Nonlinear Control-Based Modified BFCL for LVRT Capacity Enhancement of DFIG-Based Wind Farm

Rashid, Gilmanur; Ali, Mohd. Hasan

doi:10.1109/tec.2016.2603967

Cited by 105 publications

(78 citation statements)

References 60 publications

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“…The DC reactor value used in the proposed CBFCL is smaller than the BFCL used in Firouzi and Gharehpetian, which results in considerable cost savings. The proposed CBFCL provides the reactive power to support the grid connecting point voltage by series capacitive compensation. This characteristic of the CBFCL fulfills the LVRT requirements of the WPP during and after fault period, which is the main advantage of the proposed CBFCL to the other types of FCLs …”

Section: Introductionmentioning

confidence: 73%

“…Among these solutions, the application of FCLs was found to be effective for SCC limitation and LVRT performance enhancement of both variable speed and fixed speed WTs . Application of the FCLs for grid connection of WPPs allows equipment to remain in service, even if the fault current exceeds its rated peak and short time withstand current.…”

Section: Introductionmentioning

confidence: 99%

“…However, the high value of DC reactor and the cost of the BFCL transformer are main problems of this BFCL. In Rashid and Ali and Rashid, an inductive BFCL (IBFCL) with modified configuration from the one used in Firouzi and Gharehpetian has been used for LVRT performance enhancement and SCC limitation of WPPs during fault. The power circuit of the IBFCL is depicted in Figure A.…”

Section: Introductionmentioning

confidence: 99%

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A modified capacitive bridge-type fault current limiter (CBFCL) for LVRT performance enhancement of wind power plants

Firouzi

2017

Int Trans Electr Energ Syst

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Summary Low‐voltage ride‐through (LVRT) is one of the main grid code requirements for integration of wind power plants (WPPs). This paper presents a capacitive bridge‐type fault current limiter (CBFCL) for LVRT performance enhancement of WPPs. The CBFCL is based on the conventional inductive bridge‐type fault current limiter (IBFCL), in which the limiting impedance of the IBFCL has been adapted according to WPPs environment to satisfy LVRT requirements. To show the efficiency of the CBFCL for LVRT performance enhancement, its capability is compared with the IBFCL. The WPP has been modeled by an equivalent aggregated squirrel‐cage induction generator. Simulations have been performed in PSCAD/EMTDC software. The simulation results reveal that the CBFCL is an effective and novel solution for LVRT performance enhancement and short circuit current limitation of WPPs. Also, it was found that the CBFCL is more competent to satisfy LVRT requirements than the IBFCL.

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Section: Introductionmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A modified capacitive bridge-type fault current limiter (CBFCL) for LVRT performance enhancement of wind power plants

Firouzi

2017

Int Trans Electr Energ Syst

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“…The wind power is analysed based on a DFIG. The DFIG is simulated using the control model suggested in IEC 61400-27, which includes active power, reactive power, current and pitch angle control modules [22,23]. The wind farm is equipped with a static var compensator (SVC) according to the integration capacity of the DFIG.…”

Section: Analysis Of the Wind Farm Transient Characteristicsmentioning

confidence: 99%

Research on Optimal Wind Power Penetration Ratio and the Effects of a Wind-Thermal-Bundled System under the Constraint of Rotor Angle Transient Stability

et al. 2018

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Large-scale wind-thermal-bundled power that is transmitted by mixed ultra-high voltage direct current (UHVDC)/ultra-high voltage alternating current (UHVAC) systems has become crucial for large-scale wind farms in China. Equations describing the electromagnetic power characteristics under short circuits for UHVAC lines and UHVDC blocks are derived based on an analysis of the external characteristics of a doubly fed wind farm and UHVDC systems. The effect of wind power penetration ratio on rotor angle transient stability is analysed, and the optimal wind power penetration ratio under the constraint of rotor angle transient stability is determined. The effects of system parameters, such as the UHVDC transmission capacity and the reactance of UHVAC lines on the optimal wind power penetration ratio are discussed. The trend of rotor angle stability varies from a monotonic deterioration to concave, and the optimal wind power penetration ratio increases from 0 to 30% under an UHVDC block when the reactance of UHVAC lines increases from 0.005 to 0.02. The optimal wind power penetration ratio under a short circuit increases from 40% to 60% when the reactance of UHVAC lines decreases from 0.02 to 0.006 and decreases from 40% to 30% when the capacity of UHVDC decreases from 3200 MW to 1600 MW. The analysis is verified by simulating an actual system in China's Northwest Power Grid.

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“…With the high-percentage integration of wind power into the main power grid, it usually requires the wind generator to realize low voltage ride-through (LVRT) when the power grid voltage is temporarily reduced due to a fault or load change in the power grid, or can even address the generator to stay operational and not disconnect from the power grid during and after the voltage dip [35,36]. A 1 s voltage drop starts at t = 1 s from nominal value to 0.65 p.u.…”

Section: Voltage Drop At Power Grid Under Operation Type Imentioning

confidence: 99%

Nonlinear Observer-Based Robust Passive Control of Doubly-Fed Induction Generators for Power System Stability Enhancement via Energy Reshaping

Dong

Li²,

Wu³

et al. 2017

Energies

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Abstract:The large-scale penetration of wind power might lead to degradation of the power system stability due to its inherent feature of randomness. Hence, proper control designs which can effectively handle various uncertainties become very crucial. This paper designs a novel robust passive control (RPC) scheme of a doubly-fed induction generator (DFIG) for power system stability enhancement. The combinatorial effect of generator nonlinearities and parameter uncertainties, unmodelled dynamics, wind speed randomness, is aggregated into a perturbation, which is rapidly estimated by a nonlinear extended state observer (ESO) in real-time. Then, the perturbation estimate is fully compensated by a robust passive controller to realize a globally consistent control performance, in which the energy of the closed-loop system is carefully reshaped through output feedback passification, such that a considerable system damping can be injected to improve the transient responses of DFIG in various operation conditions of power systems. Six case studies are carried out while simulation results verify that RPC can rapidly stabilize the disturbed DFIG system much faster with less overshoot, as well as supress power oscillations more effectively compared to that of linear proportional-integral-derivative (PID) control and nonlinear feedback linearization control (FLC).

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Nonlinear Control-Based Modified BFCL for LVRT Capacity Enhancement of DFIG-Based Wind Farm

Cited by 105 publications

References 60 publications

A modified capacitive bridge-type fault current limiter (CBFCL) for LVRT performance enhancement of wind power plants

A modified capacitive bridge-type fault current limiter (CBFCL) for LVRT performance enhancement of wind power plants

Research on Optimal Wind Power Penetration Ratio and the Effects of a Wind-Thermal-Bundled System under the Constraint of Rotor Angle Transient Stability

Nonlinear Observer-Based Robust Passive Control of Doubly-Fed Induction Generators for Power System Stability Enhancement via Energy Reshaping

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