Utilisation of real‐scale renewable energy test facility for validation of generic wind turbine and wind power plant controller models

Zeni, Lorenzo; Gevorgian, Vahan; Wallen, Robb; Bech, John; Sørensen, Poul Ejnar; Hesselbæk, Bo

doi:10.1049/iet-rpg.2015.0478

Cited by 9 publications

(10 citation statements)

References 10 publications

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“…According to Durrant et al (2003), using current vector control for converters, only 0.4 per unit (pu) power transmission can be obtained for a DC link, where only in one of AC sides of the CGI (DUT or utility grid sides) is the SCR 1 pu. However, by using more efficient control methods or increasing DC-link capacitance, it can be increased to higher than 0.8 pu (Zhang et al, 2011). Also, the connection of CGI to the utility grid should comply with the local grid connection requirements regarding power quality aspects.…”

Section: Utility Grid Effects On a Test Benchmentioning

confidence: 99%

Generic characterization of electrical test benches for AC- and HVDC-connected wind power plants

Nouri

Göksu²,

Gevorgian

et al. 2020

Wind Energ. Sci.

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Abstract. The electrical test and assessment of wind turbines go hand in hand with standards and network connection requirements. In this paper, the generic structure of advanced electrical test benches, including grid emulator or controllable grid interface, wind torque emulator, and device under test, is proposed to harmonize state-of-the-art test sites. On the other hand, modern wind turbines are under development towards new features, concerning grid-forming, black-start, and frequency support capabilities as well as harmonic stability and control interaction considerations, to secure the robustness and stability of renewable-energy-based power systems. Therefore, it is necessary to develop new and revised test standards and methodologies to address the new features of wind turbines. This paper proposes a generic test structure within two main groups, including open-loop and closed-loop tests. The open-loop tests include the IEC 61400-21-1 standard tests as well as the additional proposed test options for the new capabilities of wind turbines, which replicate grid connection compliance tests using open-loop references for the grid emulator. In addition, the closed-loop tests evaluate the device under test as part of a virtual wind power plant and perform real-time simulations considering the grid dynamics. The closed-loop tests concern grid connection topologies consisting of AC and HVDC, as well as different electrical characteristics, including impedance, short-circuit ratio, inertia, and background harmonics. The proposed tests can be implemented using available advanced test benches by adjusting their control systems. The characteristics of a real power system can be emulated by a grid emulator coupled with real-time digital simulator systems through a high-bandwidth power-hardware-in-the-loop interface.

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Section: Utility Grid Effects On a Test Benchmentioning

confidence: 99%

Generic characterization of electrical test benches for AC- and HVDC-connected wind power plants

Nouri

Göksu²,

Gevorgian

et al. 2020

Wind Energ. Sci.

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“…where The SFOC inner (current) controllers are generally tuned through (3) and (4). The third term in (3) and (4) is known as the cross-coupling term whereas the fourth term in (4) is the perturbation term.…”

Section: Conventional Sfoc Schemementioning

confidence: 99%

“…To avoid complicated and potentially damaging fullscale tests on sensitive and costly commercial WT units, the practical aspects of WT energy conversion research are typically underpinned by utilisation of laboratory facilities capable of emulating WT electric drive behaviour. The development of realscale laboratory facilities for this purpose [4] can, however, pose prohibitive limitations in the academic research community where there is a need for lower cost yet representative test facilities to enable proof of concept research of various aspects of WT operations: these can range from model and control method verification to examination of power quality, fault effects and grid support capability [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

DFIG stator flux‐oriented control scheme execution for test facilities utilising commercial converters

Sarma

Tuohy

Apsley

et al. 2018

IET Renewable Power Generation

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The utilisation of conventional industrial converters for development of doubly-fed induction generator (DFIG) test facilities poses an attractive prospect as it would provide proprietary commercial protection and functionality. However, standard commercial converters present significant challenges in attainable DFIG operational capability. This is due to the fact that they are designed for execution of a limited set of pre-programmed common control modes. They typically do not cater for execution of complicated stator flux-oriented vector control (SFOC) schemes required for DFIG drive control. The research work presented in this study reports a methodology that enables effective implementation of SFOC on industrial converters through a dedicated external real-time platform and a velocity/position communication module. The reported scheme is validated in laboratory experiments on an experimental DFIG test-rig facility. The presented principles are general and are therefore applicable to conventional DFIG drive architectures utilising standard industrial converters.

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“…Nevertheless, in the specific literature, there are few studies on the values of parameters to be used for simulation purposes [15,16]. Moreover, the recent publication of the standard, as well as the constraints of the wind turbine manufacturers [17] have led to the need to conduct studies that provide parameter values and simulation results [18], thus allowing the adjustment of the generic wind turbine and wind power plant models by both researchers and institutions [19,20]. Finally, the contributions of the authors presented in the present work may be considered by the International Electrotechnical Commission for inclusion in Edition 2 of IEC 61400-27-1, which is currently under development and is intended for publication in 2018.…”

Section: Introductionmentioning

confidence: 99%

Generic Type 3 Wind Turbine Model Based on IEC 61400-27-1: Parameter Analysis and Transient Response under Voltage Dips

et al. 2017

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This paper analyzes the response under voltage dips of a Type 3 wind turbine topology based on IEC 61400-27-1. The evolution of both active power and rotational speed is discussed in detail when some of the most relevant control parameters, included in the mechanical, active power and pitch control models, are modified. Extensive results are also included to explore the influence of these parameters on the model dynamic response. This work thus provides an extensive analysis of the generic Type 3 wind turbine model and provides an estimation of parameters not previously discussed in the specific literature. Indeed, the International Standard IEC 61400-27-1, recently published in February 2015, defines these generic dynamic simulation models for wind turbines, but does not provide values for the parameters to simulate the response of these models. Thus, there is a pressing need to establish correlations between IEC generic models and specific wind turbine manufacturer models to estimate suitable parameters for simulation purposes. Extensive results and simulations are also included in the paper.

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Utilisation of real‐scale renewable energy test facility for validation of generic wind turbine and wind power plant controller models

Cited by 9 publications

References 10 publications

Generic characterization of electrical test benches for AC- and HVDC-connected wind power plants

Generic characterization of electrical test benches for AC- and HVDC-connected wind power plants

DFIG stator flux‐oriented control scheme execution for test facilities utilising commercial converters

Generic Type 3 Wind Turbine Model Based on IEC 61400-27-1: Parameter Analysis and Transient Response under Voltage Dips

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