Improved droop control with DC grid resonance damping capability

Egea-Àlvarez, Agustí and Fekriasl, Sajjad and Prieto-Araujo, Eduardo; (2019) Improved droop control with DC grid resonance damping capability. In: 15th IET International Conference on AC and DC Power Transmission (ACDC 2019). IET, GBR. ISBN 978-1-83953-007-4 (https://doi.org/10.1049/cp.2019.0015)

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Abstract

The concept of the so-called droop control has been widely discussed in the literature as the preferred controller for Voltage Source Converter for High Voltage Direct Current (VSC-HVDC) multiterminal and DC grid schemes. Droop control provides fast dynamic response and power-sharing between converter stations among other advantages but, as the controller is usually implemented as a merely proportional gain, the DC grid resonances damping is often very poor. This is because although the grids under study are DC, a broad range of high-frequency components and transient dynamics are inevitable in DC grids caused by long cables and switching to name a few. Conventional droops based on proportional gain are not able to handle such frequency-dependant issues of the DC grids. To improve the DC dynamic response, this paper presents a new droop controller where a DC resonance mitigation compensator is augmented to the conventional droop control that will result in an improved droop compensation by guaranteeing that power-sharing task will satisfactorily meet the desired damping requirements.

ORCID iDs

Egea-Àlvarez, Agustí ORCID logoORCID: https://orcid.org/0000-0003-1286-6699, Fekriasl, Sajjad and Prieto-Araujo, Eduardo;
  • Item type:Book Section
    ID code:68918
    Dates:
    Date
    Event
    6 February 2019
    Published
    23 October 2018
    Accepted
    Keywords:dynamic response, power conversion, power distribution control, power grids, damping, HVDC power convertors, voltage control, power generation control, HVDC power transmission, distributed power generation, Electrical Engineering. Electronics Nuclear Engineering, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:18 Jul 2019 14:23
    Last modified:01 Nov 2023 13:02
    URI:https://strathprints.strath.ac.uk/id/eprint/68918
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