A distributed DC voltage control method for VSC MTDC systems

► The DC grid voltage can be controlled by a single converter or by a distributed control. ► A distributed voltage control can relieve the pressure of the otherwise centralized voltage controlling converter. ► We combined a PI-controller on the main voltage controlling converter with a voltage droop...

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Published inElectric power systems research Vol. 82; no. 1; pp. 54 - 58
Main Authors Dierckxsens, C., Srivastava, K., Reza, M., Cole, S., Beerten, J., Belmans, R.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 2012
Elsevier
Subjects
Applied sciences
Convertors
Direct current networks
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Exact sciences and technology
Multi-terminal HVDC (MTDC)
Power electronics, power supplies
Power networks and lines
Regulation and control
Voltage droop
Voltage Source Converter (VSC)
Multi-terminal HVDC (MTDC)
Voltage Source Converter (VSC)
Voltage droop
Control system
Voltage regulation
Software package
Power system stability
Power electronics
Voltage control
Voltage source converter
Power control
Direct current
Distributed control
Voltage stability
Multiterminal networks
System simulation
Voltage dip
HVDC systems
Electric fault
Electrical characteristic
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Abstract ► The DC grid voltage can be controlled by a single converter or by a distributed control. ► A distributed voltage control can relieve the pressure of the otherwise centralized voltage controlling converter. ► We combined a PI-controller on the main voltage controlling converter with a voltage droop characteristic in other converters. ► The combined approach reduces DC voltage transients. With the development of VSC HVDC transmission, the realization of the first VSC MTDC grid is coming within reach. An outstanding issue is DC voltage control in MTDC systems. The easiest way to maintain stable operation is to assign the task of DC voltage regulation to one converter. This paper discusses a control strategy for an extended VSC MTDC grid using a typical DC voltage control on one DC bus, combined with a DC voltage droop characteristic on the other DC buses. The impact of the proposed control structure on the stability of the AC and DC grid is investigated by numeric simulations using the MatDyn software package.
AbstractList ► The DC grid voltage can be controlled by a single converter or by a distributed control. ► A distributed voltage control can relieve the pressure of the otherwise centralized voltage controlling converter. ► We combined a PI-controller on the main voltage controlling converter with a voltage droop characteristic in other converters. ► The combined approach reduces DC voltage transients. With the development of VSC HVDC transmission, the realization of the first VSC MTDC grid is coming within reach. An outstanding issue is DC voltage control in MTDC systems. The easiest way to maintain stable operation is to assign the task of DC voltage regulation to one converter. This paper discusses a control strategy for an extended VSC MTDC grid using a typical DC voltage control on one DC bus, combined with a DC voltage droop characteristic on the other DC buses. The impact of the proposed control structure on the stability of the AC and DC grid is investigated by numeric simulations using the MatDyn software package.
Author Beerten, J.
Dierckxsens, C.
Srivastava, K.
Belmans, R.
Cole, S.
Reza, M.
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  surname: Cole
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  organization: K.U. Leuven, Division of Electrical Energy and Computer Architectures (ESAT-ELECTA), Kasteelpark Arenberg 10, bus 2445, 3001 Leuven, Belgium
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Cites_doi 10.1109/TDC.2005.1546800
10.1109/MSPEC.2010.5421884
10.1109/PES.2008.4596508
10.1109/TPWRS.2010.2040846
10.1109/TEC.1986.4765673
10.1109/PESS.1999.787474
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Issue 1
Keywords Multi-terminal HVDC (MTDC)
Voltage Source Converter (VSC)
Voltage droop
Control system
Voltage regulation
Software package
Power system stability
Power electronics
Voltage control
Voltage source converter
Power control
Direct current
Distributed control
Voltage stability
Multiterminal networks
System simulation
Voltage dip
HVDC systems
Electric fault
Electrical characteristic
Language English
License CC BY 4.0
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Snippet ► The DC grid voltage can be controlled by a single converter or by a distributed control. ► A distributed voltage control can relieve the pressure of the...
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StartPage 54
SubjectTerms Applied sciences
Convertors
Direct current networks
Electrical engineering. Electrical power engineering
Electrical machines
Electrical power engineering
Exact sciences and technology
Multi-terminal HVDC (MTDC)
Power electronics, power supplies
Power networks and lines
Regulation and control
Voltage droop
Voltage Source Converter (VSC)
Title A distributed DC voltage control method for VSC MTDC systems
URI https://dx.doi.org/10.1016/j.epsr.2011.08.006
Volume 82
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