Work

Identification of Interaction Characteristics Between Control and Protection for Co-Design in an MVDC System

Year: 2026

Type: article

Abstract: Medium-voltage direct current (MVDC) systems exhibit fast fault dynamics and may involve complex interactions between control and protection parameters. This paper applies a global sensitivity analysis (GSA) framework based on Bayesian Sparse Polynomial Chaos Expansion (BSPCE) to an MMC based MVDC system to, for the first time, quantify both individual and interaction effects of control and protection parameters during pole-to-ground fault scenarios. Results demonstrate for a point-to point MVDC system, that protection-related parameters — in particular the current-limiting inductor and converter blocking thresholds — are the primary drivers of system behaviour across all studied fault locations. Control parameters exhibit limited direct influence, although minor contributions through interaction effects were observed under certain conditions. While the relative dominance of key protection parameters remains stable across scenarios, the analysis highlights the importance of considering interaction mechanisms, especially when designing system-level protection strategies. Overall, the proposed BSPCE based GSA approach provides valuable guidance for prioritising key parameters and supports integrated control–protection design in MVDC systems.

Source: IEEE Open Journal of Power Electronics

DOI: 10.1109/ojpel.2026.3676820

Authors: Jaqueline Cabañas Ramos, Ilka Jahn, Ferdinanda Ponci, Antonello Monti

Institutions: RWTH Aachen University, KTH Royal Institute of Technology, Fraunhofer Institute for Applied Information Technology

Language: English

Topic: HVDC Systems and Fault Protection

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,075