven by a wind turbine connected to the grid. This paper analyses the voltage sag due to a three-phase fault in the wind connected grid. A control strategy including a crowbar circuit has been developed in MATLAB/SIMULINK to bypass the rotor over currents during grid fault to enhance the fault ride through capability and to maintain system stability. Simulation results show the effectiveness of the proposed control strategies in DFIG based grid connected wind turbine system.

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Flexible fault ride through strategy for wind farm clusters in power systems with high wind power penetration

Cited by 39 publications

References 23 publications

Multidisciplinary design optimization of large wind turbines—Technical, economic, and design challenges

Multidisciplinary design optimization of large wind turbines—Technical, economic, and design challenges

Low voltage ride-through enhancement of DFIG-based wind turbine using DC link switchable resistive type fault current limiter

Enhanced Crowbar Protection for Fault Ride through Capability of Wind Generation Systems

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