Design of a Single Branch of Energy Storage Submodules Connected to HVDC Systems to Support AC Grids

The number of HVDC installations is increasing and the decarbonization of power systems makes it necessary to install storage systems. It might become relevant to assess the synergies between both trends by connecting storage systems on the DC side of HVDC systems. The contribution of this paper is...

Full description

Saved in:
Bibliographic Details
Published inElectronics (Basel) Vol. 13; no. 17; p. 3355
Main Authors Errigo, Florian, Sau-Bassols, Joan, Bekkouri, Hind, Morel, Florent, Gonzalez-Torres, Juan-Carlos, Benchaib, Abdelkrim, Rault, Pierre, Bourgeat, Xavier
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2024
MDPI
Subjects
Ancillary services
Damping
Design engineering
Electric power
Electric power systems
Energy storage
Engineering Sciences
Feasibility
Feasibility studies
Frequency response
Modules
Storage systems
Technology assessment
Voltage converters (DC to DC)
Wind power
MMC
Modular multilevel converters
Fast frequency response
Supercapacitors
Oscillation damping
Ancillary services
HVDC
Energy storage
Online AccessGet full text

Cover

More Information
Summary:The number of HVDC installations is increasing and the decarbonization of power systems makes it necessary to install storage systems. It might become relevant to assess the synergies between both trends by connecting storage systems on the DC side of HVDC systems. The contribution of this paper is to show the feasibility and the design of such a system to provide three different ancillary services: power oscillation damping (POD), fast frequency response (FFR), or wind power oscillation smoothing. The DC storage system consists of a series connection of sub-modules with energy storage devices connected to each sub-module through a DC-DC converter. For the proposed design methodology, a first simple average model of the DC storage converter is developed to run preliminary EMT simulations to obtain power profiles for the energy storage elements according to the system needs. These profiles are used as inputs for designing the storage system. The design methodology is validated by performing new EMT simulations with a more detailed model which includes a model of the storage elements. Results show that the designed system can provide the expected services and sizing results confirm the technical feasibility of the solution.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics13173355