Control of VSC-HVDC in offshore AC islands with wind power plants: Comparison of two alternatives

Zeni, Lorenzo; Hesselbæk, Bo; Sørensen, Poul Ejnar; Hansen, Alexander; Kjær, P.C.

doi:10.1109/ptc.2015.7232291

Cited by 10 publications

(18 citation statements)

References 5 publications

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“…[9,29,30] mention a different control strategy based on direct control of the AC voltage. The lack of a dedicated fast current controller is compensated by limiting the voltage drop over the converter impedance to e.g.…”

Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

“…[29] considers this as a drawback during fault events. As a consequence the converter currents might exceed the limits [29]. Therefore, the vector control-based scheme is used in pos.…”

Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

“…This allows to use the beneficial feed-forward of the load current in the voltage control [30]. The effective capacitance of the offshore grid in combination with gain scheduling might allow its avoidance [29] but is outside the scope of this study.…”

Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

See 2 more Smart Citations

Handling of unbalanced faults in HVDC-connected wind power plants

Schönleber

Prieto‐Araujo

Ratés-Palau

et al. 2017

Electric Power Systems Research

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Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

“…[29] considers this as a drawback during fault events. As a consequence the converter currents might exceed the limits [29]. Therefore, the vector control-based scheme is used in pos.…”

Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

See 1 more Smart Citation

Handling of unbalanced faults in HVDC-connected wind power plants

Schönleber

Prieto‐Araujo

Ratés-Palau

et al. 2017

Electric Power Systems Research

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“…This controller design means that the offshore converter acts as an infinite bus for connected WPPs to absorb all produced power [2], [3], [5]- [7]. Figure 1 shows the three state-of-the-art control topologies studied in this paper.…”

Section: Offshore Vsc-hvdc Controlmentioning

confidence: 99%

“…A number of state-ofthe-art control topologies for the offshore VSC-HVDC converter are proposed in [2], [3], [5]- [7] with the majority based on a 'direct voltage' control method of the VSC-HVDC. A droop control method is not considered except in [3], as most of these control topologies are proposed for point-topoint VSC-HVDC configurations.…”

Section: Introductionmentioning

confidence: 99%

Offshore AC grid management for an AC integrated VSC-HVDC scheme with large WPPs

Shah

Barnes

Preece

2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

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Abstract-Point-to-point VSC-HVDC Wind power plant (WPP) links connected offshore by AC cables can be called an AC integrated VSC-HVDC scheme or virtual multi-terminal DC (MTDC) grid. Since, the AC integrated VSC-HVDC scheme forms an offshore AC grid, parallel operation of offshore VSC-HVDC converters is required. This paper compares three offshore converter control topologies: (i) feedforward control of AC voltage and frequency, (ii) feedback control of AC voltage, and (iii) feedback control of AC voltage and frequency with an inner current loop. The performance of power and current based droops has been assessed for the parallel offshore converters. Simulations carried out in DIgSILENT Power Factory are presented to illustrate the effect of these offshore converter control strategies on the dynamics of the AC system following the offshore grid disturbances.Index Terms-AC integrated scheme, droop control, offshore disturbances, offshore AC grid, wind power plants.

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Technical impacts of high penetration levels of wind power on power system stability

Flynn

Rather

Årdal

et al. 2016

WIREs Energy & Environment

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With increasing penetrations of wind generation, based on power‐electronic converters, power systems are transitioning away from well‐understood synchronous generator‐based systems, with growing implications for their stability. Issues of concern will vary with system size, wind penetration level, geographical distribution and turbine type, network topology, electricity market structure, unit commitment procedures, and other factors. However, variable‐speed wind turbines, both onshore and connected offshore through DC grids, offer many control opportunities to either replace or enhance existing capabilities. Achieving a complete understanding of future stability issues, and ensuring the effectiveness of new measures and policies, is an iterative procedure involving portfolio development and flexibility assessment, generation cost simulations, load flow, and security analysis, in addition to the stability analysis itself, while being supported by field demonstrations and real‐world model validation. WIREs Energy Environ 2017, 6:e216. doi: 10.1002/wene.216 This article is categorized under: Wind Power > Systems and Infrastructure Energy Infrastructure > Systems and Infrastructure

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Control of VSC-HVDC in offshore AC islands with wind power plants: Comparison of two alternatives

Cited by 10 publications

References 5 publications

Handling of unbalanced faults in HVDC-connected wind power plants

Handling of unbalanced faults in HVDC-connected wind power plants

Offshore AC grid management for an AC integrated VSC-HVDC scheme with large WPPs

Technical impacts of high penetration levels of wind power on power system stability

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