An Accurate Type III Wind Turbine Generator Short Circuit Model for Protection Applications

Kauffmann, Thomas; Karaagac, Ulas; Koçar, Ilhan; Jensen, Simon; Mahseredjian, Jean; Farantatos, Evangelos

doi:10.1109/tpwrd.2016.2614620

Cited by 44 publications

(34 citation statements)

References 19 publications

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“…References [5][6][7][8][9] have presented the generic Type-III WTG model used in this paper. This section presents a summary of the main features of the model.…”

Section: Generic Type-iii Wtg Modelmentioning

confidence: 99%

“…Two versions of the phasor domain model have been tested: a detailed version as outlined in [2,8,9] and a new simplified version as proposed in this work. They have two main differences: the first is the method of establishing the dq reference frame of voltage and flux.…”

Section: Faultmentioning

confidence: 99%

“…These EMT-type models can emulate the time-domain fault response of an actual WTG. Taking these detailed models as references, phasor domain models were developed and an iterative algorithm to integrate these models into protection tools based on steady-state solvers was proposed [7][8][9]. The phasor models reproduce the steady-state short circuit behavior of detailed models.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Field validation of generic wind park models using fault records

Haddadi

Koçar

Kauffmann

et al. 2019

J. Mod. Power Syst. Clean Energy

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A challenge faced by protection and planning engineers is the development and validation of accurate wind turbine generator (WTG) models to study the impact of increased wind integration on system protection. This paper is on the experimental validation of a generic electromagnetic transient-type (EMT-type) model of aggregated WTGs or wind parks suitable for transient studies.The phasor domain equivalent of the generic model, suitable for protection tools based on steady-state solvers, is also considered. The model has been validated using two sets of actual relay records for the fault response of two wind parks consisting of Type-III WTGs and connected to 115 kV and 230 kV transmission systems. The objective is to show that the generic model can reproduce the actual fault response in simulations, and protection engineers can obtain accurate models of wind parks using fault records. A distinctive characteristic of a WTG is its substantially different negative sequence fault current contribution compared to a synchronous generator. The paper shows that the generic model provides enough options to reproduce the negative sequence behavior and hence is suitable for fault studies involving negative sequence-based protection.

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“…References [5][6][7][8][9] have presented the generic Type-III WTG model used in this paper. This section presents a summary of the main features of the model.…”

Section: Generic Type-iii Wtg Modelmentioning

confidence: 99%

Section: Faultmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Field validation of generic wind park models using fault records

Haddadi

Koçar

Kauffmann

et al. 2019

J. Mod. Power Syst. Clean Energy

Self Cite

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“…The stator of the DFIG is connected with the power grid directly and the rotor is connected with the power grid through a power electronic converter which consists of the RSC and the grid side converter (GSC) [22]. When the DFIG is operating, both stator and power electronic converter can exchange power with the power grid.…”

Section: Mathematical Model Of the Dfigmentioning

confidence: 99%

“…i r_ref is the reference of the rotor current. According to Equations (21) and (22), the differential equations are given:…”

Section: Rotor Current Calculation and Parameter Selection Principlementioning

confidence: 99%

Improved Rotor Braking Protection Circuit and Self-Adaptive Control for DFIG during Grid Fault

Chen¹,

Yuanhao²,

Zhu³

et al. 2019

Energies

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This paper introduces an improved rotor braking protection circuit configuration and the corresponding self-adaptive control strategy to enhance the low voltage ride-through (LVRT) capability of the doubly-fed induction generator (DFIG). The proposed protection circuit consists of a crowbar circuit and a series rotor braking resistor array, which guarantees the safe operation of wind generators under the LVRT. Moreover, to adapt the proposed protection and further enhance the performance of the improved configuration, a corresponding self-adaptive control strategy is presented, which regulates the rotor braking resistor and protection exiting time automatically through calculating the rotor current in the fault period. The LVRT capability and transient performance of the DFIG by using the proposed method is tested with simulation. Compared with the conventional crowbar protection or the fixed rotor braking protection, the proposed protection and the control strategy present several advantages, such as retaining the control of the rotor side converter, avoiding repeated operation of the protection and accelerating the damping of stator flux linkage during a grid fault.

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Analytical expression of equivalent duration and sensitivity model of aperiodic component of post‐fault thermal effect of DFIG

Zhang

Hua

et al. 2021

Int Trans Electr Energ Syst

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The temperature rise caused by the close fault may damage the doubly-fed induction generator (DFIG) and other electrical equipments. The thermal effect will be quantified by the step-by-step integration, which however cannot differentiate the periodic and aperiodic components. In this paper, the thermal effect of the DFIG is described by 10 components. According to their attenuation of the components, the periodic and the aperiodic components of the thermal effect are determined. To facilitate calculation, the analytical expression of the equivalent duration of the aperiodic components is proposed. To quantify the contributing factors to the thermal effect, the sensitivity model of the equivalent duration to the relevant factors is proposed. The numerical results validate the accuracy of the proposed equivalent duration and sensitivity model of the aperiodic component with different wind speeds and fault severities. The research provides the practical tool for the security of the DFIG, and gives the basis of the future work of the thermal stability check of the wind farms.

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An Accurate Type III Wind Turbine Generator Short Circuit Model for Protection Applications

Cited by 44 publications

References 19 publications

Field validation of generic wind park models using fault records

Field validation of generic wind park models using fault records

Improved Rotor Braking Protection Circuit and Self-Adaptive Control for DFIG during Grid Fault

Analytical expression of equivalent duration and sensitivity model of aperiodic component of post‐fault thermal effect of DFIG

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