Identification of Grid Impedance During Severe Faults

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Resumé

Grid-connected converters, when subject to grid fault conditions, should stay connected and support the network voltage via reactive power injection. The fulfilment of this requirement strongly depends on the dynamics and stability of the converter control system. It can be shown that local static instability, and the consequent local dynamic instability can be avoided if the grid impedance during the fault is known. This paper proposes a novel method to identify the grid impedance during the fault by using the grid fault disturbance as an identification pulse. The proposed identification method is implemented in a proof-of-concept detailed simulation model, and verified with experimental results.
OriginalsprogEngelsk
TitelProceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE)
Antal sider7
ForlagIEEE Press
Publikationsdatosep. 2019
DOI
StatusUdgivet - sep. 2019
Begivenhed2019 IEEE Energy Conversion Congress and Exposition (ECCE) - Baltimore, USA
Varighed: 29 sep. 20193 okt. 2019

Konference

Konference2019 IEEE Energy Conversion Congress and Exposition (ECCE)
LandUSA
By Baltimore
Periode29/09/201903/10/2019

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Reactive power
Control systems
Electric potential

Citer dette

Betz, R., & Taul, M. G. (2019). Identification of Grid Impedance During Severe Faults. I Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE) IEEE Press. https://doi.org/10.1109/ECCE.2019.8911873
Betz, Robert ; Taul, Mads Graungaard. / Identification of Grid Impedance During Severe Faults. Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press, 2019.
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title = "Identification of Grid Impedance During Severe Faults",
abstract = "Grid-connected converters, when subject to grid fault conditions, should stay connected and support the network voltage via reactive power injection. The fulfilment of this requirement strongly depends on the dynamics and stability of the converter control system. It can be shown that local static instability, and the consequent local dynamic instability can be avoided if the grid impedance during the fault is known. This paper proposes a novel method to identify the grid impedance during the fault by using the grid fault disturbance as an identification pulse. The proposed identification method is implemented in a proof-of-concept detailed simulation model, and verified with experimental results.",
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Betz, R & Taul, MG 2019, Identification of Grid Impedance During Severe Faults. i Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press, 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, USA, 29/09/2019. https://doi.org/10.1109/ECCE.2019.8911873

Identification of Grid Impedance During Severe Faults. / Betz, Robert; Taul, Mads Graungaard.

Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press, 2019.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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AB - Grid-connected converters, when subject to grid fault conditions, should stay connected and support the network voltage via reactive power injection. The fulfilment of this requirement strongly depends on the dynamics and stability of the converter control system. It can be shown that local static instability, and the consequent local dynamic instability can be avoided if the grid impedance during the fault is known. This paper proposes a novel method to identify the grid impedance during the fault by using the grid fault disturbance as an identification pulse. The proposed identification method is implemented in a proof-of-concept detailed simulation model, and verified with experimental results.

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Betz R, Taul MG. Identification of Grid Impedance During Severe Faults. I Proceedings of 2019 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE Press. 2019 https://doi.org/10.1109/ECCE.2019.8911873