Fault current calculation in MTDC grids considering MMC blocking
In this paper, a generic fault current calculation method based on coupled differential equations is proposed which is valid for both blocked and unblocked states of the MMC.
Thermal simulations and measurements of 3-phase medium frequency transformer in 100 kW DC-DC converter with 99.2% efficiency
This article deals with a 100 kW dual active bridge (DAB) DC-DC converter and a 20 kHz 3-phase medium frequency transformer (MFT).
Case study of dc-MMC interconnecting two HVDC lines with different grid topologies
This paper presents a case study of a non-isolated dc-dc converter interconnecting the NordLink and Cobra cable projects.
Partial discharge measurement in DC GIS: comparison between conventional and UHF methods
The aim of this paper is to investigate the partial discharge signals recorded with both conventional and UHF methods in DC voltage.
DC segmentation: a promising solution to improve angle stability of stressed power systems
The new approach is to segment large AC grids into a set of asynchronously operated AC grids interconnected by HVDC links.
Analysis and design of modular multilevel converters with partial integration of energy storage systems
This paper presents a novel design methodology for a 3-phase Modular Multilevel Converter with partial integration of energy storage.
Transformation of an ovehead AC transmission line into a DC transmission line : A study case
This paper describes the preliminary study of the transformation of an existing 220 kV AC transmission line into a bipolar DC line with a metallic return conductor.
Economic assessment of an innovative farm architecture
A techno-economic analysis methodology was defined to compare wind farm architectures.
Simulation methodology for HVDC cable accessories: focus on oscillating polarity reversal and fast transient overvoltages
The aim of this paper is to propose a time decoupled simulation method to compute the electric field in case of OPR and S/IMP without losing in result accuracy.
Modular Multilevel Converter with Embedded Energy Storage for Power Oscillation Damping and Fast Frequency Response – A case study
This paper examines the benefits on the transmission system of including additional energy storage in an HVDC link for ancillary services.
