Harmonic Assessment for Wind Parks Based on Sensitivity Analysis

Liu, Zifa; Rong, Jun; Zhao, Guankun; Luo, Yimo

doi:10.1109/tste.2017.2680461

Cited by 43 publications

(20 citation statements)

References 23 publications

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“…(2) The voltage equations at the rotor side in the direct and quadrature axis is, ϕqr + dϕdr/dt (3) ϕdr + dϕqr/dt (4) The Flux linkages at stator and rotor in direct and quadrature axis is, Φds = Ls ids + Lm idr (5) Φqs = Ls iqs + Lm iqr (6) Φdr = Ls idr + Lm ids (7) Φqr = Ls iqr + Lm iqs (8) The Active and reactive power at the stator side is, Ps = Vds ids +Vqs iqs (9) Qs = Vqs iqs -Vds iqs (10) The Active and reactive power at the rotor side is, Pr = Vdr idr +Vqr iqr (11) Qr = Vqr idr -Vdr iqr (12) The Electromagnetic torque is obtained by the product of flux induced and current flowing, Te = 3/2 P/2 (ϕds iqs -ϕqs ids) (13) Where R is resistance in ohms, Ls is self inductance in henry, Lm is mutual inductance of windings in henry, V is voltage in volts, i is current in amperes, ϕ is flux in webers respectively indicate stator and rotor direct and quadrature axis.…”

Section: Fig2: Equivalent Circuitmentioning

confidence: 99%

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Design of a Harmonic Filter for a Grid Connected Doubly Fed Induction Generator under Unsymmetrical Fault Conditions

Soumya*¹,

Rao²

2020

IJITEE

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The analysis and controlling of harmonics in a doubly fed induction generator (DFIG) is studied under the unsymmetrical fault conditions in MATLAB/SIMULINK software. The proposed DFIG uses wind energy as the primary source for which is used for power generation. Wind energy is a non-polluting renewable energy resource that is available free of cost but when the wind is used, harmonics are introduced into the power system, so voltage imbalances occur in the grid. In order to mitigate the voltage imbalances (or) ripples in the voltage or current, LCL filters are introduced in the wind turbine because they are chiefly used for high power and low-frequency applications. Various unsymmetrical faults are simulated by referring the specifications selected and analysed with the tripping time for the desired duration of time in the circuit breaker, voltage and current waveforms are analysed only during the transient period on the basis of FFT analysis to know about THD content.

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Section: Fig2: Equivalent Circuitmentioning

confidence: 99%

“…Line-to-line faults are one-tenth of the total percentage of faults and lineto-line-to-ground faults are one-fourth of the total percentage of faults. These faults introduce harmonics into the whole power system [3], [4].…”

Section: Introductionmentioning

confidence: 99%

Design of a Harmonic Filter for a Grid Connected Doubly Fed Induction Generator under Unsymmetrical Fault Conditions

Soumya*¹,

Rao²

2020

IJITEE

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“…The harmonics are created when non-sinusoidal currents and non-sinusoidal voltages increase in the network, and these distortions are generally called harmonic distortion [29,30]. The [31].…”

Section: Harmonic Distortionmentioning

confidence: 99%

Power Quality and System Stability Impact of Large-Scale Distributed Generation on the Distribution Network: Case Study of 60 MW Derna Wind Farm

Saad¹,

Naily²,

Wafi³

et al. 2018

Stability Control and Reliable Performance of Wind Turbines

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Wind energy (WE) has become one of the most promising and developed forms of renewable energy source due to its efficiency and the availability of different capacities according to the loading requirements. The integration of wind turbines in the Libyan network has become an indispensable choice due to Libya's distinguished location and for the Libyan National Initiative. Despite the numerous benefits of WE, the penetration of WE sources in the distribution network has some negative impacts related to the quality and reliability of the electric power supplied to the network. Owing to, the intermittent nature of these sources and electronic circuits needed to regulate the extracted power to comply with the grid requirements. In this chapter, implementation of the eastern Libyan network in NEPLAN and MATLAB/SIMULINK packages are carried out to investigate and analyze the significance of wind farm penetration in the medium voltage level of Libyan Distribution Network. A 60 MVA wind farm system has been connected to the Libyan distribution network according to the Libyan National Initiative. Different penetration scenarios are simulated to testify the technical aspects of integrating WE on the distribution level.

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“…Using the inverter harmonic voltage source and LCL filter to represent the wind turbine harmonic impedance model [10] as shown in Fig.4.…”

Section: Harmonic Model Of Wind Farmmentioning

confidence: 99%

Assessment Method of Wind Farm Harmonic Emission Value Based on Improved Complex Linear Regression Model

et al. 2017

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Abstract. Wind turbine filter and reactive power compensation devices lead to the harmonic impedance of wind farm is not much larger than that of the utility, so the influence by the wind farm harmonic impedance can not be neglected while assessing the harmonic emission value of wind farm A method based on improved complex linear regression is proposed in this paper for assessing the harmonic emission value of wind farm. The linear regression model is established by using the harmonic current at PCC point as the explanatory variable and the harmonic voltage of the wind farm as the explanatory variable. The utility harmonic impedance is calculated by complex least squares method. For various of the topology of wind farm feeder network, an equivalent method of feeder network is proposed to calculate the wind farm harmonic impedance. Errors are analyzed by using the error marginal effect of the dispersion parameter. Simulation and measured data verify the effectiveness of the proposed method

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Harmonic Assessment for Wind Parks Based on Sensitivity Analysis

Cited by 43 publications

References 23 publications

Design of a Harmonic Filter for a Grid Connected Doubly Fed Induction Generator under Unsymmetrical Fault Conditions

Design of a Harmonic Filter for a Grid Connected Doubly Fed Induction Generator under Unsymmetrical Fault Conditions

Power Quality and System Stability Impact of Large-Scale Distributed Generation on the Distribution Network: Case Study of 60 MW Derna Wind Farm

Assessment Method of Wind Farm Harmonic Emission Value Based on Improved Complex Linear Regression Model

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