Modeling of Wind Speeds Inside a Wind Farm With Application to Wind Farm Aggregate Modeling Considering LVRT Characteristic

Jin, Yuqing; Wu, Daming; Ju, Ping; Rehtanz, Christian; Wu, Feng; Pan, Xin

doi:10.1109/tec.2019.2938813

Cited by 33 publications

(13 citation statements)

References 30 publications

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“…Instead, the wind farm/PV station is regarded as a single equivalent WTG/PV unit, because the algorithm complexity when forming the LIM/LAM in (2) will be greatly increased with these collector subsystems taken into account. In the early development of wind farms, the radial collector subsystem is widely adopted for multiple WTG/PV units aggregation and the LIM/LAM calculation methods tailored for the radial collector topology are developed accordingly, e.g., the impedance separation method reported in [5]. However, as the ring topology is increasingly used to raise the collector's reliability against cable faults, the existing radial topology oriented methods can not be applicable any more.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Impedance/Admittance Analysis Method Considering Collector Subsystem Transformation in Converter-Integrated Power Systems

Wang

et al. 2021

IEEE Trans. Power Syst.

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To analyze oscillation phenomenon caused by the interaction between converters and an AC grid, the impedance/admittance analysis method is a popular solution, in which each electrical component is represented by an external impedance/admittance matrix and a lumped matrix is formed for stability analysis. However, for converter-integrated power systems considering typical collector subsystems (e.g., the radial and ring collector subsystem in wind farms and PV stations), the impedance network reduction to form the lumped impedance/admittance matrix (LIM/LAM) becomes complicated particularly for a ring collector subsystem, which affects the efficiency of the oscillation analysis. To address this problem, this paper proposes a method that can transform a typical topology of collector subsystems into a pure-parallel topology so that lumped admittance matrix is much easier to be derived. Algorithm complexity analysis confirms its computational advantages. A fifty-converter system is used to verify the effectiveness of the proposed method.

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Section: Introductionmentioning

confidence: 99%

“…To reduce the simplification complexities, the two typical topologies of collector subsystems in Fig. 2 (a)-(b) are considered to be transformed into a pure-parallel topology which is easier for LAM derivation [5] . The layout of the pure-parallel topology and the corresponding admittance network is illustrated in Fig.…”

mentioning

confidence: 99%

An Improved Impedance/Admittance Analysis Method Considering Collector Subsystem Transformation in Converter-Integrated Power Systems

Wang

et al. 2021

IEEE Trans. Power Syst.

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“…The effectiveness of the proposed LVRT control methodologies were validated with simulation and experiments. In [18], a wind speed combination model (WSCM) was proposed using the field-measured data, which was then used as equivalent wind speeds for each WTG when modeling the entire wind farm. Results from a case study verified the correctness of WSCM and the performance of the proposed algorithm in predicting the LVRT entering status of WT generators in the wind farm.…”

Section: Introductionmentioning

confidence: 99%

A Distributed Control Scheme Using SiC-Based Low Voltage Ride-Through Compensator for Wind Turbine Generators

Shi

2021

Micromachines

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As the penetration of renewable energy power generation, such as wind power generation, increases low-voltage ride-through (LVRT), control is necessary during grid faults to support wind turbine generators (WTGs) in compensating reactive current to restore nominal grid voltages, and maintain a desired system stability. In contrast to the commonly used centralized LVRT controller, this study proposes a distributed control scheme using a LVRT compensator (LVRTC) capable of simultaneously performing reactive current compensation for doubly-fed induction generator (DFIG)-, or permanent magnet synchronous generator (PMSG)-based WTGs. The proposed LVRTC using silicon carbide (SiC)-based inverters can achieve better system efficiency, and increase system reliability. The proposed LVRTC adopts a digital control scheme and dq-axis current decoupling algorithm to realize simultaneous active/reactive power control features. Theoretical analysis, derivation of mathematical models, and design of the control scheme are initially conducted, and simulation is then performed in a computer software environment to validate the feasibility of the system. Finally, a 2 kVA small-scale hardware system with TI’s digital signal processor (DSP) as the control core is implemented for experimental verification. Results from simulation and implementation are in close agreement, and validate the feasibility and effectiveness of the proposed control scheme.

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“…The system operation at low wind speed is highly nonlinear, as the power generation is not significant [7]. A modeling method for wind speeds of the wind turbine generators was proposed in [8].…”

Section: Introductionmentioning

confidence: 99%

Performance Enhancement of Wind Energy Conversion System at Low WindSpeeds

Loganathan¹,

Albert²,

Y³

2021

Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, In

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This paper is concerned with the design, implementation and monitoring of wind energy conversion system for domestic applications. It is speculated that at most of the places in India, windmills will not be viable due to low wind speed. Hence, a generator with sufficient torque control and having the tendency to produce energy even at very low speed is required. The proposed work has been implemented to generate electricity at low wind speed used for household applications. The main objective intended is to manufacture a cost effective wind turbine and produce effective power when compared to the windmill available in the domestic market. The overall design consists of 3 blades using NACA 63215 profile which is made up of fiber glass material. The permanent magnet synchronous generator with the permanent magnet of alnico type is used to produce the power of 250 W. The power charged in the lead acid battery of rating 24 V; 150 Ah is utilized by the load using power electronic converters. The micro wind turbine operated at wind speed as low as 4.8 m/s and the output power thus obtained was 250 W. The measuring system employs anemometer to measure wind speed, potentiometer to measure wind direction, LM35 sensor to measure generator temperature and hall sensor to measure the generator voltage and load current. All the parameters are monitored continuously to evaluate the performance of the turbine. Since the operating wind speed and production cost is low, the proposed system will serve the basic necessities in meeting the requirements of household appliances. A detailed comparative study is carried out to show the effectiveness of the proposed design.

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Modeling of Wind Speeds Inside a Wind Farm With Application to Wind Farm Aggregate Modeling Considering LVRT Characteristic

Cited by 33 publications

References 30 publications

An Improved Impedance/Admittance Analysis Method Considering Collector Subsystem Transformation in Converter-Integrated Power Systems

An Improved Impedance/Admittance Analysis Method Considering Collector Subsystem Transformation in Converter-Integrated Power Systems

A Distributed Control Scheme Using SiC-Based Low Voltage Ride-Through Compensator for Wind Turbine Generators

Performance Enhancement of Wind Energy Conversion System at Low WindSpeeds

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