Stability analysis of a grid connected DFIG based WECS with two-mass shaft modeling

Prasanthi, E.; Shubhanga, K. N.

doi:10.1109/indicon.2016.7838953

Cited by 12 publications

(3 citation statements)

References 9 publications

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“…The total active power P a is controlled by acting on the direct-axis component of the rotor current i dr . For stator reactive power (Q s ), the control is performed by acting on the quadrature-axis component i qr [19].…”

Section: Current and Power Control Loopmentioning

confidence: 99%

Multi-Objective PSO for Control-Loop Tuning of DFIG Wind Turbines with Chopper Protection and Reactive-Current Injection

Aguilar,

Coury,

Reginatto

et al. 2023

Energies

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The control systems for the variable-speed wind turbine based on the Doubly Fed Induction Generator (DFIG) pose some tuning challenges. The performance and stability of DFIG wind turbines during faults in power grids are directly related to their controller settings. This work investigates how incorporating protection via a braking-Chopper controller connected to the DC link (DC Chopper) and a reactive-current injection during the PI-tuning process affects the performance of DFIG wind turbines during electrical faults. For the tuning process, the Multi-Objective-Particle-Swarm-Optimization (MOPSO) algorithm was used. Thus, two different approaches adopting this methodology were investigated, considering sequential and simultaneous tuning. The results showed that sequential tuning presented a better performance in relation to the reactive-current injection and lower amplitude deviations of the electrical quantities during and after the fault. On the other hand, simultaneous tuning reached damping of the mechanical oscillations faster and presented better performance of the protection system.

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Section: Current and Power Control Loopmentioning

confidence: 99%

Multi-Objective PSO for Control-Loop Tuning of DFIG Wind Turbines with Chopper Protection and Reactive-Current Injection

Aguilar,

Coury,

Reginatto

et al. 2023

Energies

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“…In order to ensure the accuracy of calculation, this paper selects the two-mass block shafting model. e mathematical model of the shafting model [25] is as follows:…”

Section: Shafting Modelmentioning

confidence: 99%

The Small-Signal Stability of Offshore Wind Power Transmission Inspired by Particle Swarm Optimization

Huang

Chen

et al. 2020

Complexity

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Voltage source converter-high-voltage direct current (VSC-HVDC) is the mainstream technology of the offshore wind power transmission, which has been rapidly developed in recent years. The small-signal stability problem is closely related to offshore wind power grid-connected safety, but the present study is relatively small. This paper established a mathematical model of the doubly fed induction generator (DFIG) integrated into the IEEE9 system via VSC-HVDC in detail, and small-signal stability analysis of offshore wind farm (OWF) grid connection is specially studied under different positions and capacities. By selecting two load nodes and two generator nodes in the system for experiments, the optimal location and capacity of offshore wind power connection are obtained by comparing the four schemes. In order to improve the weak damping of the power system, this paper presents a method to determine the parameters of the power system stabilizer (PSS) based on the particle swarm optimization (PSO) algorithm combined with different inertia weight functions. The optimal position of the controller connected to the grid is obtained from the analysis of modal control theory. The results show that, after joining the PSS control, the system damping ratio significantly increases. Finally, the proposed measures are verified by MATLAB/Simulink simulation. The results show that the system oscillation can be significantly reduced by adding PSS, and the small-signal stability of offshore wind power grid connection can be improved.

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“…The direction of current and flux are defined as follows: positive current flows to the machine and produces positive flux. The voltage equations and magnetic linkage equations of the generator can be summarised in the vector form in the synchronous rotating dq reference frame

({, \begin{matrix} V_{normals} = R_{normals} I_{normals} + \frac{d ψ_{normals}}{d t} + normalj ω_{1} ψ_{s} \\ V_{normalr} = R_{normalr} I_{normalr} + \frac{d ψ_{normalr}}{d t} + normalj (ω_{1} - ω_{r}) ψ_{r} \end{matrix})

({, \begin{matrix} ψ_{normals} = L_{normals} I_{normals} + L_{normalm} I_{normalr} \\ ψ_{normalr} = L_{normalm} I_{normals} + L_{normalr} I_{normalr} \end{matrix})

As for the mechanical parts, the simplified two‐mass drive train model is widely used in system stability analysis [15]. The turbine, gearbox, shaft, and rotor of the generator are modelled as two masses, a spring and a damper in (3)–(6)

T_{normalm} - T_{sh} = 2 H_{normalt} \frac{d ω_{normalt}}{d t}

T_{sh} - T_{normale} = 2 H_{no...}

…”

Section: Mathematical Description Of a Grid‐connected Dfig‐based Wtmentioning

confidence: 99%

Modal analysis of a grid‐connected DFIG‐based WT considering multi‐timescale control interactions

Wan

2017

J. eng.

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Stability analysis of a grid connected DFIG based WECS with two-mass shaft modeling

Cited by 12 publications

References 9 publications

Multi-Objective PSO for Control-Loop Tuning of DFIG Wind Turbines with Chopper Protection and Reactive-Current Injection

Multi-Objective PSO for Control-Loop Tuning of DFIG Wind Turbines with Chopper Protection and Reactive-Current Injection

The Small-Signal Stability of Offshore Wind Power Transmission Inspired by Particle Swarm Optimization

Modal analysis of a grid‐connected DFIG‐based WT considering multi‐timescale control interactions

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