Control of VSC-HVDC Connected Offshore Windfarms for Providing Synthetic Inertia

Liu, Xudan; Lindemann, Andreas

doi:10.1109/jestpe.2017.2751541

Cited by 62 publications

(47 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Combining the current and power loss equations as given in (32), the equivalent series impedance Zmvc of all the cables of a MV collector system as well as the lumped resistance Rmvc and inductance Lmvc can be solved, as shown in (33).…”

Section: A Power Loss Based Aggregation Modelmentioning

confidence: 99%

“…The wind farm side VSC converter (WFVSC) is regulated to maintain a constant AC voltage for the connected OWF. For the purpose of better dynamic performance, a single loop PI control structure is adopted in the WFVSC [31], [32]. Since there is no PLL and the dq frame control is symmetrical, the AC side sequence impedances of the WFVSC are frequency-decoupled, which can be written as…”

Section: Resonance Analysis Of Dfig-based Owf With Hvdc Connectionmentioning

confidence: 99%

See 1 more Smart Citation

Frequency-Coupled Impedance Modeling and Resonance Analysis of DFIG-Based Offshore Wind Farm With HVDC Connection

2020

View full text Add to dashboard Cite

show abstract

Section: A Power Loss Based Aggregation Modelmentioning

confidence: 99%

Section: Resonance Analysis Of Dfig-based Owf With Hvdc Connectionmentioning

confidence: 99%

Frequency-Coupled Impedance Modeling and Resonance Analysis of DFIG-Based Offshore Wind Farm With HVDC Connection

2020

View full text Add to dashboard Cite

show abstract

“…However, power electronic converters with conventional control strategies do not inherently provide physical inertia, and reduced equivalent system inertia may compromise the stability of power systems under severe disturbances [10]. Therefore, new oscillatory issues related to the increasing penetration of power electronics converters are also becoming important [11].…”

Section: Introductionmentioning

confidence: 99%

“…One of the first attempts was introduced by Phulpin [20], who proposed a communicationfree controller that allowed offshore wind generators connected via VSC-HVDC links to provide inertia to the mainland ac grid. Recently, some authors have proposed coordinated control strategies to provide frequency support and/or inertia emulation via coordinated dc-voltage regulation [11,21,22]. In particular, Rouzbehi et al [23] introduced the concept of inertia sharing for ac systems coupled by MTDC links.…”

Section: Introductionmentioning

confidence: 99%

Coupling of AC Grids via VSC-HVDC Interconnections for Oscillation Damping Based on Differential and Common Power Control

Rodríguez-Cabero

Roldán-Pérez

Prodanović

et al. 2020

IEEE Trans. Power Electron.

View full text Add to dashboard Cite

This paper presents a control approach for HVDC interconnections that provides damping of frequency oscillations in asynchronous ac grids by introducing a virtual friction for coupling their inertial dynamics. The HVDC interconnection is modelled by using the concept of common and differential power flow, allowing for independent control of the dc voltage and the net power transfer between HVDC terminals, respectively. The proposed controller introduces a damping effect in the differential power flow which is equivalent to a mechanical friction between the generators connected to the ac grids at the two terminals. This virtual friction-based damping can effectively attenuate poorly damped frequency oscillations that can be observed where the HVDC interconnection is interfaced to either of the ac grids without relying on fast communication between the converter terminals. The impact of the proposed control technique on the stability and damping of two interconnected power systems is first analysed by using a simplified model. Then, the sensitivity to the frequency and damping of the oscillation modes appearing in the ac grid frequencies, as well as the effect of the dc line resistance on the oscillation damping are evaluated. Finally, the control system performance is experimentally validated on a scaled laboratory setup.

show abstract

“…One of the first attempts was introduced by Phulpin [17], who proposed a communicationfree control scheme that allowed offshore wind generators connected through VSC-HVDC links to provide inertia. Recently, several authors have proposed control strategies to provide frequency support and inertia emulation via a coordinated dc-link voltage regulation [18,19]. However, these control strategies cannot be used to damp local oscillation modes.…”

Section: Introductionmentioning

confidence: 99%

Virtual Friction Control for Power System Oscillation Damping with VSC-HVDC Links

Rodríguez-Cabero

Roldán-Pérez

Prodanović

et al. 2019

2019 IEEE Energy Conversion Congress and Exposition (ECCE)

View full text Add to dashboard Cite

This paper presents a technique for damping of oscillations in ac grids by control of VSC-HVDC links. The effect of the proposed controller is equivalent to a mechanical friction between two asynchronous networks (modelled as rotating masses) interconnected by the HVDC link. Therefore, the dynamics of the ac grids will be coupled, and the virtual friction gain can be utilised to effectively damp frequency oscillations in any of the ac networks. A centralised and a decentralised implementation of the proposed controller are presented. It is shown that both implementations of the virtual friction-based damping can effectively attenuate poorly damped frequency oscillations in both of the interconnected ac grids and that the decentralised implementation can ensure damping without relying on fast communication between the HVDC terminals. The impact of the proposed controller on the stability of the two grids is analysed with a simplified system model, and the performance is experimentally validated by a scaled laboratory setup.

show abstract

Control of VSC-HVDC Connected Offshore Windfarms for Providing Synthetic Inertia

Cited by 62 publications

References 25 publications

Frequency-Coupled Impedance Modeling and Resonance Analysis of DFIG-Based Offshore Wind Farm With HVDC Connection

Frequency-Coupled Impedance Modeling and Resonance Analysis of DFIG-Based Offshore Wind Farm With HVDC Connection

Coupling of AC Grids via VSC-HVDC Interconnections for Oscillation Damping Based on Differential and Common Power Control

Virtual Friction Control for Power System Oscillation Damping with VSC-HVDC Links

Contact Info

Product

Resources

About