A Grid Voltage Measurement Method for Wind Power Systems during Grid Fault Conditions

Yoo, Cheol-Hee; Chung, Ilyong; Yoo, Han‐Ill; Hong, Sung‐Soo

doi:10.3390/en7117732

Cited by 6 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The block diagram and control structure of the WT is presented in Figure 5. The dynamic model of a wind power system includes a WT, a permanent magnet synchronous generator (PMSG), and a full-scale back-to-back converter, which is composed of a machineside converter (MSC), a DC link capacitor, and a grid-side inverter (GSI) [33,47]. In this structure, the rotational speed of the PMSG is regulated by the MSC to produce the maximum power from the available wind.…”

Section: Wt Modelmentioning

confidence: 99%

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Lee

Zafar

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

Stand-alone microgrids integrating renewable energy sources have emerged as an efficient energy solution for electrifying isolated sites, such as islands and remote areas. The design of a microgrid involves various influential factors, including technological development, economic feasibility, and environmental impacts, based on the conditions and regulations of a particular site. This paper proposes a comprehensive microgrid design framework based on power system analysis and techno-economic analysis. The obtained optimal microgrid configuration satisfies both the design objective and power system performance regulations. The proposed design approach focuses on using practical data and can adapt to any microgrid design problems based on the local characteristics of a specific site. The practicality and effectiveness of the design framework are validated by applying it to the design of a stand-alone microgrid for Deokjeok Island in South Korea. The case study results justify the importance of considering site-specific characteristics and the impacts of power system conditions on the optimal microgrid design.

show abstract

Section: Wt Modelmentioning

confidence: 99%

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Lee

Zafar

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…The back-to-back (BTB) converter control maintains the DC voltage and implements maximum power point tracking (MPPT). However, when a grid fault occurs, the converter may be out of the control [12,17,18]. The conventional methods mentioned in Figure 3 have disadvantages such as high cost and vulnerability to faults.…”

Section: Introductionmentioning

confidence: 99%

Application of a Superconducting Fault Current Limiter to Enhance the Low-Voltage Ride-Through Capability of Wind Turbine Generators

2019

View full text Add to dashboard Cite

The penetration of wind turbine generators onto the grid has grown worldwide at unprecedented rates in recent years. This raises the concern that the tripping of wind turbine generators could potentially cause system collapses. To alleviate these concerns, wind turbine generators need to maintain connection with the grid when a grid fault occurs. This has provoked many countries to adopt low-voltage ride-through (LVRT) for wind turbine generators. The LVRT is the capability of wind turbine generators to maintain connectivity during certain periods of voltage sag. The wind turbine generators should be connected to the grid to support fault recovery. Also, wind turbine generators must provide reactive power according to the grid voltage sag. Therefore, much research has been focused on enhancing LVRT capability. To enhance LVRT capability, this paper proposes the application of a superconducting fault current limiter (SFCL) in the system. The fault current was suppressed and the voltage sag was improved through the application of the SFCL. By improving the voltage sag, the wind turbine generator and the grid were able to maintain a connection. However, suppression of the fault current can cause a problem in the overcurrent relay (OCR) trip time delay. The trip time delay was solved by OCR resetting. Through a power system computer-aided design/electromagnetic transients including DC (PSCAD/EMTDC), the enhancement of LVRT capability and improvement of the trip delay was confirmed.

show abstract

“…Recent grid codes require grid-connected wind turbines to remain connected to the power system under certain network disturbances, which is commonly known as the fault ride-through (FRT) requirements [50]. When a voltage drop, resulting from a fault, for example, occurs at the DFIG terminals, high currents will appear in the rotor [5,11].…”

Section: Type III Wind Turbine Modelmentioning

confidence: 99%

Validation of Generic Models for Variable Speed Operation Wind Turbines Following the Recent Guidelines Issued by IEC 61400-27

et al. 2016

View full text Add to dashboard Cite

Considerable efforts are currently being made by several international working groups focused on the development of generic, also known as simplified or standard, wind turbine models for power system stability studies. In this sense, the first edition of International Electrotechnical Commission (IEC) 61400-27-1, which defines generic dynamic simulation models for wind turbines, was published in February 2015. Nevertheless, the correlations of the IEC generic models with respect to specific wind turbine manufacturer models are required by the wind power industry to validate the accuracy and corresponding usability of these standard models. The present work conducts the validation of the two topologies of variable speed wind turbines that present not only the largest market share, but also the most technological advances. Specifically, the doubly-fed induction machine and the full-scale converter (FSC) topology are modeled based on the IEC 61400-27-1 guidelines. The models are simulated for a wide range of voltage dips with different characteristics and wind turbine operating conditions. The simulated response of the IEC generic model is compared to the corresponding simplified model of a wind turbine manufacturer, showing a good correlation in most cases. Validation error sources are analyzed in detail, as well. In addition, this paper reviews in detail the previous work done in this field. Results suggest that wind turbine manufacturers are able to adjust the IEC generic models to represent the behavior of their specific wind turbines for power system stability analysis.

show abstract

A Grid Voltage Measurement Method for Wind Power Systems during Grid Fault Conditions

Cited by 6 publications

References 14 publications

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Design Framework of a Stand-Alone Microgrid Considering Power System Performance and Economic Efficiency

Application of a Superconducting Fault Current Limiter to Enhance the Low-Voltage Ride-Through Capability of Wind Turbine Generators

Validation of Generic Models for Variable Speed Operation Wind Turbines Following the Recent Guidelines Issued by IEC 61400-27

Contact Info

Product

Resources

About