Stability of DC Voltage Droop Controllers in VSC HVDC Systems

Florian Thams; Jon Are Suul; Salvatore D’Arco; Marta Molinas; Friedrich Wilhelm Fuchs

doi:10.1109/PTC.2015.7232614

Stability of DC Voltage Droop Controllers in VSC HVDC Systems

Florian Thams
, Jon Are Suul
, Salvatore D’Arco
, Marta Molinas
, Friedrich Wilhelm Fuchs

SINTEF
Norwegian University of Science and Technology
Christian Albrechts University of Kiel

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Future multi-terminal HVDC systems are expected to utilize dc voltage droop controllers and several control implementations have been proposed in literature. This paper first classifies possible dc droop implementations in a simple framework. Then, the small-signal stability of a VSC-based converter station is analyzed for all the identified droop control schemes. The stability range for the system is determined as a
function of the droop gain and is used to compare the flexibility and robustness of the implementations. The comparisons reveal that the droop implementations based on the ac current and dc voltage achieve a wider stability region than the other schemes and a limited sensitivity to the droop gain.

Original language	English
Title of host publication	Proceedings of 2015 IEEE Eindhoven PowerTech
Number of pages	7
Publisher	IEEE Press
Publication date	2015
DOIs	https://doi.org/10.1109/PTC.2015.7232614
Publication status	Published - 2015
Event	2015 IEEE Eindhoven PowerTech - Eindhoven, Netherlands Duration: 29 Jun 2015 → 2 Jul 2015 https://powertech2015-eindhoven.tue.nl/ https://ieeexplore.ieee.org/xpl/conhome/7210291/proceeding

Conference

Conference	2015 IEEE Eindhoven PowerTech
Country/Territory	Netherlands
City	Eindhoven
Period	29/06/2015 → 02/07/2015
Internet address	https://powertech2015-eindhoven.tue.nl/ https://ieeexplore.ieee.org/xpl/conhome/7210291/proceeding

Keywords

DC voltage droop control
Power transfer capability
Stability
VSC HVDC systems

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10.1109/PTC.2015.7232614

Stability of DC Voltage Droop Controllers in VSC HVDC Systems FINALAccepted author manuscript, 940 KB

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title = "Stability of DC Voltage Droop Controllers in VSC HVDC Systems",

abstract = "Future multi-terminal HVDC systems are expected to utilize dc voltage droop controllers and several control implementations have been proposed in literature. This paper first classifies possible dc droop implementations in a simple framework. Then, the small-signal stability of a VSC-based converter station is analyzed for all the identified droop control schemes. The stability range for the system is determined as a function of the droop gain and is used to compare the flexibility and robustness of the implementations. The comparisons reveal that the droop implementations based on the ac current and dc voltage achieve a wider stability region than the other schemes and a limited sensitivity to the droop gain.",

keywords = "DC voltage droop control, Power transfer capability, Stability, VSC HVDC systems",

author = "Florian Thams and Suul, \{Jon Are\} and Salvatore D{\textquoteright}Arco and Marta Molinas and Fuchs, \{Friedrich Wilhelm\}",

year = "2015",

doi = "10.1109/PTC.2015.7232614",

language = "English",

booktitle = "Proceedings of 2015 IEEE Eindhoven PowerTech",

publisher = "IEEE Press",

note = "2015 IEEE Eindhoven PowerTech ; Conference date: 29-06-2015 Through 02-07-2015",

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T1 - Stability of DC Voltage Droop Controllers in VSC HVDC Systems

AU - Thams, Florian

AU - Suul, Jon Are

AU - D’Arco, Salvatore

AU - Molinas, Marta

AU - Fuchs, Friedrich Wilhelm

PY - 2015

Y1 - 2015

N2 - Future multi-terminal HVDC systems are expected to utilize dc voltage droop controllers and several control implementations have been proposed in literature. This paper first classifies possible dc droop implementations in a simple framework. Then, the small-signal stability of a VSC-based converter station is analyzed for all the identified droop control schemes. The stability range for the system is determined as a function of the droop gain and is used to compare the flexibility and robustness of the implementations. The comparisons reveal that the droop implementations based on the ac current and dc voltage achieve a wider stability region than the other schemes and a limited sensitivity to the droop gain.

AB - Future multi-terminal HVDC systems are expected to utilize dc voltage droop controllers and several control implementations have been proposed in literature. This paper first classifies possible dc droop implementations in a simple framework. Then, the small-signal stability of a VSC-based converter station is analyzed for all the identified droop control schemes. The stability range for the system is determined as a function of the droop gain and is used to compare the flexibility and robustness of the implementations. The comparisons reveal that the droop implementations based on the ac current and dc voltage achieve a wider stability region than the other schemes and a limited sensitivity to the droop gain.

KW - DC voltage droop control

KW - Power transfer capability

KW - Stability

KW - VSC HVDC systems

U2 - 10.1109/PTC.2015.7232614

DO - 10.1109/PTC.2015.7232614

M3 - Article in proceedings

BT - Proceedings of 2015 IEEE Eindhoven PowerTech

PB - IEEE Press

T2 - 2015 IEEE Eindhoven PowerTech

Y2 - 29 June 2015 through 2 July 2015

ER -

Stability of DC Voltage Droop Controllers in VSC HVDC Systems

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