Droop control for loss minimization in HVDC multi-terminal transmission systems for large offshore wind farms

Mònica Aragüés-Peñalba, Agustí Egea-Àlvarez, Samuel Galceran Arellano, Oriol Gomis-Bellmunt

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

A control scheme is proposed in order to minimize the losses in multi-terminal HVDC systems for large offshore wind power plants. This approach is based on two cascaded control schemes. A low level droop control regulates appropriately the DC current depending on the DC voltage with the purpose of ensuring a stable voltage in DC system. Another higher hierarchy controller guarantees that power flow is optimal. The proposed scheme enables to perform secondary and tertiary control strategies into the DC grid taking profit of the advantages of each individual control scheme: the robustness of droop control and the minimisation of losses ensured by the optimal power flow (OPF) algorithm. Total losses include transmission losses and converter station losses. A steady state analysis is provided to show the power flows that minimise several objective functions and dynamic simulations are performed to illustrate the dynamic behaviour of the control scheme under wind speed changes and communication faults.

LanguageEnglish
Pages48-55
Number of pages8
JournalElectric Power Systems Research
Volume112
DOIs
Publication statusPublished - 1 Jan 2014

Fingerprint

Offshore wind farms
Level control
Electric potential
Wind power
Profitability
Power plants
Controllers
Communication
Computer simulation

Keywords

  • droop
  • HVDC transmission
  • multi-terminal HVDC
  • offshore wind farms
  • OPF

Cite this

Aragüés-Peñalba, Mònica ; Egea-Àlvarez, Agustí ; Arellano, Samuel Galceran ; Gomis-Bellmunt, Oriol. / Droop control for loss minimization in HVDC multi-terminal transmission systems for large offshore wind farms. In: Electric Power Systems Research. 2014 ; Vol. 112. pp. 48-55.
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Droop control for loss minimization in HVDC multi-terminal transmission systems for large offshore wind farms. / Aragüés-Peñalba, Mònica; Egea-Àlvarez, Agustí; Arellano, Samuel Galceran; Gomis-Bellmunt, Oriol.

In: Electric Power Systems Research, Vol. 112, 01.01.2014, p. 48-55.

Research output: Contribution to journalArticle

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